Global analysis of depletion and recovery of seabed biota after bottom trawling disturbance

Hiddink, Jan Geert; Jennings, Simon; Sciberras, Marija; Szostek, Claire L.; Hughes, Kathryn M.; Ellis, Nick; Rijnsdorp, Adriaan D.; McConnaughey, Robert A.; Mazor, Tessa; Hilborn, Ray; Collie, Jeremy S.; Pitcher, C. Roland; Amoroso, Ricardo O.; Parma, Ana M.; Suuronen, Petri; Kaiser, Michel J.

doi:10.1073/pnas.1618858114

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Global analysis of depletion and recovery of seabed biota after bottom trawling disturbance

2017
By Hiddink, Jan Geert ; Jennings, Simon ; Sciberras, Marija ; ...
Source: Proc Natl Acad Sci U S A. 2017 Aug 1; 114(31): 8301-8306.

[PDF-4.09 MB]

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Details:

Journal Title:

Proceedings of the National Academy of Science of the United States
Personal Author:

Hiddink, Jan Geert ; Jennings, Simon ; Sciberras, Marija ; Szostek, Claire L. ; Hughes, Kathryn M. ; ... More +

Hiddink, Jan Geert ; Jennings, Simon ; Sciberras, Marija ; Szostek, Claire L. ; Hughes, Kathryn M. ; Ellis, Nick ; Rijnsdorp, Adriaan D. ; McConnaughey, Robert A. ; Mazor, Tessa ; Hilborn, Ray ; Collie, Jeremy S. ; Pitcher, C. Roland ; Amoroso, Ricardo O. ; Parma, Ana M. ; Suuronen, Petri ; Kaiser, Michel J. Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; AFSC (Alaska Fisheries Science Center)

NMFS (National Marine Fisheries Service) ; AFSC (Alaska Fisheries Science Center) Less -
Description:

Bottom trawling is the most widespread human activity affecting seabed habitats. Here, we collate all available data for experimental and comparative studies of trawling impacts on whole communities of seabed macroinvertebrates on sedimentary habitats and develop widely applicable methods to estimate depletion and recovery rates of biota after trawling. Depletion of biota and trawl penetration into the seabed are highly correlated. Otter trawls caused the least depletion, removing 6% of biota per pass and penetrating the seabed on average down to 2.4 cm, whereas hydraulic dredges caused the most depletion, removing 41% of biota and penetrating the seabed on average 16.1 cm. Median recovery times posttrawling (from 50 to 95% of unimpacted biomass) ranged between 1.9 and 6.4 y. By accounting for the effects of penetration depth, environmental variation, and uncertainty, the models explained much of the variability of depletion and recovery estimates from single studies. Coupled with large-scale, high-resolution maps of trawling frequency and habitat, our estimates of depletion and recovery rates enable the assessment of trawling impacts on unprecedented spatial scales.
Keywords:

[+]

Dredging (Fisheries)
Source:

Proc Natl Acad Sci U S A. 2017 Aug 1; 114(31): 8301-8306.
DOI:

https://doi.org/10.1073/pnas.1618858114
Pubmed Central ID:

PMC5547586
Document Type:

Journal Article
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PMC
Main Document Checksum:

[+]

urn:sha256:ebacff8188a21cd6b2171a8ab158d6b2a353235308457e4a9070210961b27ad1
Download URL:

https://repository.library.noaa.gov/view/noaa/24380/noaa_24380_DS1.pdf
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