Intertidal oyster reefs can persist and function in a temperate North American Atlantic estuary
Intertidal oyster reefs can persist and function in a temperate North American Atlantic estuary
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潮间带牡蛎礁可以在温带北美大西洋河口持续存在并发挥作用
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
David Bushek
中科院分区：
文献类型：
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作者：
Jaclyn Taylor;David Bushek
潮间带牡蛎礁在较低的特拉华州湾是短暂的，它通常被认为是牡蛎死亡率由于捕食，疾病和冬季冰冲刷抑制其持久性。2006年6月，不同高度的贝壳袋牡蛎礁建造在下特拉华州湾，美国的潮间带砂滩，以确定在这个温带河口牡蛎礁恢复的潜力。牡蛎定居点，死亡率和招聘珊瑚礁之间进行了比较，作为能动动物的栖息地价值。牡蛎在珊瑚礁建成后不久就开始招募。活动的大型动物群立即开始利用珊瑚礁，增加了相对于邻近沙洲的物种丰富度和丰度。到2006年10月，在牡蛎中观察到的定居后死亡率很低，大多数牡蛎在冬季暴露于冰雪中存活。到2007年4月，移动的沉积物几乎掩埋了最短的珊瑚礁，这一过程可能比捕食、疾病或冰切变更重要地限制了该系统中牡蛎礁的发展。结果表明，该海域具有良好的牡蛎礁开发潜力。
Intertidal oyster reefs in lower Delaware Bay are ephemeral and it is generally assumed that oyster mortality due to predation, disease and winter ice scouring inhibits their persistence. In June 2006, shell-bag oyster reefs of varying height were constructed on the intertidal sand flats in lower Delaware Bay, USA, to determine the potential for oyster reef restoration in this temperate estuary. Oyster settlement, mortality and recruitment were compared among reefs, as was habitat value for motile fauna. Oysters recruited shortly after reefs were constructed. Motile macrofauna immediately began using the reefs, increasing species richness and abundance relative to the adja- cent sand flat. Little post-settlement mortality was observed in oysters by October 2006 and most sur- vived exposure to snow and ice during winter. Shifting sediments nearly buried the shortest reef by April 2007, a process that may be more important in limiting the development of oyster reefs in this system than predation, disease or ice shear. Results indicate that there is good potential for the development of intertidal oyster reefs in this region.