The immobilization of chelators to solid supports has recently gained renewed interest due to the increasing biomedical and environmental applications made possible by these molecules’ ability to bind Fe(III) and other metal ions. The uses of immobilized chelators have expanded to include the treatment of metal overload in serum, the...
Water movement, from forest soil to streams, has traditionally been modeled by translatory flow. A hypothesis was presented by Brooks et al. (2010) suggesting that, in addition to translatory flow, there exists an immobile pool of water trapped in small pores with low matric potential. Comparisons of water stable isotope...
The OSU Government Relations Office provides periodic updates that describe events in Washington, DC and Salem. These updates include insights on how budget and policy decisions at the state and federal level will affect OSU and are issued once or twice a month, depending on the level of activities in...
Soil organic matter (SOM) is the result of the balance between decomposition and incorporation of detritus from both above and below ground sources into the soil. It composes only a fraction of the soil by mass but it is one of the most critical components. The Detritus Input and Removal...
Kate Chopin, author of the proto-feminist novel The Awakening, was also a prolific writer of short stories. Nineteen of her stories were originally published in Vogue magazine between 1893 and 1900. This study looks at six of these stories, "The Father of Desiree's Baby," "A Respectable Woman," "The Dream of...
In undisturbed N-limited forested catchments, DON may represent over 90% of the total N lost in streams. Some ecologists have suggested that plant-derived reactive polyphenols may be responsible for DON binding and transport because polyphenol-protein complexes are known to precipitate out of solution, bind to mineral surfaces or organic matter...
Dissolved organic carbon (DOC) flux is an important mechanism to convey soil carbon (C) from aboveground organic debris (litter) to deeper soil horizons and can influence the formation of stable soil organic carbon (SOC) compounds. Aboveground litter quantity and quality was manipulated for 20-years in an old-growth Douglas fir forest...
Sepsis is a blood infection caused by circulating pathogens and cell wall fragments that affects over 1 million patients per year in the United States. When bacterial cell membranes are lysed by antibiotics, cell wall fragments containing lipopolysaccharides (LPS) are released. As a result, the capture of LPS is critical...
Soil dissolved organic carbon (DOC) is a small but crucial part of the forest carbon cycle. Characterizing the relationship between detrital inputs and soil DOC chemistry is crucial to understanding the ultimate fate of root carbon, fallen wood and needles. Chemical differences in the DOC pool may help to explain...
The link between aboveground net primary productivity (ANPP) and resource gradients generated by complex terrain (solar radiation, nutrients, and moisture) has been established in the literature. Belowground ecosystem stocks and functions, such as soil organic carbon (SOC), dissolved organic carbon (DOC), and belowground productivity have also been related to the...
Protein adsorption on blood contacting medical devices usually causes fouling and failure, and may promote clotting and undesirable immune responses. Hydrophilic polymer coatings in a dense, pendent “brush” conformation can resist protein adsorption on the surface while increasing biocompatibility. Such coatings can also be used to immobilize a variety of...
Dissolved Organic Carbon (DOC) originates from organic matter. Climate and vegetation have been found to alter DOC production. The goal of this study was to determine where the differences in DOC production originate from. Mineral soil and substrate including maple leaves, needles, old wood, and sticks were collected from the...
Increased globalization has greatly increased the ability for species to travel outside of their native range and reach all parts of the world. While most species do not have an impact in new habitats, a small percentage are able to establish a new population and spread, causing ecological damage and...
There is a growing consensus that anthropogenic warming will impact soil organic matter (SOM). Globally, soil contains 2-3 times more carbon (C) than plants, and like plants, temperature induced change of SOM could have significant climate repercussions. Although, the majority of warming experiments have increased day and night temperatures equally,...
:
______________________________________________________________________________
Kate J. Lajtha
There is a growing consensus that anthropogenic warming will impact soil
How water moves through soils is of importance to studies of stream hydrology and biogeochemistry. Although translatory flow, which states how soil water is displaced by additional precipitation into streams, is a widely accepted model, Brooks et al. (2010) found evidence that challenged this model. They suggested that there are...
Soil organic matter (SOM) is the terrestrial biosphere's largest pool of organic carbon (C) and is an integral part of C cycling globally. Soil organic matter composition typically can be traced directly back to the type of detrital inputs; however, the stabilization of SOM results as a combination of chemical...
The abundance and spatial heterogeneity of coarse woody debris (CWD) on the forest floor is a prominent feature of Pacific Northwest (PNW) forest ecosystems. The effect of CWD on soil solution chemistry, nutrient cycling and availability, soil physical structure and formation of soil organic matter, however, remains unknown. Therefore, studies...
Forests in the Pacific Northwest receive very little nitrogen through atmospheric deposition and thus studying the nitrogen cycle in this region can provide insights into how the unpolluted nitrogen cycle functions. I examined the fate of organic nitrogen versus inorganic nitrogen and the effect of tamlins on N retention by...
Acculturative stress can be associated with increased conflicts between Latino parents and adolescent youth, and have negative effects on Latino immigrant parents' psychosocial functioning and parenting practices. Yet, the potentially deleterious effects of acculturative stress on Latino immigrant parents' psychosocial functioning and parenting practices may be mitigated through positive acculturative...