Small ponds also tend to be shallow, which means their terrestrial carbon loads are highly concentrated compared to larger lakes. (sciencedaily.com)
In any case I own enough forest to offset the fossil carbon load of many homes and am working on a land trust to protect it in perpetuity. (realclimate.org)
While the paper does not extend to the medieval maximum, from charcoal in lake bed studies it documents increased biomass burning and deforestation during agricultural and population expansion in the Neotropics from 2500 to 500 years BP, which would correspond with atmospheric carbon loading and global warming 1100 to 650 years BP. (orionmagazine.org)