Title
Reference points for predators will progress ecosystem-based management of fisheries
Date Issued
01 March 2020
Access level
open access
Resource Type
journal article
Author(s)
Hill S.L.
Hinke J.
Bertrand S.
Fritz L.
Furness R.W.
Ianelli J.N.
Murphy M.
Pichegru L.
Sharp R.
Stillman R.A.
Wright P.J.
Ratcliffe N.
Publisher(s)
Blackwell Publishing Ltd
Abstract
Ecosystem-based management of fisheries aims to allow sustainable use of fished stocks while keeping impacts upon ecosystems within safe ecological limits. Both the FAO Code of Conduct for Responsible Fisheries and the Aichi Biodiversity Targets promote these aims. We evaluate implementation of ecosystem-based management in six case-study fisheries in which potential indirect impacts upon bird or mammal predators of fished stocks are well publicized and well studied. In particular, we consider the components needed to enable management strategies to respond to information from predator monitoring. Although such information is available in all case-studies, only one has a reference point defining safe ecological limits for predators and none has a method to adjust fishing activities in response to estimates of the state of the predator population. Reference points for predators have been developed outside the fisheries management context, but adoption by fisheries managers is hindered a lack of clarity about management objectives and uncertainty about how fishing affects predator dynamics. This also hinders the development of adjustment methods because these generally require information on the state of ecosystem variables relative to reference points. Nonetheless, most of the case-studies include precautionary measures to limit impacts on predators. These measures are not used tactically and therefore risk excessive restrictions on sustainable use. Adoption of predator reference points to inform tactical adjustment of precautionary measures would be an appropriate next step towards ecosystem-based management.
Start page
368
End page
378
Volume
21
Issue
2
Language
English
OCDE Knowledge area
Biología marina, Biología de agua dulce, Limnología
Scopus EID
2-s2.0-85077839079
Source
Fish and Fisheries
ISSN of the container
14672960
Sponsor(s)
We thank Carl van der Lingen for his contribution to the case‐studies, and George Watters and two anonymous reviewers for constructive feedback. SLH and NR were supported by Natural Environment Research Council core funding to the British Antarctic Survey Ecosystems programme. We thank Carl van der Lingen for his contribution to the case-studies, and George Watters and two anonymous reviewers for constructive feedback. SLH and NR were supported by Natural Environment Research Council core funding to the British Antarctic Survey Ecosystems programme.
Sources of information: Directorio de Producción Científica Scopus