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How will Ocean Acidification Affect Baltic Sea Ecosystems? An Assessment of Plausible Impacts on Key Functional Groups

机译:海洋酸化将如何影响波罗的海生态系统?对关键功能组的可能影响的评估

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摘要

Increasing partial pressure of atmospheric CO2 is causing ocean pH to fall—a process known as ‘ocean acidification’. Scenario modeling suggests that ocean acidification in the Baltic Sea may cause a ≤3 times increase in acidity (reduction of 0.2–0.4 pH units) by the year 2100. The responses of most Baltic Sea organisms to ocean acidification are poorly understood. Available data suggest that most species and ecologically important groups in the Baltic Sea food web (phytoplankton, zooplankton, macrozoobenthos, cod and sprat) will be robust to the expected changes in pH. These conclusions come from (mostly) single-species and single-factor studies. Determining the emergent effects of ocean acidification on the ecosystem from such studies is problematic, yet very few studies have used multiple stressors and/or multiple trophic levels. There is an urgent need for more data from Baltic Sea populations, particularly from environmentally diverse regions and from controlled mesocosm experiments. In the absence of such information it is difficult to envision the likely effects of future ocean acidification on Baltic Sea species and ecosystems.
机译:大气中二氧化碳分压的增加导致海洋pH值下降,这一过程称为“海洋酸化”。方案模拟表明,到2100年,波罗的海的海洋酸化可能导致酸度增加≤3倍(减少0.2-0.4 pH单位)。人们对大多数波罗的海生物对海洋酸化的反应知之甚少。现有数据表明,波罗的海食物网(浮游植物,浮游动物,大型动物,鳕鱼和西鲱)中的大多数物种和具有生态重要意义的群体将对pH的预期变化具有鲁棒性。这些结论来自(大多数)单物种和单因素研究。从这样的研究中确定海洋酸化对生态系统的新兴影响是有问题的,但是很少有研究使用多种压力和/或多种营养水平。迫切需要更多来自波罗的海种群的数据,特别是来自环境多样化地区和受控中观宇宙试验的数据。在缺乏此类信息的情况下,很难预见未来海洋酸化对波罗的海物种和生态系统的可能影响。

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