dc.contributor |
Morgan, J W |
|
dc.date.accessioned |
2011-12-10T16:16:10Z |
|
dc.date.available |
2011-12-10T16:16:10Z |
|
dc.date.issued |
2007 |
|
dc.identifier.citation |
The Rangeland Journal (2007) 29(1): 101-105 |
|
dc.identifier.issn |
1036-9872 |
|
dc.identifier.uri |
http://livestocklibrary.com.au/handle/1234/5204 |
|
dc.description.abstract |
The relationship between fire frequency (annual v. infrequent) and nitrogen (N) limitation to foliage production in a temperate native grassland community in western Victoria, Australia, was assessed over one growing season using a simple ammonium nitrate addition experiment. Fire history affected the magnitude of the vegetation responses to N addition. At the community level, mean live biomass in infrequently-burned grasslands declined by 20 � 8% in response to N addition. In contrast, mean biomass increased by 60 � 15% in annually-burned grasslands in response to N addition. Both grasses and forbs responded positively to N addition in annually-burned grasslands, with forbs responding more substantially than grasses. Foliage production in annually-burned native grasslands therefore appears to be constrained by N availability. The results of this study may have important implications for understanding species coexistence and invasion by non-native species in temperate native grasslands. |
|
dc.publisher |
CSIRO Publishing |
|
dc.source.uri |
http://www.publish.csiro.au/?act=view_file&file_id=RJ06046.pdf |
|
dc.subject |
biomass |
|
dc.subject |
N addition |
|
dc.subject |
resource availability |
|
dc.subject |
Themeda triandra |
|
dc.title |
Relationship between fire frequency and nitrogen limitation on foliage production in a native grassland community in Victoria, Australia |
|
dc.type |
Research |
|
dc.description.version |
Conference paper |
|
dc.identifier.volume |
29 |
|
dc.identifier.page |
101-105 |
|
dc.identifier.issue |
1 |
|