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Estimating Total Phosphorus And Total Suspended Solids Loads From High Frequency Data, Amber Spackman Jones
Estimating Total Phosphorus And Total Suspended Solids Loads From High Frequency Data, Amber Spackman Jones
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Frequently measured turbidity was examined as a surrogate for total phosphorus (TP) and total suspended solids (TSS) loads at two locations in the Little Bear River, Utah, USA. Using regression techniques, equations were developed for TP and TSS as functions of turbidity. The equations accounted for censored data, and additional explanatory variables to represent hydrological conditions were considered for inclusion in the equations. By using the resulting surrogate relationships with high frequency turbidity measurements, high frequency estimates of TP and TSS concentrations were calculated. To examine the effect of sampling frequency, reference loads were determined from the concentration records for …
Reproductive Biology Of The Coyote (Canis Latrans): Integration Of Behavior And Physiology, Debra Anne Carlson
Reproductive Biology Of The Coyote (Canis Latrans): Integration Of Behavior And Physiology, Debra Anne Carlson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Wild Canis species possess a unique suite of reproductive traits including social monogamy, copulatory lock/tie, and biparental care. Females are seasonally monestrous and experience an obligatory pseudopregnancy after spontaneous ovulation. While these characteristics have been ascribed to coyotes, an integrated profile of behavior and physiology has not yet been described. In this study, temporal correlations between steroid hormone levels and socio-sexual mating behaviors were documented, as were changes in vaginal epithelium. Pseudopregnancy was compared to pregnancy by contrasting hormone (progesterone, estradiol, prolactin and relaxin) profiles of unmated females to patterns obtained in alternate years when they bred. Meanwhile, social interactions …