{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,30]],"date-time":"2026-03-30T11:36:25Z","timestamp":1774870585279,"version":"3.50.1"},"reference-count":21,"publisher":"Oxford University Press (OUP)","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2003,1,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Two single-beam, seabed-classification systems, QTC VIEW Series IV and QTC VIEW Series V, were used to identify and map biosedimentary gradients in a mid-shelf area off Western Portugal. The survey area has a moderate slope, a depth ranging from 30 to 90 m along a 3.5-km axis perpendicular to the shoreline, and is characterized by smooth sedimentary and biological gradients. Ground truth for sediment grain size and macrofaunal communities was based on grab sampling at 20 sites. The sedimentary and biological data were analysed using classification and ordination techniques. The acoustic data were analysed with qtc impact software and classified into acoustic classes. The affinity groups obtained in each data set were mapped using a Geographics Information System. All showed good agreement and identified prevailing gradients along a northwest\u2013southeast direction. Three acoustic classes were identified, corresponding to the predominant sediment types, namely fine sand with low silt and clay content, silty, very fine sand, and mud. A close relationship with benthic communities was also verified, although less marked because benthic communities continuously change along the northwest\u2013southeast gradient. Overall, the acoustic system coupled with ground-truthing data was able to discriminate and characterize the various benthic biotopes in the survey area.<\/jats:p>","DOI":"10.1016\/s1054-3139(03)00061-4","type":"journal-article","created":{"date-parts":[[2003,6,30]],"date-time":"2003-06-30T13:57:08Z","timestamp":1056981428000},"page":"599-608","source":"Crossref","is-referenced-by-count":42,"title":["Acoustic seabed classification of marine habitats: studies in the western coastal-shelf area of Portugal"],"prefix":"10.1093","volume":"60","author":[{"given":"Rosa","family":"Freitas","sequence":"first","affiliation":[{"name":"Departamento de Biologia, Centro de Estudos do Ambiente e Mar, Universidade de Aveiro Aveiro 3810-193, Portugal"}]},{"given":"Susana","family":"Silva","sequence":"additional","affiliation":[{"name":"Departamento de Biologia, Centro de Estudos do Ambiente e Mar, Universidade de Aveiro Aveiro 3810-193, Portugal"}]},{"given":"Victor","family":"Quintino","sequence":"additional","affiliation":[{"name":"Departamento de Biologia, Centro de Estudos do Ambiente e Mar, Universidade de Aveiro Aveiro 3810-193, Portugal"}]},{"given":"Ana Maria","family":"Rodrigues","sequence":"additional","affiliation":[{"name":"Departamento de Biologia, Centro de Estudos do Ambiente e Mar, Universidade de Aveiro Aveiro 3810-193, Portugal"}]},{"given":"Karl","family":"Rhynas","sequence":"additional","affiliation":[{"name":"Quester Tangent Corp. Sidney, B.C., Canada V8L 5Y8"}]},{"given":"William T","family":"Collins","sequence":"additional","affiliation":[{"name":"Quester Tangent Corp. Sidney, B.C., Canada V8L 5Y8"}]}],"member":"286","published-online":{"date-parts":[[2003,1,1]]},"reference":[{"key":"2019081209465854000_b1","doi-asserted-by":"crossref","first-page":"156","DOI":"10.1006\/jmsc.2001.1126","article-title":"Acoustic classification of marine habitats in coastal Newfoundland","volume":"59","author":"Anderson","year":"2002","journal-title":"ICES Journal of Marine Science"},{"key":"2019081209465854000_b2","first-page":"41","article-title":"Sediment analysis","volume-title":"Methods for the Study of Marine Benthos","author":"Buchanan","year":"1984"},{"key":"2019081209465854000_b3","doi-asserted-by":"crossref","first-page":"43","DOI":"10.1007\/BF00018894","article-title":"A comparison of methods of determining organic carbon in marine sediments with suggestions for a standard method","volume":"58","author":"Byers","year":"1978","journal-title":"Hydrobiologia"},{"key":"2019081209465854000_b4","volume-title":"PRIMER v5: User Manual\/Tutorial","author":"Clarke","year":"2001"},{"key":"2019081209465854000_b5","first-page":"83","article-title":"A digital approach to seabed classification","volume":"37","author":"Collins","year":"1996","journal-title":"Sea Technolology"},{"key":"2019081209465854000_b6","first-page":"369","article-title":"Acoustic classification of the sea floor to address essential fish habitat and marine protected area requirements","author":"Collins","year":"1998"},{"key":"2019081209465854000_b7","doi-asserted-by":"crossref","first-page":"825","DOI":"10.1006\/jmsc.2002.1198","article-title":"Acoustic classification of seabed habitat using the QTC VIEW\u2122 system","volume":"59","author":"Ellingsen","year":"2002","journal-title":"ICES Journal of Marine Science"},{"key":"2019081209465854000_b8","doi-asserted-by":"crossref","first-page":"339","DOI":"10.1016\/S0022-0981(02)00536-1","article-title":"Benthic biotopes remote sensing using acoustics","volume":"285\u2013286","author":"Freitas","year":"2003","journal-title":"Journal of Experimental Marine Biology and Ecology"},{"key":"2019081209465854000_b9","doi-asserted-by":"crossref","first-page":"939","DOI":"10.1006\/jmsc.1997.0220","article-title":"An assessment of the acoustic survey technique, RoxAnn, as a means of mapping seabed habitat","volume":"54","author":"Greenstreet","year":"1997","journal-title":"ICES Journal of Marine Science"},{"key":"2019081209465854000_b10","doi-asserted-by":"crossref","first-page":"1577","DOI":"10.1016\/S0278-4343(99)00020-5","article-title":"Comparison of RoxAnn and QTC-View acoustic bottom classification system performance for the Cairns area, Great Barrier Reef, Australia","volume":"19","author":"Hamilton","year":"1999","journal-title":"Continental Shelf Research"},{"key":"2019081209465854000_b11","doi-asserted-by":"crossref","first-page":"411","DOI":"10.1016\/S1054-3139(03)00006-7","article-title":"An overview of seabed mapping technologies in the context of marine habitat classification","volume":"60","author":"Kenny","year":"2003","journal-title":"ICES Journal of Marine Science"},{"key":"2019081209465854000_b12","first-page":"85","article-title":"Cluster order using clustering performance index rate, CPIR","author":"Kirlin","year":"2000"},{"key":"2019081209465854000_b13","doi-asserted-by":"crossref","first-page":"475","DOI":"10.1071\/MF99181","article-title":"Remote sensing of seabed types in the Australian South East Fishery; development and application of normal incident acoustic techniques and associated \u201cground truthing\u201d","volume":"52","author":"Kloser","year":"2001","journal-title":"Marine and Freshwater Research"},{"key":"2019081209465854000_b14","volume-title":"MVSP: A Multivariate Statistical Package for Windows, Ver. 3.1. User's Manual","author":"Kovach","year":"1999"},{"key":"2019081209465854000_b15","doi-asserted-by":"crossref","first-page":"1085","DOI":"10.1139\/f02-096","article-title":"Acoustic seabed classification: improved statistical method","volume":"59","author":"Legendre","year":"2002","journal-title":"Canadian Journal of Fisheries and Aquatic Science"},{"key":"2019081209465854000_b16","doi-asserted-by":"crossref","first-page":"371","DOI":"10.1007\/BF00391620","article-title":"Comparative measurement of the redox potential of marine sediments as a rapid means of assessing the effect of organic pollution","volume":"53","author":"Pearson","year":"1979","journal-title":"Marine Biology"},{"key":"2019081209465854000_b17","first-page":"30","article-title":"Shallow-water bottom classification. High speed echo-sampling captures detail for precise sediment","volume":"5","author":"Preston","year":"2001","journal-title":"Hydro International"},{"key":"2019081209465854000_b18","first-page":"1123","article-title":"The strengh of correlations between geotechnical variables and acoustic classifications","volume":"3","author":"Preston","year":"1999","journal-title":"Proceedings of Oceans '99"},{"key":"2019081209465854000_b19","article-title":"QTC IMPACT. Acoustic Seabed Classification","author":"QTC","year":"2002"},{"key":"2019081209465854000_b20","first-page":"535","article-title":"Sediment alterations in response to marine outfall operation off Lisbon, Portugal: a sediment quality triad study","volume":"34","author":"Quintino","year":"2001","journal-title":"Journal of Coastal Research"},{"key":"2019081209465854000_b21","doi-asserted-by":"crossref","first-page":"181","DOI":"10.1016\/S0165-7836(00)00309-X","article-title":"The effect of slope and vessel speed on the performance of a single beam acoustic seabed classification system","volume":"54","author":"von Szalay","year":"2002","journal-title":"Fisheries Research"}],"container-title":["ICES Journal of Marine Science"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/academic.oup.com\/icesjms\/article-pdf\/60\/3\/599\/29119736\/60-3-599.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,8,12]],"date-time":"2019-08-12T13:47:40Z","timestamp":1565617660000},"score":1,"resource":{"primary":{"URL":"https:\/\/academic.oup.com\/icesjms\/article\/60\/3\/599\/659720"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2003,1,1]]},"references-count":21,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2003,1,1]]},"published-print":{"date-parts":[[2003,1,1]]}},"URL":"https:\/\/doi.org\/10.1016\/s1054-3139(03)00061-4","relation":{},"ISSN":["1095-9289","1054-3139"],"issn-type":[{"value":"1095-9289","type":"electronic"},{"value":"1054-3139","type":"print"}],"subject":[],"published-other":{"date-parts":[[2003]]},"published":{"date-parts":[[2003,1,1]]}}}