EFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTH TEXAS
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EFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTH TEXAS
EFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTHTEXASA ThesisbyMAIA LYNN LIPSCHUTZSubmitted to the College of Graduate Studies Texas A EFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTH TEXASA&M University-Kingsville in partial fulfillment of the requirements for the degree ofMASTER OF SCIENCE42491Major Subject: Range and Wildlife ManagementEFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTHTEXASA ThesisbyMAIA LYNN LIPSCHUTZApproved as to style and content by:Leonard A. Bre EFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTH TEXASnnan. Ph.D.(Chairman of the Committee)Bart M. Ballard, Ph.D. (Member of Committee)David B. Wester, Ph.D. (Member of Committee)Scott E. Henke, Ph.D. (CEFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTH TEXAS
hair of Department)Dr. Mohamed Abdelrahman (Associate VP for Research and Graduate Studies)42491ABSTRACTEffects of Drought and Grazing on Land Bird PoEFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTHTEXASA ThesisbyMAIA LYNN LIPSCHUTZSubmitted to the College of Graduate Studies Texas A EFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTH TEXASing bird surveys were conducted on 7 properties belonging to 2 ranches in South Texas. Using these data 1 calculated temporal trends, and tested die effects of total May - April precipitation and cattle SUM king rate on avian abundanc e. Trends were calculated for each ranch, the East Foundation and EFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTH TEXAS King Ranch, individually due to different range and wildlife management practices. Total avian abundance increased significantly on the 3 East FoundaEFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTH TEXAS
tion properties between 2008 and 2015. During 39 breeding bird surveys, 16,441 individual birds of 88 species were recorded. Non-breeding bird surveysEFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTHTEXASA ThesisbyMAIA LYNN LIPSCHUTZSubmitted to the College of Graduate Studies Texas A EFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTH TEXASird abundance was stable on the 4 King Ranch properties between 2005 and 2013. A total of 19,162 individual birds of 87 species were recorded during 40 breeding bird surveys. The combined effect of livestock use and precipitation had a significant effect on total avian abundance on all King Ranch pr EFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTH TEXASoperties, and on the abundance of some individual species and groups.iiiDEDICATIONTo Mary, Ronnie, Patrick, and RainbowivACKNOWLEDGEMENTSDr. Leonard BEFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTH TEXAS
rennan, Mr. Tom Langschied, Dr. Fred Bryant, Dr. David Wester, Dr. Bart Ballard, Houston Livestock Show and Rodeo, East Foundation, King Ranch, Rene BEFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTHTEXASA ThesisbyMAIA LYNN LIPSCHUTZSubmitted to the College of Graduate Studies Texas A EFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTH TEXASng staff at CKWR1VEFFECTS OF DROUGHT AND GRAZING ON LAND BIRD POPULATIONS IN SOUTHTEXASA ThesisbyMAIA LYNN LIPSCHUTZSubmitted to the College of Graduate Studies Texas AGọi ngay
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