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The impact of exotic grass invasions on nitrogen cycling: a mini-review

Rossiter-Rachor, Natalie A., Setterfield, Samantha A., Douglas, Michael M., Hutley, Lindsay B. and Cook, Garry D. (2006). The impact of exotic grass invasions on nitrogen cycling: a mini-review. In: 15th Australian Weeds Conference, Adelaide, 24-28 September, 2006.

Document type: Conference Paper
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IRMA ID 76892420xPUB2
Author Rossiter-Rachor, Natalie A.
Setterfield, Samantha A.
Douglas, Michael M.
Hutley, Lindsay B.
Cook, Garry D.
Title The impact of exotic grass invasions on nitrogen cycling: a mini-review
Conference Name 15th Australian Weeds Conference
Conference Location Adelaide
Conference Dates 24-28 September, 2006
Conference Publication Title 15th Australian Weed conference: managing weeds in a changing climate
Place of Publication Adelaide, South Australia
Publisher Weed Management Society of South Australia
Publication Year 2006
ISBN 0 646 46344 6   (check CDU catalogue open catalogue search in new window)
Start Page 815
End Page 818
Total Pages 4
Field of Research 0502 - Environmental Science and Management
HERDC Category E1 - Conference Publication (DEST)
Abstract We reviewed the impact of exotic grass invasions on nitrogen cycling by examining studies that compared N cycling in native grass and exotic grass invaded habitats. A total of 30 studies were identified, with grass invasions affecting N cycling over awide range of habitats and regions. Eleven individual exotic grass species were identified as changing aspects of N cycling, with five more species occurring as exotic grass mixtures. While grass invasion commonly led to increases in biomass, there werefew consistent effects on plant and soil N pools and fluxes. There was often variation within a species between sites and years, suggesting that environmental factors such as soil moisture, soil type and native community composition may play a significant role in the magnitude and direction of the impact of exotic grasses on N. No studies examined the impact of exotic grass -mediated changes in fire regimes on N cycling - a potentially significant impact in many exotic grass invaded communities.
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Created: Fri, 12 Sep 2008, 08:35:25 CST by Administrator