caa a22 4500 475751809 CHVBK 20180406123526.0 cr unu---uuuuu 170329e20001201xx s 000 0 eng 10.1023/A:1026515116944 doi (NATIONALLICENCE)springer-10.1023/A:1026515116944 Site parameters, species composition, phytomass structure and element stores of a terra-firme forest in East-Amazonia, Brazil [Elektronische Daten] [Jens Mackensen, Madeleine Tillery-Stevens, Rudolf Klinge, Horst Fölster] Our objective was to asses site parameters, species diversity, phytomass structure and element stores of a Terra-firme forest prior to subsequent studies on nutrient fluxes during forest conversion. The soil was classified as a Xanthic Ferralsol, with a low effective cation exchange capacity (ECEC), low nutrient status and a deeply weathered solum. On 0.75ha, including all trees with a DBH >7cm, we identified 222 tree species belonging to 58 families. The above-ground phytomass was estimated using logarithmic regression analysis on two plots of 0.25ha each. Despite differences in forest structure and species composition, no major differences were found in terms of total phytomass or overall element stores. The mean living above-ground phytomass (LAGP) was 257Mgha−1, and mean quantity of litter 14Mgha−1, while dead wood contributed between 10 to 17% of total above-ground phytomass (32-56Mgha−1). Element store in LAGP was medium to high compared to other studies on tropical forest systems, while LAGP itself was comparatively low. Comparing 26 humid tropical forest stands recorded in literature, no correlation was found between LAGP and the amount of N and base cations stored in LAGP. However, a correlation between LAGP and P storage in LAGP (R 2=0.76) indicates the important role P may play in phytomass accumulation on zonal tropical soils. More then 60% of C, 20% of total N, 10% of total P and 66-88% of total K, Ca and Mg of the system (including the first meter of soil) were concentrated in the above-ground phytomass, including deadwood and litter. Consequently, phytomass destruction in form of forest conversion will lead to major element losses from the system. Kluwer Academic Publishers, 2000 Ferralsol nationallicence Living above-ground phytomass nationallicence Nutrient budget nationallicence Phytomass determination nationallicence Species composition nationallicence Tropical rain forest nationallicence Mackensen Jens aut Tillery-Stevens Madeleine aut Klinge Rudolf aut Fölster Horst aut Plant Ecology Kluwer Academic Publishers 151/2(2000-12-01), 101-119 1385-0237 151:2<101 2000 151 11258 https://doi.org/10.1023/A:1026515116944 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1026515116944 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mackensen Jens aut NATIONALLICENCE 700 1- Tillery-Stevens Madeleine aut NATIONALLICENCE 700 1- Klinge Rudolf aut NATIONALLICENCE 700 1- Fölster Horst aut NATIONALLICENCE 773 0- Plant Ecology Kluwer Academic Publishers 151/2(2000-12-01), 101-119 1385-0237 151:2<101 2000 151 11258 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer