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| 090 | _aB-11322 | ||
| 245 | 1 | 0 | _aWas low atmospheric CO2 during the Pleistocene a limiting factor for the origin of agriculture? |
| 490 | 0 | _vGlobal Change Biology, 1, p.93-106, 1995 | |
| 520 | 3 | _aAgriculture 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 | |
| 650 | 1 | 4 | _aORIGIN OF AGRICULTURE |
| 650 | 1 | 4 | _aCO2 ENRICHMENT |
| 650 | 1 | 4 | _aCROP DOMESTICATION |
| 650 | 1 | 4 | _aGLOBAL CHANGE |
| 650 | 1 | 4 | _aNEOLITHIC TRANSITION |
| 650 | 1 | 4 | _aPHOTOSYNTHESIS |
| 700 | 1 | 2 | _aSage, R.F. |
| 856 | 4 | 0 |
_uhttps://drive.google.com/file/d/1yAqA4tZ3XzVeeQjC6vsE7jb1_oWqQHru/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx |
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