{"refrec":{"BRefID":143040,"RR":"<b>Van Hoey, G.; Guilini, K.; Rabaut, M.; Vincx, M.; Degraer, S.</b> (2009). Ecological implications of the presence of the tube-building polychaete <i>Lanice conchilega</i> on soft-bottom benthic ecosystems, <b><i>in</i></b>: Rabaut, M. <i><i>Lanice conchilega</i>, fisheries and marine conservation: Towards an ecosystem approach to marine management.</i> pp. 235-254","BEntID":121867,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":", <b><i>in</i></b>: Rabaut, M. <i><i>Lanice conchilega</i>, fisheries and marine conservation: Towards an ecosystem approach to marine management.</i> pp. 235-254","DocTypID":17,"DocType":"Book chapters","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Van Hoey, G.; Guilini, K.; Rabaut, M.; Vincx, M.; Degraer, S.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Van Hoey, G. <i>et al.</i>","Englishabstract":"The common tube-building polychaete <i>Lanice conchilega</i> is known as a habitat structuring species and can form dense aggregations. The effects of <i>L. conchilega</i> on the surrounding benthic community have received little attention, especially in subtidal areas. Therefore, the presence of <i>L. conchilega</i> in different habitats in the North Sea and its effect on the abundance, species richness, diversity and community structure in these habitats are evaluated in the present paper, based on data from the ICES North Sea Benthos Survey of 2000. <i>Lanice conchilega</i> has a wide geographical distribution and a low habitat specialization, but optimally occurs in shallow fine sands. In the present study, the presence of <i>L. conchilega</i> resulted in a density increase and a significant (positive) correlation of the benthos density with the density of <i>L. conchilega</i>. Furthermore, the species richness (number of species) increased with increasing density of <i>L. conchilega</i>. This trend was, however, not consistent: the number of species reached more or less an asymptotic value or even decreased after reaching a critical density of <i>L. conchilega</i> (>500–1,000 ind/m²), as observed in shallow fine sands. The same overall pattern was detected concerning the expected number of species. The <i>N</i><sub>1</sub>-diversity index showed similar or slightly higher values in <i>L. conchilega</i> patches compared to patches without <i>L. conchilega</i>. From the results of the community analysis, it can be concluded that the species, which were responsible for the increase of the diversity, belonged to the overall species-pool of that habitat. The effects on density and diversity differed between the four discerned habitats (shallow muddy sand, shallow fine sand, shallow medium sand and deep fine sand), and were most pronounced in shallow fine sands. These patterns can be attributed to the habitat structuring capacity of <i>L. conchilega</i>. The mechanisms responsible for the increase of the habitat quality in patches of <i>L. conchilega</i> can be summarized as (1) changes in the hydrodynamics, (2) increases of the habitat stability and oxygen supply, and (3) a creation of habitat heterogeneity in a uniform environment. In this way, <i>L. conchilega</i> alters the habitat characteristics and affects other organisms, and can therefore even be considered as an ecosystem engineer. In other words, <i>L. conchilega</i> patches are responsible for an increased habitat quality in an otherwise uniform habitat, which results in a higher survival of the surrounding benthic species.","AbstractOtherLang":null,"BibLvlCode":"AM","StandardTitle":"Ecological implications of the presence of the tube-building polychaete <i>Lanice conchilega</i> on soft-bottom benthic ecosystems","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2009,"MonPub":null,"DateUpdate":"2018-07-19","DateCreate":"2010-01-12","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":{"AnaID":143040,"PubliDate":2009,"Pagination":"235-254","XtraPublOfAnaID":null,"ISBN":"978-90-8756-025-6","Volume":null,"Issue":null,"BRefMon":143014,"BRefMonRR":"<b>Rabaut, M.</b> (2009). <i>Lanice conchilega</i>, fisheries and marine conservation: Towards an ecosystem approach to marine management. PhD Thesis. Ghent University: Gent. 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