{"refrec":{"BRefID":26375,"RR":"<b>Smith, D.H.; Madsen, J.D.; Dickson, K.L.; Beitinger, T.L.</b> (2002). Nutrient effects on autofragmentation of <i>Myriophyllum spicatum</i>. <i>Aquat. Bot. 74(1)</i>: 1-17","BEntID":26375,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Aquat. Bot. 74(1)</i>: 1-17","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Smith, D.H.; Madsen, J.D.; Dickson, K.L.; Beitinger, T.L.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Smith, D.H. <i>et al.</i>","Englishabstract":"The effects sediment nitrogen and water potassium concentrations have on autofragment production of Eurasian watermilfoil (<i>Myriophyllum spicatum</i> L.) were studied utilizing 16 mesocosms with four mesocosms per treatment. Results indicated that a sediment nitrogen concentration of 0.04mg NH<sub>3-</sub>Ng<sup>-1</sup> sediment significantly increased autofragment production. Plants grown for 12 weeks in this low nitrogen regime produced 1616 autofragments while high nitrogen treated plants (0.55mg NH<sub>3-</sub> Ng<sup>-1</sup> sediment) produced 712 autofragments. Potassium concentration did not significantly alter autofragment production. Up to 50% of autofragments abscised from parent plants grown under low nitrogen conditions compared to 12% or less when grown under high nitrogen conditions. Within 10 days of initiating adventitious roots, 16-38% of autofragments broke away from parent plants grown under low nitrogen regimes compared to 10% of autofragments grown under high nitrogen regimes. Plant components (inflorescence, autofragment, stem and root crown) contained equivalent percentages of total nonstructural carbohydrates (TNCs) by the 9th week of growth; however, low nitrogen treated plants were producing more autofragment and stem biomass. The combination of these factors indicates that Eurasian watermilfoil grown in a low nitrogen environment directs more resources toward autofragment and stem production, allowing colonization of new potential sites. In contrast, when grown in a high nitrogen environment, this species directs more of its energy toward stem and root crown development, allowing for regrowth and colonization in the immediate area.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Nutrient effects on autofragmentation of <i>Myriophyllum spicatum</i>","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":"Eurasian watermilfoil; <i>Myriophyllum spicatum</i>; Autofragment; Nitrogen; Vegetative reproduction; Propagules","Notes":null,"AnaPub":2002,"MonPub":null,"DateUpdate":"2003-04-17","DateCreate":"2002-08-19","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":26375,"PubliDate":2002,"Pagination":"1-17","XtraPublOfAnaID":null,"ISBN":null,"Volume":"74","Issue":"1","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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