{"refrec":{"BRefID":77330,"RR":"<b>Bini, L.M.; Thomaz, S.M.</b> (2005). Prediction of <i>Egeria najas</i> and <i>Egeria densa</i> occurrence in a large subtropical reservoir (Itaipu Reservoir, Brazil-Paraguay). <i>Aquat. Bot. 83(3)</i>: 227-238. <a href=\"https://dx.doi.org/10.1016/j.aquabot.2005.06.010\" target=\"_blank\">https://dx.doi.org/10.1016/j.aquabot.2005.06.010</a>","BEntID":72935,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Aquat. Bot. 83(3)</i>: 227-238. <a href=\"https://dx.doi.org/10.1016/j.aquabot.2005.06.010\" target=\"_blank\">https://dx.doi.org/10.1016/j.aquabot.2005.06.010</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Bini, L.M.; Thomaz, S.M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Bini, L.M.; Thomaz, S.M.","Englishabstract":"Incidence data of two native submerged aquatic macrophytes (<i>Egeria najas</i> Planch. and <i>Egeria densa</i> Planch.) were obtained in eight arms of a large (1350&nbsp;km<sup>2</sup>) subtropical reservoir (Itaipu Binacional Reservoir, Brazil-Paraguay). Environmental variables were measured simultaneously. Two large-scale surveys in the same localities identified by a global positioning system were carried out in April 1999 (<i>n</i>&nbsp;=&nbsp;235) and January 2001 (<i>n</i>&nbsp;=&nbsp;230). Logistic regressions were used to test the effect of environmental variables on the likelihood of <i>E. najas</i> and <i>E. densa</i> presence or absence. The two species were found under different environmental conditions: conductivity, light attenuation coefficient (<i>k</i>) and fetch were, in this order, the most important environmental variables in predicting the probability of occurrence of <i>E. najas</i>, whereas light attenuation coefficient was the main predictor of the probability of occurrence of <i>E. densa</i>. Thus, both species were negatively affected by the light attenuation coefficient. However, this effect was stronger in <i>E. densa</i>. The small area occupied by these species may be accounted for by the permanent high turbidity of Itaipu Reservoir. Additionally, the dominance of <i>E. najas</i> over of <i>E. densa</i> can be explained by the probably higher light requirements of <i>E. densa</i>. In other reservoirs worldwide, with higher water transparency, the opposite is frequently true. Between 1999 and 2001, an episodic water-level drawdown (5&nbsp;m) caused the disappearance of submerged vegetation. After water-level normalization, previous vegetation presence (in 1999) was an important predictor of the probability of occurrence of <i>E. najas</i> in 2001.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Prediction of <i>Egeria najas</i> and <i>Egeria densa</i> occurrence in a large subtropical reservoir (Itaipu Reservoir, Brazil-Paraguay)","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-05-30 01:31:10.838018","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2005,"MonPub":null,"DateUpdate":"2005-10-21","DateCreate":"2005-10-21","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000232564100007","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.aquabot.2005.06.010"},"refs":null,"anarec":{"AnaID":77330,"PubliDate":2005,"Pagination":"227-238","XtraPublOfAnaID":null,"ISBN":null,"Volume":"83","Issue":"3","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. Bot.","StandardTitleMon":null,"StartPage":227,"Pages":12,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":{"Line1":"CP 131, CEP 74001-970 Goiânia, GO","Email":"bini@icb.ufg.br","Line2":null,"EnvName":"Brasil"},"othpubs":null,"ownerships":null,"authors":[{"AutName":"Bini","Firstname":null,"Initials":"L.M.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":72935,"AutID":42234,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Thomaz","Firstname":null,"Initials":"S.M.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":72935,"AutID":42233,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":null,"litstyles":null,"thespers":null,"arch2discl":null,"SERpubls":[{"PublName":"Elsevier Science","City":"Tokyo; Oxford; New York; London; Amsterdam"}],"MONpubls":null,"pictures":[],"thestermsPath":[{"ThesaurusTerm":"Regression analysis","ThestID":6844,"Acronym":"ASFA","ThesTermPath":"Analysis > Mathematical analysis > Statistical analysis > Regression analysis"},{"ThesaurusTerm":"Reservoirs","ThestID":81631,"Acronym":"CSA","ThesTermPath":"Reservoirs"},{"ThesaurusTerm":"Reservoirs","ThestID":97561,"Acronym":"TRT","ThesTermPath":"Reservoirs"},{"ThesaurusTerm":"Reservoirs","ThestID":138835,"Acronym":"CAB","ThesTermPath":"Structures > Freshwater structures > Reservoirs"}],"thestermsASFA":[{"ThesaurusTerm":"Regression analysis"},{"ThesaurusTerm":"Reservoirs"},{"ThesaurusTerm":"Reservoirs"},{"ThesaurusTerm":"Reservoirs"}],"taxtermsASFA":[{"TaxTerm":"Egeria densa"},{"TaxTerm":"Egeria najas"},{"TaxTerm":"Hydrocharitaceae"}],"geotermsASFA":null,"collections":null,"conf":null,"proj":null,"Physdatasets":null,"spcols":null,"doi":null,"publs":null,"serparttypes":null,"monauthors":null,"MParts":null,"SParts":null,"hLibs":null,"langs":[{"BEntID":72935,"AbstractFlag":-1,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"},{"BEntID":72935,"AbstractFlag":0,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"}],"urls":[{"URL":"https://dx.doi.org/10.1016/j.aquabot.2005.06.010","externalID":"10.1016/j.aquabot.2005.06.010","URLTypeCode":"DOI","URLID":110298,"URLTypID":13,"URLType":"DOI","URLPrefix":"http://dx.doi.org/"}],"thesterms":[{"ThesaurusTerm":"Regression analysis","ThestID":6844,"Acronym":"ASFA","ThesTypID":1,"ThesType":"ASFA Thesaurus List"},{"ThesaurusTerm":"Reservoirs","ThestID":81631,"Acronym":"CSA","ThesTypID":2,"ThesType":"CSA Technology Research Database Master Thesaurus"},{"ThesaurusTerm":"Reservoirs","ThestID":97561,"Acronym":"TRT","ThesTypID":3,"ThesType":"Transportation Research Thesaurus"},{"ThesaurusTerm":"Reservoirs","ThestID":138835,"Acronym":"CAB","ThesTypID":4,"ThesType":"CAB Thesaurus"}],"taxterms":[{"TaxTerm":"Egeria densa","AphiaID":null,"TaxtID":25179},{"TaxTerm":"Egeria najas","AphiaID":null,"TaxtID":25272},{"TaxTerm":"Hydrocharitaceae","AphiaID":143751,"TaxtID":35401}],"geoterms":null,"othterms":[{"OtherTerm":"Logistic regression","OthtID":3508}],"asfacodes":null,"asfa2codes":null,"thestermsFRIS":[{"ThesaurusTerm":"Regression analysis","DutchTerm":"Regressie-analyse","ThestID":6844,"Acronym":"ASFA","ThesTypID":1,"ThesType":"ASFA Thesaurus List"},{"ThesaurusTerm":"Reservoirs","DutchTerm":null,"ThestID":81631,"Acronym":"CSA","ThesTypID":2,"ThesType":"CSA Technology Research Database Master Thesaurus"},{"ThesaurusTerm":"Reservoirs","DutchTerm":null,"ThestID":97561,"Acronym":"TRT","ThesTypID":3,"ThesType":"Transportation Research Thesaurus"},{"ThesaurusTerm":"Reservoirs","DutchTerm":null,"ThestID":138835,"Acronym":"CAB","ThesTypID":4,"ThesType":"CAB Thesaurus"}],"taxtermsFRIS":[{"TaxTerm":"Egeria densa","DutchTerm":null,"AphiaID":null,"TaxtID":25179},{"TaxTerm":"Egeria najas","DutchTerm":null,"AphiaID":null,"TaxtID":25272},{"TaxTerm":"Hydrocharitaceae","DutchTerm":null,"AphiaID":143751,"TaxtID":35401}],"geotermsFRIS":null,"othtermsFRIS":[{"OtherTerm":"Logistic regression","DutchTerm":null,"OthtID":3508}],"resmessage":"","complete":1,"sessions":{"newSesName":"Haspeslagh, Jan, J.","newSesDate":{"date":"2005-10-21 08:56:48.533000","timezone_type":3,"timezone":"Europe/Brussels"},"updSesName":"Haspeslagh, Jan, J.","updSesDate":{"date":"2005-10-21 08:56:48.533000","timezone_type":3,"timezone":"Europe/Brussels"}}}