Ecological drivers of parrotfish coral predation vary across spatial scales

IF 2.2 3区 环境科学与生态学 Q2 ECOLOGY Marine Ecology Progress Series Pub Date : 2024-07-25 DOI:10.3354/meps14633
Hannah S. Rempel, Kelly N. Bodwin, Deron E. Burkepile, Thomas C. Adam, Andrew H. Altieri, Emma M. Barton, Roxanne-Liana Francisca, Maurice C. Goodman, Rachael J. Lamore, Marilla Lippert, Marietta Marroquín, Tara C. O’Rourke, Peter D. VanderBloomer, Benjamin I. Ruttenberg
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Abstract

ABSTRACT: Parrotfishes (Labridae: Scarini) are widely recognized for their important functional role in reducing coral-algae competition by grazing algae, yet some species are also coral predators (corallivores) and thereby have direct negative impacts on corals they prey upon. To better understand the ecological drivers of parrotfish corallivory intensity, we compared patterns of relative predation scar size and abundance across spatial scales from individual coral colonies (<1 to several meters in size), to reefs within islands (1 to 10s of km), to 4 regions across the Greater Caribbean (100s to 1000s of km) including Panamá, Florida, St. Croix, and Bonaire. Across reef sites, there was a positive correlation of both parrotfish density and biomass with the relative coral area preyed upon, but not predation scar abundance. While there was no apparent site-level effect of coral cover on corallivory intensity, we found that the abundance of colonies preyed upon was positively correlated with both coral diversity and the proportional cover of frequently targeted coral taxa within localized 30 m2 reef areas. At the scale of individual coral colonies, we found that while numerous coral taxa were preyed upon, corallivory was concentrated on a few species across regions, such as Orbicella spp., Porites spp., and Stephanocoenia intersepta. Our findings suggest that while increased parrotfish densities may result in an increased coral area preyed upon across reefs, corallivory intensity within reefs may decrease in response to declines in the cover of frequently targeted coral taxa and overall coral diversity.

Spanish and Papiamentu versions of the abstract are provided in the Supplement at www.int-res.com/articles/suppl/m740p145_supp.pdf
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鹦嘴鱼捕食珊瑚的生态驱动因素因空间尺度而异
摘要:鹦嘴鱼(唇形纲:鲷科)被广泛认为在通过捕食藻类减少珊瑚-藻类竞争方面发挥着重要的功能作用,但有些物种同时也是珊瑚的捕食者(食珊瑚者),因此对它们捕食的珊瑚产生了直接的负面影响。为了更好地了解鹦嘴鱼珊瑚食肉强度的生态驱动因素,我们比较了不同空间尺度的相对捕食痕大小和丰度模式,从单个珊瑚群(1 到数米大小),到岛屿内的珊瑚礁(1 到 10 几公里),再到整个大加勒比海的 4 个区域(100 到 1000 几公里),包括巴拿马、佛罗里达、圣克罗伊和博内尔岛。在所有珊瑚礁地点,鹦嘴鱼的密度和生物量与被捕食珊瑚的相对面积呈正相关,但与捕食痕的丰度无关。虽然珊瑚覆盖率对珊瑚捕食强度没有明显的地点效应,但我们发现,在局部 30 平方米的珊瑚礁区域内,被捕食的珊瑚群丰度与珊瑚多样性和经常被捕食的珊瑚类群的覆盖率成正相关。在单个珊瑚群的尺度上,我们发现虽然有许多珊瑚类群被捕食,但珊瑚食性在不同区域集中于少数几个物种,如 Orbicella spp.、Porites spp.和 Stephanocoenia intersepta。我们的研究结果表明,虽然鹦嘴鱼密度的增加可能会导致各珊瑚礁被捕食珊瑚面积的增加,但珊瑚礁内的珊瑚食肉强度可能会随着经常被捕食的珊瑚类群覆盖率和整体珊瑚多样性的下降而降低。论文摘要的西班牙文和帕皮阿门图文版本见补编,网址为 www.int-res.com/articles/suppl/m740p145_supp.pdf。
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来源期刊
Marine Ecology Progress Series
Marine Ecology Progress Series 环境科学-海洋学
CiteScore
5.30
自引率
8.00%
发文量
238
审稿时长
3 months
期刊介绍: The leading journal in its field, MEPS covers all aspects of marine ecology, fundamental and applied. Topics covered include microbiology, botany, zoology, ecosystem research, biological oceanography, ecological aspects of fisheries and aquaculture, pollution, environmental protection, conservation, and resource management.
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