To see the other types of publications on this topic, follow the link: Mangrove diversity.
Journal articles on the topic 'Mangrove diversity'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Mangrove diversity.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Muhtadi, Ahmad, Rusdi Leidonald, Kamto Triwibowo, and Nurul Azmi. "Flora Fauna Biodiversity and CSR Implementation in the Mangrove Ecosystem of Bagan Serdang Village, North Sumatra Province." Jurnal Ilmiah Perikanan dan Kelautan 12, no. 1 (March 21, 2020): 59. http://dx.doi.org/10.20473/jipk.v12i1.17120.
Full textAbstract:
HighlightsMangrove sampling was conducted to use the "spot check" methodMangrove ecosystem of Bagan Serdang Village was categorized damaged Diversity of mangroves in the Bagan Serdang Village mangrove ecosystem was categorized moderate, but diversity of aquatic organisms was higher than the mangrove.Pertamina's CSR activities had an impact on environmental sustainability such as a habitat for various fauna and improving the community's economyAbstractInformation about mangrove and fauna biodiversity in Bagan Serdang Village is essential to be studied as a basis for assessing the management and utilization potential of mangrove. This information could be used as a reference in sustainable mangrove management. This study aims to determine the biodiversity of flora and fauna in the mangrove ecosystem of Bagan Serdang Village. The research location is divided into three areas, with three observation points. The study was conducted in August-September 2019. The sampling of mangroves was carried out using the Spot Check Method. The results showed that the types of mangroves found were 18 species from 12 families consisting of 14 species of true mangrove and four types of associated mangroves while the fauna found in the mangrove ecosystem of Bagan Serdang Village was 16 species of fish, nine species of crustaceans, 13 species of mollusks, four species of birds, one species of reptile, one species of mammal and one species of horse shoe crab. The results of the mangroves analysis in the Bagan Serdang Village’s mangrove ecosystem, including in moderate heading to damage condition. This could be seen from the death of several trees and the flourishing of A. ilicifolius species as a marker of mangrove, which tends to be damaged. The diversity of mangroves in the Bagan Serdang Village is lower (1.63) compared to aquatic organisms that reach 2.09 - 2.44. Corporate responsibility or CSR that PT Pertamina (Persero) TBBM Medan Group carried out in the village of Bagan Serdang with mangrove planting activities and ecotourism, as well as the development of processed mangrove products, could increase the value of diversity and increase the economy of the surrounding community.
2
Calcinai, Barbara, Azzurra Bastari, Daisy M. Makapedua, and Carlo Cerrano. "Mangrove sponges from Bangka Island (North Sulawesi, Indonesia) with the description of a new species." Journal of the Marine Biological Association of the United Kingdom 97, no. 6 (May 23, 2016): 1417–22. http://dx.doi.org/10.1017/s0025315416000710.
Full textAbstract:
Mangroves create unique ecological environments, furnishing a habitat opportunity for many species. The majority of published information on mangrove sponges comes from the Caribbean while few data are available from Indo-Pacific mangrove sponges. In general, species diversity of sponges in mangroves is lower than adjacent subtidal habitats in both the Caribbean and Indo-Pacific. The aim of this study is to report the first data about sponge species diversity of two mangrove forests from Bangka Island (North Sulawesi, Indonesia) and to describe a new sponge species associated with the mangroves. The survey found 19 species, belonging to 11 families and 15 genera; the samples were collected on mangrove trunks, on the roots or on the surrounding bottom. The majority of the species are typical of coral reef but two of them have been previously found only in lagoons or in mangrove habitats. These new data enlarge our knowledge about Indonesian sponges diversity and suggest the urgency to consider Indonesian mangroves as an important but underestimated element in coral reef ecological dynamics.
3
Payne, Nicholas Leslie, and Bronwyn May Gillanders. "Assemblages of fish along a mangrove - mudflat gradient in temperate Australia." Marine and Freshwater Research 60, no. 1 (2009): 1. http://dx.doi.org/10.1071/mf08124.
Full textAbstract:
Mangroves are considered to support rich assemblages of fish and invertebrates. Fishes inhabiting mangrove habitats and at various distances from mangroves across mudflats were sampled to: (1) compare fish assemblages between habitats; and (2) determine the influence of mangrove proximity on fish abundance and diversity in three southern Australian estuaries between November 2005 and January 2006. Based on their distribution, fish species were classified as mangrove residents, mudflat residents, generalists or rare species. The assemblage structure of fish in mangroves differed from assemblages 500 m away; however, neither total abundance nor species richness differed significantly between mangroves and mudflats. Mangrove residents and Aldrichetta forsteri (yellow-eyed mullet) displayed strong associations with mangrove habitats, whereas mudflat residents were associated with mudflat habitats. No other fish groups or individual species occurred in higher abundances in either habitat. Total fish abundance, mangrove residents and A. forsteri were positively correlated with pneumatophore density, indicating that the structural complexity of the mangroves might influence the distributions of certain fish species. The current study demonstrated that mangrove habitats in temperate Australia support no greater abundance or diversity of fish than adjacent mudflat habitats and that mangrove proximity does not influence fish distribution at a habitat scale.
4
Mujiono, Nova, and Nur Rohmatin Isnaningsih. "Komunitas Moluska pada Berbagai Kondisi Mangrove di Segara Anakan, Cilacap-Jawa Tengah." Jurnal Kelautan Tropis 25, no. 2 (March 11, 2022): 213–22. http://dx.doi.org/10.14710/jkt.v25i2.13717.
Full textAbstract:
The mangrove forest in Segara Anakan lagoon continues to decrease from land conversion or sedimentation. It could have an impact on the diversity of molluscs. This study aims to inventory the diversity and the patterns of mangrove molluscs communities in the Segara Anakan lagoon area. The method used was a 5x5 m2 sample plot in five different mangrove forest cover conditions (dense mangroves, sparse mangroves, planted mangroves, Nipah, and open land). Each category is represented by two stations. The research was inventorying 19 species of molluscs from eight families. The species with the highest number of individuals was Cerithidea weyersi (26.53% of the population). The species with the widest distribution were Littoraria carinifera and Neripteron violaceum. In general, the molluscs communities found from the Segara Anakan Lagoon have moderate diversity, low dominance, and high evenness. The number of individuals and species based on the category of mangrove habitat conditions varies greatly. In dense mangroves (M1) found 119 individuals from 12 species, sparse mangroves (M2) 278 individuals from 15 species, planted mangroves (MT) 129 individuals from 7 species, Nipah (N) 36 individuals from 6 species, and in open land ( LT) collected 29 individuals from 7 species. The data show that sparse mangroves are preferred by molluscs when compared to dense mangroves. Our studies also added 6 species as new records from the Segara Anakan location, thereby increasing the number of molluscs diversity in the area become 61 species. Hutan mangrove di laguna Segara Anakan terus mengalami penyusutan luas oleh konversi lahan maupun sedimentasi. Hal ini dapat berdampak terhadap keanekaragaman moluska yang hidup di dalamnya. Penelitian ini bertujuan untuk mendata keanekaragaman dan pola komunitas moluska mangrove di kawasan laguna Segara Anakan. Metode yang digunakan adalah dengan menggunakan petak contoh 5x5 m2 pada lima kondisi tutupan hutan mangrove yang berbeda (mangrove padat, mangrove jarang, mangrove ditanam, Nipah, dan lahan terbuka). Masing-masing kategori diwakili oleh dua stasiun. Penelitian berhasil menginventaris 19 spesies moluska anggota dari delapan famili. Spesies dengan jumlah individu terbanyak adalah Cerithidea weyersi (26,53 % dari populasi). Adapun spesies dengan persebaran terluas adalah Littoraria carinifera dan Neripteron violaceum. Secara umum komunitas moluska yang dijumpai dari Laguna Segara Anakan memiliki keanekaragaman sedang, dominansi rendah, dan kemerataann tinggi. Jumlah individu dan spesies berdasarkan kategori kondisi habitat mangrove sangat bervariasi. Kondisi mangrove padat (M1)dijumpai 119 individu dari 12 spesies, mangrove jarang (M2) 278 individu dari 15 spesies, mangrove ditanam (MT) 129 individu dari 7 spesies, Nipah (N) 36 individu dari 6 spesies, dan pada lahan terbuka (LT) berhasil dikoleksi 29 individu dari 7 spesies. Data kami menunjukkan bahwa mangrove jarang lebih disukai oleh moluska bila dibandingkan dengan mangrove padat. Penelitian kami juga menambahkan 6 spesies sebagai catatan baru dari lokasi Segara Anakan sehingga menambah jumlah keragaman moluska di kawasan tersebut menjadi 61 spesies.
5
SERRANO, Shirly C., Nipon TANGTHAM, Surat BUALERT, and Suthee JANYASUTHIWONG. "Species Diversity of Mangroves in Central Zambales, Philippines." Journal of Environmental Management and Tourism 13, no. 3 (June 3, 2022): 782. http://dx.doi.org/10.14505/jemt.v13.3(59).17.
Full textAbstract:
The Philippines being an archipelagic country has one of the most diverse mangrove ecosystems. Species composition and diversity assessment are vital for sustainable management and conservation activities of mangrove resources. The diversity of mangroves was assessed to determine the status of the mangrove ecosystem in the central part of Zambales, Philippines. Data were gathered using a random quadrat sampling method in the twelve pre-selected stations. Each quadrat measures 1 meters and the quantitative description of each plant species was determined. There were a total of 15 mangrove species surveyed in the area, under seven families, which family Rhizophoraceae was the most represented, with six species, and families Euphorbiaceae, Meliaceae, and Myrsinaceae were only represented with one species each. Shannon’s Diversity Index showed that the mangrove ecosystems in Botolan had “very low” diversity (SDI=1.71) and Iba had “low” diversity (SDI=2.11). Anthropogenic sources such as agri-aqua and encroachment served as the major driving forces in the diversity of mangroves. Other threats include solid waste disposal, quarrying, oil spill, organic fertilizer run-off, and soil erosion among others. These may threaten species that could eventually cause greater biodiversity and economic loss. Hence, protection, conservation, and sustainable management be given priority.
6
Setyawan, Yendra Pratama, Wakhid Wakhid, and Suhadi Suhadi. "The Denser Canopy of Mangrove Drives the Structure of Insect Communities." Tropical Life Sciences Research 31, no. 3 (October 15, 2020): 77–90. http://dx.doi.org/10.21315/tlsr2020.31.3.6.
Full textAbstract:
Mangrove restoration in Trenggalek, East Java has resulted an age variation of mangrove ecosystem. Diverse species of insects predominantly found in mangroves were collected using yellow pan traps, swipe nets and by direct picking from three different sites. This research was conducted from April until August 2015. There are 9,181 individual insects associated with mangroves comprised of 42 species from 31 families and eight orders. The first site or the 15 years old mangrove (66.22% canopy cover) indicated the highest Shannon diversity index at 2.54, Evenness index of 0.32 and Margalef richness index of 4.84. The lowest diversity was recorded in the third site or the five years old mangrove (19.65% canopy cover), with the Shannon diversity index at 2.28, Evenness index at 0.26 and Margalef richness index at 4.59. The most abundant species located was the Eristena mangalis, with 1,724 individuals (relative abundance of 18.78%), followed by Monolepta sp. with 1,649 individuals (relative abundance of 17.96%). These are the phytophagous insects associated with mangrove leaves. This study concluded that the older mangrove ecosystem have a denser canopy that supports insect life.
7
Aye, Wai Nyein, Xiaojuan Tong, and Aung Wunna Tun. "Species Diversity, Biomass and Carbon Stock Assessment of Kanhlyashay Natural Mangrove Forest." Forests 13, no. 7 (June 28, 2022): 1013. http://dx.doi.org/10.3390/f13071013.
Full textAbstract:
Mangrove ecosystems sequester and store large amounts of carbon in both biomass and soil. In this study, species diversity, the above and below-ground biomass as well as carbon stock by the mangroves in Kanhlyashay natural mangrove forest were estimated. Six true mangrove species from four families were recorded in the sample plots of the study area. Among them, Avicennia officinalis L. from the Acanthaceae family was the abundance of species with an importance value of 218.69%. Shannon–Wiener’s diversity index value (H′ = 0.71) of the mangrove community was very low compared to other natural mangrove forests since the mangrove stands in the study site possessed a low number of mangrove species and were dominated by a few species. Estimated mean biomass was 335.55 ± 181.41 Mg ha−1 (AGB = 241.37 ± 132.73 Mg ha−1, BGB = 94.17 ± 48.73 Mg ha−1). The mean overall C-stock of the mangrove stand was 150.25 ± 81.35 Mg C ha−1 and is equivalent to 551.10 ± 298.64 Mg CO2 eq. The role of forests in climate change is two-fold as a cause and a solution for greenhouse gas emissions. The result of the study demonstrated that the mangroves in Letkhutkon village have high carbon storage potential, therefore it is necessary to be sustainably managed to maintain and increase carbon storage. Climate change mitigation may be achieved not only by reducing the carbon emission levels but also by maintaining the mangrove ecosystem services as carbon sinks and sequestration.
8
SIPAHELUT, PATRICIA, D. WAKANO, and D. E. SAHERTIAN. "Keanekaragaman Jenis Dan Dominansi Mangrove Di Pesisir Pantai Desa Sehati Kecamatan Amahai, Kabupaten Maluku Tengah." Biosel: Biology Science and Education 8, no. 2 (January 2, 2020): 160. http://dx.doi.org/10.33477/bs.v8i2.1145.
Full textAbstract:
Geographically, Indonesia is in the tropics. This causes Indonesian waters to become increasingly rich in various types of marine biota which must be found in coastal waters. Coastal waters are places where various ecosystems with high organic productivity are found, one of which is mangrove. Mangroves are plants that live in coastal areas whose lives are always influenced by tidal currents. This study will explain how the diversity of mangroves and how the dominance of mangrove species on the coast of Sehati Village, Amahai District, Central Maluku Regency. This research was conducted to determine the species diversity and dominance of mangrove species. So that the results of this study show that in the coastal waters of Desa Sehati, Amahai Subdistrict, Central Maluku Regency, 5 mangrove species were found, namely Rhizophora mucronata, Bruguiera cylindrica, Bruguiera gymnorhiza, Sonneratia alba and Nypa fruticans which were members of 2 classes (Magnoliopsida and Liliopsida), 2 orders (Myrtales and Arecales), 3 families (Rhizophoraceae, Sonneratiaceae and Arecaceae), and 4 genera (Rhizophora, Bruguiera, Sonneratia and Nypa) with medium species diversity indexes and low species dominance.
Key Words: Mangrove, Species Diversity, Species Dominance
9
Guillena, Ma Dulce C., Ma Rio Naguit, and Jane T. Aquino. "Species Composition of Mangrove Forests in Olingan Creek- A Reference for Integrated Coastal Management." International Journal of Emerging Research in Management and Technology 6, no. 7 (June 29, 2018): 125. http://dx.doi.org/10.23956/ijermt.v6i7.197.
Full textAbstract:
Mangroves shares specialized attributes for growing with excess saltwater, and for promoting sustainability and dispersal. These attributes enabled mangroves to occupy tidal areas around the world and kept from extinction. This study aimed to conduct an identification of mangrove species in Olingan creek and determine the status of the mangroves in terms of their relative abundance. Data collection was done through actual determination of mangrove community structure by using the transect line plot technique. The diversity index was sought using the Shannon’s Diversity Index. The results showed that there are 14 mangrove species in 9 families found to grow in the area.Nypa fruticans , Rhizophora stylosa and Rhizophora apiculata species were the most dense and most frequent mangrove species in Olingan creek. Terminalia catappa turned out to be the species having the lowest density.Avicennia(officinalis) lanata ranks first in dominancy and importance value followed by Rhizophora stylosa then Calophylluminophyllum. Moreover, Bruguiera sexangula had the lowest dominancy while Sonneratia ovata had the lowest importance value of all the mangrove species. Major problems observed include conversion of mangrove areas into residential and beach development. The mangrove composition in the area is relatively high and therefore needs proper protection, conservation and management.
10
Al Idrus, Agil, Baiq Nunung Hidayati, Erna Ajizah, Wahyu Bintang Ilahi, and Abdul Syukur. "The improvement of molluscs population: as a parameter of success of local scale mangrove conservation on the south coast of Lombok." IOP Conference Series: Earth and Environmental Science 913, no. 1 (November 1, 2021): 012047. http://dx.doi.org/10.1088/1755-1315/913/1/012047.
Full textAbstract:
Abstract Mangroves are known by local people as mangrove plants that contribute to the sustainability of the diversity of marine biota species, such as molluscs. At the study site, mangrove conservation activities have been carried out by the community and are thought to influence the development of molluscs populations significantly. The study aims to assess the results of local-scale mangrove conservation with the development of molluscs populations. The research method uses observation methods with transect methods for ecological data. Ecological data analysis uses the index of evenness, richness, and diversity. The analysis found 27 species of molluscs consisting of 21 species of gastropods and 6 species of bivalves. The highest evenness and diversity was found at 2.4 in Gerupuk, while the highest wealth index was 16.8 in Poton Bakau. Furthermore, the molluscs species found consists of two classes, namely bivalves and gastropods. The main factor in determining species richness, is more determined by the condition of the substrate. In this case, the presence of mangroves is very important in creating the substrate conditions needed by the diversity of mollusc species. Therefore, mangrove conservation is very important for the protection and preservation and diversity of molluscs species. Information on the ecological potential of mangroves on fauna diversity, especially molluscs, can be a major source of ecosystem-based marine resource management, such as at the study site.
11
Dias, Armando Cavalcante Franco, Michele de Cassia Pereira e Silva, Simone Raposo Cotta, Francisco Dini-Andreote, Fábio Lino Soares, Joana Falcão Salles, João Lúcio Azevedo, Jan Dirk van Elsas, and Fernando Dini Andreote. "Abundance and Genetic Diversity ofnifHGene Sequences in Anthropogenically Affected Brazilian Mangrove Sediments." Applied and Environmental Microbiology 78, no. 22 (August 31, 2012): 7960–67. http://dx.doi.org/10.1128/aem.02273-12.
Full textAbstract:
ABSTRACTAlthough mangroves represent ecosystems of global importance, the genetic diversity and abundance of functional genes that are key to their functioning scarcely have been explored. Here, we present a survey based on thenifHgene across transects of sediments of two mangrove systems located along the coast line of São Paulo state (Brazil) which differed by degree of disturbance, i.e., an oil-spill-affected and an unaffected mangrove. The diazotrophic communities were assessed by denaturing gradient gel electrophoresis (DGGE), quantitative PCR (qPCR), and clone libraries. ThenifHgene abundance was similar across the two mangrove sediment systems, as evidenced by qPCR. However, thenifH-based PCR-DGGE profiles revealed clear differences between the mangroves. Moreover, shifts in thenifHgene diversities were noted along the land-sea transect within the previously oiled mangrove. ThenifHgene diversity depicted the presence of nitrogen-fixing bacteria affiliated with a wide range of taxa, encompassing members of theAlphaproteobacteria,Betaproteobacteria,Gammaproteobacteria,Firmicutes, and also a group of anaerobic sulfate-reducing bacteria. We also detected a unique mangrove-specific cluster of sequences denoted Mgv-nifH. Our results indicate that nitrogen-fixing bacterial guilds can be partially endemic to mangroves, and these communities are modulated by oil contamination, which has important implications for conservation strategies.
12
Anak Agung, Ayu Diah Kusumadewi, and Agil Al Idrus. "Rhizophoraceae Flower and Fruit Morphology as Evidence of Resilience of Mangrove Revegetation in Lembar West Lombok." Jurnal Biologi Tropis 23, no. 1 (January 9, 2023): 63–69. http://dx.doi.org/10.29303/jbt.v23i1.4345.
Full textAbstract:
The stability of the mangrove ecosystem is influenced by climate change. One indicator of the resilience of mangrove species is the emergence of reproductive organs (flowers and fruit). The purpose of this study was to describe the morphological characteristics of fruit and flowers as evidence of the resilience of mangrove revegetation in West Lombok. This research was conducted in a mangrove area on the coast of West Lombok. The samples of this study were all species of the Rhizoporaceae family from revegetation. Mangrove data which includes the names of revegetation mangrove species from the Rhizoporaceae family using the transect method. Furthermore, data analysis was carried out qualitatively and quantitatively. Qualitative analysis was conducted to describe the types of mangroves. Quantitative analysis was conducted to explain the diversity of mangrove species. Mangrove diversity can be determined using the diversity theory by Shannon-Wienner (H'). Based on the results of mangrove data which includes the names of revegetated mangrove species from the Rhizophoraceae family, three mangrove species were found, namely Rhizophora mucronate, Rhizophora stylosa, and Rhizophora apiculata which identified the morphological characteristics of the fruit and flowers. The results of this study indicate the results of the diversity index value H'1 < H'< 3, then the diversity index is categorized as medium. So it can be concluded that the morphological characteristics of fruit and flowers in the Rhizophoraceae family can be used as evidence of the resilience of mangrove revegetation results.
13
Nabilah, Rizka, Fajar Islam Sitanggang, and Yeni Rahayu. "Mangrove Species Diversity, Stand Structure, and Zonation — A Case Study at Pahawang Kecil Island." IOP Conference Series: Earth and Environmental Science 830, no. 1 (September 1, 2021): 012004. http://dx.doi.org/10.1088/1755-1315/830/1/012004.
Full textAbstract:
Abstract Pesawaran Regency is an administrative area of Lampung Province which has the potential marine tourism with mangrove resources in Pahawang Kecil Island. Pahawang Kecil island is a coastal natural tourist destinations located in Punduh Padada District, Pesawaran Regency. The mangrove ecosystem is a community of mangrove vegetation associated with fauna and microorganisms. There are various components of life in the ecosystem. In addition, the main function of mangroves is to protect stability of the shoreline from sea waves. In fact, the conversion of mangrove ecosystems become a tourist area and fish pond area continues. This impact to the local government and community members to rehabilitation mangroves. However, this prefentive activity to rehabilitation are failed. This failure caused by not according to the mangrove planting area. Planting mangrove is not in the green belt area. Thus, it is necessary to have a preliminary study of landscape typology mangrove vegetation. In accordance with the presidential regulation Number 37 of 2012 which explains that the preservation of mangrove ecosystems is by accommodating deep mangrove ecosystems Regional Spatial Planning and zoning of coastal areas and small islands. The purpose of this study was to identify the condition of mangrove vegetation and create the mapping typology of mangrove vegetation on Pahawang Kecil Island. The research was carried out on vegetation parameters using the combination method of lines and checkered lines with measurement of diameter, height and number of individuals. In addition, measurements of the inundation height of each were carried out in research sites. Pahawang Kecil has the Rhyzophora stylosa species with the highest volume level of mangrove vegetation, namely 3.2538.15 m3 / ha. The location of Pahawang Kecil Island was identified in 10x10 meter dominance species mangrove Rizophora stylosa with a relative density with a value of 94.12%, relative frequency value of 8.47%, and an important value of 105.96%.
14
Nabilah, Rizka, Fajar Islam Sitanggang, and Yeni Rahayu. "Mangrove Species Diversity, Stand Structure, and Zonation — A Case Study at Pahawang Kecil Island." IOP Conference Series: Earth and Environmental Science 830, no. 1 (September 1, 2021): 012004. http://dx.doi.org/10.1088/1755-1315/830/1/012004.
Full textAbstract:
Abstract Pesawaran Regency is an administrative area of Lampung Province which has the potential marine tourism with mangrove resources in Pahawang Kecil Island. Pahawang Kecil island is a coastal natural tourist destinations located in Punduh Padada District, Pesawaran Regency. The mangrove ecosystem is a community of mangrove vegetation associated with fauna and microorganisms. There are various components of life in the ecosystem. In addition, the main function of mangroves is to protect stability of the shoreline from sea waves. In fact, the conversion of mangrove ecosystems become a tourist area and fish pond area continues. This impact to the local government and community members to rehabilitation mangroves. However, this prefentive activity to rehabilitation are failed. This failure caused by not according to the mangrove planting area. Planting mangrove is not in the green belt area. Thus, it is necessary to have a preliminary study of landscape typology mangrove vegetation. In accordance with the presidential regulation Number 37 of 2012 which explains that the preservation of mangrove ecosystems is by accommodating deep mangrove ecosystems Regional Spatial Planning and zoning of coastal areas and small islands. The purpose of this study was to identify the condition of mangrove vegetation and create the mapping typology of mangrove vegetation on Pahawang Kecil Island. The research was carried out on vegetation parameters using the combination method of lines and checkered lines with measurement of diameter, height and number of individuals. In addition, measurements of the inundation height of each were carried out in research sites. Pahawang Kecil has the Rhyzophora stylosa species with the highest volume level of mangrove vegetation, namely 3.2538.15 m3 / ha. The location of Pahawang Kecil Island was identified in 10x10 meter dominance species mangrove Rizophora stylosa with a relative density with a value of 94.12%, relative frequency value of 8.47%, and an important value of 105.96%.
15
Lai, Jiayong, Wee Cheah, Kishneth Palaniveloo, Rempei Suwa, and Sahadev Sharma. "A Systematic Review of the Physicochemical and Microbial Diversity of Well-Preserved, Restored, and Disturbed Mangrove Forests: What Is Known and What Is the Way Forward?" Forests 13, no. 12 (December 16, 2022): 2160. http://dx.doi.org/10.3390/f13122160.
Full textAbstract:
Mangrove forests are salt-tolerant intertidal vegetation in tropical and subtropical areas. Mangrove ecosystems provide commercial products, valuable fisheries, and aquaculture resources, protect and stabilize coastlines, and are important carbon sinks. However, they are threatened globally by human activities such as deforestation, pollution, and development causing fragmentation between the well-preserved, restored, and disturbed mangrove forests. Despite this, mangroves can adapt and strive well and are notable well associated with microbial diversity. Here, we investigate the diversity of microbes in different environmental settings using preferred reporting items for systematic and meta-analyses (PRISMA) analysis for publications from Scopus and the Web of Science databases. We report publications since 1987, and observed an exponential increase in publications beginning in the year 2000, which may be associated with the development of molecular and sequencing technologies. Differences in bacterial diversity was observed across the well-preserved, restored, and disturbed mangrove environments. Disturbed mangrove forests had a higher diversity (70 unique taxon orders reported) compared to well-preserved (33 unique taxon orders reported) and restored forests (38 unique taxon orders reported). Based on our analysis, we found that the microbial community plays an important role in the survival and adaptability of mangroves under varying environmental conditions. Thus, there is a need and a lot of potential for research in the area of mangrove microbiology with reference to ecology, biogeochemistry, and geomorphology.
16
Zaida, Amalia, and Margareta Rahayuningsih. "Keanekaragaman dan Kelimpahan Jenis Burung di Kawasan Mangrove Mangunharjo Semarang." Bioma : Berkala Ilmiah Biologi 23, no. 2 (December 31, 2021): 100–106. http://dx.doi.org/10.14710/bioma.23.2.100-106.
Full textAbstract:
The Mangunharjo mangrove area is one of the mangrove ecosystems in the coastal area of Semarang City. This study aims to determine the diversity and abundance of bird species, as well as the similarity index of bird communities in the Mangunharjo mangrove area. Data were collected using the point count method in the observation area including ponds, mangroves, rice fields, and beaches. Data collection was carried out periodically from July 2019 to February 2020 with three replications in each area. The results showed that in the Mangunharjo mangrove area there were 66 species of birds from 32 families. The Shannon-Wiener diversity index in the observation area, from the highest to the lowest, were ponds 3.10 (high), mangroves 2.81 (medium), rice fields 2.75 (medium), and beaches 2.66 (moderate). The dominant bird species in the area are the Linci Swallow (15.73%) and the Little Egret (10.61%). While the areas that had the highest Sorensen species similarity index were ponds and mangroves with an index value of 62.5%.
17
Pires, Ana C. C., Daniel F. R. Cleary, Adelaide Almeida, Ângela Cunha, Simone Dealtry, Leda C. S. Mendonça-Hagler, Kornelia Smalla, and Newton C. M. Gomes. "Denaturing Gradient Gel Electrophoresis and Barcoded Pyrosequencing Reveal Unprecedented Archaeal Diversity in Mangrove Sediment and Rhizosphere Samples." Applied and Environmental Microbiology 78, no. 16 (June 1, 2012): 5520–28. http://dx.doi.org/10.1128/aem.00386-12.
Full textAbstract:
ABSTRACTMangroves are complex ecosystems that regulate nutrient and sediment fluxes to the open sea. The importance of bacteria and fungi in regulating nutrient cycles has led to an interest in their diversity and composition in mangroves. However, very few studies have assessedArchaeain mangroves, and virtually nothing is known about whether mangrove rhizospheres affect archaeal diversity and composition. Here, we studied the diversity and composition ofArchaeain mangrove bulk sediment and the rhizospheres of two mangrove trees,Rhizophora mangleandLaguncularia racemosa, using denaturing gradient gel electrophoresis (DGGE) and pyrosequencing of archaeal 16S rRNA genes with a nested-amplification approach. DGGE profiles revealed significant structural differences between bulk sediment and rhizosphere samples, suggesting that roots of both mangrove species influence the sediment archaeal community. Nearly all of the detected sequences obtained with pyrosequencing were identified asArchaea, but most were unclassified at the level of phylum or below. Archaeal richness was, furthermore, the highest in theL. racemosarhizosphere, intermediate in bulk sediment, and the lowest in theR. manglerhizosphere. This study shows that rhizosphere microhabitats ofR. mangleandL. racemosa, common plants in subtropical mangroves located in Rio de Janeiro, Brazil, hosted distinct archaeal assemblages.
18
Burnside, William. "Lost mangrove diversity." Nature Sustainability 1, no. 1 (January 2018): 11. http://dx.doi.org/10.1038/s41893-017-0015-7.
Full text
19
Basyuni, M., A. Susilowati, I. E. Susetya, and T. Kajita. "Framework application of e-DNA metabarcoding as a variable to evaluate mangrove ecosystem." IOP Conference Series: Earth and Environmental Science 912, no. 1 (November 1, 2021): 012004. http://dx.doi.org/10.1088/1755-1315/912/1/012004.
Full textAbstract:
Abstract Indonesia has the largest mangrove forests in the world, about 22.6% of the global total area. Mangrove forests are known to provide great benefits to the community as an ecosystem service and globally. Mangrove forests are threatened with loss due to anthropogenic and non-anthropogenic activities. Our previous research results show the important role of mangroves in the context of climate change for reducing greenhouse gas emissions and the diversity of terpenoids for salinity defense. The term metabarcoding of environmental DNA as a key indicator for evaluating mangrove ecosystems was introduced. This work proposed framework to study environmental DNA metabarcoding applications that can provide accurate information for evaluating mangrove ecosystems using an easy and fast method. The rich mangrove forest is getting disappeared without being recognized by its true diversity, function, and potential services to human beings. Application of conservation activities based on the species diversity in the mangrove ecosystem is almost impossible, because it is too difficult to study, in term of time and effort, despite the importance of acquiring the biodiversity information. However, DNA metabarcoding can be a “dream-like” tool and will contribute to obtain the species diversity data of the mangrove ecosystem, rapidly, globally, and massively.
20
Nurkhaeroni, Ulfah, and Agil Al Idrus. "Evidence of Successful Mangrove Conservation Avicennia marina viewing from Bivalvian Diversity in Central Lombok." Jurnal Biologi Tropis 23, no. 1 (January 11, 2023): 202–12. http://dx.doi.org/10.29303/jbt.v23i1.4360.
Full textAbstract:
Administratively, the coastal area of Central Lombok Regency is included in the mangrove conservation program which is currently in the process of rehabilitation. Shellfish as one of the associated biota that live in the mangrove ecosystem. This study aims to analyze the diversity (H'), uniformity (E), dominance (D), and abundance (R) of associated biota in the mangrove ecosystem conservation area on the south coast of Central Lombok Regency. Data analysis consisted of determining sampling stations, processing mangrove vegetation data, processing bivalve data, and environmental parameters. The results showed that there were nine types of mangroves, 15 types of bivalves were found. The highest density of mangroves in Dondon was Avicennia marina (84.16%) and the highest relative frequency of mangrove species (66.67%). The lowest mangrove density in Gili Perigi was Rhizophora stylosa (3.1%) and the lowest relative species frequency (6.67%). Furthermore, the highest relative frequency in Tanjung Batutiang is Avicennia marina (30.00%) and the lowest is Avicennia lanata (3.33). While the highest relative frequency in Gili Perigi was Avicennia marina (50.00%) and the lowest was Rhizopora stylosa (6.67%). The highest value of the dominance index on the Dondon Coast was 0.84 and was classified as low, meaning that no species dominated. In conclusion, the Indonesian government has initiated many mangrove Rehabilitation programs through replanting, especially on Lombok Island. This study shows that members of the genus Avicennia marina have the potential to increase the growth and stability of mangrove ecosystems on the south coast of Central Lombok.
21
Jufri, Mohammad, Gusti Syeransyah Rudy, and Kissinger Kissinger. "KOMPOSISI JENIS, STRUKTUR TEGAKAN DAN DIVERSITAS VEGETASI HUTAN BAKAU DI PULAU KARAMIAN KABUPATEN SUMENEP JAWA TIMUR." Jurnal Sylva Scienteae 5, no. 1 (February 28, 2022): 72. http://dx.doi.org/10.20527/jss.v5i1.5049.
Full textAbstract:
Mangroves become forest ecosystems with extreme physical factors, waterlogged habitats with high salinity located on beaches and rivers. Soil conditions in muddy. Mangrove forests become one of the important economic sources for people who live in the marine area of Karamian Island. The purpose of this study is to analyze the composition of mangrove forest vegetation types on keramian island, analyze horizontal vegetation structures in mangrove communities and analyze the deversity of mangrove forest diversity types. This study uses observation method with purposive sampling data collection technique as much as 3 research plots with a length of 200 m each plot. Important value index (INP) of Rhizopora sp tree (142.11 %), rhizopora sp pole level (275.79 %) and seedling level Rhizopora sp ( 88.84 %) with the diversity of species or diversity of mangrove forests on karamian island is still relatively low at every level of vegetation that has been observedHutan bakau (Mangrove) menjadi ekosistem hutan dengan faktor fisik yang ekstrim, habitat tergenang air dengan salinitas tinggi yang berada di pantai dan sungai. Kondisi tanah pada hutan mangrove berlumpur. Hutan bakau menajadi salah satu sumber ekonomi penting bagi manusia yang berada dan tinggal di wilayah perisir laut Pulau Karamian. Tujuan penelitian ini untuk menganalisis komposisi jenis vegetasi hutan mangrove di pulau Keramian, menganalisis struktur vegetasi horizontal pada komunits mangrove serta menganalisis deversitas jenis keragaman hutan mangrove. Penelitian ini menggunakn metode observasi dengan dengan teknik pengambilan data purposive sampling sebanyak 3 plot penelitian dengan panjang masing-masing plot 200 m. Indeks nilai penting (INP) tingkaat pohon Rhizopora sp (142,11 %), tingkat tiang Rhizopora sp (275,79 %) dan tingkat semai Rhizopora sp ( 88,84 %) dengan diversitas jenis atau keragaman hutan mangrove di pulau Karamian masih tergolong rendah pada setiap tingkat vegetasi yang telah diamati
22
Cabuga Jr., Cresencio C., Aldrin B. Lopez, Neprissa E. Cuarteron, and Nñeka Jean A. Pangapalan. "Composition of Mangroves and Mangrove Associates in Barangay Ata Atahon, Nasipit, Agusan del Norte, Philippines." International Annals of Science 12, no. 1 (November 19, 2022): 22–30. http://dx.doi.org/10.21467/ias.12.1.22-30.
Full textAbstract:
Mangroves are essential components of the coastal biome and have an extremely productive ecosystem. It provides benefits for both the environment and humans. Valuation of the diversity and species composition plays a crucial role in the conservation and protection. This study aimed to assess the composition of mangroves and mangrove associates in Barangay Ata-Atahon, Nasipit, Agusan del Norte, Philippines. Three sampling stations were established with a 50-meter interval in every station. Transect lines of 50 meters were laid perpendicular to the shoreline. The results show that 19 species of mangroves and 5 mangrove associates were recorded. Ceriops decandra was found to be the dominant species with 303 individuals and constituting 36% of the entire mangroves population. While Camptostemon philippinensis, Rhizophora apiculata, Rhizophora mucronata had the lowest number of individuals and made up a combination of 5%. In mangrove associates, Avicennia rumphiana made up 47% of the population and was followed by Avicennia marina (40%). This implied that the study area is less diverse based on the observed species when compared to the 46-mangrove species found in the Philippines alone. Necessarily, reforestation and conservation efforts must be attained to fill the gaps between the community and mangrove sustainability. Thus, determining the species diversity and composition measures ecological status. Mitigations and ecological management must be enacted by the locality to further conserve the mangrove ecosystem.
23
Nawar, M. K., M. Basyuni, and C. Hanum. "Diversity of mangrove species associated with zonation in Lubuk Kertang Village and Pulau Sembilan, North Sumatra." IOP Conference Series: Earth and Environmental Science 912, no. 1 (November 1, 2021): 012007. http://dx.doi.org/10.1088/1755-1315/912/1/012007.
Full textAbstract:
Abstract The Research about the diversity of mangrove species associated with zonation in Lubuk Kertang Village and Pulau Sembilan, Langkat Regency, North Sumatera was conducted in March – April 2021. This study aims to determine the diversity of mangrove species based on zoning observations in Lubuk Kertang Village and Pulau Sembilan. The research was conducted using the exploration method. The observation zone for the diversity of mangrove species is divided into three zones, namely zone 1 in brackish or almost fresh waters behind the actual green mangroves, zone 2 along the river, brackish to almost fresh, and zone 3 on the part facing the sea. The results of the study were fifteen mangrove species with two different mangrove groups, namely four true mangrove species (Lumnitzera racemosa, L. littorea, Nypa fruticans, and Scyphyphora hydrophyllacea) and eleven associated mangrove species (A. auriculiformis, Barringtonia asiatica, Casuarina equestifolia, Hibiscus tiliaceus, Melastoma candidum, Morinda citrifolia, Pandanus odoratatissima, Pongamia. Pinnata, Sesuvium portulcastrum, Stachytarpheta jamaicensis, and Terminalia catappa). Furthermore, the observations in zone 1 were dominated by mangrove association groups, namely A. auriculiformis, B. asiatica, C. equestifolia, H. tiliaceus, M. candidum, M. citrifolia, P. odoratatissima, P. pinnata, S. portulcastrum, S. jamaicensis, and T. catappa, in zone 2, namely L. littorea and L. racemosa and in zone 3, namely N. fruticans and S. hydrophyllacea, zones 2 and 3 are dominated by true mangrove groups. This shows that data on the diversity of mangrove species is very necessary to preserve mangrove species in Lubuk Kertang Village and Pulau Sembilan and the growing zone of mangrove species is natural zoning of mangrove forests.
24
Rusdiana, Omo, and Fajar Alif Sam Pangestu. "KOMPOSISI JENIS MANGROVE DAN PENGETAHUAN MASYARAKAT TERHADAP KAWASAN MANGROVE DESA SAYOANG, HALMAHERA SELATAN, MALUKU UTARA Mangrove Species Compotition and Community Knowledge of Mangrove Area in Sayoang Village, Distric of South Halmahera." Journal of Tropical Silviculture 8, no. 1 (June 19, 2017): 63–68. http://dx.doi.org/10.29244/j-siltrop.8.1.63-68.
Full textAbstract:
The area of mangrove forests in Indonesia is currently only spanning as much as 3.4 milion acres, so there is a need for the participation of the government and community to maintain its sustainability. South Halmahera is the district with the largest mangrove area in the North Maluku Province. One of the mangrove areas in the District of South Halmahera is located at Sayoang Village, East Bacan Subdistrict Up until its eleventh founding anniversary, this district have never conducted an inventorizing of its mangroves, both ecological and social studies in the field of public. This study aims to analyze the compotition of mangrove species in Sayoang Village, East Bacan Subdistrict, South Halmahera, and identify the knowledge of surrounding communities of mangrove areas as protected areas. Data were retrieved using sampling method with applications terraced paths, and analyzed by calculating its important value index (INP) and its index value diversity (IVD). The public social data were taken using in-depth interviews and questionnaires. Results obtained from this study show that the mangrove forest in Sayoang Village, East Bacan District, Halmahera, consists of major mangrove species with as many as eleven species belonging to families Rhizophoraceae, Sonneratiaceae, Avicenniaceae, Meliaceae and Myrtaceae, and as many as three species of minor mangrove belonging to families of Loranthaceae, Acanthaceae, and Pteridaceae. The mangrove's species diversity and richness is and low, but it has high evenness. The results showed that 60% of total respondents know the benefit of mangrove as fish habitat, while for mangrove area as conserving areas, 50% of total respondent don't know the status of the area. The cutting problems happened in mangrove areas, 90% of total respondent know the activity and 85% of total respondent think that the logging activities in mangrove area is still allowed. The management activity of mangrove area in Sayoang village hasn't been conducted, either by the community or by local Dinas Kehutanan, and 53% of total respondent still wishing the mangrove can give more benefit economically.Key words: Mangrove forest, mangrove protected areas, community knowledge
25
Lal, Hari, Sanjay Singh, and Animesh Sinha. "Vegetational Diversity and its Change Dynamics in Indian Sundarbans." Indian Journal of Forestry 37, no. 4 (December 1, 2014): 365–70. http://dx.doi.org/10.54207/bsmps1000-2014-6z9587.
Full textAbstract:
Sunderban, the mangroves in the Ganga-Brahmaputra-Meghna delta shared between India and Bangladesh are the largest coastal wetland system, well known for their floral diversity. Vegetation survey and analysis was carried out at 42 forest sites randomly selected in Sundarban to record 30 species of mangrove plants belonging to 18 families. Change dynamics of mangrove forests was also studied taking Champion and Seth (1968) forest type classification as a baseline to record striking changes in forest composition. Significant changes were observed in vegetation composition at sites previously demarcated under a particular sub-type. Palm swamp with predominantly Phoenix paludosa have converted into mangrove scrub with mixed species composition. Some new species have emerged in pure mangrove forest (4B/TS2) which has acquired character of salt water mixed forest (Heretiera). These composition and structure changes of Sundarban forests may be attributed climatic change and anthropogenic pressure.
26
Kimberly Craig and Abdullah Ansari. "A preliminary investigation of endophytic fungal diversity at Hope, East Coast Demerara, Guyana." GSC Biological and Pharmaceutical Sciences 17, no. 2 (November 30, 2021): 044–48. http://dx.doi.org/10.30574/gscbps.2021.17.2.0324.
Full textAbstract:
Foliar endophytic fungi spend a part of their life cycle on the leaves of plants. They may demonstrate no apparent symptoms but may also cause disease at a later time in the plant’s life. Studies investigating foliar fungal endophytes of mangroves are limited. Therefore, the purpose of this study was to investigate the foliar fungal endophytes present on the leaves of three mangrove species: namely Red mangrove (Rhizophora mangle), Black mangrove (Avicennia germinans) and White mangrove (Laguncularia racemosa). The study site was an area located at Hope, East Coast Demerara, and South America, Guyana. Out of sixty (60) leaf samples that were prepared, fourteen (14) fungal isolates were identified. Most of the fungi isolated in the study were found to be Hyphomycetes (Aspergillus, Fusarium, Penicillium, Alternaria, Cladosporium and Curvularia) while the others were Zygomorphic (Mucor and Rhizopus). The ANOVA calculations for the isolates from the three mangrove species were found to not be statistically significant. R mangle was the preferred host out of the three (3) species. The findings of this study confirm that mangroves have rich endophytic diversity and demonstrate rich research and biochemical potential.
27
McGregor, Steven, and Nadine A. Strydom. "The abundance, diversity and distribution of small fishes in mangrove and non-mangrove estuaries in warm temperate South Africa." Scientia Marina 82, no. 2 (July 6, 2018): 81. http://dx.doi.org/10.3989/scimar.04744.31a.
Full textAbstract:
Mangroves in tropical and subtropical regions have been well documented in terms of the advantages they provide and their role in structuring ichthyofaunal assemblages, but little is known about their warm temperate counterparts. The study aimed to investigate the importance of warm temperate mangroves by comparing the abundance, diversity and distribution of small fishes in mangrove and non-mangrove estuaries in warm temperate South Africa. A 50x2 m (12-mm mesh) seine net was used over three summer seasons to sample small fishes in the Gonubie, Qora, Nahoon and Xhora estuaries (the latter two being mangrove estuaries). Fish abundance and diversity showed little variation among estuaries, despite the presence of mangroves. Estuaries in warm temperate areas are not only at the edge of mangrove distribution, but also offer alternative habitats which lend similar advantages to fish survival. It appears that warm temperate ichthyofauna have not yet evolved a dependence on mangrove systems in terms of the food, refuge and other ecological services they provide. Understanding the function of habitats and their value in enhancing fish survival in estuarine nursery areas is essential for fish conservation.
28
Merly, Sendy Lely, Reny Sianturi, and Alfonsia Lusi Nini. "Study of Correlation and Diversity of Gastropods at Mangrove Ecosystem in Payum Beach, Merauke." Jurnal Moluska Indonesia 6, no. 1 (April 1, 2022): 12–20. http://dx.doi.org/10.54115/jmi.v6i1.56.
Full textAbstract:
This study had two aims, first was to determine the index of diversity, evenness, richness and dominance of gastropods species in the mangrove ecosystem, to assess the important value index of mangroves in the mangrove ecosystem, and the second one to understand the association of gastropods and mangrove in the mangrove ecosystem in Payum Beach, Merauke Regency. This research was conducted in September-October2021. This research using method of transect with a 100 m lenght of transect size. The research location devided into two station that are distinguished by the mangrove ecosystem to see the associated mollusc species. There were 8 species of gastropods that were analyzed including: Terebralia palustris, Terebralia semistriata, Telescopium telescopium, Cassidula angulifera, Cerithidea obstusa, Littorina intermedia, Littorina pallencens, and Littorina scabra. The diversity index (H’) of gastropods is 1,9370 so it is categorized as moderate, meanwhile the richness index (R) is 0,86 and the dominance (C) 0,16 both of these categorized as low, whilst inversely proportional to the evenness index (E) which shows the number 0,93 which means high evenness so that the community is stable. Furthermore, there are 3 types of mangroves namely Bruguirea cylindrica, Lumnitzera racemosa, dan Aegialitis annulata. Nonetheless, the relationship between the abundance of individuals of gastropods and the presence of mangroves at the research sites at station I and station II tended to be weak.
29
Dela Cruz, Honey Dee, Kyl Revo Czarkov Del Campo, Kim Justin Duque, Jenlove Vincent Elesis, Johanna Therese Enero, Kevin Bryan Gaitano, Laurice Glen Gamayot, et al. "Status of mangroves and faunistic components in Vanishing Island, Island Garden City of Samal, Philippines." University of Mindanao International Multidisciplinary Research Journal 6, no. 1 (December 31, 2020): 106–20. http://dx.doi.org/10.55990/umimrj.v5i1.510.
Full textAbstract:
This study aimed to determine the status of the mangrove ecosystem in Island Garden City of Samal, specifically in Vanishing Island or is also known as Sanipaan Marine Park, through species composition assessment. It also aimed to discover the density, diversity, associated faunal species, and number of mangrove trees, saplings, and seedlings of different species as well as abiotic factors such as pH level and salinity. After analysis of the results, it was found that the mangrove species abundance is low; moreover, mangroves also have a very low classification of diversity, which implied that there is slim variation of species. Furthermore, the very low diversity of the faunal species also meant that there is food and habitat loss. The number of mangrove trees, saplings, and seedlings is also connected to the diversity and density, resulting in low population count. Lastly, abiotic factors also reflect to others results as the pH level is strong alkaline; salinity is of standard level that can be tolerated by trees but not by mangrove saplings and seedlings. Therefore, the mangrove ecosystem in Sanipaan Marine Park is unhealthy despite it being a marine protected area. It is recommended to plant different mangrove seedlings, periodic monitoring of these seedlings and strict implementation of city ordinances.
30
Ruruh, Alexander, and Ernikawati Ernikawati. "STRUKTUR VEGETASI MANGROVE DI PESISIR PANTAI DESA DAMBALO KECAMATAN TOMILITO KABUPATEN GORONTALO UTARA." Jurnal Penelitian Kehutanan BONITA 3, no. 1 (July 26, 2021): 1. http://dx.doi.org/10.55285/bonita.v3i1.537.
Full textAbstract:
Mangroves are tropical coastal vegetation communities dominated by several unique tree species that can be affected by tides. Damage to mangrove forests can be caused by two main factors, namely human activity factors and natural factors. The purpose of this study was to analyze the structure of mangrove vegetation by looking at density, frequency, Impact Value Index (IVI) and species diversity (H ') on the coast of Dambalo Village, Tomilito Sub-district, North Gorontalo District. The method used is a combination of the path method and the checkered line method so that measuring squares are created within the paths. The results showed that the number of mangrove diversity was 11 species, with the Importance Value Index at the tree level of the Rhizophora apiculata species having the highest value of 61.28% and the seedling phase with the same species Rhizophora apiculata having the highest index of importance of 29.80%. The main conclusion from this research is that the mangrove vegetation structure has an abundant level of species diversity. This shows that the index of species diversity in mangrove vegetation is H '= 2.2692 that species diversity is abundant.
31
Akhrianti, Irma, and Andi Gustomi. "The Analysis of Mangrove Community Ecological Index at the Coastal Area of Pangkalpinang City." Jurnal Ilmiah PLATAX 9, no. 2 (December 28, 2021): 356. http://dx.doi.org/10.35800/jip.v9i2.36870.
Full textAbstract:
This research was conducted in the coastal area of Pangkalpinang, Bangka Belitung Province which has an area of 89.4 km2 with a coastline of 36 km2 and is overgrown by mangrove communities that tend to be varied. The research aims to know mangrove community structure at the coastal Pangkalpinang City. This study uses a survey method consisting of 5 observation stations. Mangrove community data were collected using purposive sampling and line transect plot (LTP) methods; 30 m. Data analysis used was an ecological index consisting of a diversity index (Shannon Wienner), a uniformity index (Evenness), and a dominance index (Simpsons). The results showed that 22 species of mangroves were found in the coastal area of Pangkalpinang City, consisting of true mangroves (major and minor) and 2 species of associated mangroves. The type of Analysis of mangrove community structure includes diversity and evenness index at station 5 compared to other stations. However, the dominance index at station 5 was higher compared to the other stations, which was almost close to 1. Where the mangrove population of each type was not the same and there was a tendency for the population to be dominated by one type of mangrove.Keywords: Diversity; Dominance; Unformity; Pangkapinang AbstrakPenelitian ini dilakukan di Wilayah Pesisir Kota Pangkalpinang, Provinsi Kepulauan Bangka Belitung. Pangkalpinang merupakan ibukota propinsi Kepulauan Bangka Belitung yang memiliki area sebesar 89.4 km2 dengan panjang garis pantai 36 km2 dan banyak ditumbuhi oleh komunitas mangrove yang cukup bervariasi. Penelitian ini bertujuan untuk mengetahui struktur komunitas mangrove di wilayah pesisir Kota Pangkalpinang. Penelitian ini menggunakan metode survey yang terdiri dari 5 stasiun pengamatan. Pengampilan data komunitas mangrove yaitu dengan menggunakan metode purposive sampling dan line transect plot (LTP) sepanjang 30 meter. Analisis data yang digunakan adalah indeks ekologi yang terdiri dari indeks keanekatagaman (Shannon Wienner) , indeks keseragaman (Eveness), dan indeks dominansi (Simpsons). Hasil penelitian menunjukkan bahwa ditemukan 22 jenis mangrove di wilayah pesisir Kota Pangkalpinang yang terdiri dari mangrove sejati (mayor dan minor) serta 2 spesies dari mangrove asosiasi. Jenis mangrove yang memiliki kelimpahan jenis tertinggi di 5 lokasi penelitian adalah famili Rhizophoraceae. Analisis struktur komunitas mangrove yang meliputi keanekaragaman dan indeks kemerataan pada stasiun 5 dibandingkan stasiun lainnya. Namun indeks dominasi pada stasiun 5 lebih tinggi dibandingkan stasiun lainnya yang hampir mendekati 1. Dimana populasi mangrove masing-masing jenis tidak sama dan terdapat kecenderungan populasi didominasi oleh satu jenis mangrove. Kata kunci: Dominansi; Keanekaragaman; Keseragaman; Pangkalpinang
32
Sheetal, Z. L., P. Madhuri, and K. Hemant. "Spider (Arachnida: Araneae) diversity at Godrej mangroves, Vikhroli, Mumbai, Maharashtra, India." ENTOMON 47, no. 3 (September 30, 2022): 305–12. http://dx.doi.org/10.33307/entomon.v47i3.765.
Full textAbstract:
Among the varied aquatic and terrestrial invertebrates diversity of mangrove ecosystem, spiders are considered to be an important bioindicators of ecological health. Studies on the spider diversity in the mangroves at Vikhroli, Mumbai, Maharashtra conducted resulted in the documentation of a total of 38 spider species belonging to the 33 genera under 12 families. Salticidae was found to be the dominant with 10 species from 10 genera, followed by Araneidae (9 species and 7 genera). The survey done in three mangrove zones revealed that zone II with moderate mangrove density resulted in the highest diversity (H=0.89) of spiders. Guild structure analysis revealed six different guilds. Stalkers (Salticidae and Oxyopidae) were the predominant feeding guild (34.00%). Seasonal (pre monsoon, monsoon and post monsoon) analysis showed more species diversity in the month of June to September.
33
Andy R. Mojiol and Nurul N. Salleh. "Mangrove Species Diversity and Structure at Kudat and Banggi Island, Sabah." Journal of Tropical Resources and Sustainable Science (JTRSS) 5, no. 1 (June 30, 2017): 27–32. http://dx.doi.org/10.47253/jtrss.v5i1.651.
Full textAbstract:
The aim of the study is to determine and record mangrove species biodiversity and structure at Kudat Mainland and Banggi Island. The sampling plots with a size of 100 m x 10 m and four (4) replication was established to measure the species diversity by using Shannon-Wiener Index (H’), Shannon Evenness Index (E) and Simpson’s Diversity Index (D). From the results, a total of 10 mangrove species were recorded from both study areas. There are eight (8) species at Kudat Mainland and six (6) species at Banggi Island. The diversity indexes give the value of H’, E and D with a similar value at both study areas. At Kudat Mainland, H’ = 1.51, E = 0.73 and D = 0.29 while at Banggi Island H’ = 1.50, E = 0.84 and D = 0.29. The results of these values show the value of diversity in both areas is less diverse. The findings show the representation of mangrove species in both areas are may be affected by the water salinity, tidal inundations, soil conditions and propagules size. While the dependency of local people on mangrove’s wood and tree’s age will be affected the distribution of mangrove diameter. Meanwhile, the current of winds and types of species represented in a plot assume affected the results of distributions of mangrove height. Represented of species less than 8 species assume affected the values of mangrove species diversity. In conclusion, the mangrove species at Kudat district can be determined and recorded and the diversity of mangrove species in both areas is less diverse.
34
Mishra, Shwetakshi. "Impact of Urbanization on Declining Mangrove Health of Goa." International Journal of Research Publication and Reviews 04, no. 01 (2023): 1566–74. http://dx.doi.org/10.55248/gengpi.2023.4144.
Full textAbstract:
Mangrove ecosystems are dense forests along the tidal estuaries and comprise incredible biological diversity. Mangrove trees are salt tolerant and survive in muddy anaerobic soils by the presence of pneumatophores (breathing roots). Mangroves have crucial ecological and economic importance. They carry out the source and sink in the carbon cycle, and protect the coasts from floods, tsunamis and other disasters. Mangrove leaves and bark are potential sources of pharmaceutical compounds to treat AIDS, jaundice and cancer. However, unregulated urban development, increased pollution, altered distribution and national highway expansion, bridges and increased tourism has resulted in the most destructive impact on mangrove forest. In the present study, a field survey of mangrove sites in Goa like the areas of Cortalim, Ribandar, Old Goa, etc. has conducted to observe the mangrove morphology, and growing pattern and analyse the impact of urbanization on declining mangrove health. Further, a survey was conducted to track public awareness about the declining mangrove ecosystem. The individuals were divided into four different categories and five questions were asked including whether they are aware of mangroves, their occurrence, their decline, and measures to protect them. Results suggest that most people are aware of declining mangroves but haven't experienced mangrove declines in their locality. Most people suggest that creating awareness, building mangrove farms and implementing strict rules can help in conserving mangroves.
35
Schmitz, Hermes J., Paulo R. P. Hofmann, and Vera L. S. Valente. "Assemblages of drosophilids (Diptera, Drosophilidae) in mangrove forests: community ecology and species diversity." Iheringia. Série Zoologia 100, no. 2 (June 2010): 133–40. http://dx.doi.org/10.1590/s0073-47212010000200008.
Full textAbstract:
Brazilian fauna of drosophilids has been researched in various ecosystems, but those in mangrove forests remain overlooked in Brazil and elsewhere. The present study attempts to characterise the assemblages of drosophilids of this environment, based on 28 collections taken in three mangrove areas in Santa Catarina Island, southern Brazil. The three mangroves surveyed were different in their surroundings, which varied from highly urbanised areas to conservation areas with natural vegetation. Overall, 69 species were collected, and no remarkable difference was detected in species composition and abundances or in the richness, evenness and heterogeneity between sites. The species abundance distribution observed fitted to a theoretical lognormal distribution in the three mangroves. The species richness scored and the performance of the species richness estimators showed an unexpectedly high diversity, considering the very low floristic diversity and the harsh conditions of the environment. Regarding species composition and abundances, the drosophilid mangrove assemblages were shown to be more similar to those found in open environments, with a marked dominance of exotic species. Finally, considering the apparent lack of feeding and breeding sites, we suggest that mangrove forests are acting as sink habitats for the drosophilids populations.
36
Lu, Kaiqi, Qiu Yang, Yamin Jiang, and Wenjie Liu. "Changes in Temporal Dynamics and Factors Influencing the Environment of the Bacterial Community in Mangrove Rhizosphere Sediments in Hainan." Sustainability 14, no. 12 (June 17, 2022): 7415. http://dx.doi.org/10.3390/su14127415.
Full textAbstract:
The structural characteristics of the rhizosphere soil’s microbial community is crucial to understanding the ecological function of mangroves. However, the mechanism influencing mangrove plants in soil microbial communities has yet to be determined. Here, the mangrove ecosystem of Xinying Mangrove National Wetland Park in Hainan Province was taken as the research object. The microbial communities, external regulatory factors, and the relationship between communities were analyzed using 16S rRNA high-throughput sequencing in the rhizosphere and non-rhizosphere sediments of mangrove forests under different spatiotemporal conditions. The results showed that there was no significant difference in the α-diversity of the bacterial community between the rhizosphere and non-rhizosphere sediments. However, β-diversity was significantly different. Redundancy analysis (RDA) showed that other environmental factors besides sulfide and Fe2+ affected the bacterial community structure in sediments. The co-occurrence pattern analysis of bacteria in the mangrove ecosystem indicates that the bacteria in rhizosphere sediments were more closely related than those in non-rhizosphere sediments. The results reveal significant differences between the rhizosphere and non-rhizosphere bacterial community diversity, structure, and their interaction in the mangrove ecosystem. Therefore, the ecological system of the mangrove wetland needs to be preserved and rehabilitated, which would have a tremendous impact on the sustainable development.
37
Lim, Kah Kheng, João Neiva, M. Nazre, and Ester A. Serrão. "GENETIC DIVERSITY OF NATURAL AND RESTORED API-API PUTIH (AVICENNIA ALBA) POPULATIONS IN THE WEST COAST OF PENINSULAR MALAYSIA." Environment & Ecosystem Science 6, no. 1 (2022): 29–33. http://dx.doi.org/10.26480/ees.01.2022.29.33.
Full textAbstract:
A large tract of mangrove forest in Malaysia has been lost due to increased anthropogenic activities. Restorative practices of mangrove forest have been adopted nationwide to re-establish ecosystem services in combating coastal erosion. However, genetic considerations in local mangrove restoration practices are still far lacking despite the vast literature on their genetic diversity. To understand whether the restored mangroves can impact the genetic diversity distribution among natural populations, we used eight microsatellite markers to assess the genetic diversity of the Api-api putih (Avicennia alba) between the natural and restored populations along the west coast of Peninsular Malaysia. We found no difference in terms of genetic diversity between these populations. Two genetic clusters were detected among A. alba along the west coast based on Bayesian clustering and discriminant analysis of principal components (DAPC). The southwest monsoon current circulation that coincides the timing of seed dispersal of A. alba may explain such pattern of genetic differentiation. Despite the minimal genetic structure, our results suggest that seed sourcing from either population is viable for the local mangrove restoration programs in the future.
38
Abubakar, Salim, Masykhur Abdul Kadir Masykhur Abdul Kadir, Reni Tyas Asrining Pertiwi, Rina Rina, Riyadi Subur, Sunarti Sunarti, Yuyun Abubakar, Adi Noman Susanto, and Ariyati H. Fadel. "Fauna Biodiversity as Indicator of Mangrove Forest Health on Moti Island, Moti District, Ternate City." Jurnal Biologi Tropis 21, no. 3 (October 12, 2021): 974–82. http://dx.doi.org/10.29303/jbt.v21i3.3009.
Full textAbstract:
The health condition of mangrove forests can be determined by assessing forest health indicators. One of the indicators used in determining the health of mangrove forests is faunal biodiversity. Measurement of forest health is a step that can be taken to ensure forest functions and benefits. The study's objectives were to determine the composition of mangrove species and mangrove forest fauna (birds and epifauna), to determine the structure of the fauna community which includes species diversity and species dominance and to determine the health condition of mangrove forests on Moti Island, Ternate Island District. This research was conducted on Moti Island, Moti District, Ternate City, North Maluku Province for six months, April - September 2021. A Sampling of mangroves was carried out using the "spot check" method. Meanwhile, the method used to assess mangroves' health condition refers to the FHM (Forest Health Monitoring) method. There are nine species of mangrove, namely Rhizophora apiculata, Rhizophora stylosa, Rhizophora mucronata, Bruguiera gymnorrhiza, Sonneratia alba, Xylocarpus granatum, Avicennia offincinalis, A. marina and Nypa fruticans. While the composition of fauna species is as many as 18 species consisting of Epifauna (Gastropoda = 12 species, Bivalve = 2 species) and birds as many as four species. The diversity of mangrove forest fauna species in all research locations is moderate and no species dominate. The health status of mangrove forests, both Tafaga and Figur villages, has 60% good condition, 20% moderate and poor conditions.
39
Sina, Sina, Retna Astuti Kuswardani, and Jamilah Nasution. "KEANEKARAGAMAN JENIS MANGROVE DI PANTAI MUTIARA DESA KOTA PARI KECAMATAN PANTAI CERMIN KABUPATEN SERDANG BEDAGAI PROVINSI SUMATERA UTARA." BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) 2, no. 1 (August 30, 2017): 81–95. http://dx.doi.org/10.31289/biolink.v2i1.774.
Full textAbstract:
This Research on the diversity of Mangrove species in Pantai Mutiara Pari Village, Pantai Cermin Subdistrict, Serdang Bedagai Regency, North Sumatera Province was conducted in October s.d November 2012. The objective of this research is to know the diversity of species and mangrove vegetation based on growth level. The research method is explorative survey technique method. The sample collection for the research vegetation data consisted of observation plots with a total of 12 plots derived from 3 transects. The results of the study were 6 species of mangroves: Avicennia marina, Bruguiera sexangula, Rhizophora apiculata, Rhizophora stylosa, Rhizophora mucronata, and Nypa fruticans, belonging to 3 families namely Avicenniaceae, Rhizophoraceae, and Arecaceae. From the analysis, it is known that Avicennia marina, Rhizophora apiculata and Rhizophora stylosa species dominate the coastal area of Pantai Mutiara Desa Kota Pari Pantai Pantai Cermin. Based on the analysis of data obtained, the index of diversity (H ') of mangroves on the beach is low, ie the seedlings H' = 0.87, the H1 = 1,34 and the H '= 1.20. This indicates that the type of mangrove contained in the beach is small.
40
Akhrianti, Irma, Franto Franto, Eddy Nurtjahya, and Indra Ambalika Syari. "STRUKTUR KOMUNITAS VEGETASI MANGROVE DI PESISIR UTARA PULAU MENDANAU DAN PULAU BATU DINDING, KECAMATAN SELAT NASIK KABUPATEN BELITUNG." Akuatik: Jurnal Sumberdaya Perairan 12, no. 1 (February 4, 2021): 13–23. http://dx.doi.org/10.33019/akuatik.v12i1.856.
Full textAbstract:
Mendanau Island and Batu Dinding Island are part of small island groups that have a high diversity and density of mangroves. Based on administratively, Mendanau Island is located in the coastal area of Simpang Pesak District, Belitung Regency, which consist of one large island (Mendanau Island) and 1 small island (Batu Dinding Island). The lack of data about potential, diversity, and community structure of mangroves on the north coast of Mendanau Island and Batu Dinding Island, therefore this research is needed as a database for planning, sustainability management of mangroves at the coastal area and small island. The data of mangrove vegetation was taken by purposive sampling method, with using line transect plot (LTP). Ilustration of sampling design is each line transect have 3 plot / kuadratic transect sized 10 m x 10 m (capling), 5 m x 5m (sapling), 1m x 1 m (seedling). The result showed that there are 12 (twelve) mangrove species were found: jenis S. alba, R. apiculata, R. stylosa, R. mucronata, B. gymnorhiza, X. granatum, L. littorea. S. hydrophyllacea, S. taccada, H. tiliaceus, Pandanus, dan I. pes-caprae. Mangrove community structure and mangrove condition on the North Coast of Mendanau Island, at several observation stations, was damaged (poor conditions), while the status of the mangrove conditions on Pulau Batu Dinding was still relatively good
41
Cannicci, Stefano, Shing Yip Lee, Henrique Bravo, Jaime Ricardo Cantera-Kintz, Farid Dahdouh-Guebas, Sara Fratini, Marco Fusi, et al. "A functional analysis reveals extremely low redundancy in global mangrove invertebrate fauna." Proceedings of the National Academy of Sciences 118, no. 32 (July 26, 2021): e2016913118. http://dx.doi.org/10.1073/pnas.2016913118.
Full textAbstract:
Deforestation results in habitat fragmentation, decreasing diversity, and functional degradation. For mangroves, no data are available on the impact of deforestation on the diversity and functionality of the specialized invertebrate fauna, critical for their functioning. We compiled a global dataset of mangrove invertebrate fauna comprising 364 species from 16 locations, classified into 64 functional entities (FEs). For each location, we calculated taxonomic distinctness (Δ+), functional richness (FRi), functional redundancy (FRe), and functional vulnerability (FVu) to assess functional integrity. Δ+ and FRi were significantly related to air temperature but not to geomorphic characteristics, mirroring the global biodiversity anomaly of mangrove trees. Neither of those two indices was linked to forest area, but both sharply decreased in human-impacted mangroves. About 60% of the locations showed an average FRe < 2, indicating that most of the FEs comprised one species only. Notable exceptions were the Eastern Indian Ocean and west Pacific Ocean locations, but also in this region, 57% of the FEs had no redundancy, placing mangroves among the most vulnerable ecosystems on the planet. Our study shows that despite low redundancy, even small mangrove patches host truly multifunctional faunal assemblages, ultimately underpinning their services. However, our analyses also suggest that even a modest local loss of invertebrate diversity could have significant negative consequences for many mangroves and cascading effects for adjacent ecosystems. This pattern of faunal-mediated ecosystem functionality is crucial for assessing the vulnerability of mangrove forests to anthropogenic impact and provides an approach to planning their effective conservation and restoration.
42
Arulnayagam, Ahalya, Jong-Seong Khim, and Jinsoon Park. "Floral and Faunal Diversity in Sri Lankan Mangrove Forests: A Systematic Review." Sustainability 13, no. 17 (August 24, 2021): 9487. http://dx.doi.org/10.3390/su13179487.
Full textAbstract:
The paper gives a historical overview, and a summary of key findings from 70 previously published research papers giving scientific data over the years from 1980 to 2019. They concern the flora and/or fauna in the mangrove forests along the Sri Lankan coast, addressing diversity, taxonomy, distribution, and ecological interactions. A total of 28 mangrove floral species from 13 plant families have been reported so far. Similarly, faunal diversity studies have reported 99 invertebrates, dominated by Arthropoda (n = 55) and Mollusca (n = 26), and 214 vertebrates comprising Pisces (n = 112), Aves (n = 72), Reptilia (n = 13) and Amphibia (n = 2). Most studies have been concentrated on the Southwestern coast (nflora = 20, nfauna = 6). Negombo has been a hotspot for mangrove research, with a higher number of studies (nflora = 11, nfauna = 5). The majority of the mangrove studies were focused on mangrove floral diversity and taxonomy and were conducted over recent years (2010–2019). Scientific data on mangrove fauna is restricted to a certain geographical extent. This paper intends to identify the research gaps in the field of Sri Lankan mangroves regarding various aspects and suggests advancement in future studies. Overall, outputs from the present study would be helpful for upcoming researchers to focus more on filling the gaps in knowledge.
43
GINANTRA, I. Ketut, I. Ketut MUKSIN, Martin JONI, and Luh Putu Eswaryanti Kusuma YUNI. "Bird Diversity as a Support of Ecotourism Activities in the Mangrove Ecosystem of Lembongan Island Bali." Journal of Environmental Management and Tourism 13, no. 7 (December 2, 2022): 1840. http://dx.doi.org/10.14505/jemt.v13.7(63).04.
Full textAbstract:
Research has been carried out on bird diversity to support ecotourism attractions in the mangrove area of Lembongan Island. The research was conducted in April - August 2021. The focus of this research is the identification, description of bird species and the use of habitats for bird activities. To achieve this goal, the following steps were taken: Identification of bird species based on morphological characteristics, determining the abundance of bird species using the point count method, determining bird activity at each ecosystem site of mangroves with ad libitum sampling method. Bird species diversity was determined by the Shannon-Wiener index. The results of the study found 32 species of birds belonging to 26 families. Most of the birds found were terrestrial birds with 21 species, and water birds (shore birds) with 11 species. Overall, the diversity of bird species in the mangrove ecosystem is in the high category (diversity index 3.03) and the species evenness index is high (evenness index 0.87). The types of vegetation used by birds at the 7 research sites were mangrove vegetation, mangrove associations and dry land vegetation. The presence of birds, bird conservation status, bird activities, habitat use by birds in mangrove habitats are attractive attractions for ecotourism.
44
Melgaço Bezerra, Walderly, Tallita Cruz Lopes Tavares, Vanessa Lúcia Rodrigues Nogueira, Leonardo Ribeiro Oliveira Normando, Tatiana A. Bomfim, Alysson Lira Angelim, and Vania Maria Maciel Melo. "BACTERIOME ASSOCIATED WITH Rhizophora mangle SEDIMENTS WITHIN BRAZIL SEMI-ARID MANGROVES." Arquivos de Ciências do Mar 55, Especial (March 18, 2022): 34–51. http://dx.doi.org/10.32360/acmar.v55iespecial.78512.
Full textAbstract:
Microorganisms play important roles in nutrient cycling in mangrove ecosystems and knowledge on the plant/microorganism association is essential to better understand the functioning of this environment. Rhizophora mangle is the dominant tree species within Brazilian mangroves and little information is available on the microbiota associated with this plant species. In this context, the aim of this study was to survey the taxonomic diversity of bacteria in the R. mangle root zones in mangroves within the semi-arid region of Northeast Brazil submitted to different human disturbances, intending to determine the bacterialfingerprint associated with this habitat. The total DNA extracted from sediments of different mangroves was pooled and used for construction of 16S rDNA cloning libraries, which resulted in 663 sequences with an average size of 809 bp. All mangroves were rich in different phyla of the Bacteria domain, with Acidobacteria, Bacteroidetes, Chloroflexi, and Proteobacteria being detected in all locations. Proteobacteria was dominant in all mangroves, and it was mainly represented by Alpha, Delta, and Gammaproteobacteria. The greatest richness was found in the Timonha river mangrove, with 13 phyla, a location considered more preserved compared to other mangroves. The lowest richness was found in Ceará river mangrove, with only seven phyla. This mangrove is threatened by intense urbanization. The results clearly showed that the taxonomic diversity of bacteria from mangroves subjected to intense urbanization have decreased, highlighting the risks of these changes for the functioning of important microbe-mediated processes and related ecosystem services.
Keywords: brazilian mangroves, semi-arid, Rhizophora mangle, rRNA 16S, clone library.
45
Hu, Bochao, Junxian Liao, Qijiong Zhang, Suli Ding, Mengyuan He, Yue Qiao, Zuye Zhang, Chenjing Shang, and Si Chen. "Diversity and Vertical Distribution of Sedimentary Bacterial Communities and Its Association with Metal Bioavailability in Three Distinct Mangrove Reserves of South China." Water 14, no. 6 (March 19, 2022): 971. http://dx.doi.org/10.3390/w14060971.
Full textAbstract:
The structure of sedimentary bacterial communities in mangroves depends on environmental factors such as pH, salinity, organic matter content, and metal pollution. To investigate the effect of heavy metal pollution on such communities, core samples of sediments from four sites in three distinct mangrove reserves (Golden Bay Mangrove Reserve in Beihai, Guangxi province (GXJHW), Shankou Mangrove Reserve in Hepu, Guangxi province (GXSK), and MaiPo mangrove in Hong Kong (MPCT and MPFQ)) in South China were analyzed for physicochemical properties, multiple chemical forms of metals, and vertical bacterial diversity. Sedimentary bacterial communities varied greatly among the different sampling sites, with biodiversity decreasing in the order of GXSK, GXJHW, MPFQ, and MPCT. Proteobacteria was the dominant phylum, followed by Chloroflexi, across all four sampling sites. Multivariate statistical analysis of the effect of environmental factors on the sedimentary bacterial communities found that total carbon was the only physicochemical factor with a significant influence at all four sites. The correlations between environmental factors and bacterial structure were weak for the two sites in Guangxi province, but strong at MPCT in Hong Kong where environmental factors were almost all significantly negatively correlated with bacterial diversity. Variance partitioning analysis revealed that physicochemical properties and chemical forms of metals could explain most of the changes in bacterial diversity. Overall, we observed that heavy metal forms were more important than total metal content in influencing the sedimentary bacterial diversity in mangroves, consistent with the more bioavailable metal species having the greatest effect.
46
Puasa, Rio N., Adnan S. Wantasen, and Stephanus V. Mandagi. "Mapping of Mangrove Diversity in Kelurahan Tongkaina, Bunaken Sub-District, Manado." JURNAL ILMIAH PLATAX 6, no. 1 (May 3, 2018): 133. http://dx.doi.org/10.35800/jip.6.1.2018.19542.
Full textAbstract:
This research was conducted in coastal area of Tongkaina Village, Bunaken Sub-district, Manado City, North Sulawesi Province. The purpose of this study was to calculate the diversity of mangrove plants and map the zoning of mangrove species distribution in three research sites. The data collected are categorized as primary and secondary data. Primary data collection related to biophysical condition of mangrove ecosystem, including vegetation structure and area of mangrove cover in study site and further analyzed. Secondary data were collected from various literature studies, documentation and scientific papers and related legislation. Based on the obtained results, it was known that the diversity index of mangrove in Tongkaina is 1.71 which is categorized as medium in term of its diversity, because the value of H 'is greater than 1 and smaller than 3. This value means also that there was enough productivity, ecosystem condition is quite balanced, and moderate ecological pressures. The highest species diversity index was found in Sonneratia alba with an index of 0.37 and the lowest was in the Bruguiera gymnorrhiza species with index of 0.06. Mapping of mangrove species is done by taking coordinate points within quadrant at three research sites. Color degradation with rounded symbols are used to distinguish each species. The aims are designed to be able to easily distinguish between species visually and can be used as one method of mapping study on the diversity of mangroves. This study reveals the known levels of mangrove diversity are moderate. The existence of fishing activities and mooring boat by the local community contribute to mangrove land degradation. Indispensable protection or conservation through knowledge transfer and building awareness to the community, as well as providing an economic alternative for those utilizing mangrove for both household and commercial needs, in order to maintain better conditions are equally important.Keywords: Mapping, Mangrove, Diversity, TongkainaAbstrakPenelitian ini berlokasi di kawasan pesisir pantai Kelurahan Tongkaina, Kecamatan Bunaken Kota Manado Provinsi Sulawesi Utara. Tujuan dari penelitian ini yaitu untuk menghitung keanekaragaman hutan mangrove serta memetakan zonasi pembagian jenis mangrove di tiga stasiun penelitian. Data yang dikumpulkan adalah data primer dan data sekunder. Pengumpulan data primer berkaitan dengan kondisi biofisik ekosistem mangrove yaitu, struktur vegetasi dan luasan mangrove di daerah penelitian dan selanjutnya dianalisis. Kemudian data sekunder dikumpulkan dari berbagai kajian literature, dokumentasi dan tulisan-tulisan ilmiah serta peraturan perundang-undangan terkait. Pada hasil yang diperoleh diketahui nilai indeks keanekaragaman mangrove di Tongkaina adalah 1,71 dimana nilai indeks ini tergolong dalam kategori keanekaragaman sedang, karena nilai H’ lebih besar dari 1 dan lebih kecil dari 3, yang berarti produktivitas cukup, kondisi ekosistem cukup seimbang, dan tekanan ekologis sedang. Indeks Keanekaragaman spesies tertinggi didapati pada Sonneratia alba dengan nilai indeks 0,37 dan terendah ada pada spesies Bruguiera gymnorrhiza yang memiliki nilai indeks yaitu 0,06. Pemetaan jenis mangrove dilakukan dengan cara pengambilan titik koordinat pada kuadran di tiga stasiun penelitian. Degradasi warna dengan simbol bulat di pakai untuk membedakan tiap spesies. Hal ini bertujuan agar dapat dengan mudah membedakan antar spesies secara visual serta dapat dijadikan salah satu metode kajian untuk memetakan keanekaragaman mangrove. Diketahui tingkat keanekaragaman mangrove tergolong sedang. Adanya kegiatan pertambakan dan tambatan perahu masyarakat membuat lahan mangrove semakin berkurang. Sangat diperlukan adanya perlindungan atau pelestarian melalui pengetahuan dan penyadaran kepada masyarakat, serta memberikan alternatif ekonomi bagi yang memanfaatkan mangrove baik untuk kebutuhan rumah tangga ataupun komersial, demi menjaga perkembangan kondisi yang lebih baik.Kata kunci: Pemetaan, Mangrove, Keanekaragaman, Tongkaina
47
Kulkarni, Narendra, and Leela J. Bhosale. "Mangroves of Maharashtra State (India): Diversity and Sustainability." Plantae Scientia 4, no. 3 (June 12, 2021): 178–207. http://dx.doi.org/10.32439/ps.v4i3.178-207.
Full textAbstract:
Mangroves are defined as tropical and sub-tropical forests with a diverse floristic composition bordering the sea on muddy or peaty low lands periodically submerged or influenced by the tides. Maharashtra is one of the coastal states of India, with many rivers emerging from Sahyadri ranges and meeting the Arabian Sea. The coast line available for Maharashtra state is 720 km. Ratnagiri, Sindhudurg, Raigad, Thane and Mumbai are the five coastal districts of the state of Maharashtra. All the districts together have more than 55 small, medium and large estuaries. It is found that estuaries like Vijaydurg shows maximum mangrove area of and estuaries like Kelye shows minimum area. It also reveals that the species like E. agallocha, A. ilicifolius, R. mucronata, A. officinalis and A. marina show maximum percentage of occurrence as compared to the species like X. granatum, C. iripa, B. cylindrica, S. caseolaris, H.fomes and T. gallica. The studies on mangrove biodiversity in five districts show the major variations. The study found 20 typical mangroves, 10 halophytic species, 13 border line mangroves and 15 mangrove associates from all these districts. Among these the uncommon and threatened greet pied Hornbill (Buceros bicornis) have been found at some sites. Some of the common crab species are Uca roseus, Uca lactea annulipes and Uca vocans. The species like Scylla serrata and Portunus pelagius are edible. In the present study 13 sp. of Molluscs, 25 species of edible fish, 9 species of Reptilia, 45 sp. of birds and 10 species of Mammalia are found. It is found that out of twenty-four species analyzed, some species are analyzed as Critically Endangered (CR), some are found Endangered (EN). From this study it is found that all sites being under human pressure the natural zonation pattern is not seen. The existing zonation pattern is a result of natural distribution and human disturbances.
48
Tefarani, Rahmadyan, Nana Kariada Tri Martuti, and Sri Ngabekti. "Keanekaragaman Spesies Mangrove dan Zonasi di Wilayah Kelurahan Mangunharjo Kecamatan Tugu Kota Semarang." Life Science 8, no. 1 (April 25, 2019): 41–53. http://dx.doi.org/10.15294/lifesci.v8i1.29989.
Full textAbstract:
Tugu sub-district has a mangrove ecosystem that is better than the other three sub-districts in Semarang City. The improvement of the mangrove ecosystem in Mangunharjo Village became the main of priority for mangrove rehabilitation This study aimed to determine the level of diversity of mangrove species found in the mangrove ecosystem of Mangunharjo Sub-District, Tugu District, Semarang City based on the zonation. The study was conducted in February-March 2018. Sampling using a combination method, that are systematic sampling with vegetation analysis techniques using quadrat sampling technique. There are three data collection stations determined based on the distance from the coastline to the mainland. Data were analyzed using quantitative descriptive statistics. The results showed that the diversity of mangrove species found in Mangunharjo Village had a low to moderate diversity level (0.72-1.32). The mangrove ecosystem in Mangunharjo is actually artificial ecosystem, with the type and number of mangroves dominated by Rhizophora mucronata and Avicennia marina. There are seven mangrove species found in the open zone, four species in the middle zone and four species in the land zone.
Kecamatan Tugu memiliki ekosistem mangrove yang masih baik dibandingkan dengan tiga kecamatan lainnya yang berada di Kota Semarang. Perbaikan ekosistem mangrove di Kelurahan Mangunharjo menjadi prioritas utama rehabilitasi mangrove. Penelitian ini bertujuan untuk menentukan tingkat keanekaragaman spesies mangrove yang terdapat di ekosistem mangrove Kelurahan Mangunharjo Kecamatan Tugu Kota Semarang berdasarkan zonasinya. Penelitian dilakukan pada bulan Februari–Maret 2018. Pengambilan sampel menggunakan metode kombinasi, yaitu antara systematic sampling dengan teknik analisis vegetasi menggunakan quadrat sampling technique. Terdapat tiga stasiun pengambilan data yang ditentukan berdasarkan jarak dari garis pantai hingga daratan. Data dianalisis secara statistik deskriptif kuantitatif. Hasil penelitian menunjukan bahwa keanekaragaman spesies mangrove yang terdapat di Kelurahan Mangunharjo mempunyai tingkat keanekaragaman rendah hingga sedang (0.72-1.32). Hal ini dikarenakan ekosistem mangrove wilayah Mangunharjo merupakan ekosistem buatan, dengan jenis dan jumlah mangrove yang dominasi oleh Rhizophora mucronata dan Avicennia marina. Terdapat tujuh spesies mangrove yang ditemukan pada zona terbuka, empat spesies pada zona tengah dan empat spesies pada zona daratan.
49
Pratiwi, Rianta, and Ernawati Widyastuti. "MANGROVE BRACHYURAN CRABS IN WORI, NORTH SULAWESI, INDONESIA." Marine Research in Indonesia 43, no. 2 (November 30, 2018): 53–61. http://dx.doi.org/10.14203/mri.v43i2.300.
Full textAbstract:
The study for faunal diversity from mangrove sites in Wori were very less work carried out, especially on brachyuran crab taxa. Healthy mangrove forests provide a critical for many species of Crabs in intertidal and estuarine areas are keys to healthy marine ecology. Mangroves are the most suitable feeding, breeding and nursery grounds for crabs and other crustaceans. In this study, the habitat distribution and diversity of crabs in Wori mangrove environment was recorded from October 2015 and August 2016. In view of the significance of the mangrove habitat, in present study we selected three station with different habitat specifications as in Wori Seaward (WSW), Wori Middle zone (WMZ) and Wori Landward (WLW). Total 15 species and 307 individuals of brachyuran crabs were recorded belonging to 10 genera and 6 families. Crabs belonging to family Sesarmidae was most dominant with 7 species. The other major outcome of study was maximum diversity was found at Wori Landward (WLW) site with 13 species, followed by Middle Zone (WMZ) site with 11 species and Wori Seaward (WSW) site with 10 species.
50
Rosyidi, M. Akhyar, and Agil Al Idrus. "Development of Mangrove Revegetation in Increasing the Availability of Food Materials from the Existence of Association Biota in Central Lombok." Jurnal Biologi Tropis 23, no. 1 (January 8, 2023): 1–8. http://dx.doi.org/10.29303/jbt.v23i1.4355.
Full textAbstract:
Mangrove forest is an ecosystem that functions as a habitat for various animals and biota, but mangrove damage has a negative impact on the diversity of associated biota and the availability of food materials. This study aims to determine the development of mangrove revegetation in increasing the availability of food materials from the presence of associated biota in Central Lombok. Primary data collected from quadratic sampling along the line transects were further analyzed to determine mangrove diversity and dispersion indices as well as macrofauna diversity, uniformity, dominance and abundance indices. The results of the analysis of mangroves, the highest diversity index was in Dondon Beach at 1.52, Tanjung Batutiang at 1.49 and Gili Perigi at 1.42, while the highest dispersion index at Gili Perigi at 0.61, Tanjung Batutiang at 0.55 and Dondon Beach at 0.51. Furthermore, the results of macrofauna analysis showed that the highest diversity index was in Tanjung Batutiang at 2.59, Dondon Beach at 2.51 and Gili Perigi at 2.49, the highest uniformity index at Tanjung Batutiang at 0.82, Dondon Beach at 0.80 and Gili Perigi at 0.79, the highest dominance index at Tanjung Batutiang at 0.91, on Gili Perigi and Dondon Beach of 0.89, the highest abundance index on Dondon Beach of 3.05, on Gili Perigi and Dondon Beach of 2.71. The conclusion of this study is that mangrove revegetation has succeeded in increasing the availability of food material in terms of the presence of macrofauna in Central Lombok.