01720nam a2200241Ia 4500 MX-MdCICY 20260521091241.0 CICY B-11322 Was low atmospheric CO2 during the Pleistocene a limiting factor for the origin of agriculture? Global Change Biology, 1, p.93-106, 1995 Agriculture originated independently in many distinct regions at approximately the same time in human history. This synchrony in agricultural origins indicates that a global factor may have controlled the timing of the transition from foraging to foodproducing economies. The global factor may have been a rise in atmospheric CO2 from below 200 to near 270 ^mol mol"^ which occurred between 15,000 and 12,000 years ago. Atmospheric CO2 directly affects photosynthesis and plant productivity, with the largest proportional responses occurring below the current level of 350 )xmol mor^ In the late Pleistocene, CO2 levels near 200 (imol mol"^ may have been too low to support the level of productivity required for successful establishment of agriculture. Recent studies demonstrate that atmospheric CO2 increase from 200 to 270 ^.mol mor' stimulates photosynthesis and biomass productivity of C3 plants by 25 ORIGIN OF AGRICULTURE CO2 ENRICHMENT CROP DOMESTICATION GLOBAL CHANGE NEOLITHIC TRANSITION PHOTOSYNTHESIS Sage, R.F. https://drive.google.com/file/d/1yAqA4tZ3XzVeeQjC6vsE7jb1_oWqQHru/view?usp=drivesdk Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx Loc REF1 250602s9999 xx |||||s2 |||| ||und|d 21483 21483 0 0 Loc 0 0 F1 CICY CICY RE 2025-06-25 0 B-11322 2025-06-25 14:06:48 2025-06-25 REF1