{"refrec":{"BRefID":205576,"RR":"<b>Krause, J.C.; Diesing, M.; Arlt, G.</b> (2010). The physical and biological impact of sand extraction: a case study of the western Baltic Sea. <i>J. Coast. Res. SI 51</i>: 215-226. <a href=\"https://dx.doi.org/10.2112/SI51-020.1\" target=\"_blank\">https://dx.doi.org/10.2112/SI51-020.1</a>","BEntID":197705,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>J. Coast. Res. SI 51</i>: 215-226. <a href=\"https://dx.doi.org/10.2112/SI51-020.1\" target=\"_blank\">https://dx.doi.org/10.2112/SI51-020.1</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Krause, J.C.; Diesing, M.; Arlt, G.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Krause, J.C. <i>et al.</i>","Englishabstract":"In autumn 1997, approximately 320,000 m³ of sand were extracted from a site located ca. 2.5 km off Wustrow, Germany, Western Baltic Sea. The physical impacts of dredging on the sea floor are assessed on the basis of side-scan sonar, sediment texture, and oxygen profile approaches. Benthic macrofaunal effects are analysed, in terms of species, abundance, and biomass (SAB), addressing the responses of sensitive and non-sensitive species. Seabed modification was patchy within the dredging site. Morphology, texture, and oxygen characteristics returned to pre-dredging conditions over most of the site, during the first year of post-dredging. A smaller part of the area deepened by ca. 5 m and caused by multiple dredge furrows, was altered more drastically. During the year following the extraction, a shift to finer sediments with a higher organic carbon content and reduced oxygen levels was observed, at this location. Sensitive benthic species abundance did not recover to pre-impact levels, within a year after dredging. Slow recovery of the sensitive species can be overlooked easily by common environmental assessment measures, such as the SAB approach. Related to benthic habitats, environmentally-sound dredging practices should consider the various impacts that the creation of deep pits can have on the seabed, and compared those of shallow and isolated furrows.  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Coastal Education and Research Foundation: Fort Lauderdale.  ISSN 0749-0208; e-ISSN 1551-5036","StandardTitleSer":"Journal of Coastal Research","ISSN":"0749-0208","AbbrevSer":"J. Coast. 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