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Diplochory: are two seed dispersers better than one?
Five forms of diplochory are described and general characteristics of each phase are derived and it is shown that combining two means of seed dispersal can increase the benefits of seed disperseal whilst reducing the likelihood of seed mortality.
Area use by white-lipped and collared peccaries (Tayassu pecari and Tayassu tajacu) in a tropical forest fragment
Direct Observations of Owls and Heteromyid Rodents: Can Predation Risk Explain Microhabitat Use?
It is indicated that predation alone cannot account for the divergent microhabitat associations of bipedal and quadrupedal species, and it is conceivable that they experience lower overall risk in nature, where owls may preferentially attack more easily captured prey species when given a choice.
Identification of source‐sink dynamics in mountain lions of the Great Basin
- Alyson M. Andreasen, K. M. Stewart, W. S. Longland, J. Beckmann, M. Forister
- Biology, MedicineMolecular ecology
- 1 December 2012
The results suggest that source‐sink dynamics occur at landscape scales for wide‐ranging species, such as mountain lions, and that source populations may be those that are under relatively less hunting pressure and that occupy refugia.
Interrelationships among northern flying squirrels, truffles, and microhabitat structure in Sierra Nevada old-growth habitat
During 1997-1998, we investigated the influence of both the relative abundance of truffles, preferred food items, and microhabitat structure on the occurrence of northern flying squirrels ( Glaucomys…
SEEDLING RECRUITMENT IN ORYZOPSIS HYMENOIDES: ARE DESERT GRANIVORES MUTUALISTS OR PREDATORS?
The predicted rank order of seedling recruitment among nine experimental treatments based on expected effects of rodent seed caching closely matched the observed ranking pattern, indicating that rodents determined seedling recruited patterns of Indian ricegrass.
PATTERNS OF ECTOMYCORRHIZAL-FUNGI CONSUMPTION BY SMALL MAMMALS IN REMNANT OLD-GROWTH FORESTS OF THE SIERRA NEVADA
Investigating fungal consumption and resulting patterns of potential spore dispersal by 6 small mammals in old-growth habitat in the Sierra Nevada of the United States suggests that these small mammals may disperse fungi in ecologically nonredundant ways and that the integrity of entire small-mammal communities may be important to the maintenance of ectomycorrhizal diversity in coniferous forests.
Nongame Bird Community Responses to Sagebrush Invasion of Crested Wheatgrass Seedings
Food abundance determines distribution and density of a frugivorous bird across seasons
Results suggest that for an animal occupying a highly fragmented landscape, distributions and densities at the habitat patch scale are driven by food abundance, are moderately affected by habitat fragmentation, and are slightly influenced by vegetation structure.
Sex and age affect vulnerability of desert rodents to owl predation
Comparisons of sex ratios in prey populations with frequencies of males and females in owl diets indicated that male Dipodomys ordii and female Peromyscus maniculatus were more vulnerable to owl predation than the opposite sexes of these species.