Vertebrate behavior and ecology. Final report, October 16, 1967-May 31, 1983

Technical Report · Wed Feb 01 04:00:00 EST 1984

OSTI ID:5149656

Tester, J R; Siniff, D B

Radio telemetry engineering, design and development has recently focused on high power transmitters, ultrasonic receivers and transmitters, corrosive links, high frequency transmitters and implanted transmitters. Ranges from implanted transmitters are approximately 4 to 10 times less than from external transmitters due to fundamental limitations of small antennas. Social organization, movements, activities, foraging strategies, and population dynamics of sea otters (Enhydra lutris) were investigated from 1979 to 1982 in Prince William Sound, Alaska. Otters in newly occupied male areas spent 23% less time feeding but obtained 38% more calories per day than otters in the area of prolonged occupation where food was less abundant. Reduction of boat traffic during winter in most recently occupied male areas prompted large seasonal influexes of otters. Females were capable of reproducing annually, but rarely did so under food-stressed conditions. The population segment in the male areas increased at a rate of 50% per year as male pups dispersed from all parts of the Sound into this region, and few animals died.

• Research Organization: Minnesota Univ., Minneapolis (USA)
• DOE Contract Number: AC02-76EV01332
• OSTI ID: 5149656
• Report Number(s): DOE/EV/01332-1; ON: DE84007318
• Country of Publication: United States
• Language: English

Related Subjects

520100* -- Environment
Aquatic-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
550100 -- Behavioral Biology
59 BASIC BIOLOGICAL SCIENCES
ALASKA
ANIMALS
BEHAVIOR
COASTAL WATERS
COMMUNICATIONS
DATA TRANSMISSION
ECOLOGY
FEDERAL REGION X
MAMMALS
NORTH AMERICA
POPULATION DYNAMICS
SURFACE WATERS
TELEMETRY
USA
VERTEBRATES