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Managing species across vast spatial areas: does one size fit all? Aaron C. Greenville, Glenda M. Wardle, Vuong Nguyen and Chris R. Dickman Desert Ecology Research Group School of Biological Sciences University of Sydney @AarontheEcolog

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Page 1: ESA15 Greenville

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

Page 2: ESA15 Greenville

Spatial dynamics

Introduction Methods Results Conclusion

Time

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Page 3: ESA15 Greenville

Spatial dynamics

Introduction Methods Results Conclusion

Time

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Page 4: ESA15 Greenville

Moran effect

Introduction Methods Results Conclusion

i = growth rate

Page 5: ESA15 Greenville

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

Page 6: ESA15 Greenville

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

Page 7: ESA15 Greenville

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• Synchronous

• Cross-correlations

1. Spatial structure

Introduction Methods Results Conclusion

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Page 8: ESA15 Greenville

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• Bayesian multivariate autoregressive state-space (MARSS) models

• Asynchronous

• Oasis

• Wildfire

• Productivity

1. Spatial structure

Introduction Methods Results Conclusion

Page 9: ESA15 Greenville

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.

Page 10: ESA15 Greenville

Introduction Methods Results Conclusion

Results:Photo by Bobby Tamayo

Sandy inland mouse, Ps.

hermannsburgensis, 12 g

Page 11: ESA15 Greenville

Introduction Methods Results Conclusion

Results:Photo by Bobby Tamayo

Sandy inland mouse, Ps.

hermannsburgensis, 12 g

Page 12: ESA15 Greenville

Introduction Methods Results Conclusion

Results:

-ve

Page 13: ESA15 Greenville

Introduction Methods Results Conclusion

Results:

+ve

Page 14: ESA15 Greenville

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

Page 15: ESA15 Greenville

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