[OANNES Foro] Impacts of historical warming on marine fisheries production

[Mario Cabrejos]

Science  01 Mar 2019:
Vol. 363, Issue 6430, pp. 979-983
DOI: 10.1126/science.aau1758


 


Impacts of historical warming on marine fisheries production


1.    Christopher M. Free
<http://science.sciencemag.org/content/363/6430/979?utm_campaign=toc_sci-mag
_2019-02-28&et_rid=34815706&et_cid=2691681#aff-1> 1,
<http://science.sciencemag.org/content/363/6430/979?utm_campaign=toc_sci-mag
_2019-02-28&et_rid=34815706&et_cid=2691681#aff-2> 2,
<http://science.sciencemag.org/content/363/6430/979?utm_campaign=toc_sci-mag
_2019-02-28&et_rid=34815706&et_cid=2691681#corresp-1> *, James T. Thorson
<http://science.sciencemag.org/content/363/6430/979?utm_campaign=toc_sci-mag
_2019-02-28&et_rid=34815706&et_cid=2691681#aff-3> 3,
<http://science.sciencemag.org/content/363/6430/979?utm_campaign=toc_sci-mag
_2019-02-28&et_rid=34815706&et_cid=2691681#aff-4> 4, Malin L. Pinsky
<http://science.sciencemag.org/content/363/6430/979?utm_campaign=toc_sci-mag
_2019-02-28&et_rid=34815706&et_cid=2691681#aff-5> 5, Kiva L. Oken
<http://science.sciencemag.org/content/363/6430/979?utm_campaign=toc_sci-mag
_2019-02-28&et_rid=34815706&et_cid=2691681#aff-1> 1,
<http://science.sciencemag.org/content/363/6430/979?utm_campaign=toc_sci-mag
_2019-02-28&et_rid=34815706&et_cid=2691681#aff-6> 6, John Wiedenmann
<http://science.sciencemag.org/content/363/6430/979?utm_campaign=toc_sci-mag
_2019-02-28&et_rid=34815706&et_cid=2691681#aff-5> 5, Olaf P. Jensen
<http://science.sciencemag.org/content/363/6430/979?utm_campaign=toc_sci-mag
_2019-02-28&et_rid=34815706&et_cid=2691681#aff-1> 1

·          


Accounting for a warming ocean


Fisheries provide food and support livelihoods across the world. They are
also under extreme pressure, with many stocks overfished and poorly managed.
Climate change will add to the burden fish stocks bear, but such impacts
remain largely unknown. Free et al.used temperature-specific models and
hindcasting across fish stocks to determine the degree to which warming has,
and will, affect fish species (see the Perspective by Plagányi). They found
that an overall reduction in yield has occurred over the past 80 years.
Furthermore, although some species are predicted to respond positively to
warming waters, the majority will experience a negative impact on growth. As
our world warms, responsible and active management of fisheries harvests
will become even more important.

Science, this issue p.
<http://science.sciencemag.org/lookup/doi/10.1126/science.aau1758> 979; see
also p.  <http://science.sciencemag.org/lookup/doi/10.1126/science.aaw5824>
930

 


Abstract


Climate change is altering habitats for marine fishes and invertebrates, but
the net effect of these changes on potential food production is unknown. We
used temperature-dependent population models to measure the influence of
warming on the productivity of 235 populations of 124 species in 38
ecoregions. Some populations responded significantly positively (n = 9
populations) and others responded significantly negatively (n = 19
populations) to warming, with the direction and magnitude of the response
explained by ecoregion, taxonomy, life history, and exploitation history.
Hindcasts indicate that the maximum sustainable yield of the evaluated
populations decreased by 4.1% from 1930 to 2010, with five ecoregions
experiencing losses of 15 to 35%. Outcomes of fisheries management—including
long-term food provisioning—will be improved by accounting for changing
productivity in a warmer ocean.

 



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