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- Wilsey, Brian J.; Polley, H. Wayne
- Ecology 2004 v.85 no.10 pp. 2693
- perennials, etc ; grasslands; plant ecology; species diversity; biodiversity; prairies; primary productivity; carbon dioxide; gas exchange; extinction; community ecology; Texas; Show all 12 Subjects
- ... Biodiversity is declining worldwide from reductions in both species richness and evenness. Field experiments have shown that primary productivity is often reduced when richness of plant species is lowered. However, experiments testing richness effects have used evenness levels that are much higher than normally encountered in plant communities and have been based on the assumption that species ext ...