Demise of the dingo

Letnic M. & Crowther M. S. (2013) Patterns in the abundance of kangaroo populations in arid Australia are consistent with the Exploitation Ecosystems Hypothesis. Oikos 122, 761-9.

Aim: 
Kangaroo abundance should increase with increasing primary productivity in a two-trophic link system where dingoes are rare; and that kangaroo abundance would remain relatively constant regardless of primary productivity in a three trophic link system where dingoes are abundant.
Type of Study: 
Manipulative experiment
Key Results: 
kangaroo populations are primarilytop–down regulated in the presence of dingoes, but are bottom–up regulated in the absence of dingoes
Treatments: 
Dingo control vs un-controlled properties
Response: 
Kangaroo populations not influenced by artifical water points, but predation by dingoes.
Models: 
Model selection
Reviewer: 
Aaron Greenville
Locations: 
Central Australia
Response variable : 
index of abundance
Replication: 
9 paired sites: 24–30 track detection stations at 1 km intervals. 25 and 30 dung transects at each sub-site, with the transects spaced at 1 km intervals.
Ecosystem: 
Arid zone
Full Reference: 
Letnic M. & Crowther M. S. (2013) Patterns in the abundance of kangaroo populations in arid Australia are consistent with the Exploitation Ecosystems Hypothesis. Oikos 122, 761-9.