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Number of projects found: 1092

Male behavior and female recruitment in the red-winged blackbird

1977

Behavioral tests using freeze-dried female Red-winged Blackbird models were conducted on 11 territorial males through one breeding season. The intensity of courtship in the tests reflected recruitment success but not territory quality, indicating that those male attributes associated with territory...

Diffuse competition in Lepidoptera

1974

The effects of interspecific competitive encounters have traditionally been viewed in terms of species replacement, but recent workers have recognised the importance of weak or diffuse competition, which leads only to reduced niche volume. Evidence of such niche restriction...

Feeding ecology of insectivorous bats

1974

This paper is a report of some of our efforts to increase knowl- edge about the feeding ecology of insectivorous bats. It includes some consideration of what insectivorous bats eat, structure in bat faunas, the role of activity in resource...

Nitrogen fixation in the rhizosphere of freshwater angiosperms.

1974

Acetylene reduction by bacteria in the rhizosphere of Glycerin borealis and Typllrc sp. was studied under anaerobic and aerobic conditions. Under anaerobic conditions, when roots and rhizomes were incubated with rhizosphere sediments at 25'C without glucose, acetylene reduction to ethylene...

Exploration by the deer mouse, Peromyscus leucopus

1966

The exploration of new objects and new environments by Peromyscus leucopus was observed in laboratory pens and inferred from the number of smoked paper track records obtained from track shelters (milk cartons or tin cans) in the field. The exploration...

Characteristics and uses of Peromyscus tracking data

1965

Movements of island populations of deer mice were studied by smoked paper tracking supplemented by live trapping. Some mice tracked regularly, others rarely. Some stations were tracked much more than others. The number of track records per night varied greatly...