Can the Results of Biodiversity-Ecosystem Productivity Studies Be Translated to Bioenergy Production?
Biodiversity experiments show that increases in plant diversity can lead to greater biomass production, and some researchers suggest that high diversity plantings should be used for bioenergy production. However, many methods used in past biodiversity experiments are impractical for bioenergy plantings. For example, biodiversity experiments often use intensive management such as hand weeding to maintain low diversity plantings and exclude unplanted species, but this would not be done for bioenergy plantings. Also, biodiversity experiments generally use high seeding densities that would be too expensive for bioenergy plantings. Here we report the effects of biodiversity on biomass production from two studies of more realistic bioenergy crop plantings in southern Michigan, USA. One study involved comparing production between switchgrass (Panicum virgatum) monocultures and species-rich prairie plantings on private farm fields that were managed similarly to bioenergy plantings. The other study was an experiment where switchgrass was planted in monoculture and in combination with increasingly species-rich native prairie mixtures. Overall, we found that bioenergy plantings with higher species richness did not produce more biomass than switchgrass monocultures. The lack of a positive relationship between planted species richness and production in our studies may be due to several factors. Non-planted species (weeds) were notmore »
- Univ. of Nebraska, Omaha, NE (United States). Dept. of Biology
- Michigan State Univ., Hickory Corners, MI (United States). W.K. Kellogg Biological Station. Plant Biology Dept.
- Publication Date:
- OSTI Identifier:
- Grant/Contract Number:
- AC05‐76RL01830; FC02-07ER64494; DEB 1027253
- Accepted Manuscript
- Journal Name:
- PLoS ONE
- Additional Journal Information:
- Journal Volume: 10; Journal Issue: 9; Journal ID: ISSN 1932-6203
- Public Library of Science
- Research Org:
- Univ. of Nebraska, Omaha, NE (United States); Michigan State Univ., Hickory Corners, MI (United States)
- Sponsoring Org:
- USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23); USDOE Office of Energy Efficiency and Renewable Energy (EERE); National Science Foundation (NSF) (United States) Univ. of Nebraska (United States); Michigan State Univ. (United States)
- Country of Publication:
- United States
- 59 BASIC BIOLOGICAL SCIENCES; seeds; biomass; planting; species diversity; biodiversity; bioenergy; invasive species; grasses
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