Contaminants disrupt aquatic food webs via decreased consumer efficiency
Contaminants disrupt aquatic food webs via decreased consumer efficiency
复制标题
污染物通过降低消费者效率来破坏水生食物网
DOI：
10.1016/j.scitotenv.2022.160245
复制
发表时间：
2023
影响因子：
9.8
通讯作者：
Fodrie, F. Joel
中科院分区：
文献类型：
--
作者：
Clance, Lauren R.;Ziegler, Shelby L.;Fodrie, F. Joel
环境压力引起的消费者-资源动态变化可能会改变食物网内的能量流动或关键相互作用，并可能在人口、社区和生态系统层面产生级联效应。我们进行了一项荟萃分析，以量化淡水-半咸水和海洋系统中消费者-资源对暴露于人为CO2，重金属，微塑料，石油，农药或药物后消费率变化的方向和幅度。在所有污染物中，接触通常会降低消费率，可能是由于消费者流动性或搜索效率降低。这些对消费者的负面影响似乎超过了共同发生的减少猎物警惕或antipredator行为污染物暴露后。消费量特别是抑制在淡水半咸水系统，消费者与久坐不动的猎物，并为低营养级消费者。这种综合表明，能量流向上的食物网，对更大的-往往是生态和经济上珍贵的-类群可能会抑制水生污染物负荷的增加。
Changes in consumer-resource dynamics due to environmental stressors can alter energy flows or key interactions within food webs, with potential for cascading effects at population, community, and ecosystem levels. We conducted a meta-analysis to quantify the direction and magnitude of changes in consumption rates following exposure of consumer-resource pairs within freshwater-brackish and marine systems to anthropogenic CO2, heavy metals, microplastics, oil, pesticides, or pharmaceuticals. Across all contaminants, exposure generally decreased consumption rates, likely due to reduced consumer mobility or search efficiency. These negative effects on consumers appeared to outweigh co-occurring reductions in prey vigilance or antipredator behaviors following contaminant exposure. Consumption was particularly dampened in freshwater-brackish systems, for consumers with sedentary prey, and for lower-trophic-level consumers. This synthesis indicates that energy flow up the food web, toward larger – often ecologically and economically prized – taxa may be dampened as aquatic contaminant loads increase.