{"refrec":{"BRefID":287897,"RR":"<b>Renz, J.R.; Forster, S.</b> (2013). Are similar worms different? A comparative tracer study on bioturbation in the three sibling species <i>Marenzelleria arctia, M. viridis</i>, and <i>M. neglecta</i> from the Baltic Sea. <i>Limnol. Oceanogr. 58(6)</i>: 2046-2058. <a href=\"https://dx.doi.org/10.4319/lo.2013.58.6.2046\" target=\"_blank\">https://dx.doi.org/10.4319/lo.2013.58.6.2046</a>","BEntID":279922,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Limnol. Oceanogr. 58(6)</i>: 2046-2058. <a href=\"https://dx.doi.org/10.4319/lo.2013.58.6.2046\" target=\"_blank\">https://dx.doi.org/10.4319/lo.2013.58.6.2046</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Renz, J.R.; Forster, S.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Renz, J.R.; Forster, S.","Englishabstract":"The invasive spionid polychaetes of the genus <i>Marenzelleria</i> spp., consisting of the three sibling species <i>M. neglecta</i>, <i>M. viridis</i>, and <i>M. arctia</i>, has been found in the Baltic Sea since the 1980s. Because of difficulties in species identification, little is known about species-dependent sediment reworking and solute transport. The closely related species are apparently similar in feeding and sediment-dwelling behavior, but size and burrowing depth indicate differences in bioturbation and the biogeochemical consequences thereof. To investigate these potential differences, a tracer experiment with artificial particles (luminophores) and solute tracer (bromide) was conducted. Polychaetes were identified to species level using a molecular genetic key. Modeled results show that all three species display markedly low particle reworking rates with biodiffusion coefficients (<i>Db</i>) of 1.76 cm<sup>2</sup> yr<sup>−1</sup> (<i>M. viridis</i>) and 0.07 cm<sup>2</sup> yr<sup>−1</sup> (<i>M. neglecta</i>) at an abundance of 1273 individuals m<sup>−2</sup> and 0.44 cm<sup>2</sup> yr<sup>−1</sup> (<i>M. arctia</i>) at twice that abundance. Nonlocal transport coefficients are negligible in all cases. Solute transport by <i>M. neglecta</i> and <i>M. viridis</i> are more similar to one another than to <i>M. arctia</i>, whose solute transport mode is much more diffusive in character (10.9-fold enhanced diffusivity with nonlocal irrigation coefficients [<i>α</i>] of 55.3 yr<sup>−1</sup>) than that of the two other species, which affect tracer distributions in the sediment predominantly through a nonlocal, advective transport mode (<i>α</i> of 108.9 yr<sup>−1</sup> <i>M. viridis</i> and 130.9 yr<sup>−1</sup> <i>M. neglecta</i>). Thus, a functional grouping of the sibling species in terms of bioirrigation is not recommended.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Are similar worms different? A comparative tracer study on bioturbation in the three sibling species <i>Marenzelleria arctia, M. viridis</i>, and <i>M. neglecta</i> from the Baltic Sea","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-21 01:32:35.783603","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2013,"MonPub":null,"DateUpdate":"2018-02-13","DateCreate":"2017-08-11","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000327395400012","VABBcode":null,"OpenAcc":0,"DOI":"10.4319/lo.2013.58.6.2046"},"refs":null,"anarec":{"AnaID":287897,"PubliDate":2013,"Pagination":"2046-2058","XtraPublOfAnaID":null,"ISBN":null,"Volume":"58","Issue":"6","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43511,"SerRR":"Limnology and Oceanography. American Society of Limnology and Oceanography: Waco, Tex., etc.  ISSN 0024-3590; e-ISSN 1939-5590","StandardTitleSer":"Limnology and Oceanography","ISSN":"0024-3590","AbbrevSer":"Limnol. 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