Relevant bibliographies by topics / Mangroves

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers
Reports

Academic literature on the topic 'Mangroves'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 July 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Mangroves.'

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.

Journal articles on the topic "Mangroves"

Dong, Heng, Yifan Gao, Riqing Chen, and Lifang Wei. "MangroveSeg: Deep-Supervision-Guided Feature Aggregation Network for Mangrove Detection and Segmentation in Satellite Images." Forests 15, no. 1 (January 8, 2024): 127. http://dx.doi.org/10.3390/f15010127.

Full text

Abstract:

Mangrove forests are significant participants in coastal ecological environment systems. For the development of protection strategies, it is crucial to automatically and accurately detect the distribution and area of mangroves using satellite images. Although many deep-learning-based mangrove detection and segmentation algorithms have made notable progress, the complex regional structures and the great similarity between mangroves and the surrounding environment, as well as the diversity of mangroves, render the task still challenging. To cover these issues, we propose a novel deep-supervision-guided feature aggregation network for mangrove detection and segmentation called MangroveSeg, which is based on a U-shaped structure with ResNet, combining an attention mechanism and a multi-scale feature extraction framework. We also consider the detection and segmentation of mangroves as camouflage detection problems for the improvement and enhancement of accuracy. To determine more information from extracted feature maps in a hidden layer, a deep supervision model is introduced in up-sampling to enhance feature representation. The spatial attention mechanism with attention gates is utilized to highlight significant regions and suppress task-independent feature responses. The feature fusion module can obtain multi-scale information by binding each layer to the underlying information and update feature mappings. We validated our framework for mangrove detection and segmentation using a satellite image dataset, which includes 4000 images comprising 256 × 256 pixels; we used 3002 for training and 998 for testing. The satellite images dataset was obtained from the Dongzhaigang National Nature Reserve located in Haikou City, Hainan Province, China. The proposed method achieved a 89.58% overall accuracy, 89.02% precision, and 80.7% mIoU. We also used the trained MangroveSeg model to detect mangroves on satellite images from other regions. We evaluated the statistical square measure of some mangrove areas and found that the evaluation accuracy can reach 96% using MangroveSeg. The proposed MangroveSeg model can automatically and accurately detect the distribution and area of mangroves from satellite images, which provides a method for monitoring the ecological environment.

APA, Harvard, Vancouver, ISO, and other styles

Tanu, Ferdouse Zaman, Ko Hinokidani, Yasuhiro Asakura, Satoshi Takahashi, and Yasuhiro Nakanishi. "An Assessment of Mangrove Ecosystem Condition by Foliar Stable Nitrogen Isotope Ratio Index in Okinawa, Japan." International Journal of Plant & Soil Science 35, no. 22 (December 11, 2023): 893–907. http://dx.doi.org/10.9734/ijpss/2023/v35i224201.

Full text

Abstract:

Despite providing valuable ecosystem services, mangroves are endangered under the recent global natural as well as anthropogenic changes. Conservation of mangroves is now one of the pillars of Sustainable Development Goals (SDG) 2030. An assessment of mangrove is essential before initializing any conservation strategy. This paper aimed to assess the ecosystem conditions of mangroves and the relative changes in ecosystem conditions from the natural background under different scales of anthropogenic interruption in Okinawa Prefecture, Japan. To assess mangrove’s ecosystem condition, foliar stable nitrogen isotope ratio (δ15N) of mangroves is used as ecosystem monitoring indicator. Whereas, a difference index (DI) of mangrove foliar δ15N is established to compare the relative deviation in ecosystem conditions of anthropogenically impacted mangroves from reference mangroves. Results showed that the mean foliar δ15N values of Bruguiera gymnorrhiza, Kandelia obovata, and Rhizophora stylosa on Okinawa Island (Is.) are 5.12 ± 2.32‰, 7.54 ± 2.85‰ and 7.09 ± 3.29‰, respectively, on Iriomote Is., 1.83 ± 1.93‰, 2.01 ± 0.31‰ and 1.04 ± 2.38‰, respectively, and on Ishigaki Is., foliar δ15N values of Bruguiera gymnorrhiza and Rhizophora stylosa are 5.23 ± 3.33‰ and 6.00 ± 3.63‰, respectively. A range of negative to positive values from -0.54 to 3.66 of DI indicates different level of changes in ecosystem conditions of the mangroves compared to the reference sites, which is set at zero. A significant negative correlation between DI values and the forest area ratio of the watersheds has been observed. It indicates that the forest cover is the driver of maintaining pristine condition of an ecosystem. Findings of the study recommended that Todoroki and Manko mangrove watersheds in Okinawa, Japan should be taken into consideration for necessary conservation on priority basis.

APA, Harvard, Vancouver, ISO, and other styles

Duryat, Duryat, Rommy Qurniati, Heryandi Heryandi, Machya Kartika Tsani, Surnayanti Surnayanti, and Dadi Anesa. "Counseling to increase public awareness of mangrove forest conservation." Community Empowerment 7, no. 2 (February 28, 2022): 230–37. http://dx.doi.org/10.31603/ce.5997.

Full text

Abstract:

Margasari village has a mangrove area of approximately 700 ha. As the main actors in mangrove management, the people of Margasari Village need to be equipped with basic knowledge about the role and function of mangroves, mangrove zoning, and types of mangrove vegetation. The purpose of this activity is to increase people's knowledge about mangroves, change people's mindsets towards mangrove conservation, and improve the ability to manage and use mangroves wisely and sustainably. Lectures and discussions as well as demonstrations are used as outreach methods. This activity is able to increase public understanding of the role and function of mangroves, so that it can change the mindset of people who are afraid of the law in maintaining mangroves and they can participate in preserving mangroves. A good understanding of mangrove zoning will change the mindset of the community, which initially considered the most important mangrove plant species to be Rhizophora spp, to all types of mangrove vegetation having an important role in the ecosystem. Increased knowledge about mangrove vegetation types has provided awareness that the Margasari Village area has a very favorable location for various types of mangroves, so that it can be optimized to improve community welfare.

APA, Harvard, Vancouver, ISO, and other styles

Tai, Akira, Akihiro Hashimoto, Takuya Oba, Kazuki Kawai, Kazuaki Otsuki, Hiromitsu Nagasaka, and Tomonori Saita. "Growth of Mangrove Forests and the Influence on Flood Disaster at Amami Oshima Island, Japan." Journal of Disaster Research 10, no. 3 (June 1, 2015): 486–94. http://dx.doi.org/10.20965/jdr.2015.p0486.

Full text

Abstract:

“Mangrove” is the generic name for plants growing on tropical and subtropical tidal flats. The mangrove is used for many things, including disaster protecting land from high waves and tides and tsunamis, cleaning rivers and drainage containing soil and sand, and providing a variety of organisms with living space. Climate change and rising sea levels are threatening the future of the mangrove. Developing effective ways to conserve mangroves is thus needed, but more must be known about how the mangrove’s ecology and how it develops. It has been pointed out, for example, that mangroves increased flooding by the Sumiyo River in Amami Oshima. We studied ways to develop the mangrove at the Sumiyo River mouth in Amami Oshima and its influence in local flooding, finding that the current mangrove forest had little influence on flooding and that sediment deposition accelerating in Sumiyo Bay due to a sea dike could enlarge the mangrove forest in future.

APA, Harvard, Vancouver, ISO, and other styles

Mendrofa, Septinus, Rahmat Kurnia, and Niken T. M. Pratiwi. "LAND CHANGES AND MANAGEMENT STRATEGIES OF MANGROVE IN SAWO DISTRICT, NORTH NIAS REGENCY, NORTH SUMATERA PROVINCE." Jurnal Ilmu dan Teknologi Kelautan Tropis 9, no. 2 (January 2, 2018): 499–506. http://dx.doi.org/10.29244/jitkt.v9i2.19286.

Full text

Abstract:

One of the resources that has potential to utilization is a mangrove ecosystem. The aim of this study was to analyze the changes in the area of mangroves, analyze the causes of destruction of mangroves, and formulate strategies for sustainability management of mangroves in Sawo District. The changes in the area of mangroves was identified from imagery and analyzed by ArcGis 10.2.2. The causes of mangrove destruction was analyzed from the data collected from the stakeholders in Sawo District that related to management of mangroves in district level, regency level, and province. The data was analyzed by Analytical Hierarchy Process (AHP) to formulate the strategies for sustainability management of mangroves. The result of landsat imagery showed that, mangrove area has decreased about 17,405 ha within a decade. Mangrove destruction was caused by human activities, such as logging and conversion of mangrove land into agriculture. The main strategy for sustainability management of mangroves was community’s empowerment, then followed by others alternatives. Keywords: AHP, coastal, destruction, ecosystem, landsat

APA, Harvard, Vancouver, ISO, and other styles

Adi Parman Rudia, La Ode, Izal, Muhamad Azwar Syah, Phradiansyah, and La Ode Abdul Fajar Hasidu. "Mangrove Nursery Training fo Marine and Fisheries Student Group in Buton Tengah Regency." Majalah Pengabdian Indonesia 1, no. 1 (April 2, 2024): 25–32. http://dx.doi.org/10.69616/m.v1i1.6.

Full text

Abstract:

Mangrove degradation that occurs in various regions of Southeast Sulawesi, especially in Mawasangka sub-district, Central Buton Regency, is caused by several factors, one of which is the conversion of mangroves into ponds. Real action is needed in mangrove rehabilitation efforts. Some concrete actions in mangrove rehabilitation efforts include species recognition activities as well as mangrove nurseries, which can later be used as a source of seeds for mangrove planting activities. This activity aims to provide understanding to students of the Marine Science and Fisheries Science Study Program regarding the types of mangroves, seed selection, and how to seed mangroves. The methods used in carrying out this activity were a survey of mangrove locations, introduction of mangrove species, selection of seeds, nurseries, and evaluation of activities. A mangrove location survey was carried out to inspect mangrove areas that were open due to conversion into ponds. Species introduction is carried out directly in the mangrove area around the pond. Seed selection is carried out on mangrove propagules that meet the requirements as a seed source. Mangrove seeding is carried out on previously selected mangrove species. Meanwhile, evaluations are carried out 30 days after planting, to see the level of success of mangrove seedlings in growing. The results obtained were that there were 16 types of mangroves, with 4 types of mangroves used as seed sources, namely R. apiculata, R. mucronata, C. tagal, and B. gymnorrhiza. There are a total of 1200 mangrove seedlings that have successfully grown, with a growth success rate of 100%. Apart from that, the participants' capacity in the aspect of introducing types of mangroves, how to seed several types of mangroves, and how to select good seeds has increased. Meanwhile, the participants had a very good understanding of the function and role of mangroves for the environment and society.

APA, Harvard, Vancouver, ISO, and other styles

Bambang Respati, Bambang Imawan, Agus Kurniawan, and Pratama Bimo Purwanto. "The Effect of Cultivating Rhizopora mucronate sp with Domang Method on Mangrove Survival Rate in Klayas Village." ENVIBILITY: Journal of Environmental and Sustainability Studies 1, no. 2 (October 5, 2023): 95–101. http://dx.doi.org/10.55381/envibility.v1i2.200.

Full text

Abstract:

Mangroves are one of the coastal plants that have various benefits. One of the benefits of mangroves is preventing abrasion. However, in some cases the survival rate for the mangroves is low due to various influencing factors, one of which is water conditions. Therefore, intervention is needed to increase the survival rate of mangroves. One intervention that can be carried out is by implementing Domang (Donat Mangrove) planting method which aims to protect mangrove seedlings from extreme water conditions. This method was implemented in Klayas Village which is in the strait area. This research aims to determine the effectiveness of the implementation of Donat Mangrove in increasing the survival rate of mangroves in Klayas Village. So far, the survival rate for mangrove planting in Klayas Village is only around 12% due to the extreme water conditions. However, Donat Mangrove method effectively increases the survival rate of mangrove planting by up to 31%. This shows that the application of Donat Mangrove planting method is effective in increasing the survival rate of mangroves in Klayas Village.

APA, Harvard, Vancouver, ISO, and other styles

Hanca, Nambi, Dwi Putri, Febbry Nurul, Naomi Betris, Rahmat Mushandi, Cahyadi Setiawan, and Lia Kusumawati. "OPTIMALISASI KEBERADAAN EKOSISTEM MANGGROVE UNTUK MENCEGAH ABRASI PANTAI DI PULAU TIDUNG." Jurnal Borneo Saintek 6, no. 1 (July 27, 2023): 1–6. http://dx.doi.org/10.35334/borneo_saintek.v6i1.4196.

Full text

Abstract:

The existence of mangroves is an ecosystem unit located in coastal areas. Coastal areas that have a lot of existence of mangrove ecosystems, of course these coastal areas will be well maintained and minimize the impact of damage that arises, as well as many marine life that is guaranteed. Mangroves have benefits as a place to live, find food, and breed marine biota. The classification of mangrove trees on Tidung Island can be differentiated based on the presence of elements present in the mangroves, namely the shape of the leaves, the shape of the stems, and the mangrove roots that stick into the coastal surface. Generally, the mangroves on Tidung Island are still around the coast. Efforts to optimize distribution in planting mangrove ecosystems are of course still being attempted in handling the preservation of coastal ecosystems around Tidung Island, both from the government and the surrounding community. The height of the mangroves on Tidung Island can be measured by how long the mangroves have been planted. The taller the mangrove trees, the greater the benefits provided to communities around the coast. In addition, mangroves can also function to prevent abrasion as well as marine biota as a place for carbon absorption (blue carbon) because basically mangroves are an important element in efforts to blue carbon in coastal areas which are useful for the continuation of human life.

APA, Harvard, Vancouver, ISO, and other styles

Jain, Ankrati, Surisetty Arunkumar, Alpana Shukla, Hitesh Solanki, and H. B. Chauhan. "HEALTH ASSESSMENT MODELING OF MANGROVES: A CASE STUDY OF PURNA ESTUARY, GUJARAT, INDIA." International Association of Biologicals and Computational Digest 1, no. 2 (October 5, 2022): 119–27. http://dx.doi.org/10.56588/iabcd.v1i2.55.

Full text

Abstract:

This paper quantifies the present status of Mangrove covers in the estuarine region of Purna River, Gujarat. Mangroves health assessment and change detection is modelled after contemplation of important health indicators such as canopy cover, drainage density, erosion and accretion, reclamation activities, and natural regeneration. The weightage of each parameter is given based on its relative importance in mangrove’s health. The entire study area is overlaid with a uniform grid of 1 × 1 hectare, where each parameter is calculated and mapped using multispectral LISS-IV satellite imageries of different time frames between 2008 and 2018 along with the in-situ field measurements. Our analysis showed that the mangrove area of approximately 0.094 sq.km has been degraded from 2008 to 2018 and about 0.126 sq.km has undergone degradation. Whereas the mangroves present on island patches are showing an improvement especially observed along the creek. The area under the pristine health condition of mangroves has been reduced to 0.336 sq. km. One of the major reasons was the construction of aquaculture ponds, which was increased from 2.937 sq.km in 2014 to 7.659 sq.km in 2018. The secondary factor is the wave activity near the mouth of the estuary, which is causing severe erosion along the coast and thereby affecting the mangrove trees.

APA, Harvard, Vancouver, ISO, and other styles

Kamil, Ernie Amira, Husna Takaijudin, and Ahmad Mustafa Hashim. "Mangroves As Coastal Bio-Shield: A Review of Mangroves Performance in Wave Attenuation." Civil Engineering Journal 7, no. 11 (November 1, 2021): 1964–81. http://dx.doi.org/10.28991/cej-2021-03091772.

Full text

Abstract:

Mangroves have been recognized as soft structures that provide coastline protection. The capability of dampening waves helps minimize destruction from catastrophic events including erosive wave attacks, torrential storms, and tsunamis. Mangroves act as the first line of coastal defense in natural tragedies such as during the Super Typhoon Haiyan 2013 and Indian Ocean Tsunami 2004, whereby the leeward mangrove area encountered less damage than the unprotected area. This has further brought the attention of researchers to study the attenuation performance of these coastal vegetations. Based on an extensive literature review, this paper discusses the attenuation mechanism of mangroves, the factors influencing the dissipation performance, studies on mangrove dissipation via different approaches, the dissipation efficiency, mangrove conservation and rehabilitation efforts in Malaysia and implementation of mangrove as coastal bio-shield in other countries. The study highlights that mangrove parameters (such as species, width, density etc.) and wave parameters (such as wave period and incident wave height) are among the contributing factors in mangroves-induced wave attenuation, with different efficiency rates performed by different mangroves and waves parameters. Towards that end, several improvements are proposed for future research such as to incorporate all influencing dissipation factors with specific analysis for each species of mangroves, to perform validation on the studied mangroves attenuation capacity in different settings and circumstances, as well as to address the extent of protection by the rehabilitated mangroves. A systematic and effective management strategy incorporating ecological, forestry, and coastal engineering knowledge should be considered to ensure a sustainable mangroves ecosystem and promising coastline protection by mangroves. Doi: 10.28991/cej-2021-03091772 Full Text: PDF

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "Mangroves"

Stieglitz, Thomas. "Hydrodynamische Prozesse in tropischen Mangroven Hydrodynamic processes in tropical mangroves /." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=963791532.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Tam, Wai-yi Winnie, and 譚慧怡. "Conservation issues in mangroves: any suitable strategies for Hong Kong mangroves?" Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B31255620.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Thévand, Adeline. "Dynamique des mangroves en contexte amazonien : de la veille mondiale au suivi des phénomènes de colonisation et de régénération, étude par télédétection et analyse in situ." Toulouse 3, 2007. http://www.theses.fr/2007TOU30293.

Full text

Abstract:

Ecotone entre les continents et l’océan, la mangrove couvre l’essentiel du littoral des régions intertropicales. Elle constitue un écosystème unique, façonné par un environnement très contraignant. Environnement à haute valeur scientifique et socio-économique, la mangrove subit cependant de multiples menaces. Le suivi de cet écosystème et la compréhension de sa dynamique constituent maintenant des priorités. Dans ce contexte, notre étude a d’abord porté sur l’amélioration de l’estimations des surfaces de mangrove au niveau mondial et sur le suivi de leur évolution, par l’utilisation de la télédétection. L’importance du proche infrarouge dans l’identification des mangroves a été alors mis en évidence. Nous nous sommes ensuite focalisés sur une région à forte activité hydro-sédimentaire : les mangroves des côtes subissant l’influence du fleuve Amazone. De l’individu au peuplement, du suivi de terrain à l’analyse des données de télédétection, nous avons alors caractérisé la dynamique de ces mangroves au travers de deux de ces phases essentielles. - Le développement d’un peuplement après la colonisation de nouveaux espaces (exemple des bancs de vase en Guyane française) : Le rôle de la microtopographie pour l’implantation des plantules, les phénomènes de croissance et la phénologie des jeunes individus ont été précisés. - La régénération de la mangrove adulte (exemple des chablis au Brésil) : La répartition des plantules à l’intérieur des chablis et l’importance là encore de la microtopographie ont été observées. Les possibilités de cartographie des chablis par télédétection ont été explorées. Des relations étroites entre cycles sédimentologiques et cycles biologiques ont ainsi été mis en évidence. Notre exploitation de données de télédétection variées, de l’optique à basse résolution au laser, participe à une meilleure utilisation de ces techniques pour l’étude et le suivi des écosystèmes de mangrove
Land-Ocean ecotone, the mangrove covers almost all the tropical littoral. It constitutes a unique ecosystem, built by a very constraining environment. Environment with high scientific and socio-economic value, the mangrove undergoes however multiple threats. The monitoring of this ecosystem and the comprehension of it dynamic contitute priorities now. In this context, our study focuses first on the improvement of the mangrove surfaces estimates at world level and on the monitoring of their evolution, by tremote sensing. The importance of the near infra-red for the mangroves identification was then highlighted. We then specially study an area of high hydro-sedimentary dynamic: mangroves under the Amazon river influence. From the individual to the settlement, from ground monitoring to remote sensing data analysis, we then characterized the dynamic of these mangroves through two key-phases: - The settlement growth after colonization of a new environment (example of the mud banks in French uiana): The role of microtopography for the seedlings establishment, the growth phenomena and the phenology of the young individuals were specified. - The regeneration of the adult mangrove (example of forest gap in Brazil): The distribution of the seedlings inside gaps and the importance there still of microtopography were observed. The possibilities of gap cartography by remote sensing were explored. Close connections between sedimentological cycles and biological cycles were thus highlighted. Our use of varied remote sensing data, from optical low resolution to Lidar, takes part in a better use of these technics for the study and the monitoring of the mangrove ecosystems

APA, Harvard, Vancouver, ISO, and other styles

Di, Nitto Diana. "To go with the flow: a field and modelling approach of hydrochorous mangrove propagule dispersal." Doctoral thesis, Universite Libre de Bruxelles, 2010. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210046.

Full text

Abstract:

Mangrove ecosystems thrive in (sub)tropical, intertidal areas where adaptations

like vivipary and the hydrochorous dispersal of propagules become an absolute

necessity. As propagule dispersal and early growth allow for the replenishment of

existing stands and colonization of new habitats, many authors recognize the

importance of these stages in structuring mangrove populations and communities.

However, when it comes to the actual propagule dispersal and recruitment

mechanisms, there is an apparent lacuna in the current understanding of

mangrove ecology. The period between the mature propagule falling from the

parental mangrove tree and the early growth of the established seedling, under

various possible circumstances, remains in the dark. In this study we focus on this

particular period by investigating both the places where these propagules end up

as the pathways their dispersal units follow. And we go one step further.

Mangrove forests are being destroyed worldwide at a threatening pace despite

their tremendous asset to coastal human communities and associated biological

species. The effect of human-induced (cutting and mangrove conversion to

aquaculture ponds) as well as indirectly and/or ‘naturally’ evolving disturbances

(sea level rise) on propagule hydrochory occupies an important place in this study.

Dispersal of water-buoyant propagules of the family Rhizophoraceae and

Acanthaceae (now including the Avicenniaceae) was studied in Gazi Bay (Kenya),

Galle and the Pambala-Chilaw Lagoon Complex (Sri Lanka). The study sites

differ both in tidal regime and vegetation structure, covering an interesting variety

of ecological settings to examine propagule dispersal. Field data and experiments

ranging from micro/ mesotopographical measurements and successive propagule

counts to hydrodynamic and propagule dispersal experiments were collected or

executed in situ.

Two main methodological approaches were employed. Firstly, the question on

mechanisms of propagule recruitment was addressed by statistically investigating

the effect of microtopography, top soil texture and above-ground-root complexes on

the stranding and self-planting of propagules (Chapter 2&3). Afterwards,

suitability maps were created using Geographical Information Systems (GIS) to

assess whether a particular mangrove stand has the ability to succesfully

rejuvenate. Furthermore, the effect of degradation (tree cutting) (Chapter 2&3),

sea level rise (Chapter 2&4) and microtopography-altering burrowing activities of

the mangrove mud lobster Thalassina anomala (Chapter 3), was incoporated in the

GIS-analyses. Secondly, the combined set-up of hydrodynamic modelling and

ecological dispersal modelling was developed to simulate propagule dispersal

pathways influenced by dispersal vectors (tidal flow, fresh water discharge, wind),

trapping agents (retention by vegetation or aerial root complexes) and seed

characteristics (buoyancy, obligated dispersal period) (Chapter 5&6). This type of

approach provided the possibility to explore propagule dispersal within its

ecological context, but was also applied to an implication of shrimp pond area

restoration (Pambala-Chilaw Lagoon Complex, Sri Lanka) (Chapter 5) and to

evaluate changes in propagule dispersal when sea level rises (Gazi Bay, Kenya)

(Chapter 6).

The main findings regarding propagule recruitment indicate that propagules are

not distributed equally or randomly within a mangrove stand, yet species-specific

distribution for anchorage occurs. Characteristics of the environment

(microtopography, top soil texture and above-ground root complex) influence

propagule recruitment in a way that complex root systems (e.g. pencil roots and

prop roots) facilitate the entanglement of dispersal units and a more compact soil

texture (like clay and silt) and a predominant flat topography creates suitable

areas for stranding and self-planting of propagules. This combines effects of

existing vegetation and abiotic factors on mangrove propagule establishment.

Since propagule dispersal is not solely determined by species-specific propagule

characteristics (e.g. buoyancy, longevity, etc.), I emphasize that propagule sorting

by hydrochory has to be viewed within its ecological context. Propagule retention

by vegetation and wind as a dispersal vector, deserve a prominent role in studies

on propagule dispersal. The significance of dense vegetation obstructing long

distance dispersal (LDD in its definition of this work), mainly in inner mangrove

zones, supports our main finding that propagule dispersal is largely a short

distance phenomenon. ‘Largely’ is here understood as quantitatively, not

excluding epic colonization events of rare but important nature.

In accordance with the Tidal Sorting Hypothesis (TSH) of Rabinowitz (1978a),

smaller, oval-shaped propagules were found to disperse over larger distances than

bigger, torpedo-shaped propagules. We can however not fully support the TSH

because (1) these differences are no longer valid when comparing between torpedoshaped

propagules of different sizes and (2) propagule dispersal is not always

directed towards areas more inland, but can be strongly concentrated towards the

edges of lagoons and channels

Anthropogenic pressure on mangrove ecosystems, more specifically clear-felling or

mangrove conversion to aquaculture ponds, imposes limitations on propagule

recruitment due to reduced propagule availability and a decrease in suitable

stranding areas where the architecture of certain root complexes, like prop roots

and pencil roots, function as propagule traps. These types of pressure appear to

have more severe consequences on propagule dispersal than the effect of sea level

rise on mangroves. Mangrove forests, which are not situated in an obviously

vulnerable setting, can be resilient to a relative rise in sea level if a landward shift

of vegetation assemblages and successful early colonization is not obstructed by

human-induced pressures. Also, and this renders mangrove forests vulnerable in

spite of their intrinsic resilience, when the ‘capital’ of forest is severely reduced or

impoverished as happens extensively worldwide, the ‘interest’ on this capital,

understood as propagule availability, delivery and trapping, will not allow them to

efficiently cope with sea level rise, putting sustainability of mangrove ecosystem

services and goods at risk.

In a larger framework of mangrove vegetation dynamics, knowledge on propagule

dispersal will benefit management strategies for the conservation of mangroves

worldwide, besides its fundamental interest to fully fathom the ecology of this

particular marine-terrestrial ecotone formation.
Doctorat en Sciences
info:eu-repo/semantics/nonPublished

APA, Harvard, Vancouver, ISO, and other styles

Li, See-wai, and 李思慧. "Factors affecting the survival and fitness of mangroves: an important issue in mangrove plantation and restorationprogrammes." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B45013111.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Li, See-wai. "Factors affecting the survival and fitness of mangroves : an important issue in mangrove plantation and restoration programmes /." View the Table of Contents & Abstract, 2005. http://sunzi.lib.hku.hk/hkuto/record/B34737194.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Rajkaran, Anusha. "A status assessment of mangrove forests in South Africa and the utilization of mangroves at Mngazana Estuary." Thesis, Nelson Mandela Metropolitan University, 2011. http://hdl.handle.net/10948/1547.

Full text

Abstract:

In South Africa mangrove forests are located in estuaries from Kosi Bay in KwaZulu-Natal (KZN) to Nahoon Estuary in the Eastern Cape. The aims of this study were to determine the present state of mangroves in KwaZulu-Natal, by assessing the current population structure, the changes in cover over time and associated anthropogenic pressures. A second objective of this study was to determine the effect of harvesting on the population structure and sediment characteristics in the Mngazana mangrove forest. To determine if harvesting was sustainable at Mngazana Estuary; the growth and mortality rates and associated growth conditions were measured. Finally by using population modelling sustainable harvesting limits were determined by predicting the change in population structure over time. The study focussed on the KwaZulu-Natal province as a fairly recent study addressed mangrove distribution and status in the Eastern Cape Province. A historical assessment of all mangroves forests in KwaZulu-Natal (KZN) revealed that the potential threats to mangroves in South Africa include; wood harvesting, altered water flow patterns coupled with salinity changes, prolonged closed-mouth conditions and subsequent changes to the intertidal habitat. As a result mangroves were completely lost from eleven estuaries in KZN between 1982 and 1999 and a further two estuaries by 2006. Mangroves only occurred in those estuaries where the mouth was open for more than 56 percent of the time with the exception of St Lucia, where the mouth has been closed for longer but the mangrove communities have persisted because the roots of the trees were not submerged. All mangrove forests in KZN were regenerating in terms of population structure as they had reverse J-shaped population curves as well as high adult: seedling ratios. Kosi Bay and Mhlathuze Estuary were two of the larger forests that showed signs of harvesting (presence of tree or branch stumps), but the greatest threat to smaller estuaries seems to be altered water flow patterns due to freshwater abstraction in the catchments and the change of land use from natural vegetation to sugar-cane plantations. These threats affect the hydrology of estuaries and the sediment characteristics (particle size, redox, pH, salinity, temperature) of the mangrove forests. The environmental conditions under which the mangrove forests currently exist were determined for five species. Lumnitzera racemosa and Ceriops tagal exhibited a narrow range of conditions as these species are only found at Kosi Bay, while Avicennia marina, Bruguiera gymnorrhiza and Rhizophora mucronata were found to exist under a wider range of conditions. The growth rate and response to environmental conditions of the three dominant species were important to determine as these species are impacted by harvesting. Mangrove growth rates were measured at Mngazana Estuary in the Eastern Cape, the third largest mangrove forest in South Africa. Areas of this estuary where mangroves harvesting has occurred, show significant differences in sediment characteristics as well as changes in population structure in harvested compared to non harvested sites. The growth rate (in terms of height) of Avicennia marina individuals increased from seedlings (0.31 cm month-1) to adults (1.2 cm month-1), while the growth of Bruguiera gymnorrhiza stabilised from a height of 150 cm at 0.65 cm month-1. The growth of Rhizophora mucronata peaked at 0.72 cm month-1 (height 151-250 cm) and then decreased to 0.4 cm month-1 for taller individuals. Increases in diameter at breast height (DBH) ranged between 0.7 and 2.3 mm month-1 for all species. Some environmental variables were found to be important drivers of growth and mortality of individuals less then 150 cm. A decrease in sediment pH significantly increased the mortality of Avicennia marina seedlings (0-50 cm) (r = - 0.71, p<0.05) and significantly decreased the growth of Rhizophora mucronata and Bruguiera gymnorrhiza seedlings (r = -0.8, r = 0.52 – p < 0.05 respectively). At Mngazana Estuary, mortality of this species showed a positive correlation with sediment moisture content indicating that this species prefers drier conditions. The density of Rhizophora mucronata was significantly correlated to porewater temperature in Northern KZN as was the growth of adult (>300 cm) Rhizophora trees at Mngazana Estuary. Mortality of Avicennia marina individuals (51-150 cm) was related to tree density indicating intraspecific competition and self thinning. Selective harvesting of particular size classes of Rhizophora mucronata was recorded when comparing length of harvested poles (~301 cm) and the size class distribution of individuals. Taking into account the differences in growth rate for each size class for this species it will take approximately 13 years to attain a height of 390 cm which is the height at which trees are selected for harvesting at this estuary. This is 2.6 times slower than those individuals growing in Kenya. The feasibility of harvesting is dependent on the growth rate of younger size classes to replace harvested trees as well as the rate of natural recruitment feeding into the population. Different harvesting intensity scenarios tested within a matrix model framework showed that limits should be set at 5 percent trees ha-1 year-1 to maintain seedling density at > 5 000 ha-1 for R. mucronata. However harvesting of Bruguiera gymnorrhiza should be stopped due to the low density of this species at Mngazana Estuary. Harvesting of the tallest trees of Avicennia marina can be maintained at levels less than 10 percent ha-1 year-1. Effective management of mangrove forests in South African is important to maintain the current state, function and diversity of these ecosystems. Management recommendations should begin with determining the freshwater requirements of the estuaries to maintain the mouth dynamics and biotic communities and deter the harvesting of (whole) adult trees particularly those species that do not coppice. Further management is needed to ensure that forests are cleared of pollutants (plastic and industrial), and any further developments near the mangroves should be minimized.

APA, Harvard, Vancouver, ISO, and other styles

Suprayogi, Bambang. "The effects of oil spills on mangroves." Thesis, Suprayogi, Bambang (1996) The effects of oil spills on mangroves. Masters by Research thesis, Murdoch University, 1996. https://researchrepository.murdoch.edu.au/id/eprint/51817/.

Full text

Abstract:

Mangrove communities are vulnerable to oil spills due to their location close to harbours, onshore and offshore oil production facilities, oil exploration facilities and tanker routes. Many oil spill accidents have been reported and the literature on these accidents has been examined with particular emphasis on the effects of oil on mangroves and other organisms. Most of the published studies have resulted from research after oil spill accidents occurred. However, there are very few detail studies on oil dose-response (plant symptomatology, growth, physical and chemical action) relationships in plants and sediments. An understanding of the effects of oil on mangroves may assist in predicting the interactions between oil exposure factors, species sensitivity and environmental factors. The study was designed to determine the concentrations, the time dependencies, and the lethal and subtle effects of spilled oils on different ages of mangroves, with particular focus on mangrove seedlings. The effects of volatile hydrocarbons and the interactions of oil with anoxia (lack of oxygen) on plants and sediments were also studied. Moreover, the aims of the experiments were to characterise the toxic fractions by recording chemical action of two oil types on plant leaves and sediments. The results were expected to determine the resistant index of mangroves to oil spills (time and dose) and to clarify the chemical compounds and concentrations which were toxic to mangroves. Kuwait Crude Oil (KCO) and North West Shelf Condensate (NWSC) were chosen for use as common heavy and light grade oils, respectively. Different age levels (seeds, seedlings and saplings) of Avicennia marina, Ceriops tagal, Rhizophora stylosa and Rhizophora mncronata were chosen for experiments due to their differences in morphological features, physiological processes and sizes. The research was divided into two main exposure conditions, laboratory and field conditions. Each species was exposed to different selected doses of oil, ranging from very low (27.5 g m-2) to very high (1100 g m-2), applied to the sediment surface only, or to the sediment surface and shoots. Very low (27.5 g m-2), low (275 g m-2) and medium (1375 g m-2) doses of KCO did not permanently affect the total metabolic processes for plant survival. In certain case, these doses stimulated growth. However, application of the same doses of NWSC produced chronic effects. Exposure to higher doses (2750, 5500 and 11000 g m-2) of both oils significantly increased injury symptoms and decreased plant growth. The interactive effects between oil treatment and duration of treatment were mostly antagonistic at medium high and high doses of oil and became synergistics at very high doses of oil. Application of oil to the sediment and shoots had more acute impacts than application to the sediment surface only, as indicated by a higher symptom index, leaf abscission and mortality, decreased plant growth and reduced biomass. There were variable effects on leaf area and biomass accumulation as responses of any species were affected more by individual plant-size than by oil treatments. The greater tolerance of biomass responses to oil treatments may be because of its slower response to the stress as it follows physiological and biological changes. In certain cases, the effects were more complicated due interactions of response to oil with other environmental stresses. Although the effects of NWSC and KCO on mangroves were variable, A. marina was more sensitive to both types of oil than the three other species. The differences in morphological features and physiological processes may play an important role in sensitivities of different species. Plant stress in Avicennia mangroves was exhibited as primary effects in response to the toxicity of high concentrations of hydrocarbons and other toxic fractions in plant tissues; while, the stress in Rhizophora mangroves was caused by secondary effects such as physical and chemical changes in sediments which affected nutrient deficiencies and metabolic disruptions. Dose-response relationships for individual oil types were different in each species, and were variable under different conditions of experiment. Different species origin, culturing system, sediment characteristics and environmental factors may cause different sensitivities. Furthermore, differences in the capacity of metabolism, and different ages of mangroves resulted in different sensitivities when the same type and doses of oil were applied. The most sensitive age was seed germination, followed by seedlings and saplings, respectively. NWSC as a light oil was more toxic than KCO (a heavy oil) in all species and all age levels of mangroves. The chemical compositions of hydrocarbons in plants was more important than concentration in producing lethal and sublethal impacts than in KCO. The higher increased content of aromatic fractions in NWSC may confer the considerably degree of toxicity to plants. However, different doses of oil caused different responses in each species. While both oils were greatly degraded with time under laboratory and field conditions, the degradation of NWSC was faster than KCO in sediments. The degradation processes may also be influenced by rainfall, tidal flushing, weathering processes (evaporation), biological factors (bacteria, fungi and other micro-organisms) and environmental factors (temperature, oxygen, nutrients, salinity and pressure). In conclusion, different types and doses of oil, and duration of exposures produced different responses in each species of mangroves. Depending on amount of oil applied, the responses developed from growth stimulation to chronic and acute impacts. However, the mechanism of damage appeared to be similar in all species. The responses included foliar injury (leaf chlorosis and necrosis), leaf abscission, stem deformation, reduced number of new leaves, reduced plant growth and biomass accumulation, and mortality.

APA, Harvard, Vancouver, ISO, and other styles

Griffin, Lachlan Francis. "Fish as Mosquito Control Agents in Mangroves." Thesis, Griffith University, 2013. http://hdl.handle.net/10072/367242.

Full text

Abstract:

The saltwater mosquito, Aedes vigilax (Skuse), is a major vector of Ross River virus and Barmah Forest virus across sub-tropical and tropical Australia, and poses a significant human health risk, particularly in densely populated areas such as South East Queensland and Northern New South Wales regions of eastern Australia. The insect uses saltmarsh and mangrove basin forests as oviposition and larval habitats, and various mosquito control methods exist that target larval stages. Fish, acting as predators of larvae, have routinely been used as a component of mosquito control strategies worldwide. If managed appropriately biological control using fish can be effective, but if mismanaged, biological control can have serious environmental consequences. For example, the release of the Mosquitofish (Gambusia holbrooki (Girard)) for mosquito control in Australian waterways has caused significant ecological damage; G. holbrooki is now a major invasive pest. Nonetheless, mosquito control strategies that include the use of native fish populations in the strategy may be more effective for controlling mosquitoes in mangrove basins than those that do not include native fish. However, little is known of fish populations (both exotic and native) within mangrove basins, and the impact these fish do, and could have on mosquito populations. This research examines the relationship between resident fish and saltwater mosquitoes in eastern Australian mangrove basin forests. It focussed specifically on two mangrove basin sites in the South East Queensland/Northern New South Wales region, and evaluates the potential of resident mangrove basin fish as biological control agents in mangrove ecosystems.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Griffith School of Environment
Science, Environment, Engineering and Technology
Full Text

APA, Harvard, Vancouver, ISO, and other styles

Giarrizzo, Tommaso. "Importance of mangroves for fish bases for the conservation and sustainable management of mangrove ecosystems in North Brazil /." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=985227354.

Full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Books on the topic "Mangroves"

Miththapala, Sriyanie. Mangroves. Colombo, Sri Lanka: Ecosystems and Livelihoods Group Asia, IUCN, 2008.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

Blaxland, Beth. Mangroves. Philadelphia, PA: Chelsea House Publishers, 2001.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

Blaxland, Beth. Mangroves. Philadelphia, PA: Chelsea House Publishers, 2001.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

Miththapala, Sriyanie. Mangroves. Colombo, Sri Lanka: Ecosystems and Livelihoods Group Asia, IUCN, 2008.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

IUCN--The World Conservation Union. Ecosystems and Livelihoods Group Asia., ed. Mangroves. Colombo, Sri Lanka: Ecosystems and Livelihoods Group Asia, IUCN, 2008.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

Blaxland, Beth. Mangroves. South Yarra [Vic.]: Macmillan, 2000.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

Duggan, Laurie. Mangroves. St Lucia, Qld: University of Queensland Press, 2003.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

Das, S. The mangroves and mangrove forests of Bangladesh. Chittagong: Govt. of the People's Republic of Bangladesh, Bangladesh Forest Research Institute, 2000.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

Johnstone, R. E. Mangroves and mangrove birds of Western Australia. Perth, W.A: Western Australian Museum, 1990.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

Hearne, R. Lower Volta mangrove study: Economic analysis of mangroves. Accra: Lower Volta Mangrove Project, 1997.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Book chapters on the topic "Mangroves"

Kawata, Yukichika. "Green Infrastructures in Megacity Jakarta: Current Status and Possibilities of Mangroves for Flood Damage Mitigation." In Ecological Research Monographs, 335–51. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-6791-6_21.

Full text

Abstract:

AbstractJakarta is Southeast Asia’s most disaster-vulnerable city and recently has suffered from severe floods almost every year. Flood events have worsened mainly because of ground subsidence, reduction of green spaces, and littering into streams. The mangrove forests remaining in coastal urban areas of northern Jakarta can be utilized for mitigating flood damage. In the first two sections of this chapter, an overview of flood events is presented and the status of mangroves in Jakarta Bay is introduced. Mangroves may serve as hard and soft measures for disaster reduction. Because enlargement of the area of mangroves in urban Jakarta is difficult, in the last section, soft measures, especially the utilization of mangroves as an icon for disaster reduction, are proposed. Activities such as the incorporation of a mangrove design as a logo in documents of disaster prevention education may enhance citizens’ recognition of disaster risks because they will see both logos and mangroves repeatedly in real life.

APA, Harvard, Vancouver, ISO, and other styles

Gevaña, Dixon T., Josephine E. Garcia, Clarissa D. Ruzol, Felisa L. Malabayabas, Liezl B. Grefalda, Elizabeth O’Brien, Elsa P. Santos, and Leni D. Camacho. "Climate Change Resiliency Through Mangrove Conservation: The Case of Alitas Farmers of Infanta, Philippines." In Fostering Transformative Change for Sustainability in the Context of Socio-Ecological Production Landscapes and Seascapes (SEPLS), 195–214. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6761-6_11.

Full text

Abstract:

AbstractTransformation, transition, and paradigm shift are increasingly applied concepts in literature on climate resiliency to describe changes in society and the environment. Here, we considered mangroves to be dynamic socio-ecological systems, subject to increasing anthropogenic pressures that present complex challenges for the design of effective coastal governance. Analysing these systems through a participatory approach, we consulted a community who lives in close relationship with mangroves, the Alitas farmers of Infanta, Quezon Province, Philippines. This community has improved decision-making processes for the development of adaptation strategies to climate change. In turn, a sustainably managed and conserved mangrove forest promotes human well-being and resilience, particularly for those households whose livelihoods are dependent on the resources that mangroves provide. This paper examined the importance of mangrove land management that addresses climate change hazards. We synthesised various perspectives on the importance of mangrove conservation for enhancing climate resiliency by: (1) describing the climate-related hazards that affect local communities and mangroves; (2) describing socio-institutional structures influencing effective mangrove conservation and local resilience; and (3) identifying climate change adaptation strategies that promote local development and mangrove conservation. This paper establishes a collaborative management framework for future risk-resilience management that operates alongside coastal communities within the Philippines and across the global stage.

APA, Harvard, Vancouver, ISO, and other styles

Friis, Guillermo, and Mary E. Killilea. "Mangrove Ecosystems of the United Arab Emirates." In A Natural History of the Emirates, 217–40. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-37397-8_7.

Full text

Abstract:

AbstractGray mangroves (Avicennia marina) represent the only evergreen forests of the United Arab Emirates (UAE), where they occur at the northern edge of the species’ range and are subject to extreme environmental conditions. Mangroves occur both throughout the western and eastern coasts of the seven Emirates, either in natural or restored populations. They act as ecosystem engineers, creating a habitat that is exploited by a wide variety of organisms, including species of conservation concern. As the only mangrove species of the Arabian Gulf, the gray mangroves represent a relevant asset for local communities. They provide numerous ecosystem services of cultural and socioeconomic importance, from their aesthetics and recreational uses in urban spaces to their role as carbon sinks or nursery habitats for species targeted for commercial fishing. Thanks to successful afforestation programs, the UAE mangroves are experiencing a steady recovery after severe cover losses resulting from the intense urban development that followed the 1970s oil boom, and nowadays they represent more than half of the total mangrove cover in the Arabian Gulf. However, national mangrove forests still face considerable threats derived from human activities. Active, long-term policies and management will be needed to ensure the survivorship of these critical ecosystems.

APA, Harvard, Vancouver, ISO, and other styles

Groombridge, Brian. "Mangroves." In Global Biodiversity, 324–27. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2282-5_24.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Finlayson, C. M. "Mangroves." In The Wetland Book, 1–16. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-007-6173-5_258-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Finlayson, C. Max. "Mangroves." In The Wetland Book, 93–108. Dordrecht: Springer Netherlands, 2018. http://dx.doi.org/10.1007/978-94-007-4001-3_258.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Duke, Norman C. "Mangroves." In Encyclopedia of Modern Coral Reefs, 655–63. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-2639-2_108.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Alongi, Daniel M. "Mangroves." In Encyclopedia of Estuaries, 393–404. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-8801-4_3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Rajendran, Narayanasamy, Kandasamy Saravanakumar, and Kandasamy Kathiresan. "Mangroves." In Marine Glycobiology, 393–401. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315371399-29.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Lüttge, Ulrich. "Mangroves." In Physiological Ecology of Tropical Plants, 197–223. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-662-03340-1_5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Mangroves"

El Amrousi, Mohamed, Mohamed Elhakeem, and Evan Paleologos. "Mangrove Parks as Alternative Urbanscapes in Desert Environments: Abu Dhabi as a Case Study." In Human Systems Engineering and Design (IHSED 2021) Future Trends and Applications. AHFE International, 2021. http://dx.doi.org/10.54941/ahfe1001175.

Full text

Abstract:

The Abu Dhabi coastline is currently being connected at the Eastern Mangroves on the main island of Abu Dhabi to newly urbanized islands such as Al Jubail Island via an extensive bridge that will cross Umm Lafina Island and vast mangrove landscapes. This is part of a broader plan to create connections to new urban islands to mainland Abu Dhabi such as Al Reem and Al Maryah islands through a series of bridges, roads, and related infrastructure. The most challenging aspect in Gulf state cities is creating green open spaces and parks due to the scarcity of water and extreme heat. Mangroves offer Abu Dhabi an alternative venue to connect urban expansions to the environment because mangrove landscapes can be developed without the need for fresh water, and have become destinations for expatriate communities to enjoy the view and watersports such as Kayaking. This research studies Mangrove waterfront landscapes in Abu Dhabi and new urban developments created in the Eastern Mangroves and Al-Jubail Island.

APA, Harvard, Vancouver, ISO, and other styles

Calderucio Duque Estrada, Gustavo, Jason Sali, Patrizio Piras, Norbert Jallais, Uchechukwu Amaechi, John Bedford-Fubara, and Paola Maria Pedroni. "Mangrove Restoration and Conservation as a Carbon Offset Option: A Case Study in the Niger Delta Region." In Abu Dhabi International Petroleum Exhibition & Conference. SPE, 2021. http://dx.doi.org/10.2118/207725-ms.

Full text

Abstract:

Abstract Despite their limited global distribution, mangroves have gained attention as a potential carbon offset option due to their high carbon storage capacity and diverse social and environmental co-benefits. Carbon stock in mangroves (global average=2,790tCO2eq/ha) is about four times higher than in terrestrial forests and contributes to almost 10% (37GtCO2eq) of global terrestrial carbon pool. Mangrove carbon sequestration averages 6.9tCO2eq/ha/yr but may reach more than 20tCO2eq/ha/yr. Literature suggests that over 812,000ha of mangrove areas, spread over 106 countries/territories, show potential for restoration. Furthermore, globally, mangroves have been lost at a rate of 1-2%/yr, which may account for an annual emission of about 0.09-0.45 GtCO2eq/yr that can be potentially avoided through conservation actions. Mangroves within the Niger Delta Region (NDR) cover 800,000ha (6% of world extent), and contain an estimated carbon stock of 2.2GtCO2eq. In 2017, Eni's subsidiary Nigerian Agip Oil Company (NAOC) launched a voluntary initiative to restore mangroves to promote social and biodiversity benefits while also contributing to offsetting its GHG emissions. A 30-ha pilot restoration area was identified in Okoroma, Bayelsa, where mangroves had failed to naturally recover from oil spills caused by third party interference in 2014. Site assessments were carried out in 2018 and indicated residual soil contamination (hydrocarbons/metals) and low fertility, a typical characteristic of soils in the NDR. A restoration trial (n=90 seedlings) using nursery-reared seedlings resulted in 100% survivorship and high growth rates, confirming the feasibility of active restoration across the entire site. Although soil contamination was lower than when the spills occurred, we concluded that the combination of residual contamination, low soil fertility and site topography had restricted the natural regeneration process. This in turn risked further soil degradation and ultimately erosion and permanent habitat loss. To prevent this from happening, a long-term restoration program based on the transplantation of fertilized seedlings in partnership with local communities is proposed. In addition to the benefits to the local communities and the environmental restoration, this project is expected to allow for the sequestration of 2,970tCO2eq in 20 years and avoid the emission of an estimated 60,000tCO2eq from soil carbon, numbers that could be scaled up in the future to a much larger area. The results of this case study further confirm the possibility of using mangroves as a Natural Climate Solution to offset GHG emissions from O&G operations.

APA, Harvard, Vancouver, ISO, and other styles

Orellana-Alvear, Boris, Juan Hidalgo, Alfredo Ordoñez, and Esteban Zalamea. "Mangrove infrastructure for the economic development of local communities in Naranjal - Ecuador." In 13th International Conference on Applied Human Factors and Ergonomics (AHFE 2022). AHFE International, 2022. http://dx.doi.org/10.54941/ahfe1002365.

Full text

Abstract:

Mangrove ecosystems are of significant environmental and economic importance. Large populations worldwide depend on mangroves for their resources and food supply. Following mangrove data of 1997, Ecuador had an area of 2,469 km² of mangroves. This area has suffered some reductions due to farming, industrial activities, and urbanization in recent years. At the same time, local communities depend on the collection and commercialization of mangrove products as their primary income source. Infrastructure projected in mangrove areas needs a remarkable treatment with a holistic approach to consider technological, social, environmental, and economic aspects. The project will focus on the community 6 de Julio of the zone of Naranjal-Ecuador. One of the primary income sources of this community is the collection and commercialization of the mangrove crab, which is collected at the nearby mangrove areas authorized by the Ministry of Environment, for which the community needs to abide by the regulations and closure periods to guarantee the sustainability of the activity. The primary research's objective is to study the best infrastructure options to help with the crab collection activity. So, it is safer and cleaner and aims to diversify activities such as touristic or educational that can become an alternative income source during the closure periods and reduce the dependence on the crab collection.

APA, Harvard, Vancouver, ISO, and other styles

Isaifan, Dina Jamal, and Yousra Suleiman. "Quantifying Biomass of Microphytobenthos in sediments of Mangroves in the east coast of Qatar." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2021. http://dx.doi.org/10.29117/quarfe.2021.0061.

Full text

Abstract:

Mangroves, Avicennia marina, are highly productive coastal ecosystems with capacity to store carbon within plants and in sediments. Micropytobenthos (MPB) in the sediments also fix carbon and play a significant role in carbon burial. However, there is paucity of information on the role of MPB in coastal carbon budget. We quantified the biomass of MPB as an important carbon pool in the mangrove of Al Thakhira, located at the east coast of Qatar. Sediments at different tidal levels namely, supratidal, intertidal, and subtidal were collected and analyzed for grain size, chlorophyll (a), total carbon, and inorganic carbon contents. Results indicated that sand was the dominant species (60%), followed by silt (39%) and clay (1%) at all tidal levels. While the supratidal level had significantly higher silty sand content, silt dominated the intertidal levels. Moreover, chlorophyll (a) was significantly influenced by tidal levels with highest levels in the subtidal level sediments, where mangroves grow extensively. Results also demonstrated that as we move towards the intertidal zone, the total carbon content in sediments gets higher. Finally, chlorophyll (a) and TOC% were positively associated (r=0.643) in all tidal zones. As we move towards the mangrove subtidal growth area, the total carbon content in sediments gets higher. This work recommends that mangrove forests in Qatar be protected by special sanctuaries and law-enforcement to maintain this natural and dynamic blue carbon ecosystem.

APA, Harvard, Vancouver, ISO, and other styles

Tengker, Soenandar Milian, Marlina Karundeng, and Jessica Indah Samuri. "Metal Analysis of Pb, Fe, Cd with Activated Carbon Material in Tondano Watershed, East Kombos Area, Manado City." In Unima International Conference on Science and Technology 2022. Switzerland: Trans Tech Publications Ltd, 2023. http://dx.doi.org/10.4028/p-5ghdcj.

Full text

Abstract:

This study aimed to determine the characteristics of activated charcoal from mangroves resulting from pyrolysis and activation with 3M KCl using Fourier Transform Infra-Red (FTIR), X-Ray Diffraction (XRD) and ash content analysis and to determine the ratio of Pb, Fe and Cd metal content in river water before and after filtered with activated charcoal. The results of the FTIR test for charcoal from mangroves resulting from pyrolysis and activation with KCl showed the presence of O-H, C=C, C-H, C-N and C-Cl groups as additional groups that appeared after the activation process. The results of XRD analysis show that the lattice parameter (α) can be calculated, namely in pyrolysis mangrove charcoal = 5.79 and charcoal from pyrolysis and activation mangrove wood = 5.88. The results show that there is a change in the distance between the crystal planes after activation, with the known value of, the results of d-spacing 3 strong peaks are 3.39 , 2.94 and 5.88 . The results of the analysis of the ash content are 15.4% and exceed the maximum percentage that has been determined, because there are still impurities attached to the carbon surface. The results of the analysis using Atomic Absorbtion Spectrophotometry (AAS) showed that there were differences in the levels of Pb, Fe and Cd in river water before and after being filtered with activated charcoal. There was a decrease in Pb levels from points 1,2 and 3 as much as 73%, 49% and 55.23%. Meanwhile, Fe metal decreased from points 1, 2 and 3 as much as 58%, 66% and 81%. And on Cd there was a decrease of 44%, 61% and 92%. From these percentage results, activated charcoal from mangroves can be said to be effective because it can absorb metals in river water. Pb metal in river water in East Kombos Manado City has passed the concentration specified in Government Regulation of the Republic of Indonesia No. 22 of 2021, Class II Water Quality Standards.

APA, Harvard, Vancouver, ISO, and other styles

Sudaryatno, Nanung Agus Fitriyanto, Djarot Heru Santosa, Achmad Munjid, Moh Masrukhi, Garda Kalari Yustisiansyah, and Ernani Uswatun Khasanah. "Mangrove Conservation Application Based on Site Selection Using PlanetScope Imagery in Pedaleman Village, Tanara District, Serang." In 3rd International Conference on Community Engagement and Education for Sustainable Development. AIJR Publisher, 2023. http://dx.doi.org/10.21467/proceedings.151.46.

Full text

Abstract:

Mangrove conservation in Indonesia has progressed from planning, and implementation to monitoring, supported by the efforts of the government and non-governmental groups. Mangrove rehabilitation and conservation is an effort to restore the function of degraded mangrove forests and increase the potential for suitable land to be planted with mangroves. Mangrove rehabilitation efforts in Pedaleman Village, Tanara Sub-district, have created a significant mangrove ecosystem in the surrounding area, including the arrangement and restriction of conservation areas with fishpond business areas. Rehabilitation efforts can be realized by selecting suitable site of mangrove planting locations as part of conservation planning. Site selection by visual interpretation method using remote sensing imagery from Planetscope satellite has provided a synaptic overview of land use in the coastal and estuary area of Pedaleman Village. This site selection results in potential mangrove planting areas and non-potential areas. More than 50% of the coastal area of Pedaleman Village is considered conducive for mangrove seedling planting planning. Of this percentage, there are some land uses of ponds and vacant land, most of which can be converted into part of the mangrove forest area.

APA, Harvard, Vancouver, ISO, and other styles

AlRaisi, A. A., S. Al Hameedi, R. M. AlBuainain, J. Glavan, and C. Rhodes. "Restoration Technology Hand in Hand With Nature-Based Solutions: ADNOC's Drone Led Mangrove Restoration Project." In ADIPEC. SPE, 2023. http://dx.doi.org/10.2118/215963-ms.

Full text

Abstract:

At the cutting edge of the 4th Industrial Revolution (4IR) movement across the world, the utilization of drones for reforestation at a large scale puts the United Arab Emirates (UAE) as a pioneer not only in the Arabian Peninsula, but across the world. With only a handful of countries trying new mechanisms for aerial planting, and none at a large scale in the arid conditions of the Arabian Peninsula, Abu Dhabi National Oil Company (ADNOC) has therefore been advancing science and this methodology. The objective of our project is to present the role of innovative technologies in supporting nature-based solutions through ADNOC's pilot project in utilizing drones for mangrove restoration along Abu Dhabi coast. ADNOC targets the plantation of 10 million mangroves by 2030. Those efforts support UAE's commitment of planting 100 million mangroves by 2030. Drone habitat restoration projects support countries to meet the challenge of the United Nations (UN) Sustainable Development Goals (SDGs), United Nations Framework Convention on Climate Change (UNFCCC) commitments, and UN Convention on Biological Diversity (CBD) related targets amongst other ecological related commitments. This project is aligned align with and advance the below SDGs:

APA, Harvard, Vancouver, ISO, and other styles

"Photosynthetic Rates in Mangroves." In International Conference on Plant, Marine and Environmental Sciences. International Institute of Chemical, Biological & Environmental Engineering, 2015. http://dx.doi.org/10.15242/iicbe.c0115015.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Mathew, Alex, Aby K. Mathai, Gnanappazham Lakshmanan, and Kumar Arun Prasad. "Temporal analysis of mangrove species distribution in the mangroves of Pichavaram and Bhitarkanika." In 2023 IEEE India Geoscience and Remote Sensing Symposium (InGARSS). IEEE, 2023. http://dx.doi.org/10.1109/ingarss59135.2023.10490339.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Larsen, Julie, and Roger Hubeli. "Rhizolith Island: Prototyping a Resilient Coastal Infrastructure." In 2018 Intersections. ACSA Press, 2018. http://dx.doi.org/10.35483/acsa.aia.inter.18.6.

Full text

Abstract:

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.

APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Mangroves"

Bolton, Laura. Aquaculture and Mangroves. Institute of Development Studies, April 2021. http://dx.doi.org/10.19088/k4d.2021.056.

Full text

Abstract:

This report aimed to focus on the impacts of coastal aquaculture on poverty but it was often not distinguished from inland aquaculture in the literature and took extra time to ascertain. Aquaculture reporting was also combined with capture fisheries in some reviews. The initial search aimed to draw on evidence from the past 10 years but key papers emerged that were older and the reviews drew from earlier research. There seemed to be a lack of recent research on the links between poverty and aquaculture. The tension between environmental protection and economic development is present in the literature with different views being presented depending on either the agenda in grey literature or the focus of the publisher. There were data on mangrove loss that did not describe the cause of the loss, data that described human-driven mangrove loss but did not distinguish between different human influences, and a small amount of data that linked aquaculture and mangrove loss directly. Unfortunately, it was not possible to find recent data on aquaculture and mangrove loss to assess the latest trends.

APA, Harvard, Vancouver, ISO, and other styles

Bryant, Mary, Duncan Bryant, Leigh Provost, Nia Hurst, Maya McHugh, Anna Wargula, and Tori Tomiczek. Wave attenuation of coastal mangroves at a near-prototype scale. Engineer Research and Development Center (U.S.), September 2022. http://dx.doi.org/10.21079/11681/45565.

Full text

Abstract:

A physical model study investigating the dissipation of wave energy by a 1:2.1 scale North American red mangrove forest was performed in a large-scale flume. The objectives were to measure the amount of wave attenuation afforded by mangroves, identify key hydrodynamic parameters influencing wave attenuation, and provide methodologies for application. Seventy-two hydrodynamic conditions, comprising irregular and regular waves, were tested. The analysis related the dissipation to three formulations that can provide estimates of wave attenuation for flood risk management projects considering mangroves: damping coefficient β, drag coefficient C𝐷, and Manning’s roughness coefficient 𝑛. The attenuation of the incident wave height through the 15.12 m long, 1:2.1 scale mangrove forest was exponential in form and varied from 13%–77%. Water depth and incident wave height strongly influenced the amount of wave attenuation. Accounting for differences in water depth using the sub-merged volume fraction resulted in a common fit of the damping coefficient as a function of relative wave height and wave steepness. The drag coefficient demonstrated a stronger relationship with the Keulegan–Carpenter number than the Reynolds number. The linear relationship between relative depth and Manning’s 𝑛 was stronger than that between Manning’s 𝑛 and either relative wave height or wave steepness.

APA, Harvard, Vancouver, ISO, and other styles

Lugo, Ariel E. Mangroves of the Pacific Islands: research opportunities. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station, 1990. http://dx.doi.org/10.2737/psw-gtr-118.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Raikow, David, Jacob Gross, Amanda McCutcheon, and Anne Farahi. Trends in water quality and assessment of vegetation community structure in association with declining mangroves: A condition assessment of American Memorial Park. National Park Service, 2023. http://dx.doi.org/10.36967/2301598.

Full text

Abstract:

American Memorial Park (AMME) in Saipan contains a rare mangrove wetland that is known to support several endangered species. Through monitoring water quality and vegetation characteristics of the wetland for >10 years we documented a declining mangrove population, an increase in invasive plant species, and declining surface water salinity. Comprehensive surveys conducted in 2014 and 2019 quantified declines in the plant community observed by park staff. Surface water salinity declined from 2009 to 2018 and no other trend in surface water quality was observed. Over the time period of the present study, AMME experienced shifts in annual rainfall conditions that could be associated with ENSO cycles. Dry conditions beginning in late 2016 and continuing through mid-2018 resulted in some surface water sampling sites completely drying. Several stressors may have contributed to declines in mangroves adapted to saturated soils directly and allowed competing plants to proliferate, including disruption of hydrologic connectivity with marine waters resulting in reduced surface water salinity, reduced rainfall causing dry soil conditions, and physical storm damage to canopies. Recommendations include study of groundwater salinity, maintaining or modifying a culvert subject to filling with sediment or other excavation work to improve saline water flow to the wetland at high tides, the establishment of a new groundwater monitoring well, adding a surface water monitoring station near the culvert, conducting a spatial assessment of the mangrove habitat suitability within the mangrove wetland, and developing or assisting with mangrove interpretive and outreach programs.

APA, Harvard, Vancouver, ISO, and other styles

Tomiczek, Tori, Anna Wargula, Nia Hurst, Duncan Bryant, and Leigh Provost. Engineering With Nature : the role of mangroves in coastal protection. Engineer Research and Development Center (U.S.), November 2021. http://dx.doi.org/10.21079/11681/42420.

Full text

Abstract:

The purpose of this Engineering With Nature technical note (EWN TN) is to review previous studies of mangroves as a nature-based adaptation alternative for coastal protection and flood hazard mitigation.

APA, Harvard, Vancouver, ISO, and other styles

Lewis, Casey. Non-Native Mangroves (Rhizophora mangle) of Moloka'i, Hawai'i: A Socio-Ecological Analysis. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.5958.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Arkema, Katie, Allison Bailey, Roberto Guerrero Compeán, Pelayo Menéndez Fernandez, and Borja Reguero. Modeling Tropical Cyclone Risk While Accounting for Climate Change and Natural Infrastructure in the Caribbean. Inter-American Development Bank, July 2023. http://dx.doi.org/10.18235/0004966.

Full text

Abstract:

This chapter describes tools and a methodology to model wind and flood risks from tropical storms under present and future climate accounting for natural infrastructure. Wind forcing provide a crucial link to hydrodynamic models that can be used in risk assessments to estimate extent of and damages from flooding and erosion. Further, such flood risk models can then include the effects of ecosystems, such as mangroves, to model the effects on risk of conservation and restoration outcomes but also individual nature-based projects to reduce risks. The chapter describes hazard modeling techniques and presents simple applications to (1) assess the effect of climate change in the Caribbean, by estimating wind fields for tropical cyclones for present and future climate scenarios, (2) address the limited observations in hurricane data by using existing tools to derive synthetic storms and readily use them in coastal models, and (3) compare modeling approaches and datasets to provide recommendations for assessing flood attenuation of mangroves. The results and data developed in these applications is available with this chapter to be used in other local applications, or to infer damages from wind or in flood hazard models.

APA, Harvard, Vancouver, ISO, and other styles

Merk, Christine. Summary report on Workshop 1 laypersons’ perceptions of marine CDR, Deliverable 3.1. OceanNETs, March 2021. http://dx.doi.org/10.3289/oceannets_d3.1.

Full text

Abstract:

This deliverable reports about the successful completion of three group discussions on marine carbon dioxide removal (CDR) with laypersons in Germany. The 2-hour group discussions were held online. 5 participants discussed these three topics: (1) the environmental state of the oceans, (2) four selected marine CDR approaches, and (3) responsible research and innovation. The four approaches were ocean fertilization, ocean alkalinization via ocean liming and electrochemical weathering in desalination plants, artificial upwelling, and blue carbon management via kelp forests, mangroves and seagrass meadows.

APA, Harvard, Vancouver, ISO, and other styles

Veland, Siri. Summary report on Workshop 2 laypersons’ perceptions of marine CDR, Deliverable 3.2. OceanNETs, April 2021. http://dx.doi.org/10.3289/oceannets_d3.2.

Full text

Abstract:

This deliverable reports about the successful completion of three group discussions on marine carbon dioxide removal (CDR) with laypersons in Norway. The 2-hour group discussions were held online. In three groups, and a pilot group, between 2 and 7 participants discussed these three topics: (1) the environmental state of the oceans, (2) four selected marine CDR approaches, and (3) responsible research and innovation. The four approaches were ocean fertilization, ocean alkalinization via ocean liming and electrochemical weathering in desalination plants, artificial upwelling, and blue carbon management via kelp forests, mangroves and seagrass meadows.

APA, Harvard, Vancouver, ISO, and other styles

Anderson, Lee G. Valuing the Linkages Between the Shrimp Fishery and Mangroves in Campeche, Mexico: This case will provide an example of market based valuation. Inter-American Development Bank, March 2004. http://dx.doi.org/10.18235/0006676.

Full text

Abstract:

This presentation was commissioned by the Environment Network of the Regional Policy Dialogue for the III Hemispheric Meeting celebrated on March 9th and 10th, 2004. There are very productive shrimp stocks in the surrounding gulf waters. They support a large fishery which produces valuable food for national consumption and export. In 1991 it employed 13% of Campeche's total labor force.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!