HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Oelmann, Y. Articles by Weisser, W. W. Search for Related Content PubMed Articles by Oelmann, Y. Articles by Weisser, W. W. Agricola Articles by Oelmann, Y. Articles by Weisser, W. W. Related Collections Nitrogen Nutrient Cycling Nutrient Management Soil Chemistry

Soil and Plant Nitrogen Pools as Related to Plant Diversity in an Experimental Grassland

^a Inst. of Ecology, Dep. of Soil Science, Berlin Univ. of Technology, Salzufer 11-12, D-10587 Berlin, Germany
^b Geographic Inst., Professorship of Soil Geography/Soil Science, Johannes Gutenberg Univ., Johann-Joachim-Becherweg 21, D-55128 Mainz, Germany
^c Inst. of Chemistry and Dynamics of the Geosphere, ICGIII Phytosphere Inst., Jülich Research Centre, D-52425 Jülich, Germany
^d Inst. of Plant Sciences, ETH Zentrum LFW C56, Universitätsstrasse 2, CH-8092 Zurich, Switzerland
^e Max Planck Inst. for Biogeochemistry, P.O. Box 100164, D-07701 Jena, Germany
^f Inst. of Ecology, Friedrich Schiller Univ. of Jena, Dornburger Straße 159, D-07743 Jena, Germany

View larger version (16K): [in this window] [in a new window]   Fig. 1. Mean concentrations of NO3– in KCl extracts of the different sampling dates for plots (A) with and without legumes and plots (B) with and without grasses. Data are presented as mean ± standard error.

View larger version (21K): [in this window] [in a new window]   Fig. 2. Relationship between species richness differentiated according to the presence of (A) legumes or (C) grasses, or functional group richness differentiated according to the presence (B) of legumes or (D) grasses, and concentrations of NO3– in KCl extracts in autumn 2003. Data are presented as mean ± standard error. Note that there is no 60-species mixture without legumes.

View larger version (19K): [in this window] [in a new window]   Fig. 3. Relationship between species richness differentiated according to the presence of (A) legumes or (C) grasses, or functional group richness differentiated according to the presence of (B) legumes or (D) grasses, and volume-weighted mean (vwm) concentrations of dissolved organic N (DON) in spring 2003. Data are presented as mean ± standard error. Note that there is no 60-species mixture without legumes.

View larger version (13K): [in this window] [in a new window]   Fig. 4. Relationship between species richness differentiated according to the respective sampling periods (A–C) and volume-weighted mean (vwm) concentrations of total dissolved N (TDN) and dissolved organic N (DON).

View larger version (24K): [in this window] [in a new window]   Fig. 5. Relationship between species richness differentiated according to the presence of (A) legumes or (C) grasses, or functional group richness differentiated according to the presence of (B) legumes or (D) grasses, and volume-weighted mean (vwm) concentrations of total dissolved N (TDN) in spring 2003. Data are presented as mean ± standard error. Note that there is no 60-species mixture without legumes.

View larger version (21K): [in this window] [in a new window]   Fig. 6. Relationship between species richness and mean N pools in plant mixture (aboveground) in May 2003 differentiated according to the presence of (A) legumes or (C) grasses, and functional group richness differentiated according to the presence of (B) legumes or (D) grasses. Data are presented as mean ± standard error. Note that there is no 60-species mixture without legumes.