TY - JOUR A1 - Sharma, S. A1 - Williams, D. G. T1 - Carbon and oxygen isotope analysis of leaf biomass reveals contrasting photosynthetic responses to elevated CO2 near geologic vents in Yellowstone National Park JO - Biogeosciences J1 - BG VL - 6 IS - 1 SP - 25 EP - 31 Y1 - 2009/01/07 PB - Copernicus Publications SN - 1726-4189 UR - https://bg.copernicus.org/articles/6/25/2009/ L1 - https://bg.copernicus.org/articles/6/25/2009/bg-6-25-2009.pdf DO - 10.5194/bg-6-25-2009 ER -