{"refrec":{"BRefID":98321,"RR":"<b>James, C.S.; Eaton, J.W.; Hardwick, K.</b> (2006). Responses of three invasive aquatic macrophytes to nutrient enrichment do not explain their observed field displacements. <i>Aquat. Bot. 84(4)</i>: 347-353. <a href=\"http://dx.doi.org/10.1016/j.aquabot.2006.01.002\" target=\"_blank\">http://dx.doi.org/10.1016/j.aquabot.2006.01.002</a>","BEntID":93675,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Aquat. Bot. 84(4)</i>: 347-353. <a href=\"https://dx.doi.org/10.1016/j.aquabot.2006.01.002\" target=\"_blank\">https://dx.doi.org/10.1016/j.aquabot.2006.01.002</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":1,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"James, C.S.; Eaton, J.W.; Hardwick, K.","OrigTitleTranslFlag":0,"Authorstringtrunc":"James, C.S. <i>et al.</i>","Englishabstract":"In some eutrophic inland waters the invasive aquatic macrophyte <i>Elodea canadensis</i> has been displaced by the morphologically similar species <i>Elodea nuttallii</i> and subsequently <i>E. nuttallii</i> by <i>Lagarosiphon major</i>. We investigated whether differences in the responses of these species and their associated epiphytic floras to five nutrient loadings in the range 30&#x2013;480&nbsp;&#x3bc;g&nbsp;L<sup>&#x2212;1</sup>&nbsp;P and 0.21&#x2013;3.36&nbsp;mg&nbsp;L<sup>&#x2212;1</sup>&nbsp;N could explain their observed field displacements. The mean relative growth rate (RGR) of <i>E. nuttallii</i> (RGR 0.086&nbsp;d<sup>&#x2212;1</sup>) was significantly higher than that of either <i>E. canadensis</i> (RGR 0.066&nbsp;d<sup>&#x2212;1</sup>) or <i>L. major</i> (RGR 0.063&nbsp;d<sup>&#x2212;1</sup>). All three species exhibited a plastic morphological response to increasing nutrient loadings with mean root weights reduced at the highest nutrient loading compared with the lowest loading by 33, 75 and 56% for <i>E. canandensis</i>, <i>E. nuttallii</i> and <i>L. major</i>, respectively. Mean tissue nitrogen concentrations increased significantly with increasing nutrient loading, with concentrations in <i>E. canadensis</i> (1.83&#x2013;2.10% dry wt.) significantly higher than either <i>E. nuttallii</i> (1.56&#x2013;2.10% dry wt.) or <i>L. major</i> (1.50&#x2013;1.90% dry wt.). Tissue phosphorus concentrations likewise increased with increasing nutrient loadings although this trend was not as pronounced. Epiphyte biomass per unit photosynthetic surface area (PSA) was significantly higher on <i>E. canadensis</i> than on either <i>E. nuttallii</i> or <i>L. major</i>, but did not increase significantly with increasing nutrient loadings. We suggest that differences in species responses to nutrient enrichment do not explain the species displacements observed in the field. <i>E. nuttallii</i>'s higher RGR may, regardless of nutrient supply, enable this species to shade out neighbouring species and outpace the establishment of algae on its leaves.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Responses of three invasive aquatic macrophytes to nutrient enrichment do not explain their observed field displacements","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":"invasive; submersed macrophyte; eutrophication; species displacement","OtherDescriptors":null,"Notes":null,"AnaPub":2006,"MonPub":null,"DateUpdate":"2018-05-17","DateCreate":"2006-04-26","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000236617300010","VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":98321,"PubliDate":2006,"Pagination":"347-353","XtraPublOfAnaID":null,"ISBN":null,"Volume":"84","Issue":"4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42195,"SerRR":"Aquatic Botany. Elsevier Science: Tokyo; Oxford; New York; London; Amsterdam.  ISSN 0304-3770; e-ISSN 1879-1522","StandardTitleSer":"Aquatic Botany","ISSN":"0304-3770","AbbrevSer":"Aquat. 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