In:
Canadian Journal of Forest Research, Canadian Science Publishing, Vol. 43, No. 12 ( 2013-12), p. 1127-1136
Kurzfassung:
The aim of the present synthesis paper was to determine whether concentration changes and net release of manganese (Mn), as related to accumulated litter mass loss, are related to initial Mn concentration, mean annual temperature (MAT), mean annual precipitation (MAP), and tree genus or species. We also examined whether limit values for decomposition are related to initial litter Mn concentration, MAT, and MAP. We compiled 84 foliar litter decomposition studies, conducted mainly in boreal and temperate forest ecosystems, for which Mn dynamics had been well documented. Manganese concentration and amount were related to accumulated litter mass loss at each sampling time for each single study, as well as for (i) all studies combined (n = 748) and (ii) for species groups viz. Norway spruce (Picea abies (L.) Karst.) (n = 284), pine (Pinus) species (n = 330), and deciduous species (n = 214). The changes in Mn concentration with accumulated mass loss followed quadratic functions showing significantly higher Mn concentrations for Norway spruce vs. Scots pine (Pinus sylvestris L.) (p 〈 0.0001) and vs. deciduous species (p 〈 0.01), as well as significantly higher for deciduous species vs. Scots pine (p 〈 0.0001). Manganese release rates were different among the three species groups (p 〈 0.001). Still, rates were related to initial Mn concentrations (p 〈 0.001) for all litter types combined and for the three species groups. Norway spruce released Mn more slowly than pine and deciduous species. Rates were related to climatic factors for litter of Norway spruce and deciduous species. Limit values for all litter and for pine species separately were related to Mn (p 〈 0.001) and MAT (p 〈 0.001). For Norway spruce, limit values were related to MAT (p 〈 0.001) and MAP (p 〈 0.01). It appears that Norway spruce litter retains Mn more strongly in the litter structure, producing humus richer in Mn than does litter of pine and deciduous species.
Materialart:
Online-Ressource
ISSN:
0045-5067
,
1208-6037
DOI:
10.1139/cjfr-2013-0097
Sprache:
Englisch
Verlag:
Canadian Science Publishing
Publikationsdatum:
2013
ZDB Id:
1473096-0
SSG:
23
SSG:
12
