Aquatic Eco-Health Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, Xiamen, 361021, China.
University of Chinese Academy of Sciences, Beijing, 100049, China.
Environ Sci Pollut Res Int. 2022 Sep;29(44):66389-66404. doi: 10.1007/s11356-022-20471-z. Epub 2022 May 2.
Macroinvertebrate community in the intertidal setup plays an important role in coastal ecosystem functions and biogeochemical cycle. However, different land use pattern may influence on their community structure, diversity, and composition in the coastal ecosystems. Using Van-Veen grab sampler, 60 sediment samples were seasonally collected from mangroves-dominated, aquaculture-dominated, and anthropogenically affected area in the lower intertidal zone of the Kohelia channel of Bangladesh, the Northern Bay of Bengal. We have tasted the variation in sediment properties across three land-use types in this intertidal habitat. To understand the patterns of benthic macroinvertebrate distribution, a neutral community model was applied. Our results showed that community composition and biodiversity of the benthic macroinvertebrate communities varied significantly between mangrove-dominated area with anthropogenically affected areas among the four seasons. The neutral community model revealed that community assembly of benthic macroinvertebrates in the lower intertidal habitats is structured by stochastic processes while sediment properties have significant influence on species distribution and interactions. Results suggested that land-use changes altered sediment properties and could change the diversity and distribution of the macroinvertebrate communities in the lower intertidal habitats.
潮间带大型无脊椎动物群落对沿海生态系统功能和生物地球化学循环起着重要作用。然而，不同的土地利用方式可能会影响沿海生态系统中它们的群落结构、多样性和组成。本研究使用 Van-Veen 抓斗采样器，在孟加拉国北部湾的 Kohelia 海峡的潮间带下部，从红树林占主导地位、水产养殖占主导地位和人为影响的区域中，季节性采集了 60 个沉积物样本。我们已经在这个潮间带生境中尝测试验了三种土地利用类型之间的沉积物特性变化。为了了解底栖大型无脊椎动物分布的模式，应用了中性群落模型。我们的结果表明，在四个季节中，底栖大型无脊椎动物群落的组成和生物多样性在红树林主导区与人为影响区之间存在显著差异。中性群落模型表明，潮间带下部生境中底栖大型无脊椎动物的群落组装是由随机过程控制的，而沉积物特性对物种分布和相互作用有显著影响。结果表明，土地利用变化改变了沉积物特性，并可能改变潮间带下部生境中大型无脊椎动物群落的多样性和分布。
