Nitrogen limitation of net primary productivity in terrestrial ecosystems is globally distributed
Lebauer, DS; Treseder, KK
HERO ID
98204
Reference Type
Journal Article
Year
2008
Language
English
PMID
| HERO ID | 98204 |
|---|---|
| In Press | No |
| Year | 2008 |
| Title | Nitrogen limitation of net primary productivity in terrestrial ecosystems is globally distributed |
| Authors | Lebauer, DS; Treseder, KK |
| Journal | Ecology |
| Volume | 89 |
| Issue | 2 |
| Page Numbers | 371-379 |
| 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 and precipitation. These results suggest that the global N and C cycles interact strongly and that geography can mediate ecosystem response to N within certain biome types. |
| Doi | 10.1890/06-2057.1 |
| Pmid | 18409427 |
| Wosid | WOS:000254124200010 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Keyword | carbon; meta-analysis; net primary production; nitrogen; nitrogen deposition; nitrogen fertilization; resource limitation |
| Is Peer Review | Yes |