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首页> 外文期刊>Marine ecology progress series >Impacts of macroalgal competition and parrotfish predation on the growth of a common bioeroding sponge
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Impacts of macroalgal competition and parrotfish predation on the growth of a common bioeroding sponge

机译：大型藻类竞争和鹦嘴鱼捕食对普通生物侵蚀海绵生长的影响

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摘要

Clionaids, an abundant group of bioeroding sponges, are important competitors of corals, but their interactions with other major taxa are poorly understood. This study examined the relative effect of predation and macroalgal competition on the growth of Cliona tenuis at Glover's Reef Atoll, Belize. A field experiment was designed to isolate the importance of each factor and its interactions, by means of exclusion cages to assess the effects of fish predators, and algal trans plantation to assess the effects of macroalgal competition (Lobophora variegata), over 286 d. To obtain complementary data on the net outcome of predation and competition in situ, predation intensity and the competitive effects on C. tenuis of 5 different competitors were monitored in the field. Competition with macroalgae significantly reduced the size of the sponge by 38 ± 11 % (SE). Despite a high predation rate (1 bite 100 cm~(-2) h~(-1)), no effect of the interaction of predation with macroalgal competition was detected. The in situ observations found that L. variegata was the strongest competitor limiting the growth of C. tenuis. Overgrowth of corals by clionaids and macroalgae continues to be a matter of concern, but our results suggest that the antagonistic competition between sponges and algae might weaken their potential combined effect on corals.
机译：Clionaids是大量的生物侵蚀性海绵，是珊瑚的重要竞争者，但人们对它们与其他主要分类单元的相互作用了解甚少。这项研究探讨了掠夺和大型藻类竞争对伯利兹格洛弗礁礁环礁中小鳞翅目的增长的相对影响。设计了一个野外实验，通过隔离网箱评估鱼类捕食者的影响，并通过藻类移栽评估大型藻类竞争（杂色狼蛛）的作用，隔离每个因素及其相互作用的重要性，持续时间超过286天。为了获得有关捕食和就地竞争的净结果的补充数据，在野外监测了捕食强度和对5个不同竞争者对中华绒螯蟹的竞争影响。与大型藻类的竞争使海绵的尺寸显着减小了38±11％（SE）。尽管捕食率很高（1咬合100 cm〜（-2）h〜（-1）），但没有发现捕食与大型藻类竞争的相互作用。原位观察发现，杂色乳酸杆菌是限制蔓延梭状芽胞杆菌生长的最强竞争者。潮汐类生物和大型藻类对珊瑚的过度生长仍然是一个令人关注的问题，但我们的结果表明，海绵和藻类之间的拮抗竞争可能会削弱它们对珊瑚的潜在综合作用。

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  • 来源
    《Marine ecology progress series》 |2012年第10期|p.133-142|共10页
  • 作者

    Manuel Gonzalez-Rivero; Renata Ferrari; Christine H. L. Schonberg; Peter J. Mumby;

  • 作者单位

    College of Life and Environmental Sciences, University of Exeter, EX4 4PS, UK,Marine Spatial Ecology Laboratory, School of Biological Sciences & ARC Centre of Excellence for Reef Studies,University of Queensland, St. Lucia, Brisbane, Queensland 4072, Australia;

    Marine Spatial Ecology Laboratory, School of Biological Sciences & ARC Centre of Excellence for Reef Studies,University of Queensland, St. Lucia, Brisbane, Queensland 4072, Australia;

    Australian Institute of Marine Science, Oceans Institute at The University of Western Australia, 39 Fairway, Crawley,Western Australia 6009, Australia;

    Marine Spatial Ecology Laboratory, School of Biological Sciences & ARC Centre of Excellence for Reef Studies,University of Queensland, St. Lucia, Brisbane, Queensland 4072, Australia,College of Life and Environmental Sciences, University of Exeter, EX4 4PS, UK;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    porifera; cliona tenuis; lobophora variegata; competition; predation; caribbean; coral reefs;

    机译：rif cliona tenuis;杂叶竞争;掠夺加勒比珊瑚礁;

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