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Mineral nutrient relations in the aquatic carnivorous plant Utricularia australis and its investment in carnivory
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SYSNO ASEP 0313304 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Mineral nutrient relations in the aquatic carnivorous plant Utricularia australis and its investment in carnivory Překlad názvu Vztahy minerální výživy u vodní masožravé rostliny Utricularia australis a její investice do masožravosti Tvůrce(i) Adamec, Lubomír (BU-J) RID, ORCID Zdroj.dok. Fundamental and Applied Limnology : Archiv für Hydrobiologie - ISSN 1863-9135
Roč. 171, č. 3 (2008), s. 175-183Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova tissue nutrient content ; investment in carnivory ; mineral nutrient economy Vědní obor RIV EF - Botanika CEZ AV0Z60050516 - BU-J (2005-2011) DOI https://doi.org/10.1127/1863-9135/2008/0171-0175 Anotace The carnivorous plant Utricularia australis was sampled from 30 locations in the Czech Republic and its mineral nutrient economy was correlated with its carnivorous habit. Relationships were sought between mineral nutrient levels in the ambient water together with prey quantity captured in traps and N, P, K, Na, Ca, and Mg contents of shoot tissues, and the proportion of total plant biomass in traps (investment in carnivory). Even at very oligotrophic sites with low prey capture rates, shoot N and P content was always well above the level below which growth limitation could occur. Plants recycled at least 57 % of their N and 81 % of their P from senescent shoots, although they lost all of the K, Na, Ca, and Mg from senescing tissues. The investment in carnivory (23-61 %) positively correlated with CO2 concentration, but negatively with shoot N content. Thus, shoot N content acts as a key endogenous factor regulating investment in trap biomass through a negative feedback mechanism. Pracoviště Botanický ústav Kontakt Martina Bartošová, martina.bartosova@ibot.cas.cz, ibot@ibot.cas.cz, Tel.: 271 015 242 ; Marie Jakšová, marie.jaksova@ibot.cas.cz, Tel.: 384 721 156-8 Rok sběru 2009
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