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Hydrological Characteristics Of A Large-Scale Flooding And Draining Experiment, Barrow, Alaska, Edith Jaurrieta De Velasco
Hydrological Characteristics Of A Large-Scale Flooding And Draining Experiment, Barrow, Alaska, Edith Jaurrieta De Velasco
Open Access Theses & Dissertations
The Arctic appears to be affected by climate change more so than any other region on Earth. Some of the most significant climate change impacts reported for the Arctic are associated with dramatic shifts in the hydrologic regime of terrestrial ecosystems. Understanding the hydrologic processes that are associated with different components of arctic terrestrial ecosystems is important because water in the form of snow or rain influences a range of properties and processes such as land-atmosphere energy and trace gas fluxes, nutrient cycling, ecosystem dynamics, biodiversity, periglacial processes and surface albedo. Furthermore, plants, animals, and native people of the Arctic …
Ecological Study Of Oxygen Consumption In Three Species Of Rattlesnake, Crotalus Atrox, C.Lepidus And C. Molossus (Viperidae) From The Northern Chihuahuan Desert, Luis Miranda
Open Access Theses & Dissertations
The purpose of this study was to compare oxygen consumption of three species of rattlesnakes, Crotalus atrox, C. lepidus and C. molossus, that inhabit the Chihuahuan Desert within the Indio Mountain Research Station (IMRS), Hudspeth County, Texas. The resting metabolic rates (RMR) of 39 rattlesnakes (C. atrox, N = 17; C. lepidus, N = 8; and C. molossus, N = 14) were determined at four experimental temperatures (20°, 25°, 30°, and 35°C). The body masses ranged from 47 to 660 g for all three rattlesnake species.
The temperature coefficient of metabolism (Q10) averaged 2.8 between temperatures of 20°-30°C and 2.15 …
Ecology And Genetics Of Philodina Megalotrocha (Rotifera, Bdelloidea) From Chihuahuan Desert Populations, Lina Kamel Hamdan
Ecology And Genetics Of Philodina Megalotrocha (Rotifera, Bdelloidea) From Chihuahuan Desert Populations, Lina Kamel Hamdan
Open Access Theses & Dissertations
The Chihuahuan Desert is a unique region with high biodiversity. There is a high degree endemism of freshwater biota, but relatively few studies have been focused on zooplankton. Bdelloid rotifers are one component of these ecosystems and often dominate very temporary habitats. Bdelloids are usually assumed to be cosmopolitan species due to their potentially high dispersal rates. Distribution records of the bdelloid P. megalotrocha extend from North America to New Zealand. However, little is known about its ecology or genetics. The aims of this study are to: 1) determine whether the distribution of P. megalotrocha in the Chihuahuan Desert is …