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
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