Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Physical Sciences and Mathematics
Plastic Visual Barriers Were Ineffective At Reducing Recolonization Rates Of Prairie Dogs, Scott E. Hygnstrom
Plastic Visual Barriers Were Ineffective At Reducing Recolonization Rates Of Prairie Dogs, Scott E. Hygnstrom
Great Plains Wildlife Damage Control Workshop Proceedings
Two plastic visual barriers were ineffective in controlling expansion of 7 active black-tailed prairie dog (Cynomys ludovicianus) colonies and recolonization of 7 toxicant-treated sections of colonies. Barriers constructed with Sno-Strap, a 15.2- cm wide band of high-tensile polyethylene plastic, were destroyed by wind action within 3 weeks. Barriers constructed with Tensar® snowfence cost $2.10/m and retained their structural integrity for 3 years with occasional maintenance. Recommendations are provided to increase effectiveness of visual barriers.
Protecting Juvenile Salmonids From Gull Predation Using Wire Exclusion Below Hydroelectric Dams, John E. Steuber, Mikel E. Pitzler, J. Gary Oldenburg
Protecting Juvenile Salmonids From Gull Predation Using Wire Exclusion Below Hydroelectric Dams, John E. Steuber, Mikel E. Pitzler, J. Gary Oldenburg
Great Plains Wildlife Damage Control Workshop Proceedings
Predation by ring-billed gulls (Larus delawarenis) has been identified as a significant threat to migrant steelhead and salmon (Oncorhynchus spp.) smolt in the Columbia and Snake Rivers. Bird predation appears highest immediately below hydroelectric facilities. Installation of overhead wire/cable exclusion systems over the tailrace area of 12 dams has been completed to reduce gull predation. Data collected from 1 of the facilities as well as observations from other dams indicate that overhead wire/cable exclusion systems are effective in reducing predation by gulls.
Deer Exclusion Efforts To Reduce Crop Damage In Michigan And Northeast Wisconsin, Jim Isleib
Deer Exclusion Efforts To Reduce Crop Damage In Michigan And Northeast Wisconsin, Jim Isleib
Great Plains Wildlife Damage Control Workshop Proceedings
A random sample of 93 deer-fenced farms in northern Lower and Upper Michigan and northeast Wisconsin and 250 non-deer-fenced farms in 5 Upper Michigan counties with high white-tailed deer (Odocoileus virginianus) populations was surveyed by mail using 2 different questionnaires. High-tensile electric was the most commonly used type of deer exclusion fence. A 1.8 m (6 ft) height apparently provided the best balance between effectiveness, cost, and ease of installation. Fence users perceived that 2.4 m (8 ft) woven wire was most effective. However, the high cost of installation limited widespread use. Other types of fence with inconsistent …