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Fire Ecology and

Biodiversity


School of Ecosystem and Forest Sciences | Faculty of Science

University of Melbourne

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Opportunity for a masters/honours project on fire and flying insects

29/11/2016

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We have an exciting opportunity for a masters or honours student to examine how fire influences the ecology of flying insects in the Otway Ranges.

Flying insects (e.g. butterflies, moths, beetles, flies) are an important part of forest ecosystems. They contribute to ecosystem function through services such as pollination, provide a large food resource for vertebrate fauna, and are interesting in their own right.

This project is part of a larger study examining fire impacts on fauna, with all fieldwork and project costs covered.  

​If you are interested please contact
Alan York.
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How does fire affect pollination of a sexually deceptive orchid?

20/10/2016

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The effects of fire on pollination haven’t been explored in sexually deceptive systems. Sexually deceptive plants achieve pollination by mimicking the sex pheromone of female insects in order to attract male insects. These systems are highly specialised, with the orchid often being pollinated by a single insect species. 

In our new paper, we observed the frequency of pollinator visits to flowers of a sexually deceptive orchid, Caladenia tentaculata, and related it to the post-fire age class of heathy woodland in south-western Victoria.
 
We also related the number of the pollinator’s putative larval hosts (scarab beetles) captured at these sites to age class.  At the local scale, visitation was highest in recently burnt sites. At the landscape scale, positive associations were observed between (1) putative pollinator hosts and vegetation burnt 36–50 years ago, and (2) pollinator visitation and vegetation burnt more than 50 years ago. Local- and landscape-scale effects on visitation were synergistic, such that visitation was greatest when fire age was variable within the pollinator foraging range.

Brown, J., York, A. & Christie, F. (2016). Fire effects on pollination in a sexually-deceptive orchid. International Journal of Wildland Fire. 25: 888-895.
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Creswick
Victoria 3363

Phone +61 (0)3 5321 4300 or email us

Photos contributed by Holly Sitters, Bronwyn Hradsky, students of the Fire Ecology and Biodiversity Group, and remote cameras.
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