caa a22 4500 606219889 CHVBK 20210128101120.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s11104-015-2532-3 doi (NATIONALLICENCE)springer-10.1007/s11104-015-2532-3 Plasticity in nitrogen form uptake and preference in response to long-term nitrogen fertilization [Elektronische Daten] [Ming-Hua Song, Li-Li Zheng, Katharine Suding, Tan-Feng Yin, Fei-Hai Yu] Background and aims: Niche complementarity arising from divergence in resource use is an important mechanism underlying species coexistence. We hypothesized fertilization with different N forms would generate plastic divergence among species with regard to their N form uptake and preference. Methods: In the eighth year of a long-term N fertilization experiment in an alpine meadow on the Tibetan plateau, we labeled 11 common plant species with ammonium-15N or nitate-15N in subplots without fertilization (control) or fertilized with 7.5gNm−2yr−1 in the form of ammonium, nitrate, or ammonium nitrate to trace N form uptake. Results: Depending on species, fertilization with nitrate or ammonium nitrate had positive, negative or neutral effects on NO3-N uptake rate, although ammonium fertilization showed little impact. By contrast, fertilization with any N form had little impact on NH4-N uptake rate. Consequently, effects of nitrate fertilization and ammonium nitrate fertilization on relative N form preference diverged among the species and the functional groups (grasses, sedges, legumes and forbs). Conclusions: Alpine plant species can diverge in N form uptake and preference in response to long-term N fertilization, and such divergence may contribute to species coexistence after long-term fertilization. Springer International Publishing Switzerland, 2015 Plasticity nationallicence N chemical forms nationallicence Ammonium nationallicence Nitrate nationallicence Long-term N addition nationallicence Alpine meadow nationallicence Song Ming-Hua Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, A11, Datun Road, Chaoyang District, 100101, Beijing, China aut Zheng Li-Li School of Nature Conservation, Beijing Forestry University, 35 Qinghua East Road, Haidian District, 100083, Beijing, China aut Suding Katharine Department of Ecology & Evolutionary Biology, Institute of Arctic and Alpine Research, University of Colorado, 1560 30th St., 80303, Boulder, CO, USA aut Yin Tan-Feng Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, A11, Datun Road, Chaoyang District, 100101, Beijing, China aut Yu Fei-Hai School of Nature Conservation, Beijing Forestry University, 35 Qinghua East Road, Haidian District, 100083, Beijing, China aut Plant and Soil Springer International Publishing 394/1-2(2015-09-01), 215-224 0032-079X 394:1-2<215 2015 394 11104 https://doi.org/10.1007/s11104-015-2532-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2532-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Song Ming-Hua Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, A11, Datun Road, Chaoyang District, 100101, Beijing, China aut NATIONALLICENCE 700 1- Zheng Li-Li School of Nature Conservation, Beijing Forestry University, 35 Qinghua East Road, Haidian District, 100083, Beijing, China aut NATIONALLICENCE 700 1- Suding Katharine Department of Ecology & Evolutionary Biology, Institute of Arctic and Alpine Research, University of Colorado, 1560 30th St., 80303, Boulder, CO, USA aut NATIONALLICENCE 700 1- Yin Tan-Feng Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, A11, Datun Road, Chaoyang District, 100101, Beijing, China aut NATIONALLICENCE 700 1- Yu Fei-Hai School of Nature Conservation, Beijing Forestry University, 35 Qinghua East Road, Haidian District, 100083, Beijing, China aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 394/1-2(2015-09-01), 215-224 0032-079X 394:1-2<215 2015 394 11104