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Title: Plant community responses to stand‐level nutrient fertilization in a secondary tropical dry forest

Abstract

Abstract The size of the terrestrial carbon (C) sink is mediated by the availability of nutrients that limit plant growth. However, nutrient controls on primary productivity are poorly understood in the geographically extensive yet understudied tropical dry forest biome. To examine how nutrients influence above‐ and belowground biomass production in a secondary, seasonally dry tropical forest, we conducted a replicated, fully factorial nitrogen (N) and phosphorus (P) fertilization experiment at the stand scale in Guanacaste, Costa Rica. The production of leaves, wood, and fine roots was monitored through time; root colonization by mycorrhizal fungi and the abundance of N‐fixing root nodules were also quantified. In this seasonal forest, interannual variation in rainfall had the largest influence on stand‐level productivity, with lower biomass growth under drought. By contrast, aboveground productivity was generally not increased by nutrient addition, although fertilization enhanced growth of individual tree stems in a wet year. However, root growth increased markedly and consistently under P addition, significantly altering patterns of stand‐level biomass allocation to above‐ vs. belowground compartments. Although nutrients did not stimulate total biomass production at the community scale, N‐fixing legumes exhibited a twofold increase in woody growth in response to added P, accompanied by a dramaticmore » increase in the abundance of root nodules. These data suggest that the relationship between nutrient availability and primary production in tropical dry forest is contingent on both water availability and plant functional diversity.« less

Authors:
 [1];  [1];  [2];  [3]
  1. Departments of Ecology, Evolution, and Behavior and Plant and Microbial Biology University of Minnesota Saint Paul Minnesota 55108 USA
  2. Department of Biology and Ecology Center Utah State University Logan Utah 84321 USA
  3. Departments of Ecology, Evolution, and Behavior and Plant and Microbial Biology University of Minnesota Saint Paul Minnesota 55108 USA, Smithsonian Tropical Research Institute Panamá República de Panamá
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1507200
Resource Type:
Publisher's Accepted Manuscript
Journal Name:
Ecology
Additional Journal Information:
Journal Name: Ecology Journal Volume: 100 Journal Issue: 6; Journal ID: ISSN 0012-9658
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
United States
Language:
English

Citation Formats

Waring, Bonnie G., Pérez‐Aviles, Daniel, Murray, Jessica G., and Powers, Jennifer S. Plant community responses to stand‐level nutrient fertilization in a secondary tropical dry forest. United States: N. p., 2019. Web. doi:10.1002/ecy.2691.
Waring, Bonnie G., Pérez‐Aviles, Daniel, Murray, Jessica G., & Powers, Jennifer S. Plant community responses to stand‐level nutrient fertilization in a secondary tropical dry forest. United States. https://doi.org/10.1002/ecy.2691
Waring, Bonnie G., Pérez‐Aviles, Daniel, Murray, Jessica G., and Powers, Jennifer S. Mon . "Plant community responses to stand‐level nutrient fertilization in a secondary tropical dry forest". United States. https://doi.org/10.1002/ecy.2691.
@article{osti_1507200,
title = {Plant community responses to stand‐level nutrient fertilization in a secondary tropical dry forest},
author = {Waring, Bonnie G. and Pérez‐Aviles, Daniel and Murray, Jessica G. and Powers, Jennifer S.},
abstractNote = {Abstract The size of the terrestrial carbon (C) sink is mediated by the availability of nutrients that limit plant growth. However, nutrient controls on primary productivity are poorly understood in the geographically extensive yet understudied tropical dry forest biome. To examine how nutrients influence above‐ and belowground biomass production in a secondary, seasonally dry tropical forest, we conducted a replicated, fully factorial nitrogen (N) and phosphorus (P) fertilization experiment at the stand scale in Guanacaste, Costa Rica. The production of leaves, wood, and fine roots was monitored through time; root colonization by mycorrhizal fungi and the abundance of N‐fixing root nodules were also quantified. In this seasonal forest, interannual variation in rainfall had the largest influence on stand‐level productivity, with lower biomass growth under drought. By contrast, aboveground productivity was generally not increased by nutrient addition, although fertilization enhanced growth of individual tree stems in a wet year. However, root growth increased markedly and consistently under P addition, significantly altering patterns of stand‐level biomass allocation to above‐ vs. belowground compartments. Although nutrients did not stimulate total biomass production at the community scale, N‐fixing legumes exhibited a twofold increase in woody growth in response to added P, accompanied by a dramatic increase in the abundance of root nodules. These data suggest that the relationship between nutrient availability and primary production in tropical dry forest is contingent on both water availability and plant functional diversity.},
doi = {10.1002/ecy.2691},
journal = {Ecology},
number = 6,
volume = 100,
place = {United States},
year = {Mon Apr 15 00:00:00 EDT 2019},
month = {Mon Apr 15 00:00:00 EDT 2019}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1002/ecy.2691

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Cited by: 26 works
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