Life Sciences Commons^™

Avian Community Response To Fire In A Gambel Oak Woodland, Andreas Leidolf

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

I assessed avian communities of Gam bel oak (Quercus gambelii) woodland and surrounding habitats at Camp W. G. Williams State Military Reservation , Utah, during summer of 1993-1998. I used point counts and incidental observations to compile an avian checklist. I observed 100 species, accounting for one third of all birds known from Utah. Overlap in species composition among habitats was considerable, yet each habitat supported a distinct complement of common species.

I compared bird species composition, abundance, richness, and diversity before and after fire in burned and unburned Gam bel oak woodland using point counts. I also investigated how …

Effects Of Safflower (A Spring Crop), And Wheat Planting Date On Controlling Jointed Goatgrass (Aegilops Cylindrica) In Winter Wheat, Caleb Dale Dalley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

To improve management and control of jointed goatgrass (Aegilops cylindrica Host.) on traditional winter wheat (Triticum aestivum L.) cropland, a better understanding of the effects spring crop and wheat planting date have on weed populations and wheat yield is needed. A study of the effects of safflower (a spring crop) and wheat planting dates (early vs late) was conducted over a 2-yr period. Long term effects will be examined over a 5-yr period. The effects these treatments had on yield, weed seed contamination, jointed goatgrass population density, and soil seedbank concentration were measured. Two identical experiments were initiated, …