Published October 1922. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Post-menopausal women are at an increased risk for osteoporosis due to increased
bone resorption associated with estrogen deficiency. Subcutaneous administration of leptin, a
hormone produced primarily by adipocytes, attenuates bone loss in the ovariectomized (ovx)
rat, an animal model for post-menopausal bone loss. Leptin has both direct peripheral and
indirect...
1. Chronic infections may have negative impacts on wildlife populations, yet their effects are difficult to detect in the absence of long-term population monitoring. Brucella abortus, the bacteria responsible for bovine brucellosis, causes chronic infections and abortions in wild and domestic ungulates, but its impact on population dynamics is not...
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Biology, Oregon State University, Corvallis, OR 97331, USA; 2Odum School of Ecology
andDepartmentof
It is well established that the choice of yeast used to perform wine fermentation significantly influences the sensory attributes of wines; different yeast species and strains impart different profiles of esters, volatile fatty acids, higher alcohols, and volatile sulphur compounds. Indeed, choice of yeast remains one of the simplest means...
The hyporheic zone influences the thermal regime of rivers, buffering temperature by storing and releasing heat over a range of timescales. We examined the relationship between hyporheic exchange and temperature along a 24-km reach of the lower Clackamas River, a large gravel-bed river in northwestern Oregon (median discharge = 75.7...
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of water within rivers can act as thermal refugia for fishand other
aquatic organisms, making the
The use of timber harvest residue as an energy source is thought to have environmental benefits relative to food-based crops, yet the ecological impact of this practice remains largely unknown. We assessed whether the abundance and diversity of wild bees (Apoidea) were influenced by the removal of harvest residue and...