Number of the records: 1
Mineral nutrient economy in competing species of Sphagnum mosses
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SYSNO ASEP 0323757 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Mineral nutrient economy in competing species of Sphagnum mosses Title Hospodaření konkurujících si rašeliníků s minerálními živinami Author(s) Hájek, Tomáš (BU-J) RID, ORCID
Adamec, Lubomír (BU-J) RID, ORCIDNumber of authors 2 Source Title Ecological Research - ISSN 0912-3814
Roč. 24, č. 2 (2009), s. 291-302Number of pages 12 s. Language eng - English Country JP - Japan Keywords exchange capacity ; species coexistence ; bog Subject RIV EF - Botanics R&D Projects KJB600050503 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z60050516 - BU-J (2005-2011) UT WOS 000263504100007 DOI 10.1007/s11284-008-0506-0 Annotation We studied how the main mineral nutrients are distributed between intracellular and extracellular exchangeable fractions in seven Sphagnum species of contrasting bog microhabitats. Ca occurred mainly in the exchangeable form while Mg, Na and particularly K, Al and N occurred inside cells. Hummock species with a higher cation exchange capacity (CEC) accumulated more exchangeable Ca2+, while the hollow ones with a lower CEC more Na+. Intracellular N and P were consistently lower in dying shoot parts, indicating the possibility of N and P reutilization. Where S. magellanicum formed mixed patches with S. angustifolium, it had the intracellular N content about 40% lower than if grew alone. This indicates unequal competition for N in those co occurring species. We assume that the high CEC enables sphagna to retain immediately the cationic nutrients from rainwater. This represents a mechanism of temporal extension of nutrient availability to subsequent slow intracellular nutrient uptake. Workplace Institute of Botany Contact 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 Year of Publishing 2009
Number of the records: 1