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Managing species across vast spatial areas: does one size fit all?
Aaron C. Greenville, Glenda M. Wardle, Vuong Nguyenand Chris R. Dickman
Desert Ecology Research GroupSchool of Biological Sciences
University of Sydney
@AarontheEcolog
Spatial dynamics
Introduction Methods Results Conclusion
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Spatial dynamics
Introduction Methods Results Conclusion
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Moran effect
Introduction Methods Results Conclusion
i = growth rate
Aims1. Spatial synchrony in rainfall
2. Spatial structure of small mammal populations– Moran effect?
2. Do small mammals respond in the same way to extrinsic factors?
Introduction Methods Results Conclusion
Study species
Photo by Bobby Tamayo
Sandy inland mouse, Ps.
hermannsburgensis, 12 g
Lesser hairy-footed dunnart,
Sminthopsis youngsoni, 10 gNingaui, Ningaui ridei, 8 g
Dasyurid marsupials:
Rodents:
Introduction Methods Results Conclusion
Mulgara, Dasycercus
blythi, 100 g
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• Synchronous
• Cross-correlations
1. Spatial structure
Introduction Methods Results Conclusion
Distance
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• Bayesian multivariate autoregressive state-space (MARSS) models
• Asynchronous
• Oasis
• Wildfire
• Productivity
1. Spatial structure
Introduction Methods Results Conclusion
2. Covariates
Introduction Methods Results Conclusion
• Synchronous: 1-state MARSS model with covariates.
• Non-synchronous: Four sub-population structures compared with covariates in each MARSS model.
Introduction Methods Results Conclusion
Results:Photo by Bobby Tamayo
Sandy inland mouse, Ps.
hermannsburgensis, 12 g
Introduction Methods Results Conclusion
Results:Photo by Bobby Tamayo
Sandy inland mouse, Ps.
hermannsburgensis, 12 g
Introduction Methods Results Conclusion
Results:
-ve
Introduction Methods Results Conclusion
Results:
+ve
Conclusion• One size does not
fit all!
• Need to know the biology for each species
Introduction Methods Results Conclusion
Photo by Bobby Tamayo
Sandy inland mouse, Ps.
hermannsburgensis, 12 g
Synchronous Asynchronous
Acknowledgements• Bobby Tamayo, Dave Nelson and the DERG team.• All our volunteers.• Bush Heritage Australia.• Bedourie Hotel.• ARC, LTERN, TERN, APA and Paddy Pallin Science Grant.
Volunteer info: www.desertecology.edu.auFor more: www.AarontheEcolog.wordpress.com
@AarontheEcolog