Worldwide, rising ocean temperatures are causing declines and range shifts in marine species. The direct effects of climate change on the biology of marine organisms are often well documented; yet, knowledge on the indirect effects, particularly through trophic interactions, is largely lacking. We provide evidence of ocean warming decoupling critical trophic interactions supporting a commercially important mollusc in a climate change hotspot. Dietary assessments of the Australian blacklip abalone (Haliotis rubra) indicate primary dependency on a widespread macroalgal species (Phyllospora comosa) which we show to be in state of decline due to ocean warming, resulting in abalone biomass reductions. Niche models suggest further declines in P. comosa over the coming decades and ongoing risks to H. rubra. This study highlights the importance of studies from climate change hotspots and understanding the interplay between climate and trophic interactions when determining the likely response of marine species to environmental changes.

中文翻译：

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海洋变暖威胁到支持气候变化热点商业渔业的关键营养相互作用

在世界范围内，不断上升的海洋温度正在导致海洋物种的减少和分布范围的变化。气候变化对海洋生物生物学的直接影响往往有据可查；然而，在很大程度上缺乏关于间接影响的知识，特别是通过营养相互作用。我们提供了海洋变暖与支持气候变化热点中具有商业重要性的软体动物的关键营养相互作用脱钩的证据。澳大利亚黑唇鲍 ( Haliotis rubra ) 的膳食评估表明，它们主要依赖于广泛分布的大型藻类 ( Phyllospora comosa )，我们发现该物种由于海洋变暖而处于衰退状态，导致鲍鱼生物量减少。利基模型表明P进一步下降。 科摩萨在未来几十年和H 的持续风险。 鲁布拉。这项研究强调了从气候变化热点进行研究的重要性，并在确定海洋物种对环境变化的可能反应时了解气候和营养相互作用之间的相互作用。