• Corpus ID: 34526434

Tansley review Plant responses to low [ CO 2 ] of the past

  title={Tansley review Plant responses to low [ CO 2 ] of the past},
  author={Laci M Gerhart and Joy K Ward},
During the Last Glacial Maximum (LGM; 18 000–20 000 yr ago) and previous glacial periods, atmospheric [CO2] dropped to 180–190 ppm, which is among the lowest concentrations that occurred during the evolution of land plants. Modern atmospheric CO2 concentrations ([CO2]) are more than twice those of the LGM and 45% higher than pre-industrial concentrations. Since CO2 is the carbon source for photosynthesis, lower carbon availability during glacial periods likely had a major impact on plant… 

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