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Full-Text Articles in Life Sciences
Photosynthetic Competence Of An Endangered Shrub, Lindera Melissifolia, Robert D. Wright
Photosynthetic Competence Of An Endangered Shrub, Lindera Melissifolia, Robert D. Wright
Journal of the Arkansas Academy of Science
Net photosynthesis and water relations were investigated in situ for a population of Lindera melissifolia in northeast Arkansas. Photosynthetic light use efficiency was found to be characteristic of a shade plant. Response of photosynthesis to temperature and CO₂ was insensitive over ranges found during the growing season. High water use efficiency was demonstrated, but under typical conditions of low light this was marginally beneficial. In comparison -with competing understory plants, the species proved to be photosynthetically competent. The data are evaluated in terms of the survival potential of the species.
Fecundity Of Male White-Tailed Deer On Holla Bend National Wildlife Refuge, Thomas A. Nelson, Michael W. Johnson
Fecundity Of Male White-Tailed Deer On Holla Bend National Wildlife Refuge, Thomas A. Nelson, Michael W. Johnson
Journal of the Arkansas Academy of Science
Male reproductive tracts were collected from 57 white-tailed deer (Odocoileus virginianus) harvested on Holla Bend National Wildlife Refuge during the 1988 and 1989 archery deer seasons. Organ weights and total numbers of spermatozoa present were determined for both testes and epididymides. Among yearling and adult males, the mean weights of testes and epididymides peaked during November and decreased through the end of the collection period in mid-December. Total number of spermatozoa in the tract increased through October, peaked during the last half of November, and decreased through mid- December. No significant difference was found between the mean number of spermatozoa …