THE INFLUENCE OF ENVIRONMENTAL FACTORS TO MOLLUSCS DISTRIBUTION PATTERNS IN NATURAL AND REHABILITATED MANGROVE ECOSYSTEM

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Andi Nur Samsi ◽  
Sharifuddin Bin Andy Omar ◽  
Andi Niartiningsih
Keyword(s):  
Environmental Factors ◽  
Distribution Pattern ◽  
Quantitative Method ◽  
Distribution Patterns ◽  
Mangrove Ecosystem ◽  
Dispersal Patterns ◽  
Carbon And Nitrogen ◽  
Mangrove Ecosystems ◽  
Mollusc Species ◽  
Carbon And Nitrogen Content

Mangrove ecosystem is a habitat of Molluscs (Gastropoda and Bivalvia). This ecosystem is always influenced by environmental factors. This study aims to determine the influence of environmental factors on the distribution patterns Molluscs of natural mangrove ecosystems in Pannikiang Island, Barru Regency and rehabilitation mangrove ecosystem in Tongke-tongke village, Sinjai regency. This research uses the quantitative method. Environmental factors measured were temperature and salinity of the water, as well as carbon and nitrogen content of sediment. Samples of Molluscs (Gastropoda and Bivalves) and sediments were taken randomly. The observations of the Molluscan community include the composition of Mollusc species (Gastropoda and Bivalvia) and dispersal patterns. Data were analyzed by using multiple linear regression. The results showed that the distribution pattern of Molluscs (Gastropoda and Bivalvia) at both sites was not significantly different and the temperature, salinity, carbon, and nitrogen sediments also did not affect the Mollusk distribution pattern in both sites. Ekosistem mangrove merupakan habitat Moluska (Gastropoda dan Bivalvia). Ekosistem ini selalu dipengaruhi oleh faktor lingkungan. Penelitian ini bertujuan untuk mengetahui pengaruh faktor lingkungan terhadap pola distribusi  pada ekosistem mangrove alami di Pulau Pannikiang, Kabupaten Barru dan ekosistem mangrove hasil rehabilitasi di Desa Tongke-tongke, Kabupaten Sinjai. Penelitian ini menggunakan metode kuantitatif. Faktor lingkungan yang diukur adalah suhu dan  salinita air, serta kandungan karbon dan nitrogen sedimen. Sampel Moluska (Gastropoda dan Bivalvia) dan sedimen diambil secara acak. Pengamatan komunitas Moluska meliputi komposisi jenis Moluska (Gastropoda dan Bivalvia) dan pola penyebaran. Data dianalisis dengan menggunakan regresi linear berganda. Hasil penelitian menunjukkan pola distribusi Moluska (Gastropoda dan Bivalvia) pada kedua lokasi tidak berbeda nyata dan suhu, salinitas, karbon, dan nitrogen sedimen juga tidak mempengaruhi pola distribusi Moluska di kedua lokasi penelitian.

scholarly journals Determination of Key Environmental Factors Responsible for Distribution Patterns of Fiddler Crabs in a Tropical Mangrove Ecosystem

PLoS ONE ◽  
2015 ◽  
Vol 10 (1) ◽  
pp. e0117467 ◽  
Author(s):  
Mohammad Mokhtari ◽  
Mazlan Abd Ghaffar ◽  
Gires Usup ◽  
Zaidi Che Cob
Keyword(s):  
Environmental Factors ◽  
Distribution Patterns ◽  
Mangrove Ecosystem ◽  
Fiddler Crabs

scholarly journals Kajian Perubahan Bioekologi pada Restorasi Ekosistem Mangrove di Segara Anakan Cilacap

Biosfera ◽  
2015 ◽  
Vol 32 (1) ◽  
pp. 19 ◽  
Author(s):  
Erwin Riyanto Ardli ◽  
Ani Widyastuti ◽  
Edy Yani
Keyword(s):  
Environmental Factors ◽  
Mangrove Ecosystem ◽  
Survey Method ◽  
First Year ◽  
Shrub Species ◽  
Mangrove Restoration ◽  
Mangrove Ecosystems ◽  
Low Diversity ◽  
Biodiversity Analysis ◽  
Cluster Random Sampling

Mangroves are coastal ecosystems that have a very large role for humans and ecosystems in the vicinity. Mangrove condition in Indonesia, including in Segara Chicks Cilacap experiencing enormous pressure resulting in damage to the mangrove ecosystem. Mangrove restoration is the process of return of mangrove ecosystems of the conditions are broken into previously conditioned as well. The general objective of this study was 1) determine the conditions and amendments BioEkologi mangrove ecosystem restoration in the area of results Segara Chicks. Specific objectives in the study the first year is to determine: 1) the community structure of mangrove ecosystems (vegetation and fauna associations) at a restoration site in the region Segara Chicks, 2) the spatial variation community mangrove ecosystem in the area of restoration, and 3) the condition of the environmental factors that support the mangrove restoration in the region Segara Chicks. The method used was survey method with the technique of sampling cluster random sampling. The data obtained were analyzed multivatiate covering biodiversity analysis, cluster analysis, multi-dimensional sclae (MDS), and Bio-env using PRIMER-E program. The study shows the restoration of mangrove vegetation in the region have relatively low diversity (H '<1), and in areas that have not been restored only dominated shrub species (Acanthus and Derris). Environmental factors generally favor mangrove Vegetasia life, and have the same tendency for each restoration location with a level of similarity> 95%.

Mapping species distributions as a tool in marine ecology

1978 ◽  
Vol 76 (1-3) ◽  
pp. 201-213 ◽  
Author(s):  
Trevor A. Norton
Keyword(s):  
Environmental Factors ◽  
Distribution Pattern ◽  
Experimental Work ◽  
Current Velocity ◽  
Species Distributions ◽  
Distribution Patterns ◽  
Marine Species ◽  
Marine Ecology ◽  
Distribution Maps ◽  
Geographical Scale

SynopsisMaps are shown to be the most striking way of displaying the distribution of marine species on a geographical scale. They have been used to indicate not only the presence or absence of a species, but also its abundance. A single map only records the distribution pattern at a particular moment in time, but repeated mapping clearly demonstrates temporal fluctuations. Many ecological insights have been derived from distribution maps especially when they are compared with records of environmental factors such as substratum type, current velocity or temperature. Moreover maps actually stimulate experimental work which seeks to explain the distribution patterns displayed.

Intertidal meiofauna communities along an estuarine gradient in a protected area (Ria de Foz, north-west Spain)

2011 ◽  
Vol 92 (1) ◽  
pp. 63-72 ◽  
Author(s):  
M. Rubal ◽  
C. Besteiro ◽  
P. Veiga
Keyword(s):  
Environmental Factors ◽  
Distribution Pattern ◽  
Social Services ◽  
Nature Reserve ◽  
Environmental Gradients ◽  
River Mouth ◽  
Distribution Patterns ◽  
Environmental Variable ◽  
North West ◽  
Estuarine Gradient

The northern Galician rias provide important economic and social services from fisheries, shellfish harvesting and recreational activities. Consequently, these rias have been included in the Nature 2000 Network as a Special Conservation Zone. The aims of this study were to describe the meiofauna spatial structure in terms of diversity and abundance of major taxa, as well as its relationship with the environmental characteristics in the Ria de Foz nature reserve. For this aim, environmental gradients and distribution patterns of intertidal meiobenthic communities at the Ria de Foz nature reserve were studied using multivariate methods. Ria de Foz showed to be a complex transitional habitat with significant changes in its environment along the estuarine gradient. An abundant and rich meiofauna community was reported at Ria de Foz. A total of 21 higher taxa of meiofauna were found. The most common taxa were nematodes, copepods, ostracods and turbellarians. Three clear different meiobenthic communities were defined. These three communities showed a clear spatial distribution pattern along the estuarine gradient. Moreover, a high degree of similarity between distribution patterns of meiobenthic communities and previously studied macrobenthic communities was found. Regarding the role of environmental factors shaping meiobenthic community distribution patterns distance to the river mouth was the environmental variable that best explained meiobenthic community structure and distribution. Therefore, changes on hydrodynamics that affect environmental factors related to the estuarine gradient will change the distribution pattern and diversity of benthic communities. This work provides the first information about meiobenthos diversity and structure in the Ria de Foz nature reserve and should be useful for future management and conservation plans on this and other similar protected areas.

scholarly journals Mud Clam’s (Anodentia edentula) Density and Distribution Pattern in Kalangan Mangrove Forest Ecosystem

2020 ◽  
Vol 5 (2) ◽  
pp. 58-64
Author(s):  
Susi Mei ◽  
Sayu Natio Tarihoran ◽  
Arsanti Arsanti ◽  
Rodhi Firmansyah ◽  
Dian Fitri M ◽  
...  
Keyword(s):  
Distribution Pattern ◽  
Forest Ecosystem ◽  
Mangrove Forest ◽  
Distribution Patterns ◽  
Research Station ◽  
Staple Food ◽  
Pattern Clustering ◽  
Mangrove Ecosystems ◽  
The People ◽  
The Future

The excessive use of Mud Shells (Anodentia edentula) as a staple food by the people of Kalangan Village, Central Tapanuli Regency caused the decline of the shellfish population. This is marked by the scattering of mud shells at research sites and often people conduct shell-searching activities at low tide. Therefore, a scientific study is needed to know the density and distribution patterns as the basis for the possibility of cultivation activities, management of mud shell germplasm (Anodentia edentula), and mangrove ecosystems in kalangan area in the future optimally, sustainably, and sustainably. The study was conducted in September 2020, using the 1x1m2 transect method purposive sampling at low tide. The results showed that the density of Mud Shells (Anodentia edentula) amounted to 150 ind/m2 in Station I, 0 ind/m2 in Station II with distribution pattern clustering, and 43 ind/m2 in Station III with distribution pattern random. With the evidence that there is a research station that contain zero mud clam and with unsimilarity in distribution pattern that should be clustering in every research station, therefore it can be concluded that the abudance of mud clam in the ecosystem already decline both quantifically and qualitativelyand requires conservation and cultivation action to ensure its existence in the future.

scholarly journals Mangrove crab intestine and habitat sediment microbiomes cooperatively work on carbon and nitrogen cycling

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0261654
Author(s):  
Prasert Tongununui ◽  
Yuki Kuriya ◽  
Masahiro Murata ◽  
Hideki Sawada ◽  
Michihiro Araki ◽  
...  
Keyword(s):  
Nitrogen Cycling ◽  
Cellulose Degradation ◽  
Cellulase Activity ◽  
Intestinal Bacteria ◽  
Mangrove Ecosystem ◽  
Intestinal Microbiome ◽  
Carbon And Nitrogen ◽  
Carbon And Nitrogen Cycling ◽  
Mangrove Ecosystems ◽  
Mangrove Crab

Mangrove ecosystems, where litter and organic components are degraded and converted into detrital materials, support rich coastal fisheries resources. Sesarmid (Grapsidae) crabs, which feed on mangrove litter, play a crucial role in material flow in carbon-rich and nitrogen-limited mangrove ecosystems; however, the process of assimilation and conversion into detritus has not been well studied. In this study, we performed microbiome analyses of intestinal bacteria from three species of mangrove crab and five sediment positions in the mud lobster mounds, including the crab burrow wall, to study the interactive roles of crabs and sediment in metabolism. Metagenome analysis revealed species-dependent intestinal profiles, especially in Neosarmatium smithi, while the sediment microbiome was similar in all positions, albeit with some regional dependency. The microbiome profiles of crab intestines and sediments were significantly different in the MDS analysis based on OTU similarity; however, 579 OTUs (about 70% of reads in the crab intestinal microbiome) were identical between the intestinal and sediment bacteria. In the phenotype prediction, cellulose degradation was observed in the crab intestine. Cellulase activity was detected in both crab intestine and sediment. This could be mainly ascribed to Demequinaceae, which was predominantly found in the crab intestines and burrow walls. Nitrogen fixation was also enriched in both the crab intestines and sediments, and was supported by the nitrogenase assay. Similar to earlier reports, sulfur-related families were highly enriched in the sediment, presumably degrading organic compounds as terminal electron acceptors under anaerobic conditions. These results suggest that mangrove crabs and habitat sediment both contribute to carbon and nitrogen cycling in the mangrove ecosystem via these two key reactions.

scholarly journals COMMUNITY STRUCTURE OF GASTROPOD (MOLLUSCA) IN THE MANGROVE ECOSYSTEM OF PURNAMA, DUMAI CITY RIAU PROVINCE

2020 ◽  
Vol 3 (2) ◽  
pp. 111-122
Author(s):  
Sandy Bahari ◽  
Syafruddin Nasution ◽  
Efriyeldi
Keyword(s):  
Community Structure ◽  
Distribution Pattern ◽  
Mangrove Forest ◽  
Distribution Patterns ◽  
Mangrove Ecosystem ◽  
Survey Method ◽  
Sampling Location ◽  
Anova Analysis ◽  
Gastropod Species ◽  
Transect Line

This research was conducted in January 2019 on the mangrove ecosystem of  Purnama Dumai City,  Riau Province with the aim to determine the structure of the gastropod community which includes the type, density, diversity, distribution patterns and similarity of the community. The method used is a survey method, where the sampling location consists of 5 research stations. The type and density of gatropods are determined by drawing a transect line from the mangrove forest towards the highest tide line. The transect was placed in 3 1x1 m2 maps with a distance of 10 m. The results showed that the Gastropod species found consisted of 6 species, namely Nerita costata, Telebrelia sulcata, Cicopreus capucinus, Telescopium telelescopium, Littorina sp, Volema myristican. Based on ANOVA analysis, gastropod density between stations was not significantly different in the waters of Purnama Village, Dumai City. Diversity is categorized as medium, Uniformity is categorized as balanced and the dominance of certain types. While the overall distribution pattern of Gastropods tends to be clustered.

scholarly journals Potential geographical distribution and environmental explanations of rare and endangered plant species through combined modelling: A case study of Northwest Yunnan, China

2020 ◽  
Author(s):  
Pengcheng Ye ◽  
Guangfu Zhang ◽  
Xiao Zhao ◽  
Hui Chen ◽  
Qin Si ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Distribution Pattern ◽  
Geographical Distribution ◽  
Plant Species ◽  
Ecological Niche ◽  
Potential Distribution ◽  
Distribution Patterns ◽  
Endangered Plant ◽  
Rare And Endangered ◽  
Geographical Distribution Pattern

In recent decades, due to the effect of climate change and the interference of human activities, the species habitat index fallen 2%. Studying the geographical distribution pattern and predicting the potential geographical distribution of species are of great significance for developing scientific and effective biodiversity conservation strategies. The purpose of this research is to predict the potential geographical distribution of 25 rare and endangered plant species in Northwest Yunnan, China on the grid map with a resolution of 0.05° × 0.05° and analyze the explanation capabilities of various environmental factors on the potential geographical distribution patterns of these species, and explore the main restrictive environmental factors. Initially, we employed the ecological niche model MaxEnt to predict the potential geographical distribution of target species. Following that, we overlaid the potential geographical distribution of each species, and we obtained the potential geographical distribution pattern of species richness on the spatial scale of the ecological niche model with a resolution of 0.05° × 0.05°. Ultimately, we also adopted geographically weighted regression (GWR) model to investigate the explanation capabilities of various environmental parameters on the potential distribution patterns. The results showed that the average AUC value of each species was between 0.80 and 1.00, which indicated that the simulation precision of the MaxEnt model for each species was good or excellent. Besides, the potential distribution areas of these species were between 826.33 km2 and 44,963.53 km2. In addition, the average contribution values of the annual precipitation (Bio12), precipitation of coldest quarter (Bio19) and population density (Pop) were 25.92%, 15.86% and 17.95%, respectively. Moreover, the goodness of fit R2 and AIC value of the water model were 0.88 and 7,703.82, respectively, which indicated the water factor largely influenced the potential distribution of these species. The results of this study would be helpful for implementing long-term conservation and reintroduction for these species.

scholarly journals Study on Abundance and Distribution Pattern of Collembola on Three Types of Land Utilizations in Banjar Regency, South Kalimantan

2020 ◽  
Vol 5 (3) ◽  
pp. 107-117
Author(s):  
Manap Trianto ◽  
Fajri Marisa
Keyword(s):  
Environmental Factors ◽  
Distribution Pattern ◽  
Oil Palm ◽  
Sampling Method ◽  
Distribution Patterns ◽  
Sampling Location ◽  
Ecosystem Development ◽  
Soil Organism ◽  
Land Utilization ◽  
Abundance And Distribution

Collembola is one of soil organism which classified as mesofauna. This reseach is aims to study the abundance and distribution patterns of Collembola on three types of land utilization in Banjar District, South Kalimantan Province. This research was conducted on April 2020 by using a purposive sampling method. Based on results of Collembola identification obtained at the sampling location, there are 12 genera, 6 families, and 2 orders of Collembola. The highest abundance is found in oil palm plantations. While the Collembola distribution pattern on the three types of land clearing is the same, which is clustering. The results of this study are expected to provide information on the study of abundance and distribution patterns of Collembola in South Kalimantan Province related to environmental factors also help in carrying out sustainable ecosystem development.

Sign in / Sign up

Export Citation Format

Share Document