Mechanisms for copepod resting egg accumulation in seagrass sediments
Mechanisms for copepod resting egg accumulation in seagrass sediments
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DOI：
10.4319/lo.2011.56.1.0363
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发表时间：
2011-01
影响因子：
4.5
通讯作者：
Lindsay P. Scheef;N. Marcus
中科院分区：
文献类型：
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作者：
Lindsay P. Scheef;N. Marcus
我们确定了几种机制，通过海草的存在可以提高佛罗里达州浅海礁上桡足类动物卵的保留和底栖动物丰度：(1)底栖大型动物在海草斑块中比在裸露的沉积物中更丰富，这些动物的生物扰动可能通过埋藏有助于卵的保留；(2)海草冠层的存在抑制了细颗粒的再悬浮，从而促进了虫卵的积累；(3)夏季温暖月份海草斑块沉积物表面持续的低氧条件通过抑制新卵的孵化来促进卵潴留。了解这些因素如何影响其他地区海草床中桡足类卵的积累，可以为了解海草的存在如何影响当地桡足类种群提供有价值的见解。
We identify several mechanisms by which seagrass presence can enhance the retention and benthic abundance of copepod eggs on a shallow reef in Florida: (1) benthic macrofauna are more abundant in seagrass patches than in bare sediment and bioturbation by these animals may contribute to egg retention through burial; (2) the physical presence of the seagrass canopy inhibits the resuspension of fine particles and thereby promotes egg accumulation; (3) the persistent low oxygen conditions at the sediment surface sustained in seagrass patches during warm summer months promote egg retention by inhibiting the hatch of newly settled eggs. Understanding how these factors contribute to copepod egg accumulation in the seagrass beds of other areas could give valuable insights into how seagrass presence may influence local copepod populations.