The community structure of macroalgae in a low shore mangrove forest in Selangor, Malaysia

1994 ◽  
pp. 131-137
Author(s):  
Sarala Aikanathan ◽  
A. Sasekumar
Keyword(s):  
Community Structure ◽  
Mangrove Forest

The community structure of macroalgae in a low shore mangrove forest in Selangor, Malaysia

Hydrobiologia ◽  
1994 ◽  
Vol 285 (1-3) ◽  
pp. 131-137 ◽  
Author(s):  
Sarala Aikanathan ◽  
A. Sasekumar
Keyword(s):  
Community Structure ◽  
Mangrove Forest

scholarly journals Impacts of exotic mangrove forests and mangrove deforestation on carbon remineralization and ecosystem functioning in marine sediments

2010 ◽  
Vol 7 (2) ◽  
pp. 2631-2671 ◽  
Author(s):  
A. K. Sweetman ◽  
J. J. Middelburg ◽  
A. M. Berle ◽  
A. F. Bernardino ◽  
C. Schander ◽  
...  
Keyword(s):  
Community Structure ◽  
Ecosystem Functioning ◽  
Mangrove Forest ◽  
Mangrove Forests ◽  
Short Term ◽  
Benthic Respiration ◽  
Faunal Abundance ◽  
Carbon Remineralization ◽  
And Control ◽  
Mangrove Biomass

Abstract. To evaluate how mangrove invasion and removal can modify benthic carbon cycling processes and ecosystem functioning, we used stable-isotopically labelled algae as a deliberate tracer to quantify benthic respiration and C-flow through macrofauna and bacteria in sediments collected from (1) an invasive mangrove forest, (2) deforested mangrove sites 2 and 6 years after removal of above-sediment mangrove biomass, and (3) two mangrove-free, control sites in the Hawaiian coastal zone. Sediment oxygen consumption (SOC) rates were significantly greater in the mangrove and mangrove removal site experiments than in controls and were significantly correlated with total benthic (macrofauna and bacteria) biomass and sedimentary mangrove biomass (SMB). Bacteria dominated short-term C-processing of added microalgal-C and benthic biomass in sediments from the invasive mangrove forest habitat. In contrast, macrofauna were the most important agents in the short-term processing of microalgal-C in sediments from the mangrove removal and control sites. Mean faunal abundance and short term C-uptake rates in sediments from both removal sites were significantly higher than in control cores, which collectively suggest that community structure and short-term C-cycling dynamics in habitats where mangroves have been cleared can remain fundamentally different from un-invaded mudflat sediments for at least 6-yrs following above-sediment mangrove removal. In summary, invasion by mangroves can lead to large shifts in benthic ecosystem function, with sediment metabolism, benthic community structure and short-term C-remineralization dynamics being affected for years following invader removal.

scholarly journals ANALISIS POTENSI SUMBERDAYA MANGROVE DI DESA SARAWET, SULAWESI UTARA, SEBAGAI KAWASAN EKOWISATA

2012 ◽  
Vol 8 (2) ◽  
pp. 44
Author(s):  
Peter Mangindaan ◽  
Adnan Sj Wantasen ◽  
Stephanus V Mandagi
Keyword(s):  
Community Structure ◽  
Natural Resources ◽  
Mangrove Forest ◽  
Moderate Level ◽  
Local Culture ◽  
Mangrove Area ◽  
A Value ◽  
The Village

Kawasan pesisir Desa Sarawet Likupang Timur memiliki mangrove seluas 379 hektar dan me­miliki potensi untuk dikembangkan sebagai kawasan ekowisata. Berdasarkan hal tersebut, penelitian ini bertujuan untuk (1) Menganalisis struktur komunitas hutan mangrove di Desa Sarawet (2) Mengkaji po­tensi kawasan pesisir Desa Sarawet untuk dikembangkan menjadi kawasan ekowisata berbasis mangrove. Hasil analisis terhadap 6 variabel yaitu sumberdaya alam, budaya lokal, sosial-ekonomi masyarakat, in­frastuktur kawasan, institusional dan kemungkinan dampak di kawasan pesisir Desa Sarawet menghasil­kan nilai 3,7. Nilai ini menunjukkan bahwa kawasan pesisir Desa Sarawet berada pada level moderat ya­ng berarti dapat dikembangkan sebagai kawasan ekowisata berbasis mangrove. Kata kunci: Sarawet; ekowisata; mangrove   Coastal village of East Likupang Sarawet has 379 hectares of mangrove area and has the poten­tial to be developed as an ecotourism area. Accordingly, this study aimed to (1) To analyze the community structure of mangrove forest in the village of Sarawet (2) To assess the potential of the coastal village of Sarawet to be developed into a mangrove-based ecotourism region. The results of the analysis on six va­riables, namely natural resources, local culture, socio-economic communities, regional infrastructure, institutional and likely impact on the coastal village of Sarawet produce a value of 3.7. This value indi­cates that the coastal village of Sarawet is at the moderate level wich means it can be developed as a mangrove-based ecotourism area. Keywords: Sarawet; ecotourism; mangroves.

Benthic Meiofaunal Diversity in Four Zones of Pichavaram Mangrove Forest, India

2021 ◽  
Vol 51 (4) ◽  
pp. 294-307
Author(s):  
Rengasamy Punniyamoorthy ◽  
Perumal Murugesan ◽  
Gopalan Mahadevan ◽  
Alberto Sanchez
Keyword(s):  
Organic Matter ◽  
Community Structure ◽  
Mangrove Forest ◽  
Environmental Parameters ◽  
The Other ◽  
Sediment Texture ◽  
Field Sampling ◽  
Key Variables ◽  
Sediment Ph ◽  
Richness Index

ABSTRACT The community structure of meiofauna was assessed relative to environmental parameters in four zones (non-mangrove, Avicennia zone, mixed zone, and Rhizophora zone) of Pichavaram Mangrove Forest, which is located along the southeast coast of India. Field sampling was carried out from June 2016–May 2017. The meiofaunal data were evaluated using univariate and multivariate statistics. The highest abundance of meiofauna (434 ind/10 cm−2) was recorded in the Rhizophora zone and the lowest (270 ind/10 cm−2) in the non-mangrove zone. A total of 62 species representing four meiofaunal groups were recorded, including 38 species of foraminifera, 12 species of nematodes, seven species of ostracods, and five species of harpacticoids. Diversity (Shannon H′) mostly ranged from 3–4, and was highest (3.86±0.26) in the Avicennia zone and averaged ∼3.3 in the other three zones. The Margalef richness index was ∼6 in the Avicennia and Rhizophora zones and ∼5 in the non-mangrove and mixed zones. The BIO-ENV and CCA analyses identified sediment texture and organic matter as key variables influencing the distribution of meiofauna, while % calcium carbonate, salinity, and sediment pH were also important. Monitoring studies of meiofaunal taxa may help elucidate their roles in coastal blue-carbon cycling and will also contribute to understanding how mangrove-associated habitats influence meiofaunal distributions.

scholarly journals Community Structure and Biodiversity of Soil Ciliates at Dongzhaigang Mangrove Forest in Hainan Island, China

2010 ◽  
Vol 2010 ◽  
pp. 1-8 ◽  
Author(s):  
Jing Li ◽  
Qingyu Liao ◽  
Mei Li ◽  
Jinhong Zhang ◽  
Nora Fungyee Tam ◽  
...  
Keyword(s):  
Organic Matter ◽  
Community Structure ◽  
Mangrove Forest ◽  
Chemical Properties ◽  
Hainan Island ◽  
Community Similarity ◽  
Dominant Group ◽  
Soil Ciliates ◽  
Physical Chemical ◽  
Total Potassium

The distribution of soil ciliates in three different habitats within a typical mangrove forest in Dongzhaigang, Hainan, China was investigated. The abundance, biodiversity, and community similarity of ciliates in fresh and air-dried soil with different, physical/chemical properties were analyzed. Three Classes, 11 Orders, 34 Genera, and 70 species of ciliates were found with the first dominant group being Hypotrichida. Ciliate biodiversities followed Site B < Site A < Site C in both fresh and dried samples. Ciliate abundance was positively correlated with soil moisture, salinity, organic matter (OM), total nitrogen (TN), total phosphorus (TP), and sulfate (SO42−), but negatively with pH and total potassium (TK). Site A and Site B and Site B and Site C showed the highest similarity in fresh and dried samples, respectively. The ubiquitous characteristics of ciliate distribution suggested their important role in food webs and nutrient cycling. The presence of Colpodida was linked with mangrove plants.

Community structure and standing crop biomass of a mangrove forest in Futian Nature Reserve, Shenzhen, China

Hydrobiologia ◽  
1995 ◽  
Vol 295 (1-3) ◽  
pp. 193-201 ◽  
Author(s):  
N. F. Y. Tam ◽  
Y. S. Wong ◽  
C. Y. Lan ◽  
G. Z. Chen
Keyword(s):  
Community Structure ◽  
Standing Crop ◽  
Mangrove Forest ◽  
Nature Reserve ◽  
Crop Biomass

A baseline study of the diversity and community ecology of crab and molluscan macrofauna in the Sematan mangrove forest, Sarawak, Malaysia

2003 ◽  
Vol 19 (2) ◽  
pp. 127-142 ◽  
Author(s):  
Elizabeth C. Ashton ◽  
Donald J. Macintosh ◽  
Peter J. Hogarth
Keyword(s):  
Community Structure ◽  
Surface Water ◽  
Mangrove Forest ◽  
Species Number ◽  
Mature Trees ◽  
Young Leaves ◽  
Water Ph ◽  
Management And Conservation ◽  
Molluscan Species ◽  
Seedling Community

Baseline ecological studies of pristine mangroves are important for monitoring, management and conservation of mangrove ecosystems. Diversity, density, biomass and community structure of crab and molluscan macrofauna were studied in a near-pristine mangrove forest in Sematan, Sarawak. In each of the nine 100-m2 plots, six 15-min catching periods were used to collect crabs and three 1-m2 quadrats were sampled for molluscan epifauna. Environmental variables and vegetation were also recorded in each 100-m2 plot. Thirty-one crab species and 44 molluscan species were recorded, including a few species not previously reported from Sarawak. Crab community structure was correlated with topographical height and surface water pH and salinity. Gastropod community structure was correlated with redox potential of water at depth, topographical height, surface water pH and leaf litter. Crab community structure and species number were positively correlated with tree and seedling community structure and diversity, suggesting that the mangrove vegetation is important to the crab fauna as a habitat and food supply. Molluscan abundance was positively correlated with sapling diversity and negatively correlated with the numbers of mangrove associates and tree species. The young leaves on mangrove saplings may provide a better food source than those on mature trees or mangrove associates. The data from this study provide a valuable baseline for future use at this site and for comparison with more degraded mangrove habitats elsewhere in South-East Asia.

scholarly journals Impacts of exotic mangrove forests and mangrove deforestation on carbon remineralization and ecosystem functioning in marine sediments

2010 ◽  
Vol 7 (7) ◽  
pp. 2129-2145 ◽  
Author(s):  
A. K. Sweetman ◽  
J. J. Middelburg ◽  
A. M. Berle ◽  
A. F. Bernardino ◽  
C. Schander ◽  
...  
Keyword(s):  
Community Structure ◽  
Ecosystem Functioning ◽  
Mangrove Forest ◽  
Mangrove Forests ◽  
Short Term ◽  
Benthic Respiration ◽  
Faunal Abundance ◽  
Carbon Remineralization ◽  
And Control ◽  
Mangrove Biomass

Abstract. To evaluate how mangrove invasion and removal can modify short-term benthic carbon cycling and ecosystem functioning, we used stable-isotopically labeled algae as a deliberate tracer to quantify benthic respiration and C-flow over 48 h through macrofauna and bacteria in sediments collected from (1) an invasive mangrove forest, (2) deforested mangrove sites 2 and 6 years after removal of above-sediment mangrove biomass, and (3) two mangrove-free control sites in the Hawaiian coastal zone. Sediment oxygen consumption (SOC) rates averaged over each 48 h investigation were significantly greater in the mangrove and mangrove removal site experiments than in controls and were significantly correlated with total benthic (macrofauna and bacteria) biomass and sedimentary mangrove biomass (SMB). Bacteria dominated short-term C-processing of added microalgal-C and benthic biomass in sediments from the invasive mangrove forest habitat and in the 6-yr removal site. In contrast, macrofauna were the most important agents in the short-term processing of microalgal-C in sediments from the 2-yr mangrove removal site and control sites. However, mean faunal abundance and C-uptake rates in sediments from both removal sites were significantly higher than in control cores, which collectively suggest that community structure and short-term C-cycling dynamics of sediments in habitats where mangroves have been cleared can remain fundamentally different from un-invaded mudflat sediments for at least 6-yrs following above-sediment mangrove removal. In summary, invasion by mangroves can lead to dramatic shifts in benthic ecosystem function, with sediment metabolism, benthic community structure and short-term C-remineralization dynamics being affected for years following invader removal.

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