Dear colleagues,
My co-authors and I are pleased to announce you the publication of a new
article : /
/
Peltier, H., Authier, M., Dabin, W., Dars, C., Demaret, F., Doremus, G.,
Van Canneyt, O., Laran, S., Mendez-Fernandez, P., Spitz, J., Daniel, P.,
Ridoux, V. /(/2020) /Can modelling the drift of bycaught dolphin
stranded carcasses help identify involved fisheries? An exploratory
study. /Global Ecology and Conservation. vol. 21. e00843.
The aim of this work is to test an approach that could help identify the
fisheries potentially involved in a given stranding event. We explored
this methodology during the multiple stranding event of common dolphins
in winter 2017 along the French Atlantic coasts, related to fishery
interactions.
Abstract:
Between the 1st of February and the March 31, 2017, 793 stranded
cetaceans were found along the French Atlantic coasts. Common dolphins
made up 84% of these strandings, and most of these presented evidence of
death in fishing gear. The aim of this work is to test an approach that
could help identify the fisheries potentially involved in a given
stranding event. To do this we examined how the distributions of likely
areas of mortality of bycaught dolphins, inferred from carcass drift
modelling, coincide with fishing effort statistics of various fleets,
generated from the Vessel Monitoring System, in the area over the same
dates. Using reverse drift modelling, two main mortality areas were
identified. A total of 3690 common dolphins (IC95% [2230; 6900]) were
estimated to have died in fishing gear within the Bay of Biscay during
this unusual stranding event. There was a positive correlation between
the origin of stranded bycaught dolphins and the fishing effort
distribution of French midwater pair trawlers, Spanish otter bottom
trawlers and French Danish seiners. This co-occurrence highlights a risk
and identifies fisheries that require further investigation (through
observers or e-monitoring). These fisheries differed in their fishing
gear, but two characteristics appear to be shared: they targeted
predatory fishes (sea bass and hake) in winter and used high vertical
opening gear.
The paper is freely available online:
https://doi.org/10.1016/j.gecco.2019.e00843
We wish you great Christmas holidays!
Best wishes
On behalf of all co-authors, Helene Peltier
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Hélène PELTIER -PhD
Observatoire PELAGIS UMS 3462
Université de La Rochelle-CNRS
5, allées de l'océan
17000 La Rochelle, France
LD: +33 (0) 5 46 50 76 83
St: +33 (0) 5 46 44 99 10
http://observatoire-pelagis.cnrs.fr/
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