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Camenzind, T.; Homeier, J.; Dietrich, K.; Hempel, S.; Hertel, D.; Krohn, A.; Leuschner, C.; Oelmann, Y.; Olsson, P.A.; Suarez, J.P. & Rillig, M.C. (2016): Opposing effects of nitrogen versus phosphorus additions on mycorrhizal fungal abundance along an elevational gradient in tropical montane forests. Soil Biology & Biochemistry 94, 37-47
DOI: http://dx.doi.org/10.1016/j.soilbio.2015.11.011.

Resource Description

Title: Opposing effects of nitrogen versus phosphorus additions on mycorrhizal fungal abundance along an elevational gradient in tropical montane forests
FOR816dw ID: 1425
Publication Date: 2016-03-01
License and Usage Rights: PAK 823-825 data user agreement. (www.tropicalmountainforest.org/dataagreementp3.do) http://www.tropicalmountainforest.org/dataagreement.do
Resource Owner(s):
Individual: Tessa Camenzind
Contact:
Individual: Jürgen Homeier
Contact:
Individual: Karla Dietrich
Contact:
Individual: Stefan Hempel
Contact:
Individual: Dietrich Hertel
Contact:
Individual: Andreas Krohn
Contact:
Individual: Christoph Leuschner
Contact:
Individual: Yvonne Oelmann
Contact:
Individual: Pal Axel Olsson
Contact:
Individual: Juan Pablo Suarez
Contact:
Individual: Matthias C. Rillig
Contact:
Abstract:
Studies in temperate systems provide evidence that the abundance of arbuscular mycorrhizal fungal (AMF) depends on soil nutrient availability, which is mainly explained in the context of resource stoichiometry and differential plant biomass allocation. We applied this concept to an understudied ecosystem – tropical montane forest – analyzing root and AMF abundance along an elevational gradient with decreasing nutrient availability, combined with responses to nitrogen (N) versus phosphorus (P) additions. At three sites from 1000 to 3000 m above sea-level we analyzed fine root length, AMF root colonization as well as extraradical AMF biomass (neutral lipid fatty acid 16:1?5, hyphal length and spore counts) in a nutrient manipulation experiment. We found a significant increase in root length as well as intra- and extraradical AMF abundance with elevation. Overall, P additions significantly increased, whereas N additions decreased AMF abundance, with differential though nonsystematic changes along the elevational gradient. Strongest effects were clearly observed at the intermediate site. These findings suggest a general dependency of roots and AMF on nutrient availability, though responses to N and P additions differed from previous studies in temperate systems. In the context of future nutrient depositions, results suggest diverging responses of AMF abundance depending on site characteristics.
Keywords:
| NUMEX | Bombuscaro | AM fungi | arbuscular mycorrhiza | nutrient cycle | Nutrient deposition |
Literature type specific fields:
ARTICLE
Journal: Soil Biology & Biochemistry
Volume: 94
Page Range: 37-47
Metadata Provider:
Individual: Tessa Camenzind
Contact:
Online Distribution:
Download File: http://www.tropicalmountainforest.org/publications.do?citid=1425

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