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Abrupt declines in marine phytoplankton production driven by warming and biodiversity loss in a microcosm experiment.
Ecology Letters ( IF 7.6 ) Pub Date : 2020-01-11 , DOI: 10.1111/ele.13444 Elvire Bestion 1, 2 , Samuel Barton 1 , Francisca C García 1 , Ruth Warfield 1 , Gabriel Yvon-Durocher 1
Ecology Letters ( IF 7.6 ) Pub Date : 2020-01-11 , DOI: 10.1111/ele.13444 Elvire Bestion 1, 2 , Samuel Barton 1 , Francisca C García 1 , Ruth Warfield 1 , Gabriel Yvon-Durocher 1
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Rising sea surface temperatures are expected to lead to the loss of phytoplankton biodiversity. However, we currently understand very little about the interactions between warming, loss of phytoplankton diversity and its impact on the oceans' primary production. We experimentally manipulated the species richness of marine phytoplankton communities under a range of warming scenarios, and found that ecosystem production declined more abruptly with species loss in communities exposed to higher temperatures. Species contributing positively to ecosystem production in the warmed treatments were those that had the highest optimal temperatures for photosynthesis, implying that the synergistic impacts of warming and biodiversity loss on ecosystem functioning were mediated by thermal trait variability. As species were lost from the communities, the probability of taxa remaining that could tolerate warming diminished, resulting in abrupt declines in ecosystem production. Our results highlight the potential for synergistic effects of warming and biodiversity loss on marine primary production.
中文翻译：
在缩影实验中，由于变暖和生物多样性丧失导致海洋浮游植物产量突然下降。
预计海平面温度上升将导致浮游植物生物多样性的丧失。但是，我们目前对变暖，浮游植物多样性丧失及其对海洋初级生产的影响之间的相互作用了解甚少。我们在一系列变暖情况下通过实验操作了海洋浮游植物群落的物种丰富度，发现在暴露于较高温度的群落中，生态系统产量急剧下降，物种丧失。在温热处理中对生态系统生产产生正面影响的物种是光合作用的最佳最佳温度最高的物种，这表明温度升高和生物多样性丧失对生态系统功能的协同影响是由热性状可变性介导的。随着物种从社区流失，剩余的可忍受变暖的分类单元的可能性降低，从而导致生态系统产量突然下降。我们的结果强调了变暖和生物多样性丧失对海洋初级生产产生协同效应的潜力。
更新日期：2020-01-13
中文翻译：
在缩影实验中，由于变暖和生物多样性丧失导致海洋浮游植物产量突然下降。
预计海平面温度上升将导致浮游植物生物多样性的丧失。但是，我们目前对变暖，浮游植物多样性丧失及其对海洋初级生产的影响之间的相互作用了解甚少。我们在一系列变暖情况下通过实验操作了海洋浮游植物群落的物种丰富度，发现在暴露于较高温度的群落中，生态系统产量急剧下降，物种丧失。在温热处理中对生态系统生产产生正面影响的物种是光合作用的最佳最佳温度最高的物种，这表明温度升高和生物多样性丧失对生态系统功能的协同影响是由热性状可变性介导的。随着物种从社区流失，剩余的可忍受变暖的分类单元的可能性降低，从而导致生态系统产量突然下降。我们的结果强调了变暖和生物多样性丧失对海洋初级生产产生协同效应的潜力。
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