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- Milchunas, Daniel G., et al. Show all 5 Authors
- Proceedings of the National Academy of Sciences of the United States of America 2007 v.104 no.37 pp. 14724
- elevated atmospheric gases; carbon dioxide; grasslands; steppes; plant ecology; community structure; shrubs; grasses; plant growth; environmental impact; community ecology; species diversity; vegetation cover; dry matter accumulation; Artemisia frigida; semiarid zones; botanical composition; Colorado
- ... A hypothesis has been advanced that the incursion of woody plants into world grasslands over the past two centuries has been driven in part by increasing carbon dioxide concentration, [CO₂], in Earth's atmosphere. Unlike the warm season forage grasses they are displacing, woody plants have a photosynthetic metabolism and carbon allocation patterns that are responsive to CO₂, and many have tap root ...
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