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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Consumption rates vary based on the presence and type of oyster structure: A seasonal and latitudinal comparison
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Consumption rates vary based on the presence and type of oyster structure: A seasonal and latitudinal comparison

机译：消费利率根据牡蛎结构的存在和类型而有所不同：季节性和纬度比较

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As oyster reefs continue to decline worldwide, interest has turned to restoration and aquaculture as ways to sustain the services derived from these ecologically and economically valuable habitats. While biogenic oyster reefs support a variety of ecological functions, it remains unclear whether aquaculture and its associated infrastructure can provide equivalent levels of functioning. Here, we compare consumption rates by fish and invertebrate predators, a key indicator of energy transfer between trophic levels, between reef and aquaculture habitats for the Eastern oyster (Crassostrea virginica) in the Western Atlantic. We deployed a standardized dried squid prey item Squidpops') in three different structured settings: biogenic oyster reefs, on-bottom aquaculture, and off-bottom aquaculture. For each habitat treatment, we also implemented an adjacent control in nearby bare (unstructured) sediment. These assays were repeated across three seasons at twelve locations spanning 900 km of coastline. We found that consumption rates were contingent on the presence and type of structure: they were highest near off-bottom floating bags, and the difference between structured habitats and unstructured controls was also greatest for this treatment. Moreover, at large temporal and spatial scales, consumption rates increased with increasing temperature, and independently declined with increasing latitude. Our study revealed that certain types of aquaculture support comparable or greater consumption rates than natural reefs, suggesting an important role for this novel structured habitat in maintaining coastal food webs.
机译：由于牡蛎珊瑚礁在全球范围内继续下降，兴趣已经转向恢复和水产养殖作为维持这些生态和经济上有价值的栖息地的服务的方法。虽然生物牡蛎珊瑚礁支持各种生态功能，但仍然不清楚水产养殖及其相关基础设施是否可以提供等效的功能水平。在这里，我们通过鱼类和无脊椎动物捕食者进行比较消费率，这是在西部大西洋西部东牡蛎（Crassostrea Virginica）之间的珊瑚礁和水产养殖之间的能量转移的关键指标。我们在三种不同的结构设置中部署了标准化的干鱿鱼猎物项目Squidpops：生物牡蛎礁，底部水产养殖和底部水产养殖。对于每个栖息地治疗，我们还在附近的裸露（非结构化）沉积物中实施了相邻的控制。在跨越900公里的海岸线跨越十二个地点的三个赛季中重复这些测定。我们发现消费率取决于结构的存在和类型：它们在近底浮袋附近最高，并且结构栖息地和非结构化控制之间的差异也是最大的对这种治疗。此外，在大时间和空间尺度下，消耗率随着温度的增加而增加，并且随着纬度的增加而独立下降。我们的研究表明，某些类型的水产养殖支持比天然珊瑚礁相当或更大的消费率，这表明这部小型结构栖息地在维护沿海食品网站方面的重要作用。

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