Oyster and Associated Benthic Macrofaunal Development on a Created Intertidal Oyster (Crassostrea Ariakensis) Reef in the Yangtze River Estuary, China
Oyster and Associated Benthic Macrofaunal Development on a Created Intertidal Oyster (Crassostrea Ariakensis) Reef in the Yangtze River Estuary, China
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DOI：
10.2983/035.031.0302
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发表时间：
2012-09
期刊：
影响因子：
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通讯作者：
W. Quan;A. Humphries;Xin-qiang Shen;Ya-qu Chen
中科院分区：
文献类型：
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作者：
W. Quan;A. Humphries;Xin-qiang Shen;Ya-qu Chen
摘要 牡蛎及其形成的珊瑚礁因其可以提供广泛的生态系统服务而日益受到认可和恢复。然而，令人惊讶的是，很少有人致力于记录此类修复或创建项目随时间推移的成果，或比较不同地区的项目。在这项研究中，我们研究了中国长江口潮间带牡蛎 (Crassostrea ariakensis) 礁在形成后 5 年沿盐度和暴露度（礁体垂直位置）梯度上的牡蛎 (Crassostrea ariakensis) 和底栖大型动物的发育情况。珊瑚礁形成三年后，成功建立了可持续的牡蛎种群，上市规格的牡蛎占珊瑚礁总覆盖面积的 24% 以上，平均丰度为 95-225 只成年牡蛎/平方米。大型底栖动物的相关群落指标（物种丰富度、丰度和生物量）在 5 年期间总体上呈现出随着珊瑚礁发育而增加的趋势；然而，甲壳类动物和多毛类动物与牡蛎发育的相关性最强。藤壶（Balanus alhicostatus）丰度和生物量与牡蛎和珊瑚礁发育呈负相关。盐度和暴露经常相互作用，表明沿礁石不同位置的发育或盐度梯度取决于沿礁石的垂直位置或低潮时的暴露程度。这个珊瑚礁上的牡蛎发育似乎处于自我维持的水平，并为相关的大型底栖动物提供了与全球其他地区相当的栖息地。
ABSTRACT Oysters and the reefs they build are being recognized and restored increasingly for the broad suite of ecosystem services they can provide. However, surprisingly little effort has been devoted to documenting the outcomes of such restoration or creation projects through time, or to comparing projects from different regions. In this study, we examined the oyster (Crassostrea ariakensis) and benthic macrofaunal development on a created intertidal oyster (Crassostrea ariakensis) reef along a salinity and exposure (vertical position on reef) gradient 5 y after creation in the Yangtze River estuary, China. Three years after reef creation, sustainable oyster populations were established successfully and market-size oysters accounted for more than 24% of the total reef cover, with mean abundances ranging from 95–225 adult oysters/m2. Associated community metrics (species richness, abundance. and biomass) of benthic macrofauna showed generally increasing trends with reef development during the 5-y period; however, crustaceans and polychaetes were correlated most strongly with oyster development. Barnacle (Balanus alhicostatus) abundance and biomass were correlated negatively with oyster and reef development. Salinity and exposure frequently interacted, suggesting that development at different places along the reef or salinity gradient was dependent on the vertical position along the reef or the degree of exposure at low tide. Oyster development on this created reef appears to be at a self-sustaining level and provides habitat for associated benthic macrofauna comparable with other regions globally.