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Cross-site comparison of herbivore impact on nitrogen availability in grasslands: the role of plant nitrogen concentration. / Bakker, E.S.; Knops, J.M.H.; Milchunas, D.G.; Ritchie, M.E.; Olff, H.

In: Oikos, Vol. 118, No. 11, 2009, p. 1613-1622.

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Bakker, E.S. ; Knops, J.M.H. ; Milchunas, D.G. ; Ritchie, M.E. ; Olff, H. / Cross-site comparison of herbivore impact on nitrogen availability in grasslands: the role of plant nitrogen concentration. In: Oikos. 2009 ; Vol. 118, No. 11. pp. 1613-1622.

BibTeX

@article{71c89a1994a64eed9528ac89a9c8df3b,
title = "Cross-site comparison of herbivore impact on nitrogen availability in grasslands: the role of plant nitrogen concentration",
abstract = "Herbivores may influence the nitrogen (N) recycling rates and consequently increase or decrease the productivity of grasslands. Plant N concentration emerged as a critical parameter to explain herbivore effects from several conceptual models, which predict that herbivores decrease soil N availability when plant N concentration is low whereas they increase it when plant N concentration is high (Hobbs 1996, Ritchie et al. 1998, Pastor et al. 2006). However, a broader cross-site comparison among published studies to test these predictions is hampered by the different methodologies used to measure soil N availability or a proxy thereof, and a lack of measurements of plant N concentration. Therefore it remains unclear whether these model predictions are generally valid across a range of grasslands. We tested whether there is a relationship between plant N concentration and herbivore impact on soil N availability (measured with resin bags) with a study of replicate 6–8 year old exclosures (with an unfenced control) of vertebrate herbivores (>1 kg) established at each of seven grassland sites in North America and Europe. Contrary to model predictions, we found a negative relationship between the effect of herbivores on resin bag soil N availability and plant N concentration. Our study confir",
author = "E.S. Bakker and J.M.H. Knops and D.G. Milchunas and M.E. Ritchie and H. Olff",
note = "Reporting year: 2009 Metis note: 4561;CL; PDI ; AqE; file:///L:/Endnotedatabases/NIOOPUB/pdfs/PDFS2009\Bakker_ea_4561.pdf",
year = "2009",
doi = "10.1111/j.1600-0706.2009.17199.x",
language = "English",
volume = "118",
pages = "1613--1622",
journal = "Oikos",
issn = "0030-1299",
publisher = "John Wiley and Sons Ltd",
number = "11",

}

RIS

TY - JOUR

T1 - Cross-site comparison of herbivore impact on nitrogen availability in grasslands: the role of plant nitrogen concentration

AU - Bakker, E.S.

AU - Knops, J.M.H.

AU - Milchunas, D.G.

AU - Ritchie, M.E.

AU - Olff, H.

N1 - Reporting year: 2009 Metis note: 4561;CL; PDI ; AqE; file:///L:/Endnotedatabases/NIOOPUB/pdfs/PDFS2009\Bakker_ea_4561.pdf

PY - 2009

Y1 - 2009

N2 - Herbivores may influence the nitrogen (N) recycling rates and consequently increase or decrease the productivity of grasslands. Plant N concentration emerged as a critical parameter to explain herbivore effects from several conceptual models, which predict that herbivores decrease soil N availability when plant N concentration is low whereas they increase it when plant N concentration is high (Hobbs 1996, Ritchie et al. 1998, Pastor et al. 2006). However, a broader cross-site comparison among published studies to test these predictions is hampered by the different methodologies used to measure soil N availability or a proxy thereof, and a lack of measurements of plant N concentration. Therefore it remains unclear whether these model predictions are generally valid across a range of grasslands. We tested whether there is a relationship between plant N concentration and herbivore impact on soil N availability (measured with resin bags) with a study of replicate 6–8 year old exclosures (with an unfenced control) of vertebrate herbivores (>1 kg) established at each of seven grassland sites in North America and Europe. Contrary to model predictions, we found a negative relationship between the effect of herbivores on resin bag soil N availability and plant N concentration. Our study confir

AB - Herbivores may influence the nitrogen (N) recycling rates and consequently increase or decrease the productivity of grasslands. Plant N concentration emerged as a critical parameter to explain herbivore effects from several conceptual models, which predict that herbivores decrease soil N availability when plant N concentration is low whereas they increase it when plant N concentration is high (Hobbs 1996, Ritchie et al. 1998, Pastor et al. 2006). However, a broader cross-site comparison among published studies to test these predictions is hampered by the different methodologies used to measure soil N availability or a proxy thereof, and a lack of measurements of plant N concentration. Therefore it remains unclear whether these model predictions are generally valid across a range of grasslands. We tested whether there is a relationship between plant N concentration and herbivore impact on soil N availability (measured with resin bags) with a study of replicate 6–8 year old exclosures (with an unfenced control) of vertebrate herbivores (>1 kg) established at each of seven grassland sites in North America and Europe. Contrary to model predictions, we found a negative relationship between the effect of herbivores on resin bag soil N availability and plant N concentration. Our study confir

U2 - 10.1111/j.1600-0706.2009.17199.x

DO - 10.1111/j.1600-0706.2009.17199.x

M3 - Article

VL - 118

SP - 1613

EP - 1622

JO - Oikos

JF - Oikos

SN - 0030-1299

IS - 11

ER -

ID: 294032