Bottom trawling affects fish condition through changes in the ratio of prey availability to density of competitors
Volume 53: Special Feature: Model‐assisted monitoring of biodiversity 1. Bottom-trawl fisheries are widespread and cause mortality of benthic invertebrates, which in turn may lead to a decrease in the availability of prey for target fish species. Exploitation also reduces the abundance of the fish s...
Published in: | Journal of Applied Ecology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2016
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Online Access: | http://hdl.handle.net/10508/10906 http://hdl.handle.net/10261/323688 https://doi.org/10.1111/1365-2664.12697 |
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ftcsic:oai:digital.csic.es:10261/323688 2024-02-11T10:06:50+01:00 Bottom trawling affects fish condition through changes in the ratio of prey availability to density of competitors Hiddink, Jan Geert Moranta, Joan Balestrini, Stephen Sciberras, Marija Cendrier, Marine Bowyer, Rosie Kaiser, M.J. Sköld, Mattias Jonsson, Patrik Bastardie, Francois Hinz, Hilmar Océano Atlántico Atlantique Nord Océan atlantique North Atlantic Atlántico Norte Atlantic Ocean 2016-10 http://hdl.handle.net/10508/10906 http://hdl.handle.net/10261/323688 https://doi.org/10.1111/1365-2664.12697 en eng #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/312088. info:eu-repo/grantAgreement/EC/FP7/227799. Marie Curie Fellowship LINKFISH. Grant Number: 299552. Swedish Research Council FORMAS. Grant Number: 2012-942 Centro Oceanográfico de Baleares VoR Journal of Applied Ecology, 53. 2016: 1500-1510 0021-8901 http://hdl.handle.net/10508/10906 http://hdl.handle.net/10261/323688 doi:10.1111/1365-2664.12697 22369 open Centro Oceanográfico de Baleares Pesquerías benthic invertebrates benthivorous fish bottom trawling density dependence ecosystem effects of fishing Kattegat marine protected area otter trawl prey availability fish competitors research article 2016 ftcsic https://doi.org/10.1111/1365-2664.12697 2024-01-16T11:47:15Z Volume 53: Special Feature: Model‐assisted monitoring of biodiversity 1. Bottom-trawl fisheries are widespread and cause mortality of benthic invertebrates, which in turn may lead to a decrease in the availability of prey for target fish species. Exploitation also reduces the abundance of the fish species themselves. Modelling studies have shown that bottom trawling could lead to both increases and decreases in fish production, but so far empirical evidence to test these ideas has been very limited. We hypothesize that the effect of bottom trawling on the food intake and condition of fish depends on how the ratio of prey to consumers changes with increasing fishing pressure. 2. We assessed the impact of bottom trawling on the food availability, condition and stomach contents of three flatfishes and the Norway lobster in an area in the Kattegat that is characterized by a steep commercial bottom-trawling gradient due to the establishment of an area closed to all fisheries, but otherwise has homogeneous environmental conditions. 3. For plaice, prey biomass initially decreased at a slower rate with trawling than the biomass of fish, and as a result, the amount of food available per plaice increased before decreasing at trawling frequencies >5 times year−1. This pattern was mirrored in both the condition and stomach contents of plaice and for long-rough dab. 4. No effect of trawling on dab prey and condition was found. Conversely, the condition of the main target species – Norway lobster – increased as its biomass decreased with increased trawling intensities. 5. Together, these results support the idea that when the abundance of the prey declines in response to exploitation, the ratio of the prey to consumer biomass will determine whether exploitation will result in an increase or a decrease in the food intake and condition of the predator. 6. Synthesis and applications. Our study indicates that fish production may be maximized by keeping bottom-trawling intensities relatively low, although this may negatively ... Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) Kattegat ENVELOPE(9.692,9.692,63.563,63.563) Norway Journal of Applied Ecology 53 5 1500 1510 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Centro Oceanográfico de Baleares Pesquerías benthic invertebrates benthivorous fish bottom trawling density dependence ecosystem effects of fishing Kattegat marine protected area otter trawl prey availability fish competitors |
spellingShingle |
Centro Oceanográfico de Baleares Pesquerías benthic invertebrates benthivorous fish bottom trawling density dependence ecosystem effects of fishing Kattegat marine protected area otter trawl prey availability fish competitors Hiddink, Jan Geert Moranta, Joan Balestrini, Stephen Sciberras, Marija Cendrier, Marine Bowyer, Rosie Kaiser, M.J. Sköld, Mattias Jonsson, Patrik Bastardie, Francois Hinz, Hilmar Bottom trawling affects fish condition through changes in the ratio of prey availability to density of competitors |
topic_facet |
Centro Oceanográfico de Baleares Pesquerías benthic invertebrates benthivorous fish bottom trawling density dependence ecosystem effects of fishing Kattegat marine protected area otter trawl prey availability fish competitors |
description |
Volume 53: Special Feature: Model‐assisted monitoring of biodiversity 1. Bottom-trawl fisheries are widespread and cause mortality of benthic invertebrates, which in turn may lead to a decrease in the availability of prey for target fish species. Exploitation also reduces the abundance of the fish species themselves. Modelling studies have shown that bottom trawling could lead to both increases and decreases in fish production, but so far empirical evidence to test these ideas has been very limited. We hypothesize that the effect of bottom trawling on the food intake and condition of fish depends on how the ratio of prey to consumers changes with increasing fishing pressure. 2. We assessed the impact of bottom trawling on the food availability, condition and stomach contents of three flatfishes and the Norway lobster in an area in the Kattegat that is characterized by a steep commercial bottom-trawling gradient due to the establishment of an area closed to all fisheries, but otherwise has homogeneous environmental conditions. 3. For plaice, prey biomass initially decreased at a slower rate with trawling than the biomass of fish, and as a result, the amount of food available per plaice increased before decreasing at trawling frequencies >5 times year−1. This pattern was mirrored in both the condition and stomach contents of plaice and for long-rough dab. 4. No effect of trawling on dab prey and condition was found. Conversely, the condition of the main target species – Norway lobster – increased as its biomass decreased with increased trawling intensities. 5. Together, these results support the idea that when the abundance of the prey declines in response to exploitation, the ratio of the prey to consumer biomass will determine whether exploitation will result in an increase or a decrease in the food intake and condition of the predator. 6. Synthesis and applications. Our study indicates that fish production may be maximized by keeping bottom-trawling intensities relatively low, although this may negatively ... |
format |
Article in Journal/Newspaper |
author |
Hiddink, Jan Geert Moranta, Joan Balestrini, Stephen Sciberras, Marija Cendrier, Marine Bowyer, Rosie Kaiser, M.J. Sköld, Mattias Jonsson, Patrik Bastardie, Francois Hinz, Hilmar |
author_facet |
Hiddink, Jan Geert Moranta, Joan Balestrini, Stephen Sciberras, Marija Cendrier, Marine Bowyer, Rosie Kaiser, M.J. Sköld, Mattias Jonsson, Patrik Bastardie, Francois Hinz, Hilmar |
author_sort |
Hiddink, Jan Geert |
title |
Bottom trawling affects fish condition through changes in the ratio of prey availability to density of competitors |
title_short |
Bottom trawling affects fish condition through changes in the ratio of prey availability to density of competitors |
title_full |
Bottom trawling affects fish condition through changes in the ratio of prey availability to density of competitors |
title_fullStr |
Bottom trawling affects fish condition through changes in the ratio of prey availability to density of competitors |
title_full_unstemmed |
Bottom trawling affects fish condition through changes in the ratio of prey availability to density of competitors |
title_sort |
bottom trawling affects fish condition through changes in the ratio of prey availability to density of competitors |
publishDate |
2016 |
url |
http://hdl.handle.net/10508/10906 http://hdl.handle.net/10261/323688 https://doi.org/10.1111/1365-2664.12697 |
op_coverage |
Océano Atlántico Atlantique Nord Océan atlantique North Atlantic Atlántico Norte Atlantic Ocean |
long_lat |
ENVELOPE(9.692,9.692,63.563,63.563) |
geographic |
Kattegat Norway |
geographic_facet |
Kattegat Norway |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/312088. info:eu-repo/grantAgreement/EC/FP7/227799. Marie Curie Fellowship LINKFISH. Grant Number: 299552. Swedish Research Council FORMAS. Grant Number: 2012-942 Centro Oceanográfico de Baleares VoR Journal of Applied Ecology, 53. 2016: 1500-1510 0021-8901 http://hdl.handle.net/10508/10906 http://hdl.handle.net/10261/323688 doi:10.1111/1365-2664.12697 22369 |
op_rights |
open |
op_doi |
https://doi.org/10.1111/1365-2664.12697 |
container_title |
Journal of Applied Ecology |
container_volume |
53 |
container_issue |
5 |
container_start_page |
1500 |
op_container_end_page |
1510 |
_version_ |
1790604817548181504 |