Filters: Tags: radio telemetry (X)26 results (62ms)
Technique for dorsal subcutaneous implantation of heart rate biotelemetry transmitters in black ducks: Application in an aircraft noise response study
Loss from harlequin ducks of abdominally implanted radio transmitters equipped with percutaneous antennas
Radio telemetry data on nighttime movements of two species of migratory nectar-feeding bats (Leptonycteris) in Hidalgo County, New Mexico, late-summer 2004 and 2005
These bat location estimates have been reported by Bogan and others (In press) and come in the form of a GIS shape file. Three species of nectar-feeding phyllostomid bats migrate north from Mexico into deserts of the United States (U.S.) each spring and summer to feed on blooms of columnar cacti and century plants (Agave spp). However, the habitat needs of these important desert pollinators are poorly understood. We followed the nighttime movements of two species of long-nosed bats (Leptonycteris yerbabuenae and L. nivalis) in an area of late-summer sympatry at the northern edges of their migratory ranges. We radiotracked bats in extreme southwestern New Mexico during 22 nights over two summers and acquired location...
Satellite tracking of the wandering albatross Diomedea exulans around Australia and in the Indian Ocean
Population fragmentation and inter-ecosystem movements of grizzly bears in western Canada and the northern United States.
Conclusions: Grizzly bear population fragmentation corresponded to the presence of settled mountain valleys and major highways. In these disturbed areas, the inter-area movements of female bears was affected more than for male bears. Without female connectivity, small subpopulations of grizzly bears are not viable over the long term. Thresholds/Learnings: Females grizzlies reduced their movement rates drastically when settlement increased to >20% of a given area. In highly settled areas (>50% settlement), both sexes demonstrated similar reductions in movement. Synopsis: Researchers studied the current state and potential causes of population fragmentation in grizzly bears over western Canada, the Greater Yellowstone...
Migratory and reproductive activity of radio-tagged Arctic char (Salvelinus alpinus L.) in northern Labrador
Radio telemetry as a tool to study habitat use of nase (Chondrostoma nasus L.) in medium-sized rivers
Overwintering behavior and physiology of eastern painted turtles (Chrysemys picta picta) in Rhode Island
Invasive crayfish: Activity patterns of Procambarus clarkii in the rice fields of the Lower Guadalquivir (Spain).
Use of an extensive radio receiver network to document Pacific lamprey (Lampetra tridentata) entrance efficiency at fishways in the Lower Columbia River, USA
Radio-tracking manatees from land and space: Tag design, implementation, and lessons learned from long-term study
Female big free-tailed bats Nyctinomops macrotis have been captured over water in northern Arizona in high elevation (> 2,400 m) forests and low elevation (1,500 m) desert scrub vegetation. We hypothesized that roost sites were in vertical walls of cliffs that were up to 25 km away from capture sites given the flight capability of these bats. During summer 2005 we captured eight females over ponds and attached radio transmitters to locate day roosts. We also identified locations used during nightly movements from 1 to 6 nights of radio tracking. We found three day roosts for seven bats; average distance (� SE) from a capture site to a roost was 12.1 � 3.0 km. Roosts were small maternity colonies used by ? four N....
Spawning migration of radio tagged landlocked Arctic Charr, Salvelinus alpinus L. in Ennerdale Lake, the English Lake District
Foraging partitioning between giant petrels Macronectes spp. and its relationship with breeding population changes at Bird Island, South Georgia.