Hi,
I like this interesting thread cause I often think about buying a DSLR. But: So far, I am convinced that the question about the right equipment is overestimated!
For good in situ pics, the camera first of all needs to be fast (no change of lenses), a (makro-)tele and a reliable spot-focus.
This problems are solved best by the approx. 300€ superzooms by Sony, Panasonic or Canon.
I think, for online-publication, picture editing is at least as important as the the camera equipment.
I know, that most experienced photgraphers will hate my comments, but until know, I don't think it is reasonable, to invest thousands of euros in equipment!