{"refrec":{"BRefID":59015,"RR":"<b>Marion, L.; Paillisson, J.-M.</b> (2003). A mass balance assessment of the contribution of floating-leaved macrophytes in nutrient stocks in an eutrophic macrophyte-dominated lake. <i>Aquat. Bot. 75(3)</i>: 249-260. <a href=\"http://dx.doi.org/10.1016/s0304-3770(02)00177-8\" target=\"_blank\">http://dx.doi.org/10.1016/s0304-3770(02)00177-8</a>","BEntID":56610,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Aquat. Bot. 75(3)</i>: 249-260. <a href=\"https://dx.doi.org/10.1016/s0304-3770(02)00177-8\" target=\"_blank\">https://dx.doi.org/10.1016/s0304-3770(02)00177-8</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":1,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Marion, L.; Paillisson, J.-M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Marion, L.; Paillisson, J.-M.","Englishabstract":"In this study we examine the contribution of three floating-leaved macrophyte species, <i>Nymphaea alba, Trapa natans</i> and <i>Nymphoides peltata</i> (covering about 700-750 ha), in the N and P stocks in a shallow eutrophic lake (4000-6300 ha) during a 3-year period (1995-1997). The monthly nutrient standing stocks in the above-ground structures of the plants were derived from biomass, nutrient content and area covered by each plant species during the growth period. These N and P quantities were compared to the net nutrient inputs of the lake waters from the catchment area recorded in the winter (water discharging phase), preceding the vegetation period. N and P contents reached high values for the three species (2.16-3.23% N and 0.29-0.68% P) showing the ability of the plants to accumulate large nutrient contents. Despite significant annual fluctuations in nutrient contents and biomass, not always in the same way for each floating-leaved macrophyte, and changes in the area they covered, the maximum monthly P stocks in the plants were globally uniform between the 3 years (7.10-8.85 tonnes). Maximum values for N ranged from 40.85 to 54.55 tonnes in summer. The vast beds of <i>N. alba</i> (until 75% of the total area in 1997), contributed largely to these annual nutrient stocks (50-72% and 46-70%, respectively, for N and P). Whereas the nutrient stocks estimated in the plants during the biomass peak represented little proportions of the annual net flux of N in the lake waters (3.35-5.00%), they reached high proportions for P sometimes exceeding the annual net loading of P in the lake according to years (16.80-156.25%). These results suggest that the nutrient-enriched sediments of the lake (6-53 and 2-6 times the net annual P and N inputs) probably compensate for annual variations in the external nutrient loading, notably for P, and floating-leaved macrophytes are likely not limited when the inputs from the catchment area are small.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"A mass balance assessment of the contribution of floating-leaved macrophytes in nutrient stocks in an eutrophic macrophyte-dominated lake","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2025-07-02 08:33:14.980000","timezone_type":1,"timezone":"+00:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"nutrients; floating-leaved macrophytes; shallow lakes; biomass","OtherDescriptors":null,"Notes":null,"AnaPub":2003,"MonPub":null,"DateUpdate":"2018-05-17","DateCreate":"2004-03-31","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000181434200005","VABBcode":null,"OpenAcc":1,"DOI":"10.1016/s0304-3770(02)00177-8"},"refs":null,"anarec":{"AnaID":59015,"PubliDate":2003,"Pagination":"249-260","XtraPublOfAnaID":null,"ISBN":null,"Volume":"75","Issue":"3","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42195,"SerRR":"Aquatic Botany. 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