Littérature scientifique sur le sujet « Types of Mangroves »
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Articles de revues sur le sujet "Types of Mangroves"
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Muhtadi, Ahmad, Rusdi Leidonald, Kamto Triwibowo et 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 (21 mars 2020) : 59. http://dx.doi.org/10.20473/jipk.v12i1.17120.
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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.
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Nengsih, Erlinda, Aried Eriadi et Anzharni Fajrina. « Review : Antioxidant Activity Test of Various Types of Mangroves ». International Journal of Pharmaceutical Sciences and Medicine 6, no 8 (30 août 2021) : 32–41. http://dx.doi.org/10.47760/ijpsm.2021.v06i08.003.
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Free radicals are reactive oxygen that have unpaired electrons looking for partners by binding to electron molecules in the vicinity. Free radicals can cause several degenerative diseases such as diabetes, atherosclerosis, Parkinson's disease, Alzheimer's disease. The content of secondary metabolites in mangroves has the potential to prevent various diseases. Several methods commonly used to estimate the presence of antioxidants in plants include DPPH (2,2-diphenyl-1-picrylhydrazyl), FRAP (ferrous reducing antioxidant power), and ABTS (2,2-azinobis-3-ethylbenzothiazole-6-sulfonic acid). The results of recent studies showed that some mangrove plants have antioxidant activity including: Rhyzophora mucronata, Nypa fruticans, Avicennia marina, Sonneratia alba, Acanthus ilicifolius L, Acrostichum aureum dan Scaevola taccada. Mangrove plants that have the highest IC50 value were found in leaves (methanol extract). The antioxidant activity of mangrove plants is caused by the presence of secondary metabolites contained in the extract such as flavonoids, phenolics, saponins, and tannins.
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Nurfadilah, Nurfadilah. « PENGARUH PENAMBAHAN TEPUNG BUAH MANGROV PEDADA (Sonneratia caseolaris) PADA MUTU DODOL KETAN ». Jurnal Pengolahan Pangan 4, no 1 (30 juin 2019) : 26–32. http://dx.doi.org/10.31970/pangan.v4i1.22.
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Mangroves are plants that live on the shores of the coast with various types of mangroves, but the mangroves used in the study are pedada, European communities know him with designation Sonneratia caseolaris . Mangrove ecosystems have benefits economical that is results wood and notwood for example brackish water cultivation, ponds shrimp, tour a and others. Benefits ecological is in the form of protection for the ecosystem mainlandand the ocean, that is could to be anchoring abrasion or erosion wave or wind tight. Mangroves have value economical important because have rightdungan high arbohydrates. Research this aiming for knowing level substitution flour sticky rice and which produces mangrove mangrove flour dodol with organoleptic high quality . This study used a Randomized Block Design (RBD) with 5 treatments. From the results whole test organoleptic above assessed by penelis from level fondness color, aroma, taste, texture, and fondness whole showing that penelis more like level 10% substitution with use 20 grams of mangrove flour and 180 grams of flour sticky rice.
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Asman, Indra, Calvyn F. A. Sondak, Joshian N. W. Schaduw, Deislie R. H. Kumampung, Medy Ompi et Haryani Sambali. « STRUKTUR KOMUNITAS MANGROVE DI DESA LESAH, KECAMATAN TAGULANDANG, KABUPATEN SITARO ». JURNAL PESISIR DAN LAUT TROPIS 8, no 2 (30 mai 2020) : 48. http://dx.doi.org/10.35800/jplt.8.2.2020.28769.
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Mangroves are forests that grow in brackish water and are affected by tides and seawater, and these forests grow specifically in places where there are pavement and accumulation of organic material. The purpose of this research is to identify the types of mangroves and determine the structure of the mangrove community in Lesah Village. This research was conducted from September to October 2019. The method used in this research is the quadrant line transect method. The types of mangroves were identified with identification books. Community structure data taken are density, frequency, dominance and important value index (IVI) and then analyzed with Microsoft Excel program. Based on the results of the research, there are 2 types of mangroves found in the research location, Rhizophora stylosa and Sonneratia alba. The highest density value (0.122 ind / m2), relative density (81.88%), frequency types (1), relative frequency (50%). Closure types (1.83 m2), types of relative closure (50.18%), the highest important value index at the research site was (182.12%). The results of the mangrove ecological index data analysis for the diversity index value (0.51), dominance (0.73). Keywords: Structure Community, Mangrove, Lesah Village. Abstrak Mangrove adalah hutan yang tumbuh di air payau, dan dipengaruhi oleh pasang surut air laut dan hutan ini tumbuh khususnya di tempat-tempat di mana terjadi pelumpuaran dan akumulasi bahan oraganik. Tujuan dari penelitian adalah mengidentifikasi jenis-jenis mangrove dan mengetahui struktur komunitas mangrove di Desa Lesah. Penelitian dilaksanakan dari September-Oktober 2019. Metode yang digunakan adalah metode line transek kuadran. Jenis-jenis mangrove di identifikasi dengan bantuan buku identifikasi. Data struktur komunitas yang di ambil adalah kerepatan, ferkuensi, dominasi dan indeks nilai penting(INP) dan kemudian di analisa dengan bantuan program computer Microsoft Excel. Berdasarkan hasil penelitian terdapat 2 jenis mangrove yang terdiri dari, Rhizophora stylosa dan Sonneratia alba. Nilai kerepatan tertinggi (0.122 ind/m2), kerapatan relatif jenis (81.88%), frekuensi jenis (1), frekuensi relatif jenis (50%). Penutupan jenis (1.83 m2), penutupan relatif jenis (50.18%), indeks nilai penting tertinggi dilokasi penelitian adalah (182.12%). Hasil analisis data indeks ekologi mangrove untuk nilai indeks keanekaragaman (0.51), dominasi(0.73). Kata Kunci: Struktur Komunitas, Mangrove, Desa Lesah.
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Rizaldi, Hazri, Febrianti Lestari et Susiana Susiana. « Tingkat kerusakan ekosistem mangrove di Kawasan Estuari Sei Jang Kecamatan Bukit Bestari Kota Tanjungpinang, Kepulauan Riau, Indonesia ». Akuatikisle : Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil 4, no 2 (17 octobre 2020) : 47. http://dx.doi.org/10.29239/j.akuatikisle.4.2.47-51.
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Research on the level of damage to mangrove ecosystems has been carried out in Estuarine Area Sei Jang. The purpose of this study was to determine the types of mangroves, the density and percentage of mangrove canopy cover, and the level of damage to mangrove ecosystems in the Sei Jang Estuary Area of Tanjung Pinang City. This research was conducted in March 2019. Determination of the research location using a purposive sampling method of 3 stations and using a 10 x 10 m transect for the density and percentage of mangrove canopy cover. The results found four types of mangroves namely Bruguiera gymnorhiza, Rhizophora apiculata, Rhizophora mucronata, and Ceriops tagal with density values (1.033-1.367 individu/ha) and the percentage of mangrove canopy cover with values (61.55-78.41%). For the level of damage at Station I and III are categorized (good) and Station II is categorized (Damaged).
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Richards, Daniel R., et Daniel A. Friess. « Rates and drivers of mangrove deforestation in Southeast Asia, 2000–2012 ». Proceedings of the National Academy of Sciences 113, no 2 (28 décembre 2015) : 344–49. http://dx.doi.org/10.1073/pnas.1510272113.
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The mangrove forests of Southeast Asia are highly biodiverse and provide multiple ecosystem services upon which millions of people depend. Mangroves enhance fisheries and coastal protection, and store among the highest densities of carbon of any ecosystem globally. Mangrove forests have experienced extensive deforestation owing to global demand for commodities, and previous studies have identified the expansion of aquaculture as largely responsible. The proportional conversion of mangroves to different land use types has not been systematically quantified across Southeast Asia, however, particularly in recent years. In this study we apply a combined geographic information system and remote sensing method to quantify the key proximate drivers (i.e., replacement land uses) of mangrove deforestation in Southeast Asia between 2000 and 2012. Mangrove forests were lost at an average rate of 0.18% per year, which is lower than previously published estimates. In total, more than 100,000 ha of mangroves were removed during the study period, with aquaculture accounting for 30% of this total forest change. The rapid expansion of rice agriculture in Myanmar, and the sustained conversion of mangroves to oil palm plantations in Malaysia and Indonesia, are identified as additional increasing and under-recognized threats to mangrove ecosystems. Our study highlights frontiers of mangrove deforestation in the border states of Myanmar, on Borneo, and in Indonesian Papua. To implement policies that conserve mangrove forests across Southeast Asia, it is essential to consider the national and subnational variation in the land uses that follow deforestation.
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Baharlouii, M., D. Mafi Gholami et M. Abbasi. « INVESTIGATING MANGROVE FRAGMENTATION CHANGES USING LANDSCAPE METRICS ». ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4/W18 (18 octobre 2019) : 159–62. http://dx.doi.org/10.5194/isprs-archives-xlii-4-w18-159-2019.
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Abstract. Generally, investigation of long-term mangroves fragmentation changes can be used as an important tool in assessing sensitivity and vulnerability of these ecosystems to the multiple environmental hazards. Therefore, the aim of this study was to reveal the trend of mangroves fragmentation changes in Khamir habitat using satellite imagery and Fragstats software during a 30-year period (1986–2016). To this end, Landsat images of 1986, 1998, and 2016 were used and after computing the normalized difference vegetation index (NDVI) to distinguish mangroves from surrounding water and land areas, images were further processed and classified into two types of land cover (i.e., mangrove and non-mangrove areas) using the maximum likelihood classification method. By determining the extent of mangroves in the Khamir habitat in the years of 1986, 1998 and 2017, the trend of fragmentation changes was quantified using CA, NP, PD and LPI landscape metrics. The results showed that the extent of mangroves in Khamir habitat (CA) decreased in the period post-1998 (1998–2016). The results also showed that, the NP and PD increased in the period of post-1998 and in contrast, the LPI decrease in this period. These results revealed the high degree of vulnerability of mangroves in Khamir habitat to the drought occurrence and are thus threatened by climate change. We hope that the results of this study stimulate further climate change adaptation planning efforts and help decision-makers prioritize and implement conservative measures in the mangrove ecosystems on the northern coasts of the PG and the GO and elsewhere.
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Hamzah, A. Hadian Pratama, Trisno Anggoro et Sri Puryono. « Konsep Co-Management dalam Pendekatan Pengelolaan Lingkungan Mangrove di Desa Lubuk Kertang, Brandan Barat, Sumatera Utara ». J-MAS (Jurnal Manajemen dan Sains) 5, no 1 (15 avril 2020) : 129. http://dx.doi.org/10.33087/jmas.v5i1.160.
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Mangroves are one of the important coastal ecosystems that have various benefits and their uses are carried out by various stakeholders. This study aims to 1) find out and analyze the condition of mangrove resources and community beneficiaries, 2) analyze the roles and functions of each stakeholder, and 3) find out and analyze the form of co-management of mangrove ecosystem management in Lubuk Kertang Village, West Brandan, Langkat Regency. Mangrove vegetation data collection is done using the quadratic transect method; while taking socioeconomic, institutional, and interview data using survey and purposive sampling methods. Data obtained from mangrove vegetation include density, frequency, cover, and mangrove importance index. Stakeholder analysis using a matrix of interests and influences. Research shows there are 5 types of mangroves in Lubuk Kertang Village, namely Avicennia marina, Rhizophora mucronata, Rhizophora apiculata, Rhizophora stylosa and Sonneratia alba. Strategies in the context of expanding mangrove forests are with these types. Stakeholder analysis identified 16 stakeholders who were classified in 4 groups, namely subject, key players, crowd, and by standers. Mangrove management in Lubuk Kertang Village is still in the consultative stage. To improve effectiveness, management is directed at the cooperative level in the co-management spectrum with management strategies.
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Saputro, Danang Adi, Frida Purwanti et Siti Rudiyanti. « KONDISI WISATA MANGROVE DI DESA PASAR BANGGI, KABUPATEN REMBANG Mangrove Tourism Conditions in Pasar Banggi Village, Rembang Regency ». Management of Aquatic Resources Journal (MAQUARES) 8, no 3 (26 juillet 2019) : 221–25. http://dx.doi.org/10.14710/marj.v8i3.24259.
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ABSTRAK Mangrove merupakan tumbuhan yang hidup di daerah pasang surut sebagai ekosistem interface antara daratan dengan lautan. Ekosistem mangrove di desa Pasar Banggi Kabupaten Rembang merupakan perpaduan antara mangrove alami dan hasil rehabilitasi. Tujuan penelitian ini untuk mengetahui kondisi mangrove di Desa Pasar Banggi, Rembang dilihat dari komposisi jenis, kerapatan dan ketebalan mangrove serta menganalisis tingkat kesesuaian wisata mangrove di Desa Pasar Banggi, Rembang. Metode yang digunakan adalah metode survey lapangan yang bersifat eksploratif, dimana teknis pengumpulan data menggunakan sistematik sampling. Data yang diambil meliputi 5 variabel yaitu: jenis, kerapatan mangrove dan asosiasi biota (hasil pengamatan lapangan dan perbandingan dari penelitian terdahulu), ketebalan (citra Google Earth Oktober 2016), pasang surut (data BMKG Oktober 2016). Pengambilan sampel dilakukan pada 3 stasiun, dimana setiap stasiun terdapat 3 titik sampling. Komposisi jenis mangrove di desa Pasar Banggi terdapat 3 jenis mangrove yaitu Rhizopora stylosa, R. mucronata, dan R. Apiculata, dengan kerapatan mangrove tertinggi yaitu 62 ind/100m2 dan ketebalan mangrove tertinggi sepanjang 139 m. Kondisi hutan mangrove desa Pasar Banggi termasuk dalam kategori sesuai (S2) untuk kegiatan wisata berkelanjutan di Kabupaten Rembang. ABSTRACT Mangroves are plants that grow in a tidal areas an interface ecosystems between terrestrial and marine. Mangrove ecosystem in the Pasar Banggi Village, Rembang Regency is a combination results of natural mangrove and rehabilitation. The purpose of this study were to determine condition of mangroves in the Pasar Banggi Village, Rembang, seen from the species composition, density and thickness of mangroves and to analyze the suitability level of mangrove tourism in the Pasar Banggi Village, Rembang. The method used in this study was an exploratory survey method, data collected using systematic sampling techniques. Mangrove tourism data collection was carried out of 5 variables, i.e.: type of mangrove, density of mangroves and associations of biota (from observations and comparisons of previous studies), thickness (Google Earth image October 2016), tides (data BMKG October 2016). Sampling was conducted at 3 stations, each station has 3 sampling points. The composition of mangrove species in Pasar Banggi village consists of 3 types of mangroves, namely Rhizopora stylosa, R. mucronata, and R. Apiculata, with the highest density of mangrove 62 ind / 100m2 and the highest thickness of mangrove along 139 m. The condition of mangrove forest in the Pasar Banggi village was included in the appropriate category (S2) for sustainable tourism activities in the Rembang Regency.
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Irwansyah, Irwansyah, Sugiyarto Sugiyarto et Edwi Mahajoeno. « Struktur Komunitas Ekosistem Mangrove Di Teluk Serewe Pulau Lombok Nusa Tenggara Barat ». Bioeksperimen : Jurnal Penelitian Biologi 5, no 2 (14 novembre 2019) : 126–30. http://dx.doi.org/10.23917/bioeksperimen.v5i2.9242.
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The purpose of this study is to obtain the value of density, frequency, mangrove cover and the mangrove importance index (INP Mangrove) The method used for belt transects. The quadratic transect method measures 10 m x 10 m (tree category), 5 m x 5 m (sapling category) and 2 m x 2 m (seedling category). The results found that the mangrove community in Serewe Bay, Lombok Island, West Nusa Tenggara. Tree strata are dominated by Sonneratia alba species, pole strata are dominated by Sonneratia alba species and the seedling strata are dominated by Pemphis acidula. This shows that the existence of these three types can be found in almost every plot / plot. The Importance Value Index (INP) of mangroves obtained is classified as moderate, this shows that mangroves in Serewe Bay, Lombok Island, West Nusa Tenggara have an important role for the coastal environment.
Thèses sur le sujet "Types of Mangroves"
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Lucena, Leidson Allan Ferreira de. « Estrutura e composição de macroalgas de manguezais hipersalinos do Rio Grande do Norte, Brasil : Diversidade e suas correlações com as variáveis ambientais ». Universidade Estadual da Paraíba, 2012. http://tede.bc.uepb.edu.br/tede/jspui/handle/tede/2467.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
Marine and coastal environments in the world have been facing in the last years a notable environmental degradation process. Macroalgae are the main constituent phytobenthics communities, and they are essentials to the establishment of balance and resilience these ecosystems. The mangroves swamps are coastal environments and may be ecotones, because they are an interposition of continental and marine environments overlap, in scalar patterns. The organisms found have become resistants with the strong transition that occur, such as Bostrychietum macroalgae, where they have formed the most homogeneous communities of mangroves swamps wide world. However, the mangrove swamps typically fall within one of two broad categories of classification: mainland or oceanic island. The mainland mangroves are home biological communities resistants with the strong phisico-chemical variations, and of oceanic island mangroves form on shallow banks or in lagoonal areas well separated from the mainland. In Brazil, mangroves swamps are solely of type mainland, which form the major area these forests in the coastal South America. This ecosystemic pattern is normally associate with fluvial systems – the estuaries, and is combined with many biological disorders, such as salinity and flooding tolerance. The estuarines environments which gives different environments in biological diversity, where can check trait plasticity between population. The estuaries can be classified in three categories: Positives, Low -Inflow and Negatives. Brazilian mangroves there are solely Positives Estuaries where the addition of freshwater river, discharge and thaw exceed the loss by evaporation or freezing, where longitudinal density gradients that drive a net volume output to the ocean. But in semi-arid region, Northeast of Brazil, there are some ecosystemics patterns. The estuarine-mangals show negative characters that are hypersaline and/or reverse, because the flow of freshwater systems are barely making them with a longitudinal density gradient with the opposite sign in relation the positive estuaries and salt concentrations rarely exceed 50. Two rivers (Casqueira and Shark rivers), located in setentrional coast of Rio Grande do Norte state, Macau city, have shown how negatives estuaries (hypersaline and reverse), and are composition species of macroalgae many specific and have a very dynamic environment. A pilot study conducted in April 2010 have been showing one ficoflora visually diverse, that have colonized muddy substrates in great abundance unusually and then resembles those typically found in marine environments typical. To contribute to the scientific knowledge of macroalgae found, this study has as main objective: to do a investigation about composition and structure macroalgae of two hypersaline mangroves, so to observe the effects of hipersalinity and physic-chemical patterns in the dynamics of algal communities. Therefore, this work establishes a comparative relationship between communities and population of seaweeds this environments.
Os ambientes costeiros e marinhos no mundo vem sofrendo um considerável processo de degradação nos últimos anos. As macroalgas, principais constituintes das comunidades fitobentônicas, são fundamentais para o estabelecimento do equilíbrio e resiliência dos ecossistemas nestes ambientes. Em padrões escalares, os manguezais são ambientes costeiros e podem ser considerados ecótonos, por haver uma interposição de ambientes continental e marinho sobrepostos. Os organismos existentes nestes ambientes tornam-se resistentes a forte transição que ocorre, a exemplo as macroalgas do grupo “Bostrychietum”, que formam comunidades homogêneas na maioria dos manguezais do mundo. Os manguezais podem estar distribuídos em duas categorias: os continentais, que abrigam comunidades biológicas resistentes às fortes variações físico - químicas, e as de ilhas oceânicas que formam bancos de águas rasas ou áreas lagunares bem separadas do continente. No Brasil, os manguezais são exclusivamente do tipo continentais, exceção os de Fernando de Noronha, com a maior área costeira na América do Sul. Este padrão ecossistêmico normalmente está associado a sistemas fluviais que são os estuários e é associado a diversos distúrbios biológicos, a exemplo das variações da salinidade; o que confere ambientes distintos em diversidade biológica, conferindo plasticidade fenotípica entre as populações. Os estuários podem ser classificados de três tipos: Positivos, “Low-Inflow” e Negativos. Manguezais brasileiros estão comumente associados a estuários Positivos que são aqueles em que a adição de água doce do rio, chuva, descarga e derretimento do gelo excedem a perda por evaporação ou congelamento, estabelecendo um gradiente de densidade longitudinal em que dirige um volume líquido de saída para o oceano. Porém, na região semi -árida do Nordeste brasileiro, ocorrem algumas particularidades ecossistêmicas. Os ambientes mangue-estuarinos demonstram características hipersalinas, sendo também considerados negativos e/ou inversos, pois, por situarem em regiões áridas e semi- áridas, a vazão de água doce nesses sistemas é praticamente nula o que os tornam com um gradiente de densidade longitudinal com o sinal oposto em relação aos estuários positivos e as concentrações de sal raramente inferiores a 42. Dois manguezais (Rio Casqueira e Tubarão), localizados no litoral setentrional do Estado do Rio Grande do Norte, município de Macau, revelaram-se de caráter negativo e hipersalinos, além de serem bastante peculiares em termos de composição de espécies macroalgais e da própria dinâmica do ambiente. Um estudo-piloto realizado no mês de Abril de 2010 revelou uma ficoflora visualmente diversa, que atipicamente coloniza substratos lamacentos em grande abundância e que se assemelha àquelas tipicamente encontradas em ambientes marinhos típicos. Visando contribuir com o conhecimento científico acerca das macroalgas encontradas, o presente estudo tem como principal objetivo: realizar uma investigação da composição e estrutura da comunidade de macroalgas de dois manguezais hipersalinos no intuito de observar os efeitos da hipersalinidade sob padrões físico-químicos na dinâmica das comunidades algais, estabelecendo uma relação comparativa entre as populações e comunidades de algas marinhas dos ambientes estudados.
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Passos, Tassia Raquel GarcÃs. « Nitrogen and carbon mineralization and dynamics of Fe depending on the type of vegetation and shrimp aquaculture effluent in mangrove soils ». Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=17143.
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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel SuperiorA mineralizaÃÃo do carbono e nitrogÃnio pode ser afetada por diversos fatores. Com esse estudo objetivou - se avaliar a influÃncia das vegetaÃÃes (Rhizophora e Avicennia) no potencial de mineralizaÃÃo do carbono e nitrogÃnio do solo; comparar a mineralizaÃÃo do nitrogÃnio e carbono do solo entre as Ãreas impactadas e nÃo impactada com efluente de carcinicultura e verificar o efeito da variaÃÃo da marà na mineralizaÃÃo do carbono e nitrogÃnio do solo. As amostras de solo foram coletadas em duas Ãreas (Ãrea impactada e nÃo impactada com efluente de carcinicultura) e com predomÃnio de duas vegetaÃÃes (Rhizophora e Avicennia). Em seguida, essas amostras foram incubadas em laboratÃrio por 30 dias para avaliar o potencial de mineralizaÃÃo do carbono e do nitrogÃnio em resposta ao hidroperÃodo (inundado 18h e 6h seco), ao tipo de vegetaÃÃo e ao impacto do solo por efluente de carcinicultura. Verificou - se que no solo da Ãrea impactada menor formaÃÃo da pirita no solo. NÃo houve diferenÃa significativa para os teores de COT, N-total, N-NH4+e N-NO3-para as Ãreas e para as vegetaÃÃes, entretanto foi observada a relaÃÃo positiva entre os teores de COT e de N-total do solo. Foi verificado correlaÃÃo positiva entre os teores de COT e o carbono mineralizado indicando que os procedimentos de inundaÃÃo e sem inundaÃÃo (18 e 6 horas, respectivamente) foram eficientes para promover a mineralizaÃÃo do carbono do solo.
A mineralizaÃÃo do carbono e nitrogÃnio pode ser afetada por diversos fatores. Com esse estudo objetivou-se avaliar a influÃncia das vegetaÃÃes (Rhizophora e Avicennia) no potencial de mineralizaÃÃo do carbono e nitrogÃnio do solo; comparar a mineralizaÃÃo do nitrogÃnio e carbono do solo entre as Ãreas impactadas e nÃo impactada com efluente de carcinicultura e verificar o efeito da variaÃÃo da marà na mineralizaÃÃo do carbono e nitrogÃnio do solo. As amostras de solo foram coletadas em duas Ãreas (Ãrea impactada e nÃo impactada com efluente de carcinicultura) e com predomÃnio de duas vegetaÃÃes (Rhizophora e Avicennia). Em seguida, essas amostras foram incubadas em laboratÃrio por 30 dias para avaliar o potencial de mineralizaÃÃo do carbono e do nitrogÃnio em resposta ao hidroperÃodo (inundado 18h e 6h seco), ao tipo de vegetaÃÃo e ao impacto do solo por efluente de carcinicultura. Verificou-se que no solo da Ãrea impactada menor formaÃÃo da pirita no solo. NÃo houve diferenÃa significativa para os teores de COT, N-total, N-NH4+ e N-NO3- para as Ãreas e para as vegetaÃÃes, entretanto foi observada a relaÃÃo positiva entre os teores de COT e de N-total do solo. Foi verificado correlaÃÃo positiva entre os teores de COT e o carbono mineralizado indicando que os procedimentos de inundaÃÃo e sem inundaÃÃo (18 e 6 horas, respectivamente) foram eficientes para promover a mineralizaÃÃo do carbono do solo
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Edenbrow, Mathew. « Behavioural phenotypes : associated life-history traits and environmental effects on development ». Thesis, University of Exeter, 2011. http://hdl.handle.net/10036/3278.
Texte intégralRésumé :
It is widely documented that non-human organisms express individual differences in behavioural patterns. For example individuals can be categorised as bold or shy and when these individual behavioural differences are consistent through time, they are termed behavioural types (BTs). In recent years research has identified that BTs often correlate across contexts/situations and these correlations are referred to as behavioural syndromes. Behavioural types and syndromes (i.e. personality) have also been implicated as major factors shaping population dynamics and the ability to buffer environmental disturbance. Recent theoretical predictions have proposed that BT variation may be underpinned by life-history strategies; however, these predictions have been little studied to date. Moreover, little research has focused upon environmental influences and the ontogeny of personality. In this thesis I use the Mangrove killifish (Kryptolebias marmoratus), a naturally occurring clonal vertebrate, as a model organism. This species presents a powerful tool providing the ability to replicate within and between isogenic genotypes in a controlled manner. Moreover the natural clonality expressed by this species permits environmental effects upon BT plasticity and BT-life-history interactions to be investigated within a developmental framework. In chapter 2, I present microsatellite genotyping results which show that the founding individuals used to propagate a laboratory population at The University of Exeter represent 20 genetically distinct homozygous genotypes. I additionally address five research questions exploring genotypic, environmental, and developmental effects upon three commonly studied BTs (exploration, boldness and aggression): Firstly; I ask do adult hermaphrodite and secondary males exhibit personality i.e. repeatable BT expression? In chapter 3, I present results showing that both of the sexes express short term personality. Moreover, I show that that genotype is an important factor influencing BTs expressed, regardless of sex, indicating underlying genetic control. Secondly I ask; does genotype level life-history variation underpin personality trait variation during ontogeny? In chapter 4, I show considerable developmental plasticity in behavioural expression between genotypes but not life-history and I find limited behaviour-life-history relationships during development. Thirdly I ask; does the rearing environment influence life-history and behavioural plasticity? In chapter 5, I show that in comparison to a control treatment, the presence of conspecifics during ontogeny results in an average reduction in behavioural scores; however, life-history was unaffected. In addition, I show that development in a low food environment lowered average exploration and growth rate but had no effect on boldness or aggression. Furthermore, fish exposed to a predation risk simulation during ontogeny exhibited similar behavioural scores as the control, yet this treatment generated BTs i.e. personality. My fourth question asks; does the parental rearing environment (utilised in chapter 5) influence behavioural expression in the next generation? In chapter 6, I show that transgeneratonal effects of each parental rearing environment influenced life-history but had a minimal effect upon behaviour in the next generation. Finally I ask; does kin or familiarity influence plasticity in associations and aggression? In chapter 7, I show that genotypes have the ability to discriminate kin and familiars and modulate aggression and association accordingly. These results support the concept that developmental and environmental induced plasticity may be more important than life-history in shaping behaviour. Furthermore, although adults exhibit personality and genotypic effects appear important, genotype interacts with environmental/experiential influences to differentially shape behavioural plasticity during ontogeny. I suggest that theoretical predictions regarding life-history may be insufficient to explain the complexity of animal personality in this species. I discuss these results within developmental and epigenetic frameworks with reference to the ecological significance of these patterns within this species and the animal kingdom as a whole.
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Md, Mizanur Rahman. « Exploring vegetation type, diversity, and carbon stocks in Sundarbans Reserved Forest using high resolution image and inventory data ». Kyoto University, 2019. http://hdl.handle.net/2433/242678.
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Chiang, Chun-An, et 江純安. « The Effects of Mangroves on Pollutant Removal Efficiencies in Salty Water Types of Constructed Wetlands ». Thesis, 2013. http://ndltd.ncl.edu.tw/handle/05128210489409474165.
Texte intégralRésumé :
碩士國立中山大學
海洋環境及工程學系研究所
101
In order to deal with wastewaters from the salty water aquacultural ponds and community households in the adjacent areas, the Dapeng Bay National Scenic Area Administration constructed six salty water types of constructed wetland system, in which a variety of wetland plant species were selected to be planted in different water treatment units to achieve reduction of pollutants through self-purification function of wetland systems. According to the surveying results in Dapeng Bay Salty Water Types of Constructed wetlands, we found that mangroves grew fast. However, we still did not know the relationship between the mangroves growing thrives and water quality. In this study, we explored three mangrove species of Lumnitzera racemosa , Avicennia marina and Rhizophora stylosa in these salty water types constructed wetland wastewater treatment systems. In this study, the laboratory scale constructed wetland model tank was designed to plant mangrove, including unplanted, mangrove*2 and mangrove*6, as a way to explore the situation of wastewater treatment. The experimental results showed that when the mangrove species were planted in still water system, the species of Lumnitzera racemosa was found able to increase the salinity, while the species of Avicennia marina and Rhizophora stylosa were found able to decrease the salinity. We also found that planting density could help to lift the salinity. In additions, ammonia nitrogen concentration in three mangrove species systems were found declined rapidly in the first day until five days later of residence time. Meanwhile, the total nitrogen and total phosphorus removal efficiencies were measured equal to 81.74 ± 1.86% and 85.8 ± 4.54% respectively. Based on total nitrogen removal efficiencies, the mangrove species of Lumnitzera racemosa and Rhizophora stylosa were illustrated the better performance, and the species of Avicennia marina followed. For total phosphorus removal efficiencies, the systems with the species of Rhizophora stylosa was achieved well, and the system with species of Avicennia marina followed, and the system with the species of Lumnitzera racemosa was last. To illustrate the mangrove density the species of Lumnitzera racemosa in the case of high-density planting, we found that exhibited better removal effect than the species of Avicennia marina based on the relationship derived by regressions and Rhizophora stylosa in the case of high-density planting, showed poor removal of total nitrogen and total phosphorus, which was concluded that the mangrove planting density did not affect the removal of nitrogenous nutrients. Comparing the experimental results by planting different species of mangroves for monitoring water quality through both studies by laboratory and the outside salty water types constructed wetland systems in the Dapeng Bay, we found that the removal efficiencies of contaminants and nutrients could be enhanced by planting mangroves. According to the experimental results, in situ data, growth conditions of mangrove species to be explored and selected, we recommended Lumnitzera racemosa and Avicennia marina, learned by the relationships derived by regressions propagated by seed. After both the case and present studies we found that the most suitable density of planting mangroves must be consider by different wetland situations, through judgment and thinning.
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Hsu, Shu-Yu, et 許書瑀. « Analysis of bacterial communities in different treatmentcomponents for salt water type mangrove constructed wetland ». Thesis, 2017. http://ndltd.ncl.edu.tw/handle/mjwjzh.
Texte intégralRésumé :
碩士國立中山大學
海洋環境及工程學系研究所
106
The aim of this study is to exam the seasonal variation of bacterial communities among the coastal salt wetlands. The variations and relations between bacterial communities and water quality were evaluated by identifying bacteria species and the level of chemicals in the water. The water and soil samples were collected at the mangrove forest wetland, and the west inlet, the shallow, the deep area in Datan wetland in Pintung. The bacterial genes in the water and the soil were extracted and purified before they were amplified by polymerase chain reactions. The genes were sepreated by denatureing gradient gel electrophoresis (DGGE), and the smililaritied on the images of DGGE were analyzed by program UPGMA which is in the software, Quantity One.The sequenced sepecies were analyzed with BLAST on NCBI website to find the identified species. The items of water quality included pH, dissolved oxygen, BOD, nitite, nitrate, ammonia, and sulfate. The results of similarities of bacterial communities indicated that the bacterial communities in spring and winter were similar in most of the components of wetlands, except the deep area in Datan wetland. During the winter, the bacterial diversity in mangrove forest wetland was higher than the one in Datan wetland, which means that the mangrove forest weland had better capability of degrading pollutants. Durinig winter, the dominant bacterium included Roseobactor sp., Maribacter sp., Desulfocapsa sp., Desulfatibacillum sp., and Sulfitobacter sp. in water; the ones included Roseobacter sp., Loktanella sp., Sulfitobacter sp., and Alkalimonas collagenimarina in soil in forest wetland. The dominat bacterium were unidentified species in both soil and water in west inlet in Datan. The dominat bacterium were consisted of Roseobacter sp., Sulfitobacter sp. , Roseivivax lentus , Cyanobium sp., and Synechococcus sp. in water; Thioalkalivibrio sp. and Marinobacter sp. in soil in the shallow water area in Datan weland. The dominat baterium contained Vibrio sp.. in the water; Thioalkalivibrio sp. and Marinobacter sp in the soil in the deep water area in Datan wetland. The identified bacterila species are helpful to infer the results of water quility, and the results of water quility can verify the most of the inferences. Marinobacter sp., species which is capable of oxidizing As(III) and Mn(II), existed in the soil in the west inlet area and the shallow water area in Dantan wetland, speculating that the soil might contain As(III) and Mn(II).
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Lai, Phu-Hoang [Verfasser]. « Meiobenthos with special reference to free-living marine nematodes as bioindicators for different mangrove types in Can Gio Biosphere Reserve, Vietnam / Lai Phu Hoang ». 2007. http://d-nb.info/985684518/34.
Texte intégralLivres sur le sujet "Types of Mangroves"
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L'Amour, Louis. Off the Mangrove Coast. New York : Random House Large Print, 2000.
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Vasseur, Christophe. Essais de captage d'huîtres Crassostrea cucullata sur des collecteurs de type métropolitain et expérimentaux fabriqués avec des moyens locaux : Evaluation de la population de crabe de mangrove Scylla serrata : répartition géographique. Cherbourg [France] : Institut national des sciences et techniques de la mer, C.N.A.M., 1993.
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Boland, DJ, MIH Brooker, GM Chippendale, N. Hall, BPM Hyland, RD Johnston, DA Kleinig, MW McDonald et JD Turner. Forest Trees of Australia. CSIRO Publishing, 2006. http://dx.doi.org/10.1071/9780643069701.
Texte intégralRésumé :
Forest Trees of Australia is the essential reference for observing, identifying and obtaining information on the native trees in this country. It describes and illustrates over 300 of our most important indigenous trees, which have been carefully selected for their environmental significance, their importance to the timber industry, or their prominence in our landscape.
This new and thoroughly revised edition has been fully updated throughout and includes treatments of 72 additional species. New maps and photographs show us a wonderfully diverse range of forests, from mangrove swamps, tropical regions and deserts, to alpine areas and majestic stands of temperate forests. A colour section illustrates some of the major forest types of Australia and bark from a diverse range of species.
Forest Trees of Australia is an unsurpassed guide to identification for horticulturists, botanists, foresters, students, farmers, environmentalists and all those who are interested in our native trees.
Chapitres de livres sur le sujet "Types of Mangroves"
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Lucas, Richard, Lola Fatoyinbo, Marc Simard et Lisa-Maria Rebelo. « Remote Sensing of Wetland Types : Mangroves ». Dans The Wetland Book, 1–6. Dordrecht : Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-007-6172-8_305-1.
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Lucas, Richard, Lola Fatoyinbo, Marc Simard et Lisa-Maria Rebelo. « Remote Sensing of Wetland Types : Mangroves ». Dans The Wetland Book, 1641–47. Dordrecht : Springer Netherlands, 2018. http://dx.doi.org/10.1007/978-90-481-9659-3_305.
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Vanhove, S., M. Vincx, D. Van Gansbeke, W. Gijselinck et D. Schram. « The meiobenthos of five mangrove vegetation types in Gazi Bay, Kenya ». Dans The Ecology of Mangrove and Related Ecosystems, 99–108. Dordrecht : Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-017-3288-8_10.
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Amarasinghe, M. D., et S. Balasubramaniam. « Structural properties of two types of mangrove stands on the northwestern coast of Sri Lanka ». Dans The Ecology of Mangrove and Related Ecosystems, 17–27. Dordrecht : Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-017-3288-8_3.
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Tan, T. K., C. L. Teng et E. B. G. Jones. « Substrate type and microbial interactions as factors affecting ascocarp formation by mangrove fungi ». Dans Asia-Pacific Symposium on Mangrove Ecosystems, 127–34. Dordrecht : Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0289-6_16.
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Bacon, Peter R., et Gerard P. Alleng. « The management of Insular Caribbean mangroves in relation to site location and community type ». Dans The Ecology of Mangrove and Related Ecosystems, 235–41. Dordrecht : Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-017-3288-8_26.
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« Mangroves as Fish Habitat ». Dans Mangroves as Fish Habitat, sous la direction de Karen J. Murchie, Sascha Clark Danylchuk, Andy J. Danylchuk et Steven J. Cooke. American Fisheries Society, 2015. http://dx.doi.org/10.47886/9781934874424.ch6.
Texte intégralRésumé :
<em>Abstract</em>.—Three adjacent tidal creek systems (Page, Kemps, and Broad creeks) on Cape Eleuthera, The Bahamas were studied to quantify the variation in fish community structure and habitat characteristics over small (<5 km) spatial scales. Snorkeling transects were used to census the fish community on a summer new moon during slack high tide and involved the simultaneous assessment of each creek and each zone within the creek (i.e., mouth, middle, and upper) replicated over three consecutive days. The simultaneous assessment (involving large teams) was done to enable direct comparison without spatial sampling being confounded by time. Habitat assessments included measurements of water quality parameters, sediment sampling, and vegetation surveys. Despite their close proximity, creeks differed in both fish community structure and habitat characteristics. Broad Creek had the greatest fish species richness (<em>n </em>= 15), followed by Kemps Creek (<em>n </em>= 14) and Page Creek (<em>n </em>= 10). Mangrove habitats had significantly greater fish species diversity in Broad Creek while sea grass habitats resulted in higher species richness in Page Creek, relative to other habitat types. Mangrove and algal plain habitats had the highest fish species diversity in Kemps Creek. Within creeks, fish abundance was dependent on zonation, with the largest number of fish being found in creek mouths compared to upper sections. Water quality parameters (i.e., temperature, dissolved oxygen, and salinity) differed among the creeks, presumably reflecting creek morphology. Out of the 10 different species of vegetation observed, 60% were found in all tidal creeks. Coarse sand was the predominant particle size for all creeks, with variation in the second most abundant particle size between Page Creek and the others. This study reveals the great heterogeneity of tidal creek fish community and habitat characteristics and illustrates that conservation and management strategies along with monitoring programs must recognize the variation that can occur among and within coastal creeks over relatively small spatial scales.
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« Mangroves as Fish Habitat ». Dans Mangroves as Fish Habitat, sous la direction de Karen J. Murchie, Sascha Clark Danylchuk, Andy J. Danylchuk et Steven J. Cooke. American Fisheries Society, 2015. http://dx.doi.org/10.47886/9781934874424.ch6.
Texte intégralRésumé :
<em>Abstract</em>.—Three adjacent tidal creek systems (Page, Kemps, and Broad creeks) on Cape Eleuthera, The Bahamas were studied to quantify the variation in fish community structure and habitat characteristics over small (<5 km) spatial scales. Snorkeling transects were used to census the fish community on a summer new moon during slack high tide and involved the simultaneous assessment of each creek and each zone within the creek (i.e., mouth, middle, and upper) replicated over three consecutive days. The simultaneous assessment (involving large teams) was done to enable direct comparison without spatial sampling being confounded by time. Habitat assessments included measurements of water quality parameters, sediment sampling, and vegetation surveys. Despite their close proximity, creeks differed in both fish community structure and habitat characteristics. Broad Creek had the greatest fish species richness (<em>n </em>= 15), followed by Kemps Creek (<em>n </em>= 14) and Page Creek (<em>n </em>= 10). Mangrove habitats had significantly greater fish species diversity in Broad Creek while sea grass habitats resulted in higher species richness in Page Creek, relative to other habitat types. Mangrove and algal plain habitats had the highest fish species diversity in Kemps Creek. Within creeks, fish abundance was dependent on zonation, with the largest number of fish being found in creek mouths compared to upper sections. Water quality parameters (i.e., temperature, dissolved oxygen, and salinity) differed among the creeks, presumably reflecting creek morphology. Out of the 10 different species of vegetation observed, 60% were found in all tidal creeks. Coarse sand was the predominant particle size for all creeks, with variation in the second most abundant particle size between Page Creek and the others. This study reveals the great heterogeneity of tidal creek fish community and habitat characteristics and illustrates that conservation and management strategies along with monitoring programs must recognize the variation that can occur among and within coastal creeks over relatively small spatial scales.
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Young, Kenneth R., et Paul E. Berry. « Flora and Vegetation ». Dans The Physical Geography of South America. Oxford University Press, 2007. http://dx.doi.org/10.1093/oso/9780195313413.003.0013.
Texte intégralRésumé :
South America’s shape, size, and geographic position, now and in the past, have acted to influence the development of diverse coverings of land surfaces with plants of different sizes, adaptations, and origins. Underlying geologic structures have been exposed to weathering regimes, thereby resulting in a multiplicity of landforms, soil types, and ecological zones. The most notable large-scale features are the Andes, which curl along the western margin of the continent, and the broad swath of the Amazon lowlands in the equatorial zone. However, there are also extensive, more ancient mountain systems in the Brazilian Shield of east-central Brazil and the Guiana Shield in northern South America. The interplay of environmental factors has given rise to a panoply of vegetation types, from coastal mangroves to interior swamplands, savannas, and other grasslands, deserts, shrublands, and a wide array of dry to moist and lowland to highland forest types. The narrower southern half of South America is also complex vegetationally because of the compression of more vegetation types into a smaller area and the diverse climatic regimes associated with subtropical and temperate middle latitudes. Alexander von Humboldt began to outline the major features of the physical geography of South America in his extensive writings that followed his travels in the early nineteenth century (von Humboldt, 1815–1832). For example, he first documented the profound influences of contemporary and historical geologic processes such as earthquakes and volcanoes, how vegetation in mountainous areas changes as elevation influences the distributions of plant species, and the effect of sea surface temperatures on atmospheric circulation and uplift and their impacts on precipitation and air temperatures (Botting, 1973; Faak and Biermann, 1986). His initial insights, in combination with modern observations (Hueck and Seibert, 1972; Cabrera and Willink, 1973; Davis et al., 1997; Lentz, 2000), still serve to frame our synthesis of the major vegetation formations of South America. In this chapter, we relate vegetation formations to spatial gradients of soil moisture and elevation in the context of broad climatic and topographic patterns.
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Omar, Hamdan, Thirupathi Rao Narayanamoorthy, Norsheilla Mohd Johan Chuah, Nur Atikah Abu Bakar et Muhamad Afizzul Misman. « Utilization of Remote Sensing Technology for Carbon Offset Identification in Malaysian Forests ». Dans Remote Sensing [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98952.
Texte intégralRésumé :
Rapid growth of Malaysia’s economy recently is often associated with various environmental disturbances, which have been contributing to depletion of forest resources and thus climate change. The need for more spaces for numerous land developments has made the existing forests suffer from deforestation. This chapter presents an overview and demonstrates how remote sensing data is used to map and quantify changes of tropical forests in Malaysia. The analysis dealt with image processing that produce seamless mosaics of optical satellite data over Malaysia, within 15 years period, with 5-year intervals. The challenges were about the production of cloud-free images over a tropical country that always covered by clouds. These datasets were used to identify eligible areas for carbon offset in land use, land use change and forestry (LULUCF) sector in Malaysia. Altogether 580 scenes of Landsat imagery were processed to complete the observation period and came out with a seamless, wall to wall images over Malaysia from year 2005 to 2020. Forests have been identified from the image classification and then classified into three major types, which are dry-inland forest, peat swamp and mangroves. Post-classification change detection technique was used to determine areas that have been undergoing conversions from forests to other land uses. Forest areas were found to have declined from about 19.3 Mil. ha (in 2005) to 18.2 Mil. ha in year 2020. Causes of deforestation have been identified and the amount of carbon dioxide (CO2) that has been emitted due to the deforestation activity has been determined in this study. The total deforested area between years 2005 and 2020 was at 1,087,030 ha with rate of deforestation of about 72,469 ha yr.−1 (or 0.37% yr.−1). This has contributed to the total CO2 emission of 689.26 Mil. Mg CO2, with an annual rate of 45.95 Mil. Mg CO2 yr.−1. The study found that the use of a series satellite images from optical sensors are the most appropriate sensors to be used for monitoring of deforestation over the Malaysia region, although cloud covers are the major issue for optical imagery datasets.
Actes de conférences sur le sujet "Types of Mangroves"
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Muzaki, Farid Kamal, Aninditha Giffari et Dian Saptarini. « Community structure of fish larvae in mangroves with different root types in Labuhan coastal area, Sepulu – Madura ». Dans PROCEEDING OF INTERNATIONAL BIOLOGY CONFERENCE 2016 : Biodiversity and Biotechnology for Human Welfare. Author(s), 2017. http://dx.doi.org/10.1063/1.4985416.
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Larsen, Julie, et Roger Hubeli. « Rhizolith Island : Prototyping a Resilient Coastal Infrastructure ». Dans 2018 Intersections. ACSA Press, 2018. http://dx.doi.org/10.35483/acsa.aia.inter.18.6.
Texte intégralRésumé :
Rhizolith Island is a proof of concept design project that investigates floating, high performance concrete structures as a new, resilient coastal infrastructure that revitalizes depleting mangrove forests along vulnerable shorelines with continual flooding. The project is a collaboration between the authors, CEMEX Global R&D in Biel, Switzerland, JJSmithGroup Coastal Engineering, governmental agencies of Cartagena, Colombia, and local NGOs. The project uses new high performance and lightweight concrete technology to strengthen ecological performance of coastal infrastructure and reinforces appreciation for the ecologies that surround and protect communities. As a new, protective infrastructural type, the island is a resilient barrier that protects and enables new mangroves to grow and thrive while creating a public edge for visitors to engage with along the shore.
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Kazemi, Amirkhosro, Eduardo E. Castillo, Oscar Curet, Ruben Hortensius et Pothos Stamatios. « Volumetric Three-Componential Velocity Measurements (V3V) of Flow Structure Behind Mangrove-Root Type Models ». Dans ASME 2020 Fluids Engineering Division Summer Meeting collocated with the ASME 2020 Heat Transfer Summer Conference and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fedsm2020-20461.
Texte intégralRésumé :
Abstract Mangrove roots produce complex flow structure interactions with their environment, which affect the nutrient, habitat and aquatic animals. Analysis of the flow structure behind the roots extends to a broad range of mangrove-inspired applications that provides understanding into complex flows encountered in unidirectional riverine flows. In this work, we modeled the mangrove roots with a cluster of rigid circular cylinders to investigate the vortex structure downstream of the models. The vortex organization of the patch of cylinder wakes was studied experimentally by time-resolved volumetric three-componential volumetric velocimetry (V3V) at Reynolds numbers 1014 and 3549. The results show that the vortex structure in the 3-D flow field reveals a regular shedding at Re = 1014, forming von Kármán vortices dominating the 3D motion. The flow structure behind rigid patches is coherent and the streamwise velocity remains unchanged. The regime for a flexible patch at Re = 3549 produces an intricate pattern where the multiple counter-rotating vortexes distorted substantially and forming a chain of rhombus-like vortex cells in the near wake. The information for the 3D flow feature provides useful information to a robust structure for Seawall erosion.
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Yingchun, T., Z. Xianfeng, C. Xiuwan, H. Zhaoqiang et W. Caicong. « Mangrove Type Classification using Airborne Hyperspectral Images at Futian Reservation, Shenzhen, China ». Dans 2006 IEEE International Symposium on Geoscience and Remote Sensing. IEEE, 2006. http://dx.doi.org/10.1109/igarss.2006.885.
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Duya, Novia, Jefri Novriansyah, Rista Noveria et Darmi. « The Type and Distribution of Violin Crab (Uca) at Mangrove Forest of Kahyapu, Enggano Island and The Gulf of Muaro, Labu Nawi, Bengkulu City ». Dans 3rd KOBI Congress, International and National Conferences (KOBICINC 2020). Paris, France : Atlantis Press, 2021. http://dx.doi.org/10.2991/absr.k.210621.028.
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