Research press release


Nature Climate Change

Inhospitable oceans


海洋の酸性化は、一部の海洋生物に影響を及ぼすことが知られているが、生態系に対する脅威の重大性については、ほとんど解明されていない。この論点に取り組むため、Astrid WittmannとHans-O. Portnerは、5つの動物分類群(サンゴ、棘皮類、軟体類、甲殻類、魚類)の広範な二酸化炭素濃度に対する感受性を評価した。


Ocean acidification can be expected to drive substantial changes in ocean ecosystems during this century, according to a study that assesses the sensitivities of diverse marine animal groups to carbon dioxide concentrations. These findings, published online this week in Nature Climate Change, provide cause for concern about ocean ecosystems and the people dependent upon them.

Ocean acidification is known to affect some marine organisms, but the severity of the threat to ecosystems remains poorly understood. To address this issue, Astrid Wittmann and Hans-O. Portner evaluate the sensitivities of five animal taxa - corals, echinoderms, molluscs, crustaceans and fishes - to a wide range of carbon dioxide concentrations.

The authors found that all of the groups studied were negatively impacted by moderate ocean acidification, albeit in different ways and to different extents. Among the invertebrates, corals, echinoderms and molluscs suffer the most, whereas crustaceans were relatively resistant. Responses of fishes were less clear.The authors conclude that the diversity of responses could lead to profoundly altered ecosystems in the future.

doi: 10.1038/nclimate1982


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