Dear colleagues,
We are pleased to share with you a new open access article which
proposed method for identifying fishing trajectories of gillnetters in
the Bay of Biscay (NE Atlantic), explore their possible changes since
2015 and their potential impact on the recent increase of common dolphin
bycatch.
/Jade Paillé, Corentin Vignard, Matthieu Authier, Emeric Bidenbach,
Camille Deslias, Stéphanie Tachoires, Hélène Peltier,2024.
Identification of static netters fishing trajectories with high
resolution data and their evolution in the Bay of Biscay since 2015:
Potential implications for short-beaked common dolphin bycatch,Fisheries
Research,Volume 278,107119,ISSN
0165-7836,https://doi.org/10.1016/j.fishres.2024.107119.(https://www.sciencedirect.com/science/article/pii/S0165783624001838)
/
Abstract
Since winter 2016, an increase in strandings of small cetaceans has been
recorded along the French Atlantic seaboard. This mortality, which
concerns mostly the short-beaked common dolphin (/Delphinus delphis/),
is mainly due to bycatch in fishing gears. Highly vulnerable towards
this issue, this protected species is more and more threatened in the
Bay of Biscay. Fine scale knowledge on fisheries practices, which are
ever evolving, is paramount to address the bycatch issue. The objective
of this study was to identify the individual trajectories of static
netters flying the French flag and to highlight possible changes in
their practices between 2015 and 2019, during the winter period. An
analysis of AIS data from vessels over 15 m of length, using a
clustering method (HCPC), enabled us to define a typology of the static
net fishery trajectories. The possible main trajectories of static
netters flying the French flag were identified. Among these, one
trajectory was linear with a constant navigation path and was used by
offshore gillnetters targeting hake. This trajectory increased in
frequency between 2015 and 2017. This study improves knowledge on
practices of passive fishing gears that present a risk of short-beaked
common dolphin bycatch such as gillnets and trammel nets in the Bay of
Biscay. Further analysis of AIS data from other years and fishing
fleets, adding environmental data or even dolphin distribution, are
needed for a full understanding of the bycatch issue and towards the
implementation of efficient mitigation measures.
Best wishes,
Jade Paillé ([email protected]) and Helene Peltier
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *Hélène
Peltier *- PhD Observatoire PELAGIS – UAR 3462 La Rochelle Université -
CNRS Pôle Analytique 5, Allées de l'Océan 17000 La Rochelle, FRANCE St:
05 46 44 99 10 LD: 05 46 50 76
83https://www.observatoire-pelagis.cnrs.fr/
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ "S'il
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Shadockien.
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