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Competitive dominance among sessile marine organisms in a high Arctic boulder community

机译：北极巨石群落中无柄海洋生物之间的竞争优势

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摘要

In most hard substrate environments, space is a limiting resource for sessile organisms. Competition for space is often high and is a structuring force within the community. In the Beaufort Sea's Boulder Patch, crustose coralline red algae are major space occupiers. This research determined if coralline algae were competitively dominant over other sessile organisms. To test this hypothesis, overgrowth was documented in terms of "winners" and "losers" on the contact borders between different species. Crustose corallines occurred in over 80% of the observed interactions but were only winners in approximately half of them. Most frequently, bry-ozoans, tunicates, and sponges were superior competitors over crustose corallines, while at the same time these invertebrate groups were among the least abundant space occupiers.
机译：在大多数坚硬的底物环境中，空间是固着生物的限制资源。空间竞争通常是激烈的，并且是社区内部的结构力量。在波弗特海的博尔德斑块中，地壳珊瑚红藻是主要的太空人。这项研究确定了珊瑚藻藻是否比其他无柄生物具有竞争优势。为了检验这一假设，以不同物种之间接触边界上的“获胜者”和“失败者”来记录过度生长。观察到的相互作用中有80％以上为硬皮珊瑚线，但其中只有一半是赢家。最常见的是，变卵虫，被膜和海绵比硬壳珊瑚虫更优，而同时这些无脊椎动物则是空间占用最少的动物。

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