Spatio-temporal associations between harbour porpoise Phocoena phocoena and specific fisheries in the German Bight. Herr, H., Fock, H. O., & Siebert, U. Biological Conservation, 142(12):2962 - 2972, 2009. ![Spatio-temporal associations between harbour porpoise Phocoena phocoena and specific fisheries in the German Bight [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Interactions between cetaceans and fisheries are a major concern of cetacean conservation and fisheries management, as by-catch and resource competition occur as a result. To assess potential interaction between porpoises and fisheries in the German Bight, high-resolution spatial and temporal data were analysed in order to reveal association patterns between cetaceans and fisheries in the German Exclusive Economic Zone (EEZ) of the North Sea. To facilitate interpretation of resulting patterns, additionally, relationships of fish assemblages were analysed. Vessel monitoring system (VMS) data from 2006 and fisheries surveillance data from 2002 to 2006 were acquired to calculate fishing effort, aerial survey data from 2002 to 2006 to evaluate porpoise distribution, and trawl survey data from 2000 to 2007 to assess fish assemblage. Relationships were analysed in terms of seasonal association and overlap. Results showed that porpoise distribution was positively associated with sandeel fisheries in all seasons and with gillnet fisheries in summer. Overlaps for sandeel and gillnet fisheries were high in summer, while negligible in spring and autumn. In spring, high overlap was found for large beam trawlers targeting sole and plaice. In parallel, porpoise distribution was positively linked to fish assemblage components representing sandeel and poor cod in summer and flatfish in spring. Our results suggest that, especially in summer, resource competition between porpoises and industrial sandeel fisheries is likely and the risk of by-catch in gillnets is increased. In spring, interference with sole and plaice fisheries is to be expected.
@ARTICLE{Herr2009a,
author = {Helena Herr and Heino O. Fock and Ursula Siebert},
title = {Spatio-temporal associations between harbour porpoise Phocoena phocoena
and specific fisheries in the German Bight},
journal = {Biological Conservation},
year = {2009},
volume = {142},
pages = {2962 - 2972},
number = {12},
abstract = {Interactions between cetaceans and fisheries are a major concern of
cetacean conservation and fisheries management, as by-catch and resource
competition occur as a result. To assess potential interaction between
porpoises and fisheries in the German Bight, high-resolution spatial
and temporal data were analysed in order to reveal association patterns
between cetaceans and fisheries in the German Exclusive Economic
Zone (EEZ) of the North Sea. To facilitate interpretation of resulting
patterns, additionally, relationships of fish assemblages were analysed.
Vessel monitoring system (VMS) data from 2006 and fisheries surveillance
data from 2002 to 2006 were acquired to calculate fishing effort,
aerial survey data from 2002 to 2006 to evaluate porpoise distribution,
and trawl survey data from 2000 to 2007 to assess fish assemblage.
Relationships were analysed in terms of seasonal association and
overlap. Results showed that porpoise distribution was positively
associated with sandeel fisheries in all seasons and with gillnet
fisheries in summer. Overlaps for sandeel and gillnet fisheries were
high in summer, while negligible in spring and autumn. In spring,
high overlap was found for large beam trawlers targeting sole and
plaice. In parallel, porpoise distribution was positively linked
to fish assemblage components representing sandeel and poor cod in
summer and flatfish in spring. Our results suggest that, especially
in summer, resource competition between porpoises and industrial
sandeel fisheries is likely and the risk of by-catch in gillnets
is increased. In spring, interference with sole and plaice fisheries
is to be expected.},
doi = {10.1016/j.biocon.2009.07.025},
issn = {0006-3207},
keywords = {VMS, Sandeel fisheries, Gillnet fisheries, Resource competition, By-catch,
North Sea },
owner = {eric},
subdatabase = {distance},
timestamp = {2010.04.26},
url = {http://www.sciencedirect.com/science/article/B6V5X-4X2F5HF-1/2/3dedbd92db25217c0991cdf18209cb6c}
}
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To assess potential interaction between porpoises and fisheries in the German Bight, high-resolution spatial and temporal data were analysed in order to reveal association patterns between cetaceans and fisheries in the German Exclusive Economic Zone (EEZ) of the North Sea. To facilitate interpretation of resulting patterns, additionally, relationships of fish assemblages were analysed. Vessel monitoring system (VMS) data from 2006 and fisheries surveillance data from 2002 to 2006 were acquired to calculate fishing effort, aerial survey data from 2002 to 2006 to evaluate porpoise distribution, and trawl survey data from 2000 to 2007 to assess fish assemblage. Relationships were analysed in terms of seasonal association and overlap. Results showed that porpoise distribution was positively associated with sandeel fisheries in all seasons and with gillnet fisheries in summer. Overlaps for sandeel and gillnet fisheries were high in summer, while negligible in spring and autumn. In spring, high overlap was found for large beam trawlers targeting sole and plaice. In parallel, porpoise distribution was positively linked to fish assemblage components representing sandeel and poor cod in summer and flatfish in spring. Our results suggest that, especially in summer, resource competition between porpoises and industrial sandeel fisheries is likely and the risk of by-catch in gillnets is increased. In spring, interference with sole and plaice fisheries is to be expected.","doi":"10.1016/j.biocon.2009.07.025","issn":"0006-3207","keywords":"VMS, Sandeel fisheries, Gillnet fisheries, Resource competition, By-catch, North Sea ","owner":"eric","subdatabase":"distance","timestamp":"2010.04.26","url":"http://www.sciencedirect.com/science/article/B6V5X-4X2F5HF-1/2/3dedbd92db25217c0991cdf18209cb6c","bibtex":"@ARTICLE{Herr2009a,\r\n author = {Helena Herr and Heino O. Fock and Ursula Siebert},\r\n title = {Spatio-temporal associations between harbour porpoise Phocoena phocoena\r\n\tand specific fisheries in the German Bight},\r\n journal = {Biological Conservation},\r\n year = {2009},\r\n volume = {142},\r\n pages = {2962 - 2972},\r\n number = {12},\r\n abstract = {Interactions between cetaceans and fisheries are a major concern of\r\n\tcetacean conservation and fisheries management, as by-catch and resource\r\n\tcompetition occur as a result. To assess potential interaction between\r\n\tporpoises and fisheries in the German Bight, high-resolution spatial\r\n\tand temporal data were analysed in order to reveal association patterns\r\n\tbetween cetaceans and fisheries in the German Exclusive Economic\r\n\tZone (EEZ) of the North Sea. To facilitate interpretation of resulting\r\n\tpatterns, additionally, relationships of fish assemblages were analysed.\r\n\tVessel monitoring system (VMS) data from 2006 and fisheries surveillance\r\n\tdata from 2002 to 2006 were acquired to calculate fishing effort,\r\n\taerial survey data from 2002 to 2006 to evaluate porpoise distribution,\r\n\tand trawl survey data from 2000 to 2007 to assess fish assemblage.\r\n\tRelationships were analysed in terms of seasonal association and\r\n\toverlap. Results showed that porpoise distribution was positively\r\n\tassociated with sandeel fisheries in all seasons and with gillnet\r\n\tfisheries in summer. Overlaps for sandeel and gillnet fisheries were\r\n\thigh in summer, while negligible in spring and autumn. In spring,\r\n\thigh overlap was found for large beam trawlers targeting sole and\r\n\tplaice. In parallel, porpoise distribution was positively linked\r\n\tto fish assemblage components representing sandeel and poor cod in\r\n\tsummer and flatfish in spring. Our results suggest that, especially\r\n\tin summer, resource competition between porpoises and industrial\r\n\tsandeel fisheries is likely and the risk of by-catch in gillnets\r\n\tis increased. In spring, interference with sole and plaice fisheries\r\n\tis to be expected.},\r\n doi = {10.1016/j.biocon.2009.07.025},\r\n issn = {0006-3207},\r\n keywords = {VMS, Sandeel fisheries, Gillnet fisheries, Resource competition, By-catch,\r\n\tNorth Sea },\r\n owner = {eric},\r\n subdatabase = {distance},\r\n timestamp = {2010.04.26},\r\n url = {http://www.sciencedirect.com/science/article/B6V5X-4X2F5HF-1/2/3dedbd92db25217c0991cdf18209cb6c}\r\n}\r\n\r\n","author_short":["Herr, H.","Fock, H. 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