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Release pattern for potassium from decomposing forest needle and leaf litter : long-term decomposition in a Scots pine forest

Release pattern for potassium from decomposing forest ...

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dc.contributor.author Laskowski, Ryszard [SAP11012037] pl
dc.contributor.author Berg, Bjoern pl
dc.contributor.author Johansson, Maj-Britt pl
dc.contributor.author McClaugherty, Chuck pl
dc.date.accessioned 2016-10-27T11:22:50Z
dc.date.available 2016-10-27T11:22:50Z
dc.date.issued 1995 pl
dc.identifier.issn 0008-4026 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/31806
dc.language eng pl
dc.title Release pattern for potassium from decomposing forest needle and leaf litter : long-term decomposition in a Scots pine forest pl
dc.type JournalArticle pl
dc.description.physical 2019-2027 pl
dc.abstract.other A general pattern for the dynamics of K in decomposing leaf and needle litters is described, based on 139 litter decomposition studies carried out in forests of northern and central Europe and the northern United States. We distinguished an initial phase of fast changes in K concentration and a later one in which the litter was close to humus and all K appeared to be immobile. In the initial phase the rate of change in K concentration was related to the initial K concentration: the higher the initial concentration, the faster its decrease and the faster the quantitative release of K. For litters with particularly low initial K concentrations, an increase in concentration was observed from the very start of decomposition. In the late phase a slight increase in concentrations was observed. After ca. 60% accumulated mass loss, K concentrations approached similar levels in various litter types, irrespective of the litter type and initial concentrations. We also estimated a theoretical equilibrium state at which no change in K concentration should be expected. According to our estimates these equilibrium concentrations ranged from approx. 0.8 mg/g dry mass of litter for Scots pine to approx. 1.2 mg/g dry mass for deciduous litter types. The estimate of K concentration in Scots pine litter in late decomposition stages was very close to that measured in the humus at the same site. Based on the wide variety of litter types and sites studied we conclude that the pattern suggested for K dynamics in decomposing litter holds at least for European coniferous forests north of the Alps and the Carpathians. pl
dc.description.volume 73 pl
dc.description.number 12 pl
dc.identifier.doi 10.1139/b95-216 pl
dc.identifier.eissn 1480-3305 pl
dc.title.journal Canadian Journal of Botany pl
dc.language.container eng pl
dc.affiliation Wydział Biologii i Nauk o Ziemi : Instytut Nauk o Środowisku pl
dc.subtype Article pl
dc.rights.original bez licencji pl

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