Global distribution and climate sensitivity of the tropical montane forest nitrogen cycle
dc.contributor.author | Gay, Justin D. | |
dc.contributor.author | Currey, Bryce | |
dc.contributor.author | Brookshire, E. N. Jack | |
dc.date.accessioned | 2023-01-04T19:22:38Z | |
dc.date.available | 2023-01-04T19:22:38Z | |
dc.date.issued | 2022-11 | |
dc.description.abstract | Tropical forests are pivotal to global climate and biogeochemical cycles, yet the geographic distribution of nutrient limitation to plants and microbes across the biome is unresolved. One long-standing generalization is that tropical montane forests are nitrogen (N)-limited whereas lowland forests tend to be N-rich. However, empirical tests of this hypothesis have yielded equivocal results. Here we evaluate the topographic signature of the ecosystem-level tropical N cycle by examining climatic and geophysical controls of surface soil N content and stable isotopes (δ15N) from elevational gradients distributed across tropical mountains globally. We document steep increases in soil N concentration and declining δ15N with increasing elevation, consistent with decreased microbial N processing and lower gaseous N losses. Temperature explained much of the change in N, with an apparent temperature sensitivity (Q10) of ~1.9. Although montane forests make up 11% of forested tropical land area, we estimate they account for >17% of the global tropical forest soil N pool. Our findings support the existence of widespread microbial N limitation across tropical montane forest ecosystems and high sensitivity to climate warming. | en_US |
dc.identifier.citation | Gay, J. D., Currey, B., & Brookshire, E. N. J. (2022). Global distribution and climate sensitivity of the tropical montane forest nitrogen cycle. Nature Communications, 13(1), 1-8. | en_US |
dc.identifier.issn | 2041-1723 | |
dc.identifier.uri | https://scholarworks.montana.edu/handle/1/17578 | |
dc.language.iso | en_US | en_US |
dc.publisher | Springer Nature | en_US |
dc.rights | cc-by | en_US |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_US |
dc.subject | climate sensitivity | en_US |
dc.subject | global climate | en_US |
dc.subject | tropical montane forest | en_US |
dc.subject | nitrogen cycle | en_US |
dc.title | Global distribution and climate sensitivity of the tropical montane forest nitrogen cycle | en_US |
dc.type | Article | en_US |
mus.citation.extentfirstpage | 1 | en_US |
mus.citation.extentlastpage | 8 | en_US |
mus.citation.journaltitle | Nature Communications | en_US |
mus.data.thumbpage | 2 | en_US |
mus.identifier.doi | 10.1038/s41467-022-35170-z | en_US |
mus.relation.college | College of Agriculture | en_US |
mus.relation.department | Land Resources & Environmental Sciences. | en_US |
mus.relation.university | Montana State University - Bozeman | en_US |
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