Effects of chronic trawling disturbance on the secondary production of suprabenthic and infaunal crustacean communities in the Adriatic Sea (NW Mediterranean)
Towing gears are known to produce several kinds of effects on benthic ecosystems. As small organisms and benthic species with faster growth rates and shorter life histories can withstand the fishing mortality and benefit from reduced competition or predation, trawl fishing can enhance their prolife...
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| Format: | Article |
| Language: | English |
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Universidad Autónoma de Baja California
2009-06-01
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| Series: | Ciencias Marinas |
| Subjects: | |
| Online Access: | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1501 |
| _version_ | 1797279470278672384 |
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| author | A Ligas AM De Biasi M Demestre L Pacciardi P Sartor JE Cartes |
| author_facet | A Ligas AM De Biasi M Demestre L Pacciardi P Sartor JE Cartes |
| author_sort | A Ligas |
| collection | DOAJ |
| description |
Towing gears are known to produce several kinds of effects on benthic ecosystems. As small organisms and benthic species with faster growth rates and shorter life histories can withstand the fishing mortality and benefit from reduced competition or predation, trawl fishing can enhance their proliferation. Thus, trawl fishing can lead to biomass loss and production increase, since smaller specimens are more productive than bigger ones. In the present study we evaluate the effects, if any, of trawling on benthic crustacean macrofaunal production rates. Sampling was carried out in two neighbouring sites in the central Adriatic Sea (central Mediterranean), one affected by fishing activity and one not. Production and production/biomass (P/B) ratio of 13 species of peracarid and eucarid crustaceans were estimated using the Hynes size-frequency method. Estimates measured at both sites were compared in order to test the hypothesis that higher production and P/B values should occur in the fished area rather than in the unfished one. Our results indicated that the effects on the species are more complex than expected in regard to this hypothesis, and that they depend on the ecological and behavioural characteristics of the selected species.
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| first_indexed | 2024-03-07T16:25:50Z |
| format | Article |
| id | doaj.art-87a8aa58f82843cf84aa4adf02390072 |
| institution | Directory Open Access Journal |
| issn | 0185-3880 2395-9053 |
| language | English |
| last_indexed | 2024-03-07T16:25:50Z |
| publishDate | 2009-06-01 |
| publisher | Universidad Autónoma de Baja California |
| record_format | Article |
| series | Ciencias Marinas |
| spelling | doaj.art-87a8aa58f82843cf84aa4adf023900722024-03-03T18:14:56ZengUniversidad Autónoma de Baja CaliforniaCiencias Marinas0185-38802395-90532009-06-0135210.7773/cm.v35i2.1501Effects of chronic trawling disturbance on the secondary production of suprabenthic and infaunal crustacean communities in the Adriatic Sea (NW Mediterranean)A Ligas0AM De Biasi1M Demestre2L Pacciardi3P Sartor4JE Cartes5Centro Interuniversitario di Biologia Marina ed Ecologia Applicata “G. Bacci"Centro Interuniversitario di Biologia Marina ed Ecologia Applicata “G. Bacci"Institut de Ciències del Mar - CMIMA (CSIC)Centro Interuniversitario di Biologia Marina ed Ecologia Applicata “G. Bacci"Centro Interuniversitario di Biologia Marina ed Ecologia Applicata “G. Bacci"Institut de Ciències del Mar - CMIMA (CSIC) Towing gears are known to produce several kinds of effects on benthic ecosystems. As small organisms and benthic species with faster growth rates and shorter life histories can withstand the fishing mortality and benefit from reduced competition or predation, trawl fishing can enhance their proliferation. Thus, trawl fishing can lead to biomass loss and production increase, since smaller specimens are more productive than bigger ones. In the present study we evaluate the effects, if any, of trawling on benthic crustacean macrofaunal production rates. Sampling was carried out in two neighbouring sites in the central Adriatic Sea (central Mediterranean), one affected by fishing activity and one not. Production and production/biomass (P/B) ratio of 13 species of peracarid and eucarid crustaceans were estimated using the Hynes size-frequency method. Estimates measured at both sites were compared in order to test the hypothesis that higher production and P/B values should occur in the fished area rather than in the unfished one. Our results indicated that the effects on the species are more complex than expected in regard to this hypothesis, and that they depend on the ecological and behavioural characteristics of the selected species. https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1501benthic boundary layerbenthosMediterranean Seasecondary productiontrawling |
| spellingShingle | A Ligas AM De Biasi M Demestre L Pacciardi P Sartor JE Cartes Effects of chronic trawling disturbance on the secondary production of suprabenthic and infaunal crustacean communities in the Adriatic Sea (NW Mediterranean) Ciencias Marinas benthic boundary layer benthos Mediterranean Sea secondary production trawling |
| title | Effects of chronic trawling disturbance on the secondary production of suprabenthic and infaunal crustacean communities in the Adriatic Sea (NW Mediterranean) |
| title_full | Effects of chronic trawling disturbance on the secondary production of suprabenthic and infaunal crustacean communities in the Adriatic Sea (NW Mediterranean) |
| title_fullStr | Effects of chronic trawling disturbance on the secondary production of suprabenthic and infaunal crustacean communities in the Adriatic Sea (NW Mediterranean) |
| title_full_unstemmed | Effects of chronic trawling disturbance on the secondary production of suprabenthic and infaunal crustacean communities in the Adriatic Sea (NW Mediterranean) |
| title_short | Effects of chronic trawling disturbance on the secondary production of suprabenthic and infaunal crustacean communities in the Adriatic Sea (NW Mediterranean) |
| title_sort | effects of chronic trawling disturbance on the secondary production of suprabenthic and infaunal crustacean communities in the adriatic sea nw mediterranean |
| topic | benthic boundary layer benthos Mediterranean Sea secondary production trawling |
| url | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1501 |
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