Gotowa bibliografia na temat „Mangrove habitats”
Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych
Spis treści
Zobacz listy aktualnych artykułów, książek, rozpraw, streszczeń i innych źródeł naukowych na temat „Mangrove habitats”.
Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.
Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.
Artykuły w czasopismach na temat "Mangrove habitats"
1
Payne, Nicholas Leslie, i Bronwyn May Gillanders. "Assemblages of fish along a mangrove - mudflat gradient in temperate Australia". Marine and Freshwater Research 60, nr 1 (2009): 1. http://dx.doi.org/10.1071/mf08124.
Pełny tekst źródłaStreszczenie:
Mangroves are considered to support rich assemblages of fish and invertebrates. Fishes inhabiting mangrove habitats and at various distances from mangroves across mudflats were sampled to: (1) compare fish assemblages between habitats; and (2) determine the influence of mangrove proximity on fish abundance and diversity in three southern Australian estuaries between November 2005 and January 2006. Based on their distribution, fish species were classified as mangrove residents, mudflat residents, generalists or rare species. The assemblage structure of fish in mangroves differed from assemblages 500 m away; however, neither total abundance nor species richness differed significantly between mangroves and mudflats. Mangrove residents and Aldrichetta forsteri (yellow-eyed mullet) displayed strong associations with mangrove habitats, whereas mudflat residents were associated with mudflat habitats. No other fish groups or individual species occurred in higher abundances in either habitat. Total fish abundance, mangrove residents and A. forsteri were positively correlated with pneumatophore density, indicating that the structural complexity of the mangroves might influence the distributions of certain fish species. The current study demonstrated that mangrove habitats in temperate Australia support no greater abundance or diversity of fish than adjacent mudflat habitats and that mangrove proximity does not influence fish distribution at a habitat scale.
2
Rohmawati, Vivi Dwi, Husain Latuconsina i Hasan Zayadi. "Fish Community in Different Mangrove Habitat in Banyuurip Ujung Pangkah – Gresik Regency". Agrikan: Jurnal Agribisnis Perikanan 14, nr 1 (6.04.2021): 73–79. http://dx.doi.org/10.29239/j.agrikan.14.1.73-79.
Pełny tekst źródłaStreszczenie:
Mangroves are an important habitat for fish communities, as spawning, growing and foraging areas. This study aims to compare the species composition, presence frequency and structure of fish communities in different mangrove habitats. The research was conducted at Banyuurip Mangrove Center, Ujung Pangkah District, Gresik Regency, East Java, during July-August 2020. Determination of purposive sampling locations based on physical differences in mangrove habitats. Systematic sampling method was used to estimate the number of mangrove species using belt transects. Fish sample collection uses basic gill nets that are placed at high tide in each mangrove habitat. The results showed that the total number of individual mangrove vegetation was 505 from 12 species, the number of species and individual mangrove vegetation differed between habitats, and the highest was found in coastal mangrove habitats. The number of fish was found as many as 181 individuals from 11 species, 10 families and 5 orders. The number and composition of species, families and fish orders differ between mangrove habitats, with the highest number in coastal mangrove habitats. Mozambique tilapia (Oreochromis mossambicus) dominate the estuary mangrove habitat and giant trevally (Caranx sexfasciatus) dominate the coastal mangrove habitat. There are variations in the structure of fish communities between mangrove habitats, the dominance index value of the fish community in the estuary mangrove habitat is higher and in the medium category, while the coastal mangrove habitat is in the low category. On the other hand, the diversity index value of the fish community in the coastal mangrove habitat is in the high category and the estuary mangrove habitat is in the low category.
3
Arifianti, Eka Nur, Husain Latuconsina i Hasan Zayadi. "Composition and Density of Gastropode in Mangrove Habitat of Banyuurip, Ujung Pangkah - Gresik". Agrikan: Jurnal Agribisnis Perikanan 14, nr 1 (4.04.2021): 65–72. http://dx.doi.org/10.29239/j.agrikan.14.1.65-72.
Pełny tekst źródłaStreszczenie:
Gastropods are one of the biota that live in association with mangrove habitat. This study aims to compare the species composition and structure of the gastropod community in different mangrove habitats. This research was conducted in Banyuurip Mangrove Center (BMC), Ujung Pangkah-Gresik during July-August 2020. Determination of the observation station purposively based on physical differences in mangrove habitat. Estimation of mangrove and gastrode density by systematic sampling method using belt transects. There were 12 mangrove species with the highest number of species in the coastal mangrove habitat, with the highest species composition and density of Avicennia marina. The highest mangrove density was found in coastal mangrove habitats for all criteria. The number of gastropods found were 2,171 specimens belonging to 15 species, 5 families and 5 orders. The highest number of species, families and orders in coastal mangrove habitat were 1,191 specimens, 11 species from 5 families and 5 orders, the lowest was in estuarine mangrove habitat as many as 980 specimens from 9 species, 2 families and 2 orders. Densities of gastropods differ between mangrove habitats, with the highest density in coastal mangrove habitats and the lowest in estuarine mangrove habitats. The composition and density of the highest gastropods species in the estuary mangrove habitat is Cassidula aurisfelis and in the coastal mangrove habitat is Pirenella cingulata. The importance of conservation and rehabilitation efforts for mangroves that have been degraded to support the gastropods associated in it.
4
Dunbar, Kimberley, Ronald Baker i Marcus Sheaves. "Effects of forest width on fish use of fringing mangroves in a highly urbanised tropical estuary". Marine and Freshwater Research 68, nr 9 (2017): 1764. http://dx.doi.org/10.1071/mf16098.
Pełny tekst źródłaStreszczenie:
The size and shape of a habitat patch can influence patterns of species utilisation. The present study examined how the width of fringing mangrove habitats affects the composition and use patterns of the fish assemblage using mangrove edge habitats on the flooding tide. Underwater cameras surveyed fish approaching mangrove habitats, ranging from a thin fringe 5m wide to forests over 75m wide, in a highly modified tropical estuary. The fish assemblage composition was similar across all mangrove widths, although the temporal patterns of use varied among mangrove widths for some species. The mean maximum number of individuals in the field of view was similar among mangrove widths, but fish were visible for a significantly greater proportion of time in videos from narrow (<20m) than wide (≥20m) mangrove stands (15v. 3% respectively). At least some fish were visible in the field of view in narrow mangrove fringes throughout the first hour of the flood tide, whereas in wide mangroves areas the presence of fish declined over time. The findings suggest that estuarine fish are using mangrove edge habitat regardless of width, making narrow mangroves viable habitats for estuarine fish.
5
Chen, Yu-Chi, Ta-Jen Chu, Ju-Der Wei i Chun-Han Shih. "Effects of mangrove removal on benthic organisms in the Siangshan Wetland in Hsinchu, Taiwan". PeerJ 6 (4.10.2018): e5670. http://dx.doi.org/10.7717/peerj.5670.
Pełny tekst źródłaStreszczenie:
Mangrove degradation is a well-documented trend, but the spread of mangroves within the Siangshan Wetland in Hsinchu, Taiwan, runs contrary to that trend. The spread of mangroves changes the structure and functions of habitats for benthic organisms, causes infilling of estuaries and flooding and creates breeding grounds for small black mosquitoes. A large-scale mangrove-removal project was undertaken by the Hsinchu City Government from October 2015 to March 2016. They also investigated the consequences of mangrove removal on benthic organisms and adjacent habitats from October 2015 to September 2016, and the density, species count, Shannon–Wiener index (H′), and Pielou’s evenness index (J′) of the mangrove and non-mangrove regions were compared. In this study, we used satellite telemetry images to monitor fluctuations in mangrove density from 2006 to 2016. The non-mangrove region exhibited more variations than the mangrove region. After mangrove removal, species returned to their original habitats and noteworthy biological values significantly increased in the mangrove regions. This study presents evidence to argue that mangrove removal benefits benthic organisms. The results indicate that mangrove removal can be an appropriate habitat rehabilitation strategy for benthic organisms. The ecological findings of this study can inform coastal managers or other officials who seek to steward mangrove biomass.
6
Stewart, Heather A., Jennifer L. Wright, Matthew Carrigan, Andrew H. Altieri, David I. Kline i Rafael J. Araújo. "Novel coexisting mangrove-coral habitats: Extensive coral communities located deep within mangrove canopies of Panama, a global classification system and predicted distributions". PLOS ONE 17, nr 6 (15.06.2022): e0269181. http://dx.doi.org/10.1371/journal.pone.0269181.
Pełny tekst źródłaStreszczenie:
Marine ecosystems are structured by coexisting species occurring in adjacent or nested assemblages. Mangroves and corals are typically observed in adjacent assemblages (i.e., mangrove forests and coral reefs) but are increasingly reported in nested mangrove-coral assemblages with corals living within mangrove habitats. Here we define these nested assemblages as “coexisting mangrove-coral” (CMC) habitats and review the scientific literature to date to formalize a baseline understanding of these ecosystems and create a foundation for future studies. We identify 130 species of corals living within mangrove habitats across 12 locations spanning the Caribbean Sea, Red Sea, Indian Ocean, and South Pacific. We then provide the first description, to our knowledge, of a canopy CMC habitat type located in Bocas del Toro, Panama. This canopy CMC habitat is one of the most coral rich CMC habitats reported in the world, with 34 species of corals growing on and/or among submerged red mangrove aerial roots. Based on our literature review and field data, we identify biotic and abiotic characteristics common to CMC systems to create a classification framework of CMC habitat categories: (1) Lagoon, (2) Inlet, (3) Edge, and (4) Canopy. We then use the compiled data to create a GIS model to suggest where additional CMC habitats may occur globally. In a time where many ecosystems are at risk of disappearing, discovery and description of alternative habitats for species of critical concern are of utmost importance for their conservation and management.
7
Calcinai, Barbara, Azzurra Bastari, Daisy M. Makapedua i Carlo Cerrano. "Mangrove sponges from Bangka Island (North Sulawesi, Indonesia) with the description of a new species". Journal of the Marine Biological Association of the United Kingdom 97, nr 6 (23.05.2016): 1417–22. http://dx.doi.org/10.1017/s0025315416000710.
Pełny tekst źródłaStreszczenie:
Mangroves create unique ecological environments, furnishing a habitat opportunity for many species. The majority of published information on mangrove sponges comes from the Caribbean while few data are available from Indo-Pacific mangrove sponges. In general, species diversity of sponges in mangroves is lower than adjacent subtidal habitats in both the Caribbean and Indo-Pacific. The aim of this study is to report the first data about sponge species diversity of two mangrove forests from Bangka Island (North Sulawesi, Indonesia) and to describe a new sponge species associated with the mangroves. The survey found 19 species, belonging to 11 families and 15 genera; the samples were collected on mangrove trunks, on the roots or on the surrounding bottom. The majority of the species are typical of coral reef but two of them have been previously found only in lagoons or in mangrove habitats. These new data enlarge our knowledge about Indonesian sponges diversity and suggest the urgency to consider Indonesian mangroves as an important but underestimated element in coral reef ecological dynamics.
8
P D, Krishnapriya, i Binoy C F. "Abundance and diversity of soil arthropods in a tropical deciduous forest and mangrove forest of Kerala, India". ENTOMON 45, nr 1 (31.03.2020): 69–74. http://dx.doi.org/10.33307/entomon.v45i1.505.
Pełny tekst źródłaStreszczenie:
The abundance and diversity of soil arthropods in the Marottichal tropical deciduous forest and Kodungallur mangrove habitat of Thrissur District were studied. A total of 98 species belonging to 15 orders and 5 classes were obtained from the study area. Of these, 59 species belonging to 13 orders and 3 classes were recorded from forest habitat and 47 species belonging to 8 orders and 4 classes from mangroves. Order Coleoptera was the most abundant in both forest (30.69%) and mangrove (36.5%) habitats. Sorenson’s similarity index showed only 15.09% similarity among species indicating that both the habitats harboured significantly different types of species. It was noted that, as the humidity and moisture decreased, the abundance of species also decreased in both habitats. Temperature was negatively correlated with abundance of species. The diversity in forest habitat (4.03) was higher than mangrove habitat (3.77). Maximum abundance was recorded during monsoon season (June- August) and least during winter season (December- February). The species accumulation curve plotted for the study area indicated that there are more species likely to be discovered in both the habitats.
9
Li, Lifeng, Wenai Liu, Jingwen Ai, Shuangjiao Cai i Jianwen Dong. "Predicting Mangrove Distributions in the Beibu Gulf, Guangxi, China, Using the MaxEnt Model: Determining Tree Species Selection". Forests 14, nr 1 (13.01.2023): 149. http://dx.doi.org/10.3390/f14010149.
Pełny tekst źródłaStreszczenie:
Mangrove restoration is challenging within protected coastal habitats. Predicting the dominant species distributions in mangrove communities is essential for appropriate species selection and spatial planning for restoration. We explored the spatial distributions of six mangrove species, including their related environmental factors, thereby identifying potentially suitable habitats for mangrove protection and restoration. Based on six dominant mangrove species present in the Beibu Gulf, Guangxi, China, we used a linear correlation analysis to screen environmental factors. In addition, we used the maximum entropy model to analyze the spatial distributions of potential mangrove afforestation areas. Based on the spatial superposition analysis, we identified mangrove conservation and restoration hot spots. The findings indicate that topographic and bioclimatic factors affect the distribution of suitable mangrove habitats in the Beibu Gulf, followed by land use type, salinity, and substrate type. We identified 13,816 hm2 of prime mangrove habitat in the Beibu Gulf that is primarily distributed in protected areas. The protection rate for existing mangroves was 42.62%. According to the predicted spatial distributions of the mangrove plants, the findings suggest that mangrove restoration should be based on suitable species and site selection.
10
Zu Ermgassen, Philine SE, Thomas Grove i Ivan Nagelkerken. "Global affiliation of juvenile fishes and invertebrates with mangrove habitats". Bulletin of Marine Science 96, nr 3 (1.07.2020): 403–14. http://dx.doi.org/10.5343/bms.2019.0044.
Pełny tekst źródłaStreszczenie:
Mangroves are critical fish and invertebrate habitats, however, identifying to what degree species are affiliated to mangrove systems remains challenging. Here we outline and apply two quantitative methods and one qualitative method for assessing the degree of mangrove affiliation globally at a species level , based on habitat-specific fish and invertebrate species densities extracted from an exhaustive search of the literature , for mangroves and their associated coastal habitats. We assessed all 121 species for which we had ≥7 mangrove records and, where data allowed, quantified the percent contribution of mangroves to the summed species density across all habitats. We set the threshold for identifying a species as "highly mangrove- affiliated" as ≥70% relative density, and examined its validity by subjecting a subset of species either side of the threshold to a thorough review of evidence for mangrove affiliation in the peer-reviewed literature. We found that 53 species were highly mangrove-affiliated, including 24 fish and three invertebrate species from the Atlantic East Pacific (AEP) and nine fish and 15 invertebrate species from the Indo-West Pacific (IWP; two species had global distributions). Thirty- six of the 53 species are of value to artisanal, subsistence, or commercial fisheries (AEP = 21, IWP = 13, Global = 2). While this list of highly mangrove-affiliated species is far from complete due to data limitations, it represents the first attempt to undertake a global overview of highly mangrove- affiliated species, and a proof of concept for a quantitative and objective method of assessment.
Rozprawy doktorskie na temat "Mangrove habitats"
1
Yerman, Michelle Nerida. "Temperate urban mangrove forests : their ecological linkages with adjacent habitats /". View thesis, 2003. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20060517.092914/index.html.
Pełny tekst źródłaStreszczenie:
Thesis (M. Sc.) (Hons) -- University of Western Sydney, 2003."Submitted in accordance with guidelines for the Degree of Master of Science (Hons), College of Science, Technology and the Environment, University of Western Sydney, Hawkesbury, Richmond NSW, Australia, March 2003." Includes bibliography : leaves 229 - 254, and appendices.
2
Yerman, Michelle N., University of Western Sydney, of Science Technology and Environment College i School of Natural Sciences. "Temperate urban mangrove forests : their ecological linkages with adjacent habitats". THESIS_CSTE_NSC_Yerman_M.xml, 2003. http://handle.uws.edu.au:8081/1959.7/652.
Pełny tekst źródłaStreszczenie:
Estuarine habitats along the temperate south-eastern shores of Australia are generally made up of salt marsh, mangrove forests and seagrass beds. In urban areas these habitats have been progressively fragmented as a result of population increase and industrial expansion. Salt marshes in particular have been vulnerable to urban expansion and reclamation because of their close proximity to densely populated areas, while mangrove forests have been less often reclaimed because of frequent tidal inundation. The effect of reclamation of salt marshes on the biotic assemblages and functioning of mangrove forests with an adjacent salt marsh, park or bund wall was examined at nine separate locations on the Parramatta River, Sydney NSW. A mensurative approach was used to describe the patterns of distribution and abundance of macro fauna at several temporal and spatial scales. The implications for management are that salt marshes are an integral part of estuaries, and smaller patches of salt marsh are just as important as larger patches in maintaining the diversity of faunal assemblages and ecosystem functioning in mangrove forests in urban areasMaster of Science (Hons)
3
Manson, Fiona Jane. "Mangroves and fisheries: are there links between coastal habitats and fisheries production? /". [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18551.pdf.
Pełny tekst źródła
4
Goebel, Patrick C. "Distribution, Abundance and Movement of Fish among Seagrass and Mangrove Habitats in Biscayne Bay". NSUWorks, 2016. http://nsuworks.nova.edu/occ_stuetd/403.
Pełny tekst źródłaStreszczenie:
Inshore tropical and subtropical estuaries harbor a relatively high abundance and diversity of organisms. Specifically within estuaries, mangrove and seagrass habitats provide shelter and food for a plethora of organisms, through some or all their life histories. Given the biological connection between offshore coral reefs and coastal estuaries, there is a critical need to understand the underlying processes that determine distribution and abundance patterns within mangrove-seagrass habitats. The predatory fish assemblage within the mangrove and seagrass beds of Biscayne Bay, Florida (USA), was examined over 24-hr. time periods along a distance and habitat gradient from the mangrove edge and nearshore environment (0–300 m) to farshore (301–700 m) seagrass beds. This thesis also investigated the occurrence, distribution and timing of reef fish movement between offshore coral reef habitat and inshore seagrass beds over 24-hr periods. Results indicate that fish predators differed over both the sampling period and with distance from mangrove edge. The results also demonstrated reef fishes move into Biscayne Bay at dusk and exit at dawn by utilizing Broad Creek Channel as a passageway. This work supports the idea of diel migration of selected reef fishes to inshore seagrass beds and highlights the importance of connective channels between habitats. The results suggest that the degradation or loss of seagrass habitat could differentially impact the life-history stages of reef fish species.
5
Wilton, Kylee Margaret, i res cand@acu edu au. "Coastal Wetland Habitat Dynamics in Selected New South Wales Estuaries". Australian Catholic University. School of Arts and Sciences, 2002. http://dlibrary.acu.edu.au/digitaltheses/public/adt-acuvp29.29082005.
Pełny tekst źródłaStreszczenie:
Intertidal wetland habitats in southeastern Australia have changed significantly during the past sixty years. Mangrove habitats have expanded both seawards and landwards, the latter being at the expense of saltmarsh habitats. This relatively common phenomenon is generally suggested to be an outcome of sea-level rise. Several factors potentially responsible for this change are examined, including changes in mean sealevel during the past 50 to 100 years, changes in climate, population growth, catchment landuse, and estuary type. A protocol for mapping estuarine habitats was developed and implemented, incorporating the application of geographic information systems. Spatial and temporal coastal wetland habitat changes at nine sites along the New South Wales coast are illustrated. These habitat dynamics were shown to not correlate between sites. The results demonstrate that sea-level rise in this region cannot solely account for the extent of change during the past sixty years. With the exception of one site (Careel Bay), there have been no correlations between contemporary mean sea-level rise and mangrove incursion of the saltmarsh habitats at the study sites, or with rainfall patterns, at the scale of observation in this study, which was largely decadal. The only correlations determined during this study have been between population growth and coastal wetland habitat dynamics in some sites. In spite of saltmarsh habitat loss being a regional phenomenon, local factors appear to have a profound bearing on the rates of change. Neither contemporary mean sea-level rise, rainfall patterns, estuary type, catchment landuse, catchment natural cover nor population pressure can account solely for the patterns in the spatial and temporal dynamics of the coastal wetlands of New South Wales. It seems apparent that regional factors create preconditions favourable for mangrove incursion, but that localised conditions have been responsible for the extent of these incursions from site to site. That is, despite higher sea-level and greater rainfall, the extent of change has been determined by the unique characteristics of each site. The results have important implications for current estuary management practices in the state of New South Wales. The lack of spatial and temporal trends in coastal wetland habitat dynamics point to the need for management to be conducted on a localised, rather than regional scale. Additionally, anthropogenic influences must be carefully managed, since the extent of mangrove habitat expansion into saltmarsh areas is unlikely to be a natural occurrence.
6
Santos, Rolando O. "Linkage Between Mangrove Fish Community and Nearshore Benthic Habitats in Biscayne Bay, Florida, USA: A Seascape Approach". NSUWorks, 2010. http://nsuworks.nova.edu/occ_stuetd/214.
Pełny tekst źródłaStreszczenie:
The role of mangroves as essential fish habitat has been a focus of extensive research. However, recent evidence has shown that this role should not be evaluated in isolation from surrounding habitats such as seagrass beds and hard-bottom communities. For example, submerged aquatic vegetation (SAV) communities provide potential sources of food and shelter for fish species that may reside in the mangroves, but may also undergo ontogenetic migrations and daily home-range movements into neighboring habitats. The connectivity between the mangrove fish community and the surrounding seascape may be influenced by the level of patchiness, fragmentation, and spatial heterogeneity of adjacent SAV habitats (i.e., SAV seascape structure). The spatial patterns and heterogeneity of SAV seascape structures are driven by internal and external regulatory mechanisms operating at different spatial and temporal scales. In addition, it is likely that many fish species inhabiting the mangrove zones have different home ranges, and foraging and migratory patterns; therefore, different mangrove fish species may respond to seascape heterogeneity at different scales. There are few studies that have assessed the influence and connectivity of benthic habitats adjacent to mangroves for estuarine fish populations at multiple scales. The present research used an exploratory seascape approach in Biscayne Bay (Florida, USA) to evaluate patterns in the patch composition and configuration of SAV communities, and to examine relationships between seascape structural metrics and the abundance, diversity, and distribution of fishes that utilize the adjacent mangrove shoreline as nursery and/or adult habitat. This seascape approach consisted of: a) the multi-scale characterization of the SAV distribution across the seascape with metrics developed in Landscape Ecology, Geographic Information Systems and Remote Sensing; b) multivariate analyses to identify groups with significantly distinct SAV seascape structures within the most heterogeneous scale, and identify possible mechanisms driving the observed SAV seascape structures; and c) an assessment of the mangrove fish community responses to SAV seascape structures.
By applying a set of multivariate analyses (e.g., ANOSIM, MDS plots, hierarchical clustering), the buffer within 200 m from shore was identified as the scale with the highest structural heterogeneity. At this scale, two major SAV seascape structures (i.e., areas with similar SAV spatial arrangement and composition) were identified: a fragmented SAV seascape (FSS) structure and a continuous SAV seascape (CSS) structure. Areas with CSS were characterized by large, uniform SAV patches. In contrast, areas with FSS were characterized by a higher density of smaller, more complex SAV patches. Furthermore, the areas with CSS and FSS structures clustered in zones of the bay with distinct salinity properties. The areas with CSS structures were mostly located in zones characterized by high and stable salinity. However, the areas with FSS concentrated in zones that are influenced by freshwater discharges from canals and with low and variable salinity.
The responses of fish diversity metrics were not constrained to the scale at which the greatest spatial heterogeneity of SAV seascape structures was observed (i.e., the seascape composition and configuration within 200 m from shore), but was related to SAV seascape characteristics across different scales. The majority of the variability of the fish diversity metrics in the mangrove shoreline was explained by SAV seascape structures within the smaller scales (i.e., 100-400 m from shore), and SAV seascape structures that represented the level of fragmentation and/or the percent of suitable habitat. Different conceptual models were proposed to illustrate and understand the ecological dynamics behind the relationship between the diversity of the mangrove fish community and the structure of the adjacent SAV seascape. In general, the diversity and abundance of fishes is influenced by the type and level of fragmentation of the SAV seascape, which, in turn, influence the proportion of the seascape used for foraging and refuge by fish.
In conclusion, this research quantified how the release of large pulses of freshwater into near-shore habitats of coastal lagoons can influence the seascape structure of SAV communities. Namely, freshwater inputs produce fragmentation in otherwise fairly homogeneous SAV meadows. The outcome of this research highlights the importance of seascape characteristics as indicators of ecosystem-level modifications and alterations affecting the spatial distribution, assemblage, and diversity of marine nearshore habitats in coastal regions heavily influenced by human activities. In addition, the results illustrated the cascading effects and synergistic influences of near-shore habitat spatial assemblages on the composition and diversity of estuarine fish communities. Lastly, and very importantly, the relationships established in this project provide quantitative and qualitative information on patterns of species-habitat associations needed for the improved synergistic management and protection of coastal habitats and fisheries resources.
7
Guest, Michaela A., i n/a. "Movement and Assimilation of Carbon by Estuarine Invertebrates". Griffith University. School of Environmental and Applied Science, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20061024.110617.
Pełny tekst źródłaStreszczenie:
In estuarine and other aquatic systems, it is possible for water to transport locally produced carbon (food) across habitat boundaries, and provide nutrition for animals remote from the carbon source. In estuarine and marine systems, early work examining the movement of carbon from saltmarsh habitats in the USA suggested that carbon may move large distances from inshore to offshore environments. Upon closer examination, however, evidence did not support this paradigm of large-scale carbon movement, referred to as the outwelling hypothesis, in some estuaries. Physical characteristics of estuaries in which large-scale carbon movement did not occur, such as restricted access to the sea, were proposed as a possible explanation, and for these estuaries, movement of carbon among estuarine habitats was considered more likely. A mosaic of saltmarsh and mangrove habitats dominate the subtropical barrier estuary of southern Moreton Bay, Queensland, but there have been no studies that examine the movement of carbon among habitats within this system. Previous studies that examine the movement of carbon have mostly been done in saltmarshes in the northern hemisphere or in tropical mangrove systems. Different vegetation and tidal regimes in temperate marshes of the northern hemisphere preclude generalisations of carbon movement to tropical and subtropical systems. Our understanding of carbon movement in tropical systems may extend to subtropical waters, but the saltmarsh-mangrove mosaic in the subtropics distinguishes them from their tropical counterparts. The mosaic of saltmarsh and mangrove habitats among the barrier islands of southern Moreton Bay thus provide a unique opportunity to examine the small-scale movement of carbon among adjacent habitats in a subtropical system. Stable isotopes of carbon have been used successfully to trace the transfer of carbon from autotrophs to consumers at a range of spatial scales. This method is able to distinguish among carbon sources where autotrophs have different ratios of 13C/12C, and consumers take on the ratio of their food source. The success of stable isotopes in clarifying food web processes, however, depends on isotope ratios changing in predictable ways as elements are processed. As isotope ratios may be influenced by changes in productivity, and differences in nutrient source, they may vary across small and large spatial scales that may confound interpretation of food web processes. In this study I measured small and large-scale spatial variability of three estuarine autotrophs (the saltmarsh grass, Sporobolus virginicus, the seagrass Zostera capricorni and the algal community epiphytic on Z. capricorni) and showed the small-scale spatial variability to be negligible and insufficient to preclude the use of carbon and nitrogen isotopes in food web studies. Large-scale variability was more pronounced and may be useful for spatial correlation of food webs for more mobile species. The small-scale homogeneity and clearly distinguished isotope ratios of the dominant autotrophs in adjacent saltmarsh and mangrove habitats in southeast Queensland are therefore ideally suited to the study of small-scale carbon movement between adjacent habitats. Carbon isotopes of estuarine invertebrates were used to estimate the movement of particulate carbon between adjacent saltmarsh and mangroves at the tens-of-metre scale. Carbon isotope values of two crab species (Parasesarma erythrodactyla and Australoplax tridentata) and two snail species (Salinator solida and Ophicardelus quoyi) in saltmarsh closely match those of the saltmarsh grass, and suggest that the movement and assimilation of carbon occurs at a scale much smaller than has previously been examined. In mangroves, the results of this study indicate that microphytobenthos with some contribution of mangrove carbon is the most likely food source for P. erythrodactyla and A. tridentata, although contribution of carbon from saltmarsh is also possible. Under this latter scenario, carbon movement in mangroves would be considered to occur at a scale larger than that in saltmarsh habitat. A study that examined the movement and assimilation of carbon by crabs and an estuarine slug (Onchidina australis) at a finer resolution (i.e. metres) supported the original findings and indicated that the movement and assimilation of carbon occurs 5 - 8 m either side of the saltmarsh-mangrove interface. At this small-scale, the movement and subsequent foraging of crabs among habitats, the movement of particulate carbon among habitats, or a combination of crab and particulate carbon movement are three alternative models that provide plausible explanations for the pattern in carbon isotope values of crabs. Crab movement among these habitats was measured using an array of pitfall traps perpendicular to the saltmarsh-mangrove interface. To test for carbon movement, samples of detritus were collected at 2 m intervals across this same interface and the carbon isotopes analysed. For the majority of crabs (up to 90% for both species), movement up or down the shore was less than 1 m from the place of initial capture. Thus, crab movement cannot explain the trend in carbon isotope values of crabs. The pattern in detrital isotope values was similar to that of crabs and indicates that the movement of particulate carbon across the saltmarsh-mangrove interface is the most likely explanation for crab isotope ratios. Sources of carbon for estuarine invertebrates can also depend on the size of the saltmarsh patches. Examination of the movement and assimilation of carbon by crabs in saltmarsh patches of different sizes adjacent to mangroves indicates that saltmarshes less than 0.3 ha in area are subsidised by the import of allochthonous carbon, most likely from mangroves. These findings contribute substantially to our understanding of the food web value of estuarine habitats and provide an important link between landscape and food web ecology. They also have important implications for determining the conservation value of estuarine habitats with respect to their functional (food web) value. The scale-dependent sampling used in this thesis also provides important evidence for the fine-scale movement of estuarine carbon that has not previously been examined.
8
Guest, Michaela A. "Movement and Assimilation of Carbon by Estuarine Invertebrates". Thesis, Griffith University, 2004. http://hdl.handle.net/10072/367539.
Pełny tekst źródłaStreszczenie:
In estuarine and other aquatic systems, it is possible for water to transport locally produced carbon (food) across habitat boundaries, and provide nutrition for animals remote from the carbon source. In estuarine and marine systems, early work examining the movement of carbon from saltmarsh habitats in the USA suggested that carbon may move large distances from inshore to offshore environments. Upon closer examination, however, evidence did not support this paradigm of large-scale carbon movement, referred to as the outwelling hypothesis, in some estuaries. Physical characteristics of estuaries in which large-scale carbon movement did not occur, such as restricted access to the sea, were proposed as a possible explanation, and for these estuaries, movement of carbon among estuarine habitats was considered more likely. A mosaic of saltmarsh and mangrove habitats dominate the subtropical barrier estuary of southern Moreton Bay, Queensland, but there have been no studies that examine the movement of carbon among habitats within this system. Previous studies that examine the movement of carbon have mostly been done in saltmarshes in the northern hemisphere or in tropical mangrove systems. Different vegetation and tidal regimes in temperate marshes of the northern hemisphere preclude generalisations of carbon movement to tropical and subtropical systems. Our understanding of carbon movement in tropical systems may extend to subtropical waters, but the saltmarsh-mangrove mosaic in the subtropics distinguishes them from their tropical counterparts. The mosaic of saltmarsh and mangrove habitats among the barrier islands of southern Moreton Bay thus provide a unique opportunity to examine the small-scale movement of carbon among adjacent habitats in a subtropical system. Stable isotopes of carbon have been used successfully to trace the transfer of carbon from autotrophs to consumers at a range of spatial scales. This method is able to distinguish among carbon sources where autotrophs have different ratios of 13C/12C, and consumers take on the ratio of their food source. The success of stable isotopes in clarifying food web processes, however, depends on isotope ratios changing in predictable ways as elements are processed. As isotope ratios may be influenced by changes in productivity, and differences in nutrient source, they may vary across small and large spatial scales that may confound interpretation of food web processes. In this study I measured small and large-scale spatial variability of three estuarine autotrophs (the saltmarsh grass, Sporobolus virginicus, the seagrass Zostera capricorni and the algal community epiphytic on Z. capricorni) and showed the small-scale spatial variability to be negligible and insufficient to preclude the use of carbon and nitrogen isotopes in food web studies. Large-scale variability was more pronounced and may be useful for spatial correlation of food webs for more mobile species. The small-scale homogeneity and clearly distinguished isotope ratios of the dominant autotrophs in adjacent saltmarsh and mangrove habitats in southeast Queensland are therefore ideally suited to the study of small-scale carbon movement between adjacent habitats. Carbon isotopes of estuarine invertebrates were used to estimate the movement of particulate carbon between adjacent saltmarsh and mangroves at the tens-of-metre scale. Carbon isotope values of two crab species (Parasesarma erythrodactyla and Australoplax tridentata) and two snail species (Salinator solida and Ophicardelus quoyi) in saltmarsh closely match those of the saltmarsh grass, and suggest that the movement and assimilation of carbon occurs at a scale much smaller than has previously been examined. In mangroves, the results of this study indicate that microphytobenthos with some contribution of mangrove carbon is the most likely food source for P. erythrodactyla and A. tridentata, although contribution of carbon from saltmarsh is also possible. Under this latter scenario, carbon movement in mangroves would be considered to occur at a scale larger than that in saltmarsh habitat. A study that examined the movement and assimilation of carbon by crabs and an estuarine slug (Onchidina australis) at a finer resolution (i.e. metres) supported the original findings and indicated that the movement and assimilation of carbon occurs 5 - 8 m either side of the saltmarsh-mangrove interface. At this small-scale, the movement and subsequent foraging of crabs among habitats, the movement of particulate carbon among habitats, or a combination of crab and particulate carbon movement are three alternative models that provide plausible explanations for the pattern in carbon isotope values of crabs. Crab movement among these habitats was measured using an array of pitfall traps perpendicular to the saltmarsh-mangrove interface. To test for carbon movement, samples of detritus were collected at 2 m intervals across this same interface and the carbon isotopes analysed. For the majority of crabs (up to 90% for both species), movement up or down the shore was less than 1 m from the place of initial capture. Thus, crab movement cannot explain the trend in carbon isotope values of crabs. The pattern in detrital isotope values was similar to that of crabs and indicates that the movement of particulate carbon across the saltmarsh-mangrove interface is the most likely explanation for crab isotope ratios. Sources of carbon for estuarine invertebrates can also depend on the size of the saltmarsh patches. Examination of the movement and assimilation of carbon by crabs in saltmarsh patches of different sizes adjacent to mangroves indicates that saltmarshes less than 0.3 ha in area are subsidised by the import of allochthonous carbon, most likely from mangroves. These findings contribute substantially to our understanding of the food web value of estuarine habitats and provide an important link between landscape and food web ecology. They also have important implications for determining the conservation value of estuarine habitats with respect to their functional (food web) value. The scale-dependent sampling used in this thesis also provides important evidence for the fine-scale movement of estuarine carbon that has not previously been examined.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environmental and Applied Science
Full Text
9
Paillon, Christelle. "Etude de la connectivité entre les communautés de poissons de différents habitats du lagon de Nouvelle-Calédonie par microchimie des otolithes et de l'environnement". Thesis, Nouvelle Calédonie, 2014. http://www.theses.fr/2014NCAL0058/document.
Pełny tekst źródłaStreszczenie:
La connectivité écologique se mesure via l'estimation des mouvements réalisés par les organismes au cours de leurs vie. Parmi les outils existants, seule la microchimie des otolithes est capable de reconstruire les mouvements des poissons au cours de leur vie entière, notamment lors des migrations ontogénétiques. Son utilisation au sein des milieux oligotrophes et chimiquement peu contrastés tels que les récifs coralliens reste cependant marginale. C'est dans ce contexte que s'inscrit ce travail sur la microchimie des otolithes des poissons des récifs coralliens et mangroves de Nouvelle-Calédonie. Il se divise en deux parties. La première, méthodologique, est axée sur l'estimation du potentiel de l'outil microchimie des otolithes en Nouvelle-Calédonie, avec un chapitre sur la détermination des signatures multi-élémentaires caractéristiques des différents habitats de la Grande Terre et un chapitre sur l'étude de la relation entre la microchimie de l'environnement et celle des otolithes. La seconde partie se concentre sur l'application de la méthodologie précédemment développée a des thématiques écologiques, avec un chapitre sur le rôle des mangroves sur le cycle de vie et la distribution géographique d'une espèce de Lutjanidae, Lutjanus fulviflamma, et un chapitre centré sur les mouvements réalisés au cours de la vie de cette espèce. Les résultats démontrent que la microchimie des otolithes présente un potentiel élevé en Nouvelle-Calédonie avec un fort pouvoir de discrimination entre la mangrove et les récifs coralliens. La relation entre la microchimie de l'environnement et celle des otolithes est complexe et dépend fortement des espèces considérées. Cependant, les contrastes chimiques marqués de l'environnement se retrouvent au sein des otolithes. Les résultats démontrent une connexion forte entre les différents habitats pour L.fulviflamma, particulièrement entre la mangrove et les récifs coralliens avec une importance cruciale de la mangrove comme zone de nurserie. Trois différents patrons de mouvements entre habitats ont été identifiés. Cette diversité illustre une forte variabilité de la connectivité écologique entre les individus, avec pour certains d'entre eux, une fréquentation de l'habitat juvénile durant la phase adulteEcological connectivity is defined by organism movements between habitats.Among the tools used to measure connectivity, otolith microchemistry is the only one able toreconstruct the fish movement throughout their entire lifetime, and thus include ontogeneticmigrations. However, it is seldom used in oligotrophic environments that typically show poorchemical contrasts such as coral reefs. In this context, this study focused on otolith microchemistryof coral reef and mangrove fishes of New Caledonia. This work comprises two parts. First, amethodological part to assess the potential of otolith microchemistry in New Caledonia, with onechapter on the determination of multi-elemental signatures of habitats from the Main Island and onechapter on the relationships between environmental and otoliths microchemistries. Second, thepreviously developed methodology was applied to ecological questions, with a chapter on theimportance of mangrove on the life cycle and the spatial distribution of a Lutjanidae, Lutjanusfulviflamma, and a chapter on the lifetime movement patterns of this species. Results revealed ahigh potential of otolith microchemistry in New Caledonia with a high power of discriminationbetween mangroves and coral reefs. Relationships between environmental and otolithmicrochemistries were complex and species-specific. However, strong chemical contrasts in theenvironment were traduced in the otoliths. Results showed a strong connection between differenthabitats for L. fulviflamma, in particular between mangroves and reefs with a crucial importance ofmangroves as nursery grounds. Three different patterns of lifetime movements among habitats wereidentified. This diversity illustrates a high variability of ecological connectivity patterns amongindividuals, with a possible return to the juvenile habitat during the adult stage
10
Castellanos-Galindo, Gustavo Adolfo [Verfasser], Ulrich [Akademischer Betreuer] Saint-Paul i Fernando [Akademischer Betreuer] Zapata. "The temporal and spatial variability of nursery habitats for fishes in macrotidal mangrove systems of Colombia and Brazil / Gustavo Adolfo Castellanos-Galindo. Gutachter: Ulrich Saint-Paul ; Fernando Zapata. Betreuer: Ulrich Saint-Paul". Bremen : Staats- und Universitätsbibliothek Bremen, 2013. http://d-nb.info/1072078481/34.
Pełny tekst źródłaKsiążki na temat "Mangrove habitats"
1
Group, Jacobs Engineering. Economic valuation of coral reefs and adjacent habitats in American Samoa: Final appendices. United States?]: Jacobs Engineering, 2004.
Znajdź pełny tekst źródła
2
Group, Jacobs Engineering. Economic valuation of coral reefs and adjacent habitats in American Samoa: Final report. [United States?]: Jacobs Engineering, 2004.
Znajdź pełny tekst źródła
3
Mangrove: The forgotten habitat. London: Immel, 1996.
Znajdź pełny tekst źródła
4
Hogarth, Peter J. The Biology of Mangroves (Biology of Habitats). Oxford University Press, USA, 2000.
Znajdź pełny tekst źródła
5
Hogarth, Peter J. The Biology of Mangroves (Biology of Habitats). Oxford University Press, USA, 2000.
Znajdź pełny tekst źródła
6
Study of floristic diversity and natural recruitment of mangrove species in selected mangrove habitats of South Gujarat. Gandhinagar: GEER Foundation, 2009.
Znajdź pełny tekst źródła
7
Study of floristic diversity and natural recruitment of mangrove species in selected mangrove habitats of South Gujarat. Gandhinagar: GEER Foundation, 2009.
Znajdź pełny tekst źródła
8
Vaughter, Philip, Jonghwi Park i Nancy Pham, red. Engaging Communities for Biodiversity Conservation: Education for Sustainable Development Projects from the Global RCE Network. United Nations University Institute for the Advanced Study of Sustainability, 2022. http://dx.doi.org/10.53326/hfps8375.
Pełny tekst źródłaStreszczenie:
This book features 12 case studies on biodiversity education projects developed by Regional Centres of Expertise on Education for Sustainable Development (RCEs), conducted from 2015–2019. The book explores innovative ways to educate, engage, and spur action in communities towards the protection and restoration of ecosystems, species, and habitats on local and regional scale. It provides recommendations on starting and scaling up practices based on the experiences of the RCEs. Key areas addressed within the publication include land use change, fragmentation of habitats, habitat rehabilitation, conservation of vascular plant species, and restoration of mangrove ecosystems.
9
Murchie, Karen J., i Pedram P. Daneshgar, red. Mangroves as Fish Habitat. American Fisheries Society, 2015. http://dx.doi.org/10.47886/9781934874424.
Pełny tekst źródła
10
Murchie, Karen J., i Pedram P. Daneshgar, red. Mangroves as Fish Habitat. American Fisheries Society, 2015. http://dx.doi.org/10.47886/9781934874424.
Pełny tekst źródłaCzęści książek na temat "Mangrove habitats"
1
Sundararaman, M., T. Boopathi i S. Gopinath. "Status of Mangrove Ecosystem". W Cellular Origin, Life in Extreme Habitats and Astrobiology, 209–24. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6112-7_11.
Pełny tekst źródła
2
Mongia, A. D., N. T. Singh i J. C. Dagar. "Soils of the mangrove habitats in the Andaman and Nicobar Islands". W Towards the rational use of high salinity tolerant plants, 501–9. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1858-3_53.
Pełny tekst źródła
3
Kimirei, I. A., M. M. Igulu, M. Semba i B. R. Lugendo. "Small Estuarine and Non-Estuarine Mangrove Ecosystems of Tanzania: Overlooked Coastal Habitats?" W Estuaries of the World, 209–26. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-25370-1_13.
Pełny tekst źródła
4
Haroun, R., A. Herrero Barrencua i A. D. Abreu. "Mangrove Habitats in São Tomé and Príncipe (Gulf of Guinea, Africa): Conservation and Management Status". W Coastal Research Library, 589–605. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73016-5_27.
Pełny tekst źródła
5
Lundquist, Carolyn J., Donald J. Morrisey, Rebecca V. Gladstone-Gallagher i Andrew Swales. "Managing Mangrove Habitat Expansion in New Zealand". W Mangrove Ecosystems of Asia, 415–38. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-8582-7_19.
Pełny tekst źródła
6
Ivanova Boncheva, Antonina, i Alfredo Bermudez-Contreras. "Blue Carbon in Emissions Markets: Challenges and Opportunities for Mexico". W Springer Climate, 265–83. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-82759-5_13.
Pełny tekst źródłaStreszczenie:
AbstractMangroves are ecosystems made up of trees or shrubs that develop in the intertidal zone and provide many vital environmental services for livelihoods in coastal areas. They are a habitat for the reproduction of several marine species. They afford protection from hurricanes, tides, sea-level rise and prevent the erosion of the coasts. Just one hectare of mangrove forest can hold up to 1,000 tons of carbon dioxide, more than tropical forests and jungles. Mexico is one of the countries with the greatest abundance of mangroves in the world, with more than 700,000 ha. Blue carbon can be a novel mechanism for promoting communication and cooperation between the investor, the government, the users, and beneficiaries of the environmental services of these ecosystems, creating public–private-social partnerships through mechanisms such as payment for environmental services, credits, or the voluntary carbon market. This chapter explores the possibilities of incorporating blue carbon in emissions markets. We explore the huge potential of Mexico’s blue carbon to sequester CO2. Then we analyse the new market instrument that allows countries to sell or transfer mitigation results internationally: The Sustainable Development Mechanism (SDM), established in the Paris Agreement. Secondly, we present the progress of the Commission for Environmental Cooperation (CEC) to standardize the methodologies to assess their stock and determine the magnitude of the blue carbon sinks. Thirdly, as an opportunity for Mexico, the collaboration with the California cap-and-trade program is analysed. We conclude that blue carbon is a very important mitigation tool to be included in the compensation schemes on regional and global levels. Additionally, mangrove protection is an excellent example of the mitigation-adaptation-sustainable development relationship, as well as fostering of governance by the inclusion of the coastal communities in decision-making and incomes.
7
Sasekumar, A., V. C. Chong, M. U. Leh i R. D’Cruz. "Mangroves as a habitat for fish and prawns". W The Ecology of Mangrove and Related Ecosystems, 195–207. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-017-3288-8_21.
Pełny tekst źródła
8
Khalil, Ahmed S. M. "Meiofauna of the Red Sea Mangroves with Emphasis on Their Response to Habitat Degradation: Sudan’s Mangroves as a Case Study". W Springer Oceanography, 419–35. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99417-8_23.
Pełny tekst źródła
9
Shekelle, Myron, Joan Stevenson, Blair Kaufer, Steven Stilwell i Agus Salim. "Mangrove". W Primates in Flooded Habitats, 105–9. Cambridge University Press, 2019. http://dx.doi.org/10.1017/9781316466780.016.
Pełny tekst źródła
10
"Mangroves as Fish Habitat". W Mangroves as Fish Habitat, redaktorzy Aaron J. Adams i Karen J. Murchie. American Fisheries Society, 2015. http://dx.doi.org/10.47886/9781934874424.ch3.
Pełny tekst źródłaStreszczenie:
<em>Abstract</em>.—Mangrove habitats are among the most threatened coastal habitats. Loss and degradation of mangroves have broad impacts because mangroves are important in prevention of coastal erosion, are excellent at carbon sequestration, and are critical habitats for many marine and estuarine fishes, including coral reef species. However, these species often lack the economic importance or charismatic characteristics to leverage conservation of mangrove habitats. Recent and ongoing research is demonstrating the importance of mangrove habitats to economically important recreational fish species that, in conjunction with reports on the economic impact of these fisheries, provides leverage for mangrove conservation. Two recreational fish species—Common Snook <em>Centropomus undecimalis </em>and Tarpon <em>Megalops atlanticus</em>—depend on mangrove habitats for one or more of their life stages. Two other species— Bonefish <em>Albula vulpes </em>and Barramundi <em>Lates calcarifer</em>—are concurrent with mangroves. Each species supports fisheries with annual economic impacts of hundreds of millions of dollars and a large constituency of users. The combination of biological and economic research on these and other recreational fish species can be used as tools for mangrove conservation, adding a much needed boost to coastal conservation efforts and providing protection to many ecologically important but less charismatic species.
Streszczenia konferencji na temat "Mangrove habitats"
1
Sitaresmi, S., Y. Yasman, A. Zahra, H. S. Putri i T. I. Hardiyanti. "An analysis of hydrocarbon degrading capabilities from three bacterial isolates from mangrove habitats in Muara Angke Jakarta". W PROCEEDINGS OF THE 3RD INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES 2017 (ISCPMS2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5064151.
Pełny tekst źródła
2
Shamsuzzaman, Muhammad. "Challenges of spatial planning in coastal regions of Bangladesh. A case for Chalna". W 55th ISOCARP World Planning Congress, Beyond Metropolis, Jakarta-Bogor, Indonesia. ISOCARP, 2019. http://dx.doi.org/10.47472/mkmg5699.
Pełny tekst źródłaStreszczenie:
The delta land Bangladesh has a unique coastline where numerous rivers meet the Bay of Bengal, creates a complex net of tidal river estuaries, forming the base for world’s largest mangrove forest the Sundarbans. Chalna is small town located at the confluence of Rupsha and Chunkuri rivers, only 9 km north of the Sundarbans, and a well know river port. The Sundarbans, which acts as a buffer between the sea and the human habitats including arable lands. The forest is rich in unique biodiversity and natural resources providing livelihoods of a large number of people living in the towns and villages around it. As the region is near the sea and land morphology is plain and of low altitude it is always vulnerable to natural disasters. Due to global warming and sea level rising the land mass is vulnerable to flooding. The sign of climate change; erratic behavior of rainfall and draught, intrusion of salinity etc., are changing the usual pattern of agriculture and fishing, affecting the livelihoods of the people here. The eco system of this mangrove forest is also threatened by recent policies of the Government and initiatives of private sectors of establishing high risk industrial establishments like thermal power plant, liquid petroleum gas stations etc., around Chalna and its surrounding region in sprawling manner. The potential of running large number of vessels through the rivers and canals of the Sundarbans might have negative impacts of the flora and fauna living there. Popular protests against these harmful interventions are being observed, international public organizations and concerned learned societies are also recommending not let these damaging developments going on. Although there are some promises from the government to the international agencies, there is no sign of management of such developments. This paper systematically investigates the reasons of this phenomenon, identifies the challenges and concludes that; absence of regional spatial planning in Bangladesh, neglecting the values of environment and public goods, defying the regulations in various ways and not accounting public opinions in the decision making process are the core ones.
3
Calderucio Duque Estrada, Gustavo, Jason Sali, Patrizio Piras, Norbert Jallais, Uchechukwu Amaechi, John Bedford-Fubara i Paola Maria Pedroni. "Mangrove Restoration and Conservation as a Carbon Offset Option: A Case Study in the Niger Delta Region". W Abu Dhabi International Petroleum Exhibition & Conference. SPE, 2021. http://dx.doi.org/10.2118/207725-ms.
Pełny tekst źródłaStreszczenie:
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.
4
Kazemi, Amirkhosro, Eduardo E. Castillo, Oscar Curet, Ruben Hortensius i Pothos Stamatios. "Volumetric Three-Componential Velocity Measurements (V3V) of Flow Structure Behind Mangrove-Root Type Models". W 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.
Pełny tekst źródłaStreszczenie:
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.
5
Swales, Andrew, Samuel J. Bentley, Catherine Lovelock i Robert G. Bell. "Sediment Processes and Mangrove-Habitat Expansion on a Rapidly-Prograding Muddy Coast, New Zealand". W Sixth International Symposium on Coastal Engineering and Science of Coastal Sediment Process. Reston, VA: American Society of Civil Engineers, 2007. http://dx.doi.org/10.1061/40926(239)111.
Pełny tekst źródła
6
Eni, Sri Pare, i M. Maria Sudarwani. "Pemilihan Pusat Pemerintahan dengan Konsep Kota Berkelanjutan Menggunakan Variabel Ekologi Lingkungan". W Temu Ilmiah IPLBI 2021. Ikatan Peneliti Lingkungan Binaan Indonesia, 2021. http://dx.doi.org/10.32315/ti.9.c035.
Pełny tekst źródłaStreszczenie:
Ibu kota Jakarta telah menjadi pusat pemerintahan sekaligus pusat bisnis sehingga menjadi daya tarik bagi penduduk untuk tinggal dan mencari pekerjaan di ibu kota. Tingginya tekanan penduduk di Provinsi DKI Jakarta terjadi akibat tingginya tingkat urbanisasi, sehingga menimbulkan berbagai permasalahan perkotaan khususnya permasalahan lingkungan. Hal ini mengakibatkan Jakarta menjadi kota yang tidak berkelanjutan karena hilangnya daya dukung lingkungan sebagai wilayah ibu kota negara, sehingga pemerintah memutuskan untuk memindahkan ibu kota negara ke luar Jawa.Tujuan Penelitian ini yaitu untuk mengkaji pemilihan lokasi baru pusat kota pemerintahan. Lokasi pusat Ibukotabaru yang ditetapkan pemerintah berada di Kawasan Hutan mangrove dan Perairan di kabupaten Penajam Paser Utara. Hasil penelitian ini menemukan bahwa pembangunan kota yang berkelanjutan harus memperhatikan upaya pelestarian lingkungan, karena pembangunan yang mengabaikan aspek ekologi lingkungan akan berdampak pada bencana ekologi yang mengakibatkan kepunahan habitat dan berujung pada kepunahan manusia yang hidup didalamnya. Kata Kunci : ibukota, kota berkelanjutan, ekologi
7
Lutaenko, Konstantin, i Konstantin Lutaenko. "COASTAL MARINE BIODIVERSITY OF VIETNAM: CURRENT PROBLEM". W Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b9371a04467.54905418.
Pełny tekst źródłaStreszczenie:
A brief overview of the coastal biodiversity of Vietnam based on surveys conducted by the A.V. Zhirmunsky Institute of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences for last 35 years. Main problems related to threats to biodiversity are discussed on the example of the intertidal communities, coral reefs, and molluscan diversity. Threats to marine biodiversity in Vietnam are summarized as follows: habitat degradation, fragmentation and loss (especially important are mangrove forest destruction, loss of coral reefs, change in landscape mosaic of wetland, estuary, sand and mud flats); global climate change including sea level rise, storm events, rainfall pattern change, warming of the coastal ocean; effects of fishing and other forms of overexploitation; pollution and marine litter; species introduction/invasions; physical alterations of coasts; tourism. Consolidated data of Vietnamese and Russian researchers on biodiversity and coastal zone management can be used in interpretations of ecosystem changes and for development of recommendations for local/national decision-makers.
8
Lutaenko, Konstantin, i Konstantin Lutaenko. "COASTAL MARINE BIODIVERSITY OF VIETNAM: CURRENT PROBLEM". W Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b43159228ea.
Pełny tekst źródłaStreszczenie:
A brief overview of the coastal biodiversity of Vietnam based on surveys conducted by the A.V. Zhirmunsky Institute of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences for last 35 years. Main problems related to threats to biodiversity are discussed on the example of the intertidal communities, coral reefs, and molluscan diversity. Threats to marine biodiversity in Vietnam are summarized as follows: habitat degradation, fragmentation and loss (especially important are mangrove forest destruction, loss of coral reefs, change in landscape mosaic of wetland, estuary, sand and mud flats); global climate change including sea level rise, storm events, rainfall pattern change, warming of the coastal ocean; effects of fishing and other forms of overexploitation; pollution and marine litter; species introduction/invasions; physical alterations of coasts; tourism. Consolidated data of Vietnamese and Russian researchers on biodiversity and coastal zone management can be used in interpretations of ecosystem changes and for development of recommendations for local/national decision-makers.
9
Goyal, Anubhav. "ESTRATEGIAS Y ENFOQUES PERTINENTES AL ESPACIO PÚBLICO PARA HACER FRENTE A LAS INUNDACIONES". W Seminario Internacional de Investigación en Urbanismo. Bogotá: Universidad Piloto de Colombia, 2022. http://dx.doi.org/10.5821/siiu.10153.
Pełny tekst źródłaStreszczenie:
Climate change and disasters are fast emerging as the most defining challenge of the 21st century as global risk. Changes in many extreme weather and climate events have been observed and linked with human influences, including an increase in extreme high sea levels and an increase in the number of heavy precipitation events. About 70 percent of the coastlines worldwide are projected to experience sea level change within 20 percent of the global mean. India, a developing country of global south and a major global contributor, is among the first ten countries in climate risk index. The country is witnessing average sea level rise of 1.7 mm/ year with rising sea projections in coastal cities. Further, India host a large percentage of urban population living in slums. Dharavi slum, Asia's biggest slum, located in the centre of Mumbai along the coast, host a population of more than a million in just 2.1 square kilometre. Slums are located at land which is usually unsuitable for formal development, being the low lying marshy areas along the river basins or coastal mangroves. As a direct cause, the physical location of the slums in developing world, makes them at a greater risk of flooding. Urban slums of metropolitan Mumbai, Kolkata and Surat in India, along with many others, are vulnerable to flooding. The present policy framework lack in providing for climate resilience and has thus compelled the slum dwellers to adapt to the risk of flooding with local community based measures involving public space retrofits.
The paper assess these adaptation measures and strategies from different coastal urban slums in India and aims to create a theoretical framework of measures and elements. Case study analysis approach is used to generate for adaptation strategies and presented in the parameters (type – time – role – intent and scale of adaptation). Results showcases a framework of adaptive and mitigation measures pertinent to local participation and public space retrofits for coastal urban slums. It enables the generation of a typology, lexicon of measures and elements, a toolkit to face extreme floods. Community mobilization with public space retrofits open new possibilities for addressing future floods and in gaining resilience.
Keywords: Adaptation, coping strategies, flood resilience in slums, public space retrofits. El cambio climático y las catástrofes se están convirtiendo rápidamente en el reto más definitorio del siglo XXI como riesgo global. Se han observado cambios en muchos fenómenos meteorológicos y climáticos extremos y se han relacionado con la influencia humana, como el aumento del nivel del mar extremadamente alto y el incremento del número de precipitaciones intensas. Se prevé que alrededor del 70% de las costas de todo el mundo experimenten un cambio en el nivel del mar dentro del 20% de la media mundial. India, un país en desarrollo del sur global y uno de los principales contribuyentes mundiales, se encuentra entre los diez primeros países en el índice de riesgo climático. El país está experimentando una subida media del nivel del mar de 1,7 mm/año con proyecciones de aumento del mar en las ciudades costeras. Además, India alberga un gran porcentaje de población urbana que vive en barrios marginales. El barrio marginal de Dharavi, el más grande de Asia, situado en el centro de Bombay a lo largo de la costa, alberga una población de más de un millón de personas en sólo 2,1 kilómetros cuadrados. Los barrios marginales están situados en terrenos que suelen ser inadecuados para el desarrollo formal, ya que son zonas pantanosas bajas a lo largo de las cuencas de los ríos o de los manglares costeros. Como causa directa, la ubicación física de los barrios marginales en el mundo en desarrollo hace que corran un mayor riesgo de inundación. Los barrios marginales del área metropolitana de Mumbai, Calcuta y Surat en India, junto con muchos otros, son vulnerables a las inundaciones. El marco político actual carece de resiliencia climática y, por tanto, ha obligado a los habitantes de los barrios marginales a adaptarse al riesgo de inundaciones con medidas locales basadas en la comunidad que implican la readaptación del espacio público.
El documento evalúa estas medidas y estrategias de adaptación de diferentes barrios marginales costeros de la India y pretende crear un marco teórico de medidas y elementos. Se utiliza un enfoque de análisis de casos para generar estrategias de adaptación y se presentan los parámetros (tipo - tiempo - función - intención y escala de la adaptación). Los resultados muestran un marco de medidas de adaptación y mitigación pertinentes para la participación local y la reconversión del espacio público para los barrios marginales urbanos de la costa. Permite generar una tipología, un léxico de medidas y elementos, una caja de herramientas para hacer frente a las inundaciones extremas. La movilización de la comunidad con la readaptación del espacio público abre nuevas posibilidades para hacer frente a futuras inundaciones y para ganar resiliencia.
Palabras clave: Adaptación, estrategias de afrontamiento, resiliencia a las inundaciones en barrios marginales, readaptación del espacio público.
Raporty organizacyjne na temat "Mangrove habitats"
1
Johannes Waldmüller, Johannes Waldmüller. How do Black women fishing communities in Ecuador and Madagascar manage mangrove habitats and mitigate climate change? Experiment, lipiec 2021. http://dx.doi.org/10.18258/20931.
Pełny tekst źródła