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The post-fire response of an obligate seeding Triodia species (Poaceae) in the fire-prone Kimberley, north-west Australia

Armstrong, Graeme and Legge, Sarah (2011). The post-fire response of an obligate seeding Triodia species (Poaceae) in the fire-prone Kimberley, north-west Australia. International Journal of Wildland Fire,20(8):974-981.

Document type: Journal Article

IRMA ID 83093774xPUB160
Title The post-fire response of an obligate seeding Triodia species (Poaceae) in the fire-prone Kimberley, north-west Australia
Author Armstrong, Graeme
Legge, Sarah
Journal Name International Journal of Wildland Fire
Publication Date 2011
Volume Number 20
Issue Number 8
ISSN 1049-8001   (check CDU catalogue open catalogue search in new window)
Start Page 974
End Page 981
Total Pages 8
Place of Publication Australia
Publisher C S I R O Publishing
HERDC Category C1 - Journal Article (DIISR)
Abstract Triodia spp. have been described as behaving functionally as a shrub because above ground biomass accumulates slowly over time culminating as the dominant vegetation layer. When combined with high flammability, little seed dormancy and conflicting evidence for fire induced seed germination, obligate seeding species may be more vulnerable to short fire intervals than resprouting species. This study investigated the post-fire regeneration response of the obligate seeder Triodia sp. nov. (aff. T. schinzii Henrard) in the fire prone Kimberley, Western Australia. Adult plants were destroyed by fire in experimental plots to assess the degree of regeneration from either resprouting or germination from seed due to fire. To control for the removal of adults, without fire, plants were pulled out by hand in replicate plots. Germination of Triodia sp. nov. seed from the soil seed bank was strongly induced by fire. Establishment and survival of seedlings through the first dry season was high with a small proportion of individuals flowering at this time. It is concluded that Triodia sp. nov. is resilient to the short fire intervals experienced in the Kimberley where it is a successful localised species.
DOI http://dx.doi.org/10.1071/WF10130   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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