Title of document: INTERREGIONAL DIFFERENCES IN STREAM ECOSYSTEM RESPONSES TO URBANIZATION: CAUSES AND CONSEQUENCES Ryan Michael Utz, Doctor of Philosophy, 2010 Directed by: Dr. Robert H. Hilderbrand Program of Marine, Estuarine and Environmental Science Stream ecosystems are profoundly degraded by watershed urbanization. Hydrologic, geomorphic, chemical and thermal adjustment following urban d...

Advance regeneration in 52 mature mixed-oak stands was analyzed and described. Red maple (Acer rubrum L.) was the most abundant species in the study area. Among oak (Quercus) species, northern red oak (Q. rubra L.) was the most abundant within the Allegheny Plateau physiographic province, whereas chestnut oak (Q. montana L.) was the most abundant within the Ridge and Valley physiographic provin...

The results of investigations on shaping the soil moisture ratio in mountain basin Mątny stream located Gorce region, Poland, are presented. A was defined as a given point to one base watershed. Investigations were carried out, using TDR device, for 379 measuring points an irregular network, 0–25 cm layer. Values fluctuated between 0.75 and 1.85. Based measurements, artificial neural network (A...

Spatially and temporally resolved observations of near-surface air temperatures (Ta, 1.5–2 m above ground) are essential for understanding hydrothermal circulation at the land–atmosphere interface. However, the uneven spatial distribution of meteorological stations may not effectively capture the true nature of the overall climate pattern. Several studies have attempted to retrieve spatially co...

Introduction The vegetation of great areas of Mixed Prairie has been destroyed by plowing. But even larger ones, still intact , have degenerated far from a climax condition. The almost universal cause for such deterioration, aside from drought, is grazing. The objective of this study has been to ascertain the changes in vegetation that have resulted from 60-70 years of different intensities of ...

Land has been the central issue to human society since the dawn of civilization. Primitive society took it as free gift of nature. Land and livelihood has become the intertwined focal issues in the epochal social transformation processes famous in different era of human civilizations which gave birth to the problem of ownership entitlement, the milestone of turning land as source...

Objective: To characterize the realized niche of Mexican spotted owl (Strix occidentalis lucida) and compare environmental values it uses within physiographic provinces.Design/methodology/approach: The temperature variables (n =7), precipitation = 7) elevation 1) were extracted from 79 unique occurrences sites S. o. lucida. These grouped by provinces: Sierra Madre Occidental 59), Oriental 13) T...

The common bottlenose dolphin (Tursiops truncatus) is a cosmopolitan delphinid, regularly present in the Mediterranean Sea. According to previous studies, this tends form resident geographical units scattered on continental shelf. We investigated how physiographic characteristics of area residence, with special reference size and shape shelf, affect home range group local units. analysed compar...