Recent experience with effort management in Europe: Implications for mixed fisheries

García‐Carreras, Bernardo; Dolder, Paul J.; Engelhard, Georg H.; Lynam, Christopher P.; Bayliss‐Brown, Georgia; Mackinson, Steven

doi:10.1016/j.fishres.2015.04.010

Cited by 10 publications

(12 citation statements)

References 25 publications

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“…We did so for the demersal trawling effort by vessels landing in Bel-gium, Denmark, England, France, Germany, the Netherlands, Norway, Scotland, and Sweden (in the case of Sweden, otter trawling only, since its contribution to beam trawling effort is absent or negligible; see STECF, 2017). These countries are the most significant contributors to trawling effort in the North Sea region, together comprising >99 % of the total effort (García-Carreras et al, 2015;Greenstreet et al, 2007;STECF, 2017). The effort was quantified as number of hours fishing in a year per ICES rectangle, recorded separately for beam and otter trawling (Couce et al, 2019).…”

Section: Methodsmentioning

confidence: 99%

Reconstructing three decades of total international trawling effort in the North Sea

Couce

Schratzberger

Engelhard

2020

Earth Syst. Sci. Data

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Abstract. Fishing – especially trawling – is one of the most ubiquitous anthropogenic pressures on marine ecosystems worldwide, yet very few long-term, spatially explicit datasets on trawling effort exist; this greatly hampers our understanding of the medium- to long-term impact of trawling. This important gap is addressed here for the North Sea, a highly productive shelf sea which is also subject to many anthropogenic pressures. For a 31-year time span (1985–2015), we provide a gridded dataset of the spatial distribution of total international otter and beam trawling effort, with a resolution of 0.5∘ latitude by 1∘ longitude, over the North Sea. The dataset was largely reconstructed using compiled effort data from seven fishing effort time series, each covering shorter time spans and only some of the countries fishing the North Sea. For the years where effort data for particular countries were missing, the series was complemented using estimated (modelled) effort data. This new, long-term and large-scale trawling dataset may serve the wider scientific community, as well as those involved with policy and management, as a valuable information source on fishing pressure in a large marine ecosystem which is heavily impacted but which simultaneously provides a wealth of ecosystem services to society. The dataset is available on the Cefas Data Hub at: https://doi.org/10.14466/CefasDataHub.61, version 2 (Couce et al., 2019).

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Section: Methodsmentioning

confidence: 99%

Reconstructing three decades of total international trawling effort in the North Sea

Couce

Schratzberger

Engelhard

2020

Earth Syst. Sci. Data

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“…We did so for the demersal trawling effort by vessels landing in Belgium,Denmark,England,France,Germany,the Netherlands,Norway,5 Scotland and Sweden (otter trawling only). These countries are the most significant contributors to trawling effort in the North Sea region (García-Carreras et al, 2015;Greenstreet et al, 2007;STECF, 2017). The effort was quantified as number of hours fishing in a year per ICES rectangle, recorded separately for beam and otter trawling (Couce et al, 2019).…”

Section: Methodsmentioning

confidence: 99%

“…1a , 2008). For the present study, gears defined by STECF as 'BEAM', 'BT1' and 'BT2' were included in our 'Beam trawling' category, whereas 'OTTER', 'TR1', 'TR2', 'TR3' were included as 'Otter trawling' (in line with Engelhard et al, 2015;García-Carreras et al, 2015). 10…”

Section: Compilation Of Existing Datasets On Trawling Effortmentioning

confidence: 99%

Reconstructing three decades of total international trawling effort in the North Sea

Couce¹,

Schratzberger²,

Engelhard³

2019

Preprint

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Abstract. Fishing – especially trawling – is one of the most ubiquitous anthropogenic pressures on marine ecosystems worldwide, yet very few long-term, spatially explicit datasets on trawling effort exist; this greatly hampers our understanding of the medium- to long-term impact of trawling. This important gap is addressed here for the North Sea, a highly productive shelf sea which is also subject to many anthropogenic pressures. For a 31-year time span (1985–2015), we provide a dataset on the spatial distribution of total international otter and beam trawling effort, for all ICES rectangles (0.5° latitude by 1° longitude) of the North Sea. The dataset was largely reconstructed using compiled effort data from 7 fishing effort time-series, each covering shorter time spans and some of the countries fishing the North Sea only. For the years where effort data for particular countries were missing, the series was complemented using estimated (modelled) effort data. This new, long-term and large-scale trawling dataset may serve the wider scientific community, as well as those involved with policy and management, as a valuable information source on fishing pressure in a Large Marine Ecosystem which is heavily impacted, but which simultaneously provides a wealth of ecosystem services to society. The dataset is available on the Cefas Data Hub at: https://doi.org/10.14466/CefasDataHub.61 (Couce et al., 2019).

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“…However, controlling effort does not necessarily account for the adaptive strategies of fishers in response to regulations, which can lead to conservation and management failures (Johannes et al 2000;Arendse et al 2007;Demestre et al 2008;García-Carreras et al 2015).…”

Section: Discussionmentioning

confidence: 99%

“…Notwithstanding, the proxies used in this study to evaluate the closed season effect showed that the objective was not totally fulfilled. Given the fact that fishing operations are dynamics and adaptive (Dorn 1998;García-Carreras et al 2015), it is necessary to take into consideration fishers' responses to alleviate the fishing pressure on the resources (Torres-Irineo et al 2011).…”

Section: Discussionmentioning

confidence: 99%

Adaptive responses of tropical tuna purse-seiners under temporal regulations

Torres‐Irineo

Dreyfus-León²,

Gaertner

et al. 2016

Ambio

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The failure to achieve fisheries management objectives has been broadly discussed in international meetings. Measuring the effects of fishery regulations is difficult due to the lack of detailed information. The yellowfin tuna fishery in the eastern Pacific Ocean offers an opportunity to evaluate the fishers' responses to temporal regulations. We used data from observers on-board Mexican purse-seine fleet, which is the main fleet fishing on dolphin-associated tuna schools. In 2002, the InterAmerican Tropical Tuna Commission implemented a closed season to reduce fishing effort for this fishery. For the period 1992-2008, we analysed three fishery indicators using generalized estimating equations to evaluate the fishers' response to the closure. We found that purseseiners decreased their time spent in port, increased their fishing sets, and maintained their proportion of successful fishing sets. Our results highlight the relevance of accounting for the fisher behaviour to understand fisheries dynamics when establishing management regulations.

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Recent experience with effort management in Europe: Implications for mixed fisheries

Cited by 10 publications

References 25 publications

Reconstructing three decades of total international trawling effort in the North Sea

Reconstructing three decades of total international trawling effort in the North Sea

Reconstructing three decades of total international trawling effort in the North Sea

Adaptive responses of tropical tuna purse-seiners under temporal regulations

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