Leafy Spurge (Euphorbia esula) Control with Aphthona spp. Affects Seedbank Composition and Native Grass Reestablishment
| Autor: | Dean Cline, Donald R. Kirby, Chelsea J. Juricek, Rodney G. Lym |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Invasive Plant Science and Management. 1:120-132 |
| ISSN: | 1939-747X 1939-7291 |
| DOI: | 10.1614/ipsm-07-003.1 |
| Popis: | Aphthona spp. flea beetles have established and reduced the density of leafy spurge in much of the western United States. One way to measure the long-term impact and effectiveness of a weed control program is by monitoring the changes in the seedbank over time. The change in leafy spurge stem density and seed in the seedbank were evaluated 5 yr after Aphthona spp. were released to control this weed in the Little Missouri National Grasslands in southwestern North Dakota. Leafy spurge density and seed in both loamy overflow and loamy ecological sites decreased, whereas desirable (high-seral) forbs increased 5 yr after the biological control agents were released. Leafy spurge topgrowth was reduced from an average of over 200 stems/m2 to less than 8 stems/m2 in the most densely infested sites, and leafy spurge seed was reduced from an average of 68% of the seedbank to only 14% in both ecological sites. High-seral forb seed increased by over 300% in the seedbank, which indicated the floristic quality ... |
| Databáze: | OpenAIRE |
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