A study was conducted of the response of the garden symphylan,
Scutigerella immaculata (Newport), to naturally occurring chemicals.
Results of olfactometer studies with plant odors were inconclusive
because air currents in one olfactometer and the shape of another had
undesirable effects on symphylan behavior.
Non-random distributions of symphylans in chambers...
Since the 1964 earthquake and geologic uplift, beavers (Castor canadensis) have expanded their historic range from the inland (outwash plain) Copper River Delta, Alaska to the once tidally influenced areas of the outer area (uplifted marsh). The uplift presents a unique opportunity to observe beaver expansion, habitat selection and influence...
The evolution and maintenance of multiple phenotypes within populations is an interesting evolutionary and ecological question, and is becoming increasingly important for the restoration and conservation of partially migratory species. In particular, why individuals adopt a particular phenotype has been the focus of numerous research efforts. In the partially migratory...
The Confucius Institutes program is a Chinese organization established in 2004 to provide the world with language instruction and increase cultural awareness. The program forms joint venture business models with universities and schools around the world to establish language and culture centers on their school’s campus (“Constitution and By-Laws”). Over...
Understanding how populations within a species interact across various geographic and temporal scales is fundamental to developing appropriate conservation strategies. I examined the geographic variation in genetic and meristic characters of coastal cutthroat trout (Oncorhynchus clarki clarki) based on
approximately 1,400 fish sampled from 54 populations spanning their distributional range...
Twenty-eight Columbia ewes were made available for study
during their breeding and anestrous seasons. After the regularity
of the estrous cycles had been established, eight of the ewes were
sacrificed in pairs at four different stages of the estrous cycle.
Eight additional ewes were sacrificed during anestrus. Pituitary
glands, ovaries,...
Winegrapes are an important crop for Oregon agriculture, ranking amongst the top ten agricultural commodities based on farmgate value. The most widely planted winegrape cultivar in the state is ‘Pinot noir’ (Vitis vinifera L.), and the majority of acreage is produced in the Willamette Valley. Production of quality ‘Pinot noir’...
Quantifying labile phosphorus (P) pools in biosolids is needed to manage biosolids for both agronomic and environmental purposes. Phosphorus indices originated in an effort to protect surface water quality from-non-point-agricultural P inputs. The objectives of this research were to: (1) evaluate soil test components of the western Oregon P index...
Over the course of the last century, a successful history of fire suppression has contributed to unsuccessful present day control over wildfire. In the absence of fire and the janitorial and ecological services it provides, drier inland forests are shifting in species composition and exceeding densities that cannot survive and...