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Full-Text Articles in Life Sciences
Comments On Estimating Population Rate Of Increase From Age Frequency Data, C. Renn Tumlison, V. Rick Mcdaniel
Comments On Estimating Population Rate Of Increase From Age Frequency Data, C. Renn Tumlison, V. Rick Mcdaniel
Journal of the Arkansas Academy of Science
Although many papers have described assumptions and calculations of r from different kinds of data, none has compared estimates of r for the same real data set under different assumptions. We used the age distributions of gray foxes collected during six trapping seasons to estimate and compare r and lₓ series derived under different assumptions. Because trapped foxes are killed, they are believed by some to represent death history data. We found this treatment underestimates mortality so overestimates survivorship and leads to erroneous conclusions about the population. Use of a projection matrix allowed prediction of population size and thus allowed …
Reproductive Characteristics Of South Florida Sternotherus Odoratus And Kinosternon Baurii (Testudines: Kinosternidae), Walter E. Meshaka Jr.
Reproductive Characteristics Of South Florida Sternotherus Odoratus And Kinosternon Baurii (Testudines: Kinosternidae), Walter E. Meshaka Jr.
Journal of the Arkansas Academy of Science
No abstract provided.
Forest Habitat Use By White-Tailed Deer In The Arkansas Coastal Plain, T. B. Wigley Jr., M. E. Garner
Forest Habitat Use By White-Tailed Deer In The Arkansas Coastal Plain, T. B. Wigley Jr., M. E. Garner
Journal of the Arkansas Academy of Science
Forest habitat use by five radio-equipped white-tailed deer (Odocoileus virginianus) was monitored in the Arkansas Coastal Plain during 1982-84. The deer were located 821 times. Use of forest types was compared to expected use as calculated from availability. The study area was also divided into 491 two-hectare cells for which timber characteristics and number of deer locations were determined. Pine sawtimber was the most heavily used forest type in all seasons and was used more often than expected during spring. Also used more than expected were brushy areas (clearcut but not site prepared) during spring, summer and fall and openings …
Mammalian Species Recovered From A Study Of Barn Owl, Tyto Alba, Pellets From Southwestern Arkansas, Tim W. Steward, J. D. Wilhide, V. Rick Mcdaniel, Daniel R. England
Mammalian Species Recovered From A Study Of Barn Owl, Tyto Alba, Pellets From Southwestern Arkansas, Tim W. Steward, J. D. Wilhide, V. Rick Mcdaniel, Daniel R. England
Journal of the Arkansas Academy of Science
No abstract provided.
Sex Ratios In Bobcat Populations, C. Renn Tumlison, V. Rick Mcdaniel
Sex Ratios In Bobcat Populations, C. Renn Tumlison, V. Rick Mcdaniel
Journal of the Arkansas Academy of Science
Reported sex ratios in bobcat populations have suggested great variation ranging from strong male bias to strong female bias. Explanations offered for these observations have included factors of mobility, activity, behavior, inaccurate data collection, hunting pressure, and population density. Ratios are probably most representative during the winter, when females are no longer under constraints of parental care. Sex determination should be made by experienced observers and preferably through internal examination. The most productive direction for interpretation of validated ratios appears to be in terms of population density, hunting pressure, and the timing of harvest.