Climate change tightens a metabolic constraint on marine habitats

Curtis Deutsch, Aaron Ferrel, Brad Seibel, Hans Otto Pörtner, Raymond B. Huey

Research output: Contribution to journalArticlepeer-review

304 Scopus citations

Abstract

Warming of the oceans and consequent loss of dissolved oxygen (O2) will alter marine ecosystems, but a mechanistic framework to predict the impact of multiple stressors on viable habitat is lacking. Here, we integrate physiological, climatic, and biogeographic data to calibrate and then map a key metabolic index-the ratio of O2 supply to resting metabolic O2 demand-across geographic ranges of several marine ectotherms. These species differ in thermal and hypoxic tolerances, but their contemporary distributions are all bounded at the equatorward edge by a minimum metabolic index of ∼2 to 5, indicative of a critical energetic requirement for organismal activity. The combined effects of warming and O2 loss this century are projected to reduce the upper ocean's metabolic index by ∼20% globally and by ∼50% in northern high-latitude regions, forcing poleward and vertical contraction of metabolically viable habitats and species ranges.

Original languageEnglish (US)
Pages (from-to)1132-1135
Number of pages4
JournalScience
Volume348
Issue number6239
DOIs
StatePublished - Jun 5 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General

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