Results 251 to 260 of about 226,357 (275)

Mapping the bycatch seascape: multispecies and multi‐scale spatial patterns of fisheries bycatch

Ecological Applications, 2009
Fisheries bycatch is a worldwide conservation issue. Despite a growing awareness of bycatch problems in particular ocean regions, there have been few efforts to identify spatial patterns in bycatch events. Furthermore, many studies of fisheries bycatch have been myopic, focusing on a single species or a single region.
Rebecca L, Lewison, Candan U, Soykan, Janet, Franklin   +2 more
openaire   +2 more sources

Cyclical harvesting in fisheries with bycatch

Resource and Energy Economics, 2015
Abstract Bycatch is often a concern in sustainable fisheries management due to its contribution to overfishing problems. This paper examines bycatch in a multi-sector fishery in which the gear of one sector is imperfectly selective while in the other it is perfectly selective. In the model, the two stocks are biologically independent so the fisheries
openaire   +1 more source

Bycatch ITQ Management in Oligopolistic Fisheries [PDF]

, 2011
This paper analyzes the effects of an individual transferable quota (ITQ) system implemented on bycatch on the global harvest level of oligopolistic fisheries. We show that the impact of changes in the total allowable catch (TAC) on the equilibrium harvest level depends on the degree of returns to scale in harvest. In particular, a reduction in the TAC
Jean-Christophe Pereau, Nicolas Sanz
openaire  

Defining and estimating global marine fisheries bycatch

Marine Policy, 2009
Unselective fishing catches non-target organisms as ‘bycatch’—an issue of critical ocean conservation and resource management concern. However, the situation is confused because perceptions of target and non-target catch vary widely, impeding efforts to estimate bycatch globally. To remedy this, the term needs to be redefined as a consistent definition
R.W.D. Davies, S.J. Cripps, A. Nickson, G. Porter   +3 more
openaire   +1 more source

Potential effects of bycatch from the squat lobster fisheries in central Chile on the benthic ecosystem: a survey data approach

, 2020
In Chile, bottom trawling for squat lobsters is one of the most important crustacean fisheries. The fishery has been monitored for the past 15 years to assess the resource status, spatial distribution and effects on benthic species.
J. Montero, A. Flores, D. Queirolo, Ariel A. Farías, R. Wiff, M. Lima, Carla Rivera-Rebella, M. Ahumada   +7 more
semanticscholar   +1 more source

Conservation of Marine Megafauna through Minimization of Fisheries Bycatch

Conservation Biology, 2009
Abstract:  Many populations of marine megafauna, including seabirds, sea turtles, marine mammals, and elasmobranchs, have declined in recent decades due largely to anthropogenic mortality. To successfully conserve these long‐lived animals, efforts must be prioritized according to feasibility and the degree to ...
Ramūnas, Žydelis, Bryan P, Wallace, Eric L, Gilman, Timothy B, Werner   +3 more
openaire   +2 more sources

Applying a sequential evidence hierarchy, with caveats, to support prudent fisheries bycatch policy

Reviews in Fish Biology and Fisheries, 2022
E. Gilman, M. Chaloupka
semanticscholar   +1 more source

French Bluefin Tuna Longline Fishery Bycatch Programme

2019
During the last decade, particular attention has been paid worldwide to the problem of bycatch and discards in fisheries. Collaborative research between fishermen and scientists is important to fisheries management. Partnerships with commercial longline fishermen were developed to enable them to participate in two research projects in order to ...
François Poisson, Sophie Arnaud-Haond, Hervé Demarcq, Luisa Métral, Blandine Brisset, Delphine Cornella, Bertrand Wendling   +6 more
openaire   +1 more source

Bycatch of Marine Mammals in U.S. and Global Fisheries

Conservation Biology, 2006
Abstract:  Fisheries bycatch poses a significant threat to many populations of marine mammals, but there are few published estimates of the magnitude of these catches. We estimated marine mammal bycatch in U.S.
Andrew J, Read, Phebe, Drinker, Simon, Northridge   +2 more
openaire   +2 more sources

Sustainability of fishery bycatch: a process for assessing highly diverse and numerous bycatch

Environmental Conservation, 2001
In tropical prawn (shrimp) trawl fisheries it is daunting to assess the sustainability of bycatch species because they are diverse and there is little historical and biological information for quantitative stock assessments. We developed a process to examine the likely impact of prawn trawling on the sustainability of bycatch species and applied this ...
Ilona Stobutzki, Margaret Miller, David Brewer   +2 more
openaire   +1 more source