caa a22 4500 467885931 CHVBK 20180406152734.0 cr unu---uuuuu 170328e20060801xx s 000 0 eng 10.1007/s10021-005-0016-7 doi (NATIONALLICENCE)springer-10.1007/s10021-005-0016-7 Determinants of Leaf Litter Nutrient Cycling in a Tropical Rain Forest: Soil Fertility Versus Topography [Elektronische Daten] [Tana Wood, Deborah Lawrence, Deborah Clark] We investigated the influence of landscape-level variation in soil fertility and topographic position on leaf litter nutrient dynamics in a tropical rain forest in Costa Rica. We sampled across the three main edaphic conditions (ultisol slope, ultisol plateau, and inceptisol) to determine the effect of soil nutrients on leaf litter nutrient concentrations while controlling for topography, and to examine topographic effects while controlling for soil nutrients. Both leaf litter macronutrient [phosphorus (P), nitrogen (N), sulfur (S), calcium (Ca), potassium (K), magnesium (Mg)] and micronutrient concentrations were quantified throughout a 4-year period. Leaf litter [P], [N] and [K] varied significantly among soil types. The variation in [P], [N], and [K] was explained by soil fertility alone. Leaf litter [S], [Ca], and [Mg] did not vary among the three soil types. Macronutrient (P, K, Mg, S, Ca) concentrations in the leaf litter were much less variable than those of Fe and Al. Lower variability in essential plant nutrients suggests a great deal of plant control over the amount of nutrients resorbed before senescense. Leaf litter macronutrient concentrations varied significantly over the 4-year period, but the temporal variation did not differ among the three edaphic types as anticipated. Hence, although the magnitude of nutrient fluxes may be controlled by local factors such as soil fertility, temporal patterns are likely regulated by a common environmental variable such as precipitation or temperature. Springer Science+Business Media, Inc., 2006 cations nationallicence edaphic nationallicence leaf litter nationallicence nutrients nationallicence phosphorus nationallicence soil fertility nationallicence topography nationallicence tropical rain forest nationallicence Wood Tana Department of Environmental Sciences, University of Virginia, P O Box 400123, 22904-4123, Charlottesville, Virginia, USA aut Lawrence Deborah Department of Environmental Sciences, University of Virginia, P O Box 400123, 22904-4123, Charlottesville, Virginia, USA aut Clark Deborah Department of Biology, University of Missouri-St. Louis, 8001 Natural Bridge Road, 63121, St. Louis, Missouri, USA aut Ecosystems Springer-Verlag; www.springer-ny.com 9/5(2006-08-01), 700-710 1432-9840 9:5<700 2006 9 10021 https://doi.org/10.1007/s10021-005-0016-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10021-005-0016-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wood Tana Department of Environmental Sciences, University of Virginia, P O Box 400123, 22904-4123, Charlottesville, Virginia, USA aut NATIONALLICENCE 700 1- Lawrence Deborah Department of Environmental Sciences, University of Virginia, P O Box 400123, 22904-4123, Charlottesville, Virginia, USA aut NATIONALLICENCE 700 1- Clark Deborah Department of Biology, University of Missouri-St. Louis, 8001 Natural Bridge Road, 63121, St. Louis, Missouri, USA aut NATIONALLICENCE 773 0- Ecosystems Springer-Verlag; www.springer-ny.com 9/5(2006-08-01), 700-710 1432-9840 9:5<700 2006 9 10021 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer