Lucina floridana is an intertidal clam that contains intracellular, sulfur-oxidizing
symbiotic bacteria in its gills. These bacteria are chemolithoautotrophic, using the energy
from the oxidation of reduced sulfur compounds to power carbon fixation. Although
sulfide is an energy-rich compound, it is also toxic to aerobic metabolism and autooxidizes
in the...
Viruses or viruslike particles of eukaryotic algae are ubiquitous in aquatic
habitats, however, suprisingly little is known about them. The research presented here
focused on one such virus which infects a multicellular filamentous brown alga of the
genus Feldmannia. Although preliminary studies had been performed on the genome
structure of...
These six stories investigate characters who must
begin to understand their own actions, which are often
made in response to authority. In the lives of these
characters, there are schemas which they believe they
fit, certain rules placed on them by society that they
each feel they must obey. It...
Properly functioning riparian systems are vital to the health of watersheds and provide an important forage and habitat resource for livestock and wildlife. Riparian grazing management strategies that are economically feasible and achieve environmental goals are needed by resource managers and livestock producers. The objective of this thesis was to...
I investigated the population attributes and habitat
selection of mountain beaver (Aplodontia rufa) recolonizing
clearcuts in the Coast Range mountains of Polk and Lincoln
counties, Oregon between June 1989 and August 1990. The
population characteristics of colonizing mountain beaver
were evaluated in 12 stands of 3 types: 1-year-old
clearcuts assumed...
The peripheral-type benzodiazepine receptor (PTBR) of trout brain was
pharmacologically characterized and pyrethroid interaction with this site
investigated. High-affinity binding sites for [³H]PK 11195 were detected in brain
membranes of rainbow trout; these shared some of the characteristics of the
PTBR of rodent brain (i.e., high affinity for PK 11195...
Background: Decades of research indicate that physical
activity is an important behavior for health promotion and
disease prevention. Despite dissemination of these
research findings, many American adults are sedentary. The
rates for sedentary behavior vary by race/ethnicity and
gender. Women and adults from minority groups are most
likely to be...
Realistic assessment of the vertical distribution of clouds, particularly the occurrence of multi-layered systems, is critical for accurate calculations of radiative transfer in general circulation models. Such information is also useful in the design and improvement of satellite retrieval techniques. Current methods for retrieving cloud properties from satellite data assume...