[OANNES Foro] Tracking the global footprint of fisheries

[Mario Cabrejos]

Science  23 Feb 2018:
Vol. 359, Issue 6378, pp. 904-908
DOI: 10.1126/science.aao5646


 


Tracking the global footprint of fisheries


1.    David A. Kroodsma
<http://science.sciencemag.org/content/359/6378/904?utm_campaign=toc_sci-mag
_2018-02-22&et_rid=34815706&et_cid=1867095#aff-1> 1,
<http://science.sciencemag.org/content/359/6378/904?utm_campaign=toc_sci-mag
_2018-02-22&et_rid=34815706&et_cid=1867095#corresp-1> *, Juan Mayorga
<http://science.sciencemag.org/content/359/6378/904?utm_campaign=toc_sci-mag
_2018-02-22&et_rid=34815706&et_cid=1867095#aff-2> 2,
<http://science.sciencemag.org/content/359/6378/904?utm_campaign=toc_sci-mag
_2018-02-22&et_rid=34815706&et_cid=1867095#aff-3> 3, Timothy Hochberg
<http://science.sciencemag.org/content/359/6378/904?utm_campaign=toc_sci-mag
_2018-02-22&et_rid=34815706&et_cid=1867095#aff-1> 1, Nathan A. Miller
<http://science.sciencemag.org/content/359/6378/904?utm_campaign=toc_sci-mag
_2018-02-22&et_rid=34815706&et_cid=1867095#aff-4> 4, Kristina Boerder
<http://science.sciencemag.org/content/359/6378/904?utm_campaign=toc_sci-mag
_2018-02-22&et_rid=34815706&et_cid=1867095#aff-5> 5, Francesco Ferretti
<http://science.sciencemag.org/content/359/6378/904?utm_campaign=toc_sci-mag
_2018-02-22&et_rid=34815706&et_cid=1867095#aff-6> 6, Alex Wilson
<http://science.sciencemag.org/content/359/6378/904?utm_campaign=toc_sci-mag
_2018-02-22&et_rid=34815706&et_cid=1867095#aff-7> 7, Bjorn Bergman
<http://science.sciencemag.org/content/359/6378/904?utm_campaign=toc_sci-mag
_2018-02-22&et_rid=34815706&et_cid=1867095#aff-4> 4, Timothy D. White
<http://science.sciencemag.org/content/359/6378/904?utm_campaign=toc_sci-mag
_2018-02-22&et_rid=34815706&et_cid=1867095#aff-6> 6, Barbara A. Block
<http://science.sciencemag.org/content/359/6378/904?utm_campaign=toc_sci-mag
_2018-02-22&et_rid=34815706&et_cid=1867095#aff-6> 6, Paul Woods
<http://science.sciencemag.org/content/359/6378/904?utm_campaign=toc_sci-mag
_2018-02-22&et_rid=34815706&et_cid=1867095#aff-1> 1, Brian Sullivan
<http://science.sciencemag.org/content/359/6378/904?utm_campaign=toc_sci-mag
_2018-02-22&et_rid=34815706&et_cid=1867095#aff-7> 7, Christopher Costello
<http://science.sciencemag.org/content/359/6378/904?utm_campaign=toc_sci-mag
_2018-02-22&et_rid=34815706&et_cid=1867095#aff-2> 2, Boris Worm
<http://science.sciencemag.org/content/359/6378/904?utm_campaign=toc_sci-mag
_2018-02-22&et_rid=34815706&et_cid=1867095#aff-5> 5

2.     


More than half the fish in the sea


As the human population has grown in recent decades, our dependence on
ocean-supplied protein has rapidly increased. Kroodsma et al. took advantage
of the automatic identification system installed on all industrial fishing
vessels to map and quantify fishing efforts across the world (see the
Perspective by Poloczanska). More than half of the world's oceans are
subject to industrial-scale harvest, spanning an area four times that
covered by terrestrial agriculture. Furthermore, fishing efforts seem not to
depend on economic or environmental drivers, but rather social and political
schedules. Thus, more active measures will likely be needed to ensure
sustainable use of ocean resources.

Science, this issue p.
<http://science.sciencemag.org/lookup/doi/10.1126/science.aao5646> 904; see
also p.  <http://science.sciencemag.org/lookup/doi/10.1126/science.aar7613>
864

 


Abstract


Although fishing is one of the most widespread activities by which humans
harvest natural resources, its global footprint is poorly understood and has
never been directly quantified. We processed 22 billion automatic
identification system messages and tracked >70,000 industrial fishing
vessels from 2012 to 2016, creating a global dynamic footprint of fishing
effort with spatial and temporal resolution two to three orders of magnitude
higher than for previous data sets. Our data show that industrial fishing
occurs in >55% of ocean area and has a spatial extent more than four times
that of agriculture. We find that global patterns of fishing have
surprisingly low sensitivity to short-term economic and environmental
variation and a strong response to cultural and political events such as
holidays and closures.

 



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