Channelization assessment, White River, Vermont: remote sensing, benthos, and wildlife
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FWS/OBS↗
Geology topics
Wendell E. Dodge
Publications and source records attributed to Wendell E. Dodge.
Movements, home range, and control of porcupines in western Washington.
Radio-telemetry was used to monitor the movements of 18 porcupines (Erethizon dorsatum) in typical west Cascase habitat near Mount St. Helens, Washington. Average linear movement ranged from 249 m in 24 hr to 1,585 m for periods of more than 30 days. The greatest linear movement was 31.1 km in 66 days. Average home range of animals tracked for 10 months or more was 83.5 hectares; the average range of males (106.6 hectares) exceeded that of females (81.2 hectares). Concentration of animals at den sites was not observed. Hunting porcupines with dogs is probably the most effective control measure.
Wildlife Leaflet↗
Body condition and response to pesticides in woodcocks
Response of woodcocks ( Philohela minor ) to heptachlor dosage was closely related to the physical condition of the birds, as reflected by body weight and by body weight in relation to capture weight: in a series of tests with underweight birds, nearly all woodcocks died at dosage levels well below those at which nearly all the birds in a normal-weight series lived. Heptachlor residues in tissues were determined and their loss with time was estimated. Dieldrin proved more toxic than heptachlor to birds of similar weight. Birds in good weight survived massive doses of DDT; some succumbed to smaller spaced serial doses, but only when these were accompanied by starvation rations. When birds were placed in foil-lined boxes after doses of heptachlor added to butter oil or corn oil, it became evident that they passed quantities of oil in about 3 hours, thus very likely ridding themselves of a large part of the heptachlor dose. It was concluded that other methods than dosage with encapsulated chemicals would be needed for appraisal of field effects of toxicants on woodcocks.
Journal of Wildlife Management↗