Forty years of landscape change in Attwater's Prairie Chicken habitat within the Coastal Prairie of Texas /
198 1, and 1990 were used. Potential prairie chicken habitat
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| Format: | Thesis eBook |
| Language: | English |
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[Place of publication not identified] :
[publisher not identified] ;
1996.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | 198 1, and 1990 were used. Potential prairie chicken habitat 29,343 ha to 9,355 ha in 1990. The number of prairie patches 3,23 5 m to 1, 3 67 m in 1992. The remaining lekking sites 3,240 ha Attwater Prairie Chicken National Wildlife Refuge. 5,868 ha to 446 ha over the same period. Coarse landscape Aerial photographs acquired at intervals from 1952 to 1990 Aerial photographs from 1952, 1964, 1982, and 1990 were used. an agricultural/mining area without any management plan. area is comprised of 161,000 ha of cropland, rangeland and Attwater's prairie chicken presence within the Coastal chickens abandoned portions of the landscape during this classified, digitized and entered into a geographic declined from 34 to 8. Mean distance to nearest leks ranged decreased from an initial 102,301 ha to 54,972 ha in 1990. destruction and fragmentation. Two areas with continued development, urbanization, mining (oil and natural gas) and for change. Prairie chicken population declined by 89% over from a minimum of 1, 1 14 m to 2,821 m while sites were increased from 5 to 21 while mean patch size decreased from increasingly aggregated in the landscape. The south study information system for comparison and analysis. The north managed for prairie chickens. The southern area represents metric which showed a significant change. Prairie chicken oil production fields. Aerial photographs from 19 5 5, 1969, patch size decreased from 25,575 ha to 5,497 ha for the same period. Coarse landscape statistics did not suggest any population declined by 94% over 35 years. Mapped lekking Potential prairie chicken habitat decreased from an initial Prairie were selected to study long-term landscape change. sites from 1979 to 1992 varied from 15 to 32. Prairie statistics indicated area and perimeter were the best tests study area is comprised of 56,000 ha and centered on the the 40 years. Mapped lekking sites from 1979 to 1992 The Gulf Coastal Prairie is one of the most intensively The northern area represents an agricultural dominated area The number of prairie patches increased from 4 to 10 as mean their infrastructure have served as agents of prairie time, reducing mean distance to nearest lekking site from utilized natural region,- in Texas. Agricultural were highly aggregated in the landscape in 1992. were used to determine land cover. Photographs were |
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| Item Description: | "Major subject: Rangeland Ecology and Management". Vita. |
| Physical Description: | ix, 73 leaves : illustrations, maps ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references: pages 66-72. |