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Marine animal behaviour in a high CO₂ ocean

Clements, Jeff C. ; Hunt, Heather L.

Marine ecology. Progress series (Halstenbek), 2015-09, Vol.536, p.259-279 [Periódico revisado por pares]

Inter-Research

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  • Título:
    Marine animal behaviour in a high CO₂ ocean
  • Autor: Clements, Jeff C. ; Hunt, Heather L.
  • Assuntos: REVIEW
  • É parte de: Marine ecology. Progress series (Halstenbek), 2015-09, Vol.536, p.259-279
  • Descrição: Recently, the effects of ocean acidification (OA) on marine animal behaviour have garnered considerable attention, as they can impact biological interactions and, in turn, eco system structure and functioning. We reviewed current published literature on OA and marine behaviour and synthesize current understanding of how a high CO₂ ocean may impact animal behaviour, elucidate critical unknowns, and provide suggestions for future research. Although studies have focused equally on vertebrates and invertebrates, vertebrate studies have primarily focused on coral reef fishes, in contrast to the broader diversity of invertebrate taxa studied. A quantitative synthesis of the direction and magnitude of change in behaviours from current conditions under OA scenarios suggests primarily negative impacts that vary depending on species, ecosystem, and behaviour. The interactive effects of co-occurring environmental parameters with increasing CO₂ elicit effects different from those observed under elevated CO₂ alone. Although 12% of studies have incorporated multiple factors, only one study has examined the effects of carbonate system variability on the behaviour of a marine animal. Altered GABAA receptor functioning under elevated CO₂ appears responsible for many behavioural responses; however, this mechanism is unlikely to be universal. We recommend a new focus on determining the effects of elevated CO₂ on marine animal behaviour in the context of multiple environmental drivers and future carbonate system variability, and the mechanisms governing the association between acid-base regulation and GABAA receptor functioning. This knowledge could explain observed species-specificity in behavioural responses to OA and lend to a unifying theory of OA effects on marine animal behaviour.
  • Editor: Inter-Research
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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