""that small PS might be more active in cooler waters than small BG; making PS less susceptible to predation by cool water predators in early spring and late fall than small BG."" As a general rule you are partly correct. However amount of habitat, prey density, and normal behavior of the smaller PS-BG(prey) will make a difference as to how frequently the predator species encounters the prey. Each species of forage & predator tends to behave differently which is partly why it is a different species. Most meat eating predators are mostly opportunistic feeders - eating what they encounter most often and vulnerability of the prey item. The ecosystem is very complex and not generally mathematical nor black & white, nor simple - not yet until someone figures it out.

Your other questions are interesting and I am interested in what you find as answers. Keep us informed as your research progresses.

My initial answer to No2. is it depends on how many predators and PS-BG you have per area of water. IMO it is all about density, numbers balance, and habitat which applies to both terrestrial and aquatic ecosystems.

Last edited by Bill Cody; 01/14/17 12:14 PM.

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