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首页> 外文期刊>International journal of ecohydrology and hydrobiology >Key factors of the studies on benthic macroinvertebrate in coastal wetlands: Methods and biodiversity
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Key factors of the studies on benthic macroinvertebrate in coastal wetlands: Methods and biodiversity

机译：沿海湿地底栖大型脊椎动物研究的关键因素：方法与生物多样性

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This study aims to explore the biodiversity and influencing factors of macroinvertebrates in coastal wetlands at regional scale as well as the experimental sampling and analytical methods. Information from published scientific articles was compiled to analyze the habitat types, environmental variables, dominant species, sampler, mesh types, fixative solutions and analytical methods of macroinvertebrates in 104 coastal wetlands. Seven hotspots area have been identified in coastal wetlands. The low repetition rate of dominant species in the most studied area (estuary, intertidal zone and mangrove) indicated that environmental factors played decisive role in biodiversity. The species richness has significant correlation with temperature, pH, DO and BOD. Both biological indices and analysis methods have been employed successfully to analyze the relationship between the biodiversity of coastal benthic macroinvertebrate and environmental factors quantitatively and qualitatively. The selection of sampler (tube sampler, quadrat sampler and grab sampler) indicates the difference in the environment conditions at the study site, which is also affected by cost and efficiency. The mesh sieves (0.5 mm, 1.0 mm and others), which affected the workload of soil screening and the abundance of macroinvertebrates, suggested that researchers had different understandings of macroinvertebrate. While the selection of fixative solution such as alcohol and formalin should be also considered to meet the experimental demands because of their shortcomings (decolorization and acidity). In conclusion, each step from field to desk work affects the accuracy of benthos research. This study provides coastal ecologist with more clear experimental details. (C) 2020 European Regional Centre for Ecohydrology of the Polish Academy of Sciences. Published by Elsevier B.V. All rights reserved.
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