Nitrogen limitation of net primary productivity in terrestrial ecosystems is globally distributed

Ecology
David S LeBauer, Kathleen K Treseder

Abstract

Our meta-analysis of 126 nitrogen addition experiments evaluated nitrogen (N) limitation of net primary production (NPP) in terrestrial ecosystems. We tested the hypothesis that N limitation is widespread among biomes and influenced by geography and climate. We used the response ratio (R approximately equal ANPP(N)/ANPP(ctrl)) of aboveground plant growth in fertilized to control plots and found that most ecosystems are nitrogen limited with an average 29% growth response to nitrogen (i.e., R = 1.29). The response ratio was significant within temperate forests (R = 1.19), tropical forests (R = 1.60), temperate grasslands (R = 1.53), tropical grasslands (R = 1.26), wetlands (R = 1.16), and tundra (R = 1.35), but not deserts. Eight tropical forest studies had been conducted on very young volcanic soils in Hawaii, and this subgroup was strongly N limited (R = 2.13), which resulted in a negative correlation between forest R and latitude. The degree of N limitation in the remainder of the tropical forest studies (R = 1.20) was comparable to that of temperate forests, and when the young Hawaiian subgroup was excluded, forest R did not vary with latitude. Grassland response increased with latitude, but was independent of temperature an...Continue Reading

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Citations

Apr 14, 2010·Oecologia·Laura G PerryEdward F Redente
May 27, 2011·Oecologia·Steven S PerakisJana E Compton
Aug 2, 2012·Environmental Science & Technology·Marie-Eve JeanJean-Philippe Bellenger
Jun 16, 2011·Nature Communications·Z Y YuanPeter B Reich
Dec 5, 2008·Proceedings of the National Academy of Sciences of the United States of America·S V OllingerH P Schmid
Jan 2, 2009·Proceedings of the National Academy of Sciences of the United States of America·William H Schlesinger
Dec 6, 2012·Proceedings of the National Academy of Sciences of the United States of America·Yuri KnyazikhinRanga B Myneni
Jan 9, 2013·Proceedings of the National Academy of Sciences of the United States of America·Susan L Ustin
Jul 19, 2013·Proceedings of the National Academy of Sciences of the United States of America·Cory C ClevelandSteven W Running
Aug 23, 2011·Tree Physiology·Lucas A CernusakBenjamin L Turner
Jul 6, 2012·Proceedings. Biological Sciences·Z Y Yuan, Han Y H Chen
Jun 2, 2010·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Mark LeeCharles Marsh
May 29, 2013·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Peter M VitousekCory C Cleveland
Sep 1, 2012·Science·George A Kowalchuk
Mar 31, 2010·Ecological Applications : a Publication of the Ecological Society of America·R BobbinkW De Vries

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