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Impact of mechanical clam harvesting on a benthic habitat: evaluation by means of sediment profile imaging

2004; Wiley; Volume: 14; Issue: S1 Linguagem: Inglês

10.1002/aqc.650

1099-0755

Guido Badino, Francesca Bona, A. Maffiotti, Otello Giovanardi, Fabio Pranovi,

Fish Ecology and Management Studies

Aquatic Conservation: Marine and Freshwater EcosystemsVolume 14, Issue S1 p. S59-S67 Research Article Impact of mechanical clam harvesting on a benthic habitat: evaluation by means of sediment profile imaging Guido Badino, Corresponding Author Guido Badino guido.badino@unito.it Department of Animal Biology, University of Turin, via Accademia Albertina 17, 10123 Turin, ItalyDepartment of Animal Biology, University of Turin, via Accademia Albertina 17, 10123 Turin, ItalySearch for more papers by this authorFrancesca Bona, Francesca Bona Department of Animal Biology, University of Turin, via Accademia Albertina 17, 10123 Turin, ItalySearch for more papers by this authorAlberto Maffiotti, Alberto Maffiotti Department of Environmental Impact Assessment ARPA, Turin, ItalySearch for more papers by this authorOtello Giovanardi, Otello Giovanardi ICRAM Chioggia, Venice, ItalySearch for more papers by this authorFabio Pranovi, Fabio Pranovi Department of Environmental Sciences, University of Venice, Calle Larga Santa Marta 2137, 30123 Venice, ItalySearch for more papers by this author Guido Badino, Corresponding Author Guido Badino guido.badino@unito.it Department of Animal Biology, University of Turin, via Accademia Albertina 17, 10123 Turin, ItalyDepartment of Animal Biology, University of Turin, via Accademia Albertina 17, 10123 Turin, ItalySearch for more papers by this authorFrancesca Bona, Francesca Bona Department of Animal Biology, University of Turin, via Accademia Albertina 17, 10123 Turin, ItalySearch for more papers by this authorAlberto Maffiotti, Alberto Maffiotti Department of Environmental Impact Assessment ARPA, Turin, ItalySearch for more papers by this authorOtello Giovanardi, Otello Giovanardi ICRAM Chioggia, Venice, ItalySearch for more papers by this authorFabio Pranovi, Fabio Pranovi Department of Environmental Sciences, University of Venice, Calle Larga Santa Marta 2137, 30123 Venice, ItalySearch for more papers by this author First published: 15 November 2004 https://doi.org/10.1002/aqc.650Citations: 13AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract 1. Manila clam (Tapes philippinarum) harvesting in the Venice Lagoon has increased considerably in the last decade, owing to recently developed collection methods. However, these techniques have negative effects on benthic communities and on the structural and functional characteristics of the sediments. 2. A field survey was carried out in 2000 in the central basin of the Venice Lagoon to evaluate the efficacy of sediment profile imaging (SPI) in investigating disturbances caused by fishing activities and to compare the modifications of bottom sediments induced by different fishing gear (the 'rusca', currently used by local fishermen, and a rotating drum). 3. An environmental index, the organism–sediment index, derived from SPI analysis was applied. The efficacy of the SPI camera method in evaluating the disturbance of soft bottoms caused by clam harvesting was confirmed, as was the high degree of disturbance of sediment and benthic communities by mechanical clam harvesting. 4. The experimental hauls strongly modified the sediment features by resuspending the top layer of sediment and bringing the deep anoxic layer near the bottom. These effects could have a severe impact on the biogeochemical cycles and on the possibility of recolonization by benthic organisms in the short term. However, there was less disturbance when the rotating drum fishing gear was used. Copyright © 2004 John Wiley & Sons, Ltd. Citing Literature Volume14, IssueS1Supplement: Monitoring Transitional Waters in Europe2004Pages S59-S67 RelatedInformation