Pitfall Trapping of Microtus townsendii
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چکیده
منابع مشابه
Pitfall Trapping of Microtus townsendii
-A field population of Microtus townsendii was trapped concurrently with live-traps and pitfall traps throughout the spring and summer of 1975. The population was at peak densities, with a maximum of 519 voles per acre. The number enumerated by pitfalls was up to two times larger than the number enumerated by live-traps. Capture of a large number of young in pitfalls indicated that mortality wa...
متن کاملFates of disappearing individuals in fluctuating populations of Microtus townsendii
HILBORN, R., and C. J. KREBS. 1976. Fates of disappearing individuals in fluctuating populations of Microtus townsendii. Can. J . Zool. 54: 1507-1518. Fates of disappearing individuals were determined for two natural populations of Microtus townsendii by livetrapping of evacuated areas and marginal habitat, and by marking individuals with radioactive tags to locate carcasses. Two hundred and ni...
متن کاملAggression, testosterone, and the spring decline in populations of the vole Microtus townsendii.
KREBS, C. J., Z. T. HALPIN, and J. N. M. SMITH. 1977. Aggression, testosterone, and the spring decline in populations of the vole Microtus townsendii. Can. J. Zool. 55: 430-437. Many vole populations decline sharply in size at the start of the spring breeding season. We attempted to test the hypothesis that aggressiveness controls the magnitude of the spring decline in Microtus townsendii by im...
متن کاملDemographic consequences of artificial selection at the LAP locus in voles (Microtus townsendii).
LEDUC, J., and C. J. KREBS. 1975. Demographic consequences of artificial selection at the LAP locus in voles (Microtus townsendii). Can. J. Zool. 53: 1825-1840. A number of studies on small mammals have shown that changes in the frequency of alleles at polymorphic loci are correlated with population fluctuations. To determine whether the genetic composition of a population affected its density ...
متن کاملTime‐lapse camera trapping as an alternative to pitfall trapping for estimating activity of leaf litter arthropods
Pitfall trapping is the standard technique to estimate activity and relative abundance of leaf litter arthropods. Pitfall trapping is not ideal for long-term sampling because it is lethal, labor-intensive, and may have taxonomic sampling biases. We test an alternative sampling method that can be left in place for several months at a time: verticallyplaced time-lapse camera traps that have a sho...
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ژورنال
عنوان ژورنال: Journal of Mammalogy
سال: 1978
ISSN: 1545-1542,0022-2372
DOI: 10.2307/1379883