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Mechanisms for retention of bioavailable nitrogen in volcanic rainforest soils

Dries Huygens UGent, Pascal Boeckx UGent, Pamela Templer, Leandro Paulino, Oswald Van Cleemput UGent, Carlos Oyarzún, Christoph Müller and Roberto Godoy (2008) NATURE GEOSCIENCE. 1(8). p.543-548
abstract
Nitrogen cycling is an important aspect of forest ecosystem functioning. Pristine temperate rainforests have been shown to produce large amounts of bioavailable nitrogen, but despite high nitrogen turnover rates, loss of bioavailable nitrogen is minimal in these ecosystems. This tight nitrogen coupling is achieved through fierce competition for bioavailable nitrogen by abiotic processes, soil microbes and plant roots, all of which transfer bioavailable nitrogen to stable nitrogen sinks, such as soil organic matter and above-ground forest vegetation. Here, we use a combination of in situ N-15 isotope dilution and N-15 tracer techniques in volcanic soils of a temperate evergreen rainforest in southern Chile to further unravel retention mechanisms for bioavailable nitrogen. We find three processes that contribute significantly to nitrogen bioavailability in rainforest soils: heterotrophic nitrate production, nitrate turnover into ammonium and into a pool of dissolved organic nitrogen that is not prone to leaching loss, and finally, the decoupling of dissolved inorganic nitrogen turnover and leaching losses of dissolved organic nitrogen. Identification of these biogeochemical processes helps explain the retention of bioavailable nitrogen in pristine temperate rainforests.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
DISSOLVED ORGANIC-MATTER, SOUTHERN CHILE, POOL DILUTION, PLANTATION FORESTS, TEMPERATE FORESTS, NITRATE, N-15, NITRIFICATION, ECOSYSTEMS, IMMOBILIZATION
journal title
NATURE GEOSCIENCE
Nat. Geosci.
volume
1
issue
8
pages
543 - 548
Web of Science type
Article
Web of Science id
000258894600020
JCR category
GEOSCIENCES, MULTIDISCIPLINARY
JCR impact factor
99.999 (2008)
JCR rank
1/143 (2008)
JCR quartile
4 (2008)
ISSN
1752-0894
DOI
10.1038/ngeo252
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
525378
handle
http://hdl.handle.net/1854/LU-525378
date created
2009-03-19 11:02:52
date last changed
2016-12-19 15:43:44
@article{525378,
  abstract     = {Nitrogen cycling is an important aspect of forest ecosystem functioning. Pristine temperate rainforests have been shown to produce large amounts of bioavailable nitrogen, but despite high nitrogen turnover rates, loss of bioavailable nitrogen is minimal in these ecosystems. This tight nitrogen coupling is achieved through fierce competition for bioavailable nitrogen by abiotic processes, soil microbes and plant roots, all of which transfer bioavailable nitrogen to stable nitrogen sinks, such as soil organic matter and above-ground forest vegetation. Here, we use a combination of in situ N-15 isotope dilution and N-15 tracer techniques in volcanic soils of a temperate evergreen rainforest in southern Chile to further unravel retention mechanisms for bioavailable nitrogen. We find three processes that contribute significantly to nitrogen bioavailability in rainforest soils: heterotrophic nitrate production, nitrate turnover into ammonium and into a pool of dissolved organic nitrogen that is not prone to leaching loss, and finally, the decoupling of dissolved inorganic nitrogen turnover and leaching losses of dissolved organic nitrogen. Identification of these biogeochemical processes helps explain the retention of bioavailable nitrogen in pristine temperate rainforests.},
  author       = {Huygens, Dries and Boeckx, Pascal and Templer, Pamela and Paulino, Leandro and Van Cleemput, Oswald and Oyarz{\'u}n, Carlos and M{\"u}ller, Christoph and Godoy, Roberto},
  issn         = {1752-0894},
  journal      = {NATURE GEOSCIENCE},
  keyword      = {DISSOLVED ORGANIC-MATTER,SOUTHERN CHILE,POOL DILUTION,PLANTATION FORESTS,TEMPERATE FORESTS,NITRATE,N-15,NITRIFICATION,ECOSYSTEMS,IMMOBILIZATION},
  language     = {eng},
  number       = {8},
  pages        = {543--548},
  title        = {Mechanisms for retention of bioavailable nitrogen in volcanic rainforest soils},
  url          = {http://dx.doi.org/10.1038/ngeo252},
  volume       = {1},
  year         = {2008},
}

Chicago
Huygens, Dries, Pascal Boeckx, Pamela Templer, Leandro Paulino, Oswald Van Cleemput, Carlos Oyarzún, Christoph Müller, and Roberto Godoy. 2008. “Mechanisms for Retention of Bioavailable Nitrogen in Volcanic Rainforest Soils.” Nature Geoscience 1 (8): 543–548.
APA
Huygens, Dries, Boeckx, P., Templer, P., Paulino, L., Van Cleemput, O., Oyarzún, C., Müller, C., et al. (2008). Mechanisms for retention of bioavailable nitrogen in volcanic rainforest soils. NATURE GEOSCIENCE, 1(8), 543–548.
Vancouver
1.
Huygens D, Boeckx P, Templer P, Paulino L, Van Cleemput O, Oyarzún C, et al. Mechanisms for retention of bioavailable nitrogen in volcanic rainforest soils. NATURE GEOSCIENCE. 2008;1(8):543–8.
MLA
Huygens, Dries, Pascal Boeckx, Pamela Templer, et al. “Mechanisms for Retention of Bioavailable Nitrogen in Volcanic Rainforest Soils.” NATURE GEOSCIENCE 1.8 (2008): 543–548. Print.