Article a novel trophic cascade between cougars

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Assignment:

In the article "A novel trophic cascade between cougars and feral donkeys shapes desert wetlands"

What kind of experiment( modeling, obervational or manipulative) was performed?
What groups of animals were researchers looking to study trophic relationships?
What would occur if the puma population was reduced to protect sheep herds?
Why do Feral donkeys in areas with puma predaors tended to be diurnal?

Reference no: EM133415796

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