Sure. They're an important and vital part of the world's ecosystem - just as, for example, you are. Anyhow, here are a few articles on this very subject:
http://www.google.com/#q=what+place+do+mosquitoes+have+in+the+ecosystem&spell=1&sa=X&ei=clXjUdDRJ_ay4AOW8oDIDw&ved=0CCgQvwUoAA&bav=on.2,or.r_qf.&bvm=bv.48705608,d.dmg&fp=43343ac3cffa9ab0&biw=1024&bih=605
The articles you linked to all seem to reach the same conclusion, that, aside from being a food source for various other creatures, mosquitoes have no redeeming value and could be wiped from the face of the earth with no ill effects.
Not sure how that translates to "an important and vital part of the world's ecosystem".
jus' sayin'
hopefully my lack of skydiving credentials is irrelevant to this particular issue.