photosynthesis was measured by the 14c method on natural as well as low light adapted populations of chloroflexus ( a photosynthetic bacterium ) and synechococcus ( a blue-green alga ) from hot springs in yellowstone national park ( wyoming u.s.a. ) , to test the ability of these phototrophs to photosynthesize at a variety of light intensities .
C0043287
wyoming
C0041703
u.s.a