Habitat values for artificial oyster (Crassostrea ariakensis) reefs compared with natural shallow-water habitats in Changjiang River estuary
Habitat values for artificial oyster (Crassostrea ariakensis) reefs compared with natural shallow-water habitats in Changjiang River estuary
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长江口人工牡蛎礁与自然浅水生境的生境价值比较
DOI：
10.1007/s00343-013-2319-4
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发表时间：
2013-09-01
影响因子：
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通讯作者：
An Chuanguang
中科院分区：
文献类型：
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作者：
Quan Weimin;Zheng Lin;An Chuanguang
牡蛎礁具有与植被生境相当的复杂三维结构，并可能在河口环境中提供类似的功能。然而，很少有研究将牡蛎礁与邻近的天然浅水栖息地进行比较。本文描述了长江口人工牡蛎礁及其邻近天然河口浅水生境（盐沼、潮间泥滩和潮下软底）中大型底栖动物的群落结构。栖息地间大型底栖动物群落的平均总密度和生物量、Margalef物种丰富度、Pielou均匀度和Shannon-Weaver生物多样性指数差异显著。牡蛎礁底栖大型无脊椎动物的密度和生物量显著高于其他三种生境。排序图显示出明显的分离底栖大型无脊椎动物群落之间的四种生境类型。研究结果表明，人工牡蛎礁支持了独特的底栖生物群落，在复杂的河口生境中发挥着重要作用，为生物多样性提供了重要的食物来源。此外，研究结果表明，牡蛎礁已经成功恢复。
Oyster reefs have an equivalent, complex 3-dimensional structure to vegetated habitats and may provide similar functions in estuarine environments. Nevertheless, few studies have compared oyster reefs with adjacent natural shallow-water habitats. Here the resident benthic macroinvertebrate communities in an artificial oyster (Crassostrea ariakensis) reef and in adjacent natural estuarine shallow-water habitats (salt marsh, intertidal mudflat, and subtidal soft bottom) in the Changjiang (Yangtze) River estuary were described. The mean total densities and biomass, Margalef’s species richness, Pielou’s evenness and Shannon-Weaver biodiversity indices of the resident benthic macroinvertebrate communities differed significantly among the habitats. Significantly higher densities and biomass of benthic macroinvertebrates occurred in the oyster reef compared with the other three habitats. Ordination plots showed a clear separation in benthic macroinvertebrate communities among the four habitat types. The results demonstrated that the artificial oyster reef supported distinct and unique benthic communities, playing an important role in the complex estuarine habitat by supplying prey resources and contributing to biodiversity. In addition, the results suggested that the oyster reef had been restored successfully.