Cite as:
Cárate, D.; Camenzind, T.; Leuschner, C. & Homeier, J. (2017): Contrasting species responses to continued nitrogen and phosphorus addition in tropical montane forest tree seedlings. Biotropica x, y-z

Resource Description

Title: Contrasting species responses to continued nitrogen and phosphorus addition in tropical montane forest tree seedlings
FOR816dw ID: 1698
Publication Date: 2017-11-22
License and Usage Rights: PAK 823-825 data user agreement. (
Resource Owner(s):
Individual: Daisy Cárate
Individual: Tessa Camenzind
Individual: Christoph Leuschner
Individual: Jürgen Homeier
Global changes in nutrient deposition rates are likely to have profound effects on plant communities, particularly in the nutrient-limited systems of the tropics. We studied the effects of increased nutrient availability on the seedlings of six tree species in montane forests of southern Ecuador in situ. After five years of continued N, P, or N+P addition, naturally grown seedlings of each of the two most common
species at each elevation (1000, 2000, and 3000 m asl) were harvested for analyses of leaf morphology, nutrient content, herbivory, and tissue biomass allocation. Most species showed increased foliar N and P concentrations after addition of each respective element. Leaf tissue N:P ratios of >20 in the control plants of all species suggest that P is more growth-limiting in these forests than N. Leaf
morphological responses to nutrient addition were species and nutrient specific, with some species (Hedyosmum purparescens, Graffenrieda emarginata) exhibiting increased specific leaf area (SLA), and others (Graffenrieda harlingii) increased leaf area ratios (LAR). Pouteria torta (1000 m) had lower SLA and LAR after P addition. Increased herbivory was only evident in G. emarginata (after N and N+P addition).
Only the species from 3000 m asl modified biomass allocation after nutrient addition. In general, N and N+P addition more strongly affected the species studied at the upper elevations, whereas P addition had a similar range of effects on the species at all elevations. We conclude that the responses of the studied tropical montane forest tree seedlings to chronic N and P addition are highly species-specific and that successful adaptation to increased nutrient availability will depend on species-specific morphological and physiological plasticity.
| seedlings | NUMEX | functional traits |
Literature type specific fields:
Journal: Biotropica
Volume: x
Page Range: y-z
Metadata Provider:
Individual: Jürgen Homeier
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