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  • 1
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    An evaluation of the use of ERTS-1 satellite imagery for grizzly bear habitat analysis (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Improved classification and mapping of grizzly habitat will permit better estimates of population density and distribution, and allow accurate evaluation of the potential effects of changes in land use, hunting regulation, and management policies on existing populations. Methods of identifying favorable habitat from ERTS-1 multispectral scanner imagery were investigated and described. This technique could reduce the time and effort required to classify large wilderness areas in the Western United States.
    Keywords: BIOSCIENCES
    Type: PAPER-E11 , NASA. Goddard Space Flight Center 3d ERTS-1 Symp., Vol. 1, Sect. B; p 1653-1670
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Development of satellite-related biotelemetry equipment (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Radiolocation equipment used in Interrogation Recording Location System, and results in remote ground, aircraft, and satellite tracking of elk and black bear
    Keywords: BIOTECHNOLOGY
    Type: NASA-CR-121893
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    An evaluation of the use of ERTS-1 satellite imagery for grizzly bear habitat analysis (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Multispectral scanner images taken by the ERTS-1 satellite in August and October, 1972, were examined to determine if they would be useful in identifying and mapping favorable habitat for grizzly bears. It was possible to identify areas having a suitable mixture of alpine meadow and timber, and to eliminate those which did not meet the isolation requirements of grizzlies because of farming or grazing activity. High altitude timbered areas mapped from satellite imagery agreed reasonably well with the distribution of whitebark pine, an important food species. Analysis of satellite imagery appears to be a valuable supplement to present ground observation methods, since it allows the most important areas to be identified for intensive study and many others to be eliminated from consideration. A sampling plan can be developed from such data which will minimize field effort and overall program cost.
    Keywords: GEOPHYSICS
    Type: NASA-CR-135776
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Telemetry experiments with a hibernating black bear (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The objectives of this research were to develop and test telemetry equipment suitable for monitoring physiological parameters and activity of a hibernating bear in its den, to monitor this data and other environmental information with the Nimbus 3 IRLS data collection system, and to refine immobilizing, handling, and other techniques required in future work with wild bears under natural conditions. A temperature-telemetering transmitter was implanted in the abdominal cavity of a captive black bear and body temperature data was recorded continuously during a 3 month hibernation period. Body temperatures ranging between 37.5 and 31.8 C were observed. Body temperature and overall activity were influenced by disturbances and ambient den temperature. Nychthemeral temperature changes were not noticable. A load cell weight recording device was tested for determining weight loss during hibernation. Monitoring of data by satellite was not attempted. The implanted transmitter was removed and the bear was released with a radiolocation collar at the conclusion of the experiment.
    Keywords: BIOSCIENCES
    Type: NASA-CR-133926
    Format: application/pdf
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  • 5
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    Satellite monitoring of black bear. (1971)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Description of a feasibility experiment recently performed to test the use of a satellite system for telemetering environmental and physiological data from the winter den of a 'hibernating' black bear, Ursus americanus. The instrumentation procedure and evaluations of the equipment performance and sensory data obtained are discussed in detail.
    Keywords: BIOTECHNOLOGY
    Type: A study of the pressure of the cerebro-spinal fluid by remote monitoring through the skull; Nov 23, 1971 - Nov 26, 1971; Pretoria; South Africa
    Format: text
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    NASA TECHNICAL REPORTS
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