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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Would adding scallop shells (Chlamys islandica) to the sea bottom enhance recruitment of commercial species?
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Would adding scallop shells (Chlamys islandica) to the sea bottom enhance recruitment of commercial species?

机译：在海底增加扇贝贝壳（Chlamys islandica）会增强对商业物种的招募吗？

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摘要

We examined the impact of adding scallop shells (byproduct of the fisheries) to sandy and rocky sea bottoms in the northern Gulf of St. Lawrence. The effect of adding shells was greatest on sandy bottoms where species richness increased 3.7-fold and species diversity 1.9-fold. The increase in most species was due to immigration rather than new settlement. Trials examining the effect of different densities of shells in plots of the same size (4 m~2) showed that species diversity increased rapidly with shell abundance and levelled off when shells covered half of the bottom, whereas species richness only levelled off when shells almost completely covered the bottom. Trials examining the effect of the size of the shell patches (shell density being kept constant) showed that species diversity was already maximal in 1-m~2 plots, whereas species richness only attained a plateau at 4m~2. Our small-scale trials indicate that the addition of shells would have a positive impact, increasing numerous invertebrates, including commercial species (scallops, whelks and urchins).
机译：我们研究了在圣劳伦斯湾北部沙质岩石海底添加扇贝贝壳（渔业副产品）的影响。添加贝壳对沙质底部的影响最大，那里的物种丰富度增加了3.7倍，物种多样性增加了1.9倍。大多数物种的增加是由于移民而不是新的定居。在相同大小（4 m〜2）的样地中，研究了不同密度的贝壳的影响的试验表明，随着贝壳的丰度，物种多样性迅速增加，当贝壳覆盖底部的一半时，物种多样性趋于稳定，而当贝壳几乎变成一半时，物种丰富度才趋于稳定完全覆盖了底部。考察了壳斑大小的影响（壳密度保持恒定）的试验表明，在1-m〜2样地中物种多样性已经达到最大，而物种丰富度仅在4m〜2时达到了平稳状态。我们的小规模试验表明，添加贝壳会产生积极影响，增加许多无脊椎动物，包括商业物种（扇贝，海螺和海胆）。

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