Temporal and spatial distribution of macrobenthos communities and their responses to environmental factors in Lake Taihu

Xie, Zhen; Zhang, Jie; Cai, Kun; Xu, Zhen-Lin; Wu, Donghao; Wang, Beixin

doi:10.1016/j.chnaes.2015.12.005

Cited by 22 publications

(12 citation statements)

References 19 publications

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“…Based on the study results, it is found that the average density of horseshoe crabs in Sedati waters (Table 1) in October was 0.08 ind/m2, in November was 0.05 ind / m2, and in December was 0.05 ind/m2. This result is in accordance with Xie et al [21] statement that the amount of horseshoe crab distribution is influenced by several factors, including uniform environmental conditions, eating habits, and the ability to tolerate the availability of environmental resources. The number of horseshoe crabs in the B zone in October, November, and December was higher than in the A zone (Figure 2).…”

Section: A Population Density Of Horseshoe Crabssupporting

confidence: 92%

Correlation of Environmental Factors With Population of Horseshoe Crab (Tachypleus gigas) in Sedati Waters, Sidoarjo District

Vernanda¹,

Sari²,

Cahyoko³

et al. 2022

International Journal on Advanced Science, Engineering and Information Technology

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Horseshoe crabs (Tachypleus gigas) in local called Mimi are coastal animals belonging to the Limulidae family. The horseshoe crabs live at the bottom of calm coastal waters and river estuaries with sandy and muddy bottoms. The decrease in the population number of horseshoe crabs in nature could be caused by habitat degradation, including coastal abrasion, ecosystem damage, and the death of natural resources in the waters. This study aims to determine the correlation of environmental factors with the population of Horseshoe Crab (Tachypleus gigas) in Sedati waters, Sidoarjo District. This type of research was exploratory with data analysis using linear regression and simple correlation. Moreover, the sampling was carried out by purposive random sampling at predetermined points of the station in Sedati Waters, Sidoarjo District. The results show that the average density in October was 0.08 ind/m2, in November was 0.05 ind/m2, and in December was 0.05 ind/m2. Moreover, the correlation between the horseshoe crabs and water quality is noted in the current of 58%, transparency of 37%, and DO of 33%. Based on the results of this study, the environmental factors including transparency, currents, and DO have a strong correlation on the horseshoe crab population in Sedati waters, while pH, ammonia, carbon, and microfauna parameters have a quite influential effect on the population of horseshoe crabs.

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Section: A Population Density Of Horseshoe Crabssupporting

confidence: 92%

Correlation of Environmental Factors With Population of Horseshoe Crab (Tachypleus gigas) in Sedati Waters, Sidoarjo District

Vernanda¹,

Sari²,

Cahyoko³

et al. 2022

International Journal on Advanced Science, Engineering and Information Technology

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“…Benthic studies in estuaries have demonstrated that the distribution of macrobenthos shows a clear affinity with abiotic variables [30,34,71,[81][82][83][84][85][86], and this is consistent with the current study. In our study area, Spearman's rank correlations indicated that abundance had significantly positive correlations with soil pH, salinity and alkalinity, which was true in most other research findings [32,45].…”

Section: Relationship Between Macrobenthos and Physico-chemical Varia...supporting

confidence: 92%

Macrobenthic Assemblages, Distribution and Functional Guilds from a Freshwater-Dominated Tropical Estuary

et al. 2022

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Assessment of benthic diversity and estuarine ecological quality is becoming increasingly important. Estuaries are not only highly productive and variable environments, but they are also areas of high anthropogenic perturbations. In this study, benthic macrofauna were sorted, identified and analyzed from a freshwater-dominated tropical estuary along the Bay of Bengal to assess their community structure, distribution and functional guilds, and to uncover the environmental drivers influencing their distributional patterns. Results revealed that the studied physio-chemical variables (DO, pH, alkalinity and temperature) were significantly varied (p < 0.05) among the sites. Capitella sp. was dominant (18%) of the forty morphospecies recorded, indicating organic richness of the area. The ANOVA results revealed that macrobenthic density differed significantly (p < 0.01) between the study locations, and diversity indices (Shannon diversity index, H′) also differed significantly (F4,12 = 5.89; p = 0.02). The benthic density decreased from the head to the mouth, which could be related to salinity fluctuations and large freshwater discharges. Upstream sites were completely segregated from downstream and mid-estuarine sites, according to cluster analysis (CA). The SIMPER results clarified the site grouping pattern, showing that Mysis-1 spp., Capitella spp. and Nephtys-1 were the most significant contributors. From the communities, five functional trophic groups were identified where deposit feeders were the most dominant (66.44%). Most of the macrobenthos had strong positive correlations with DO (r = 0.92) and water temperature (r = 0.86) and a negative correlation with soil pH (r = −0.28), per correlation and CCA analyses. Individually, soil pH (r = 0.88) and alkalinity (r = 0.898) showed strong positive correlation with Capitella sp. and Chironomus sp.2. The above results indicate that macrobenthos of this estuary do not follow the usual pattern of spatial distribution, and they are structured by DO, alkalinity and soil pH. In addition, dominance of some pollution indicator species (Capitella sp. and Chironomus sp.) and deposit feeders indicates a poor ecological condition of the estuary.

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“…Xie et al . 21 studied that there were a total of 42 macrobenthos species with C. fluminea, L. hoffmeisteri and Tubificidae sp. as the indicator species of the whole lake from the winter of 2010 to the autumn of 2012, and the main abiotic factors affecting the benthic community varied depending on the districts of the lake.…”

Section: Introductionmentioning

confidence: 99%

Temporal and spatial changes of macrobenthos community in the regions frequently occurring black water aggregation in Lake Taihu

Chen

Zhang

et al. 2018

Sci Rep

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Seasonal survey was performed from August 2015 to May 2016 at 50 sampling sites in Lake Taihu to determine the spatial and temporal changes in macrobenthos community and their relationships with environmental variables. A total of 58 macrobenthos species were collected and identified, including 28 species of annelids, 17 species of molluscs, and 12 species of arthropods. Both the community composition and the dominant species changed temporally and spatially. Correspondingly, the macrobenthos biodiversity differed among regions and seasons. The macrobenthos density decreased with increased sediment depth, which is the first report about the vertical distribution of macrobenthos in Lake Taihu. The majority of benthic animals were located within the sediment depth of 0–5 cm and 5–10 cm, accounting for 39.25% and 24.87% of the total abundance respectively. Redundancy discriminate analysis revealed that the main environmental factors affecting the most contributing macrobenthos species were temperature in summer, transparency, dissolved oxygen and pH in autumn, and water depth and dissolved oxygen in winter. Particularly, salinity and conductivity showed high correlation with the macrobenthos community through the whole sampling period. The investigation reveals the inherent spatiotemporal variation of macrobenthos community, and provides references for the biological assessment of water quality in Lake Taihu.

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Temporal and spatial distribution of macrobenthos communities and their responses to environmental factors in Lake Taihu

Cited by 22 publications

References 19 publications

Correlation of Environmental Factors With Population of Horseshoe Crab (Tachypleus gigas) in Sedati Waters, Sidoarjo District

Correlation of Environmental Factors With Population of Horseshoe Crab (Tachypleus gigas) in Sedati Waters, Sidoarjo District

Macrobenthic Assemblages, Distribution and Functional Guilds from a Freshwater-Dominated Tropical Estuary

Temporal and spatial changes of macrobenthos community in the regions frequently occurring black water aggregation in Lake Taihu

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