Interactions Among Western Ragweed and Other Sandhills Species After Drought
Autor: | Brian K. Northup, Patrick E. Reece, Joe E. Brummer, Lowell E. Moser, Ann E. Koehler |
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Rok vydání: | 2004 |
Předmět: | |
Zdroj: | Rangeland Ecology & Management. 57:583-589 |
ISSN: | 1551-5028 1550-7424 |
DOI: | 10.2111/1551-5028(2004)057[0583:iawrao]2.0.co;2 |
Popis: | Interannual differences in yield and species composition of herbaceous vegetation on semiarid rangelands are common and often related to variations in precipitation regime. Interspecific interactions that occur after drought-induced population fluxes of western ragweed (Ambrosia psilostachya D.C.) were evaluated by removing western ragweed or associated species from 1-m 2 quadrats at weekly intervals beginning in early May, June, or July 1991 or 1992 on high-seral sandhills prairie in Nebraska. The composite of peak standing crops for ragweed and each group of associated species was 77% greater during May‐October 1991 |
Databáze: | OpenAIRE |
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