Impacts of hypoxic events surpass those of future ocean warming and acidification
Type
ArticleAuthors
Sampaio, Eduardo
Santos, Catarina

Rosa, Inês C.
Ferreira, Verónica
Pörtner, Hans-Otto

Duarte, Carlos M.

Levin, Lisa A.

Rosa, Rui

KAUST Department
Biological and Environmental Science and Engineering (BESE) DivisionMarine Science Program
Red Sea Research Center (RSRC)
Date
2021-01-11Online Publication Date
2021-01-11Print Publication Date
2021-03Embargo End Date
2021-07-11Submitted Date
2020-02-12Permanent link to this record
http://hdl.handle.net/10754/666876
Metadata
Show full item recordAbstract
Over the past decades, three major challenges to marine life have emerged as a consequence of anthropogenic emissions: ocean warming, acidification and oxygen loss. While most experimental research has targeted the first two stressors, the last remains comparatively neglected. Here, we implemented sequential hierarchical mixed-model meta-analyses (721 control–treatment comparisons) to compare the impacts of oxygen conditions associated with the current and continuously intensifying hypoxic events (1–3.5 O2 mg l−1) with those experimentally yielded by ocean warming (+4 °C) and acidification (−0.4 units) conditions on the basis of IPCC projections (RCP 8.5) for 2100. In contrast to warming and acidification, hypoxic events elicited consistent negative effects relative to control biological performance—survival (–33%), abundance (–65%), development (–51%), metabolism (–33%), growth (–24%) and reproduction (–39%)—across the taxonomic groups (mollusks, crustaceans and fish), ontogenetic stages and climate regions studied. Our findings call for a refocus of global change experimental studies, integrating oxygen concentration drivers as a key factor of ocean change. Given potential combined effects, multistressor designs including gradual and extreme changes are further warranted to fully disclose the future impacts of ocean oxygen loss, warming and acidification.Citation
Sampaio, E., Santos, C., Rosa, I. C., Ferreira, V., Pörtner, H.-O., Duarte, C. M., … Rosa, R. (2021). Impacts of hypoxic events surpass those of future ocean warming and acidification. Nature Ecology & Evolution. doi:10.1038/s41559-020-01370-3Sponsors
This work was supported by the Fundação para a Ciência e Tecnologia (FCT), through the strategic project granted to MARE strategic project (UID/MAR/04292/2019), the PhD grants attributed to E.S. (SFRH/BD/131771/2017), C.S. (SRFH/SFRH/BD/117890/2016) and V.F. (CEECIND/02484/2018), financed by national and community funds from FCT and the European Social Fund (ESF), through the Human Capital Operating Programme and Regional Operation Programme (Lisboa 2020). Furthermore, we acknowledge the DFG Centre of Excellence 2117 ‘Centre for the Advanced Study of Collective Behaviour’ (ID: 422037984), L.A.L. was supported by NSF OCE1829623 and NOAA CHRP award NA18NOS4780172, and H.-O.P. was supported by PACES programme of the AWI and the DFG (German Research Council Po 278 16-1 and -2) Research group Tersane.Publisher
Springer NatureJournal
Nature Ecology & EvolutionAdditional Links
http://www.nature.com/articles/s41559-020-01370-3ae974a485f413a2113503eed53cd6c53
10.1038/s41559-020-01370-3