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...

This paper attempts to describe the state of Rainwater Harvesting (RWH) techniques and the contributions of GIS and Remote Sensing (RS) technologies for RWH in The Syrian Desert (AL-Badia). Studies were conducted using physiographic factors of The Syrian Desert (the natural factors, the climatic factors, the pastoral cover, and animal wealth) for the applications of GIS and Remote sensing techn...

plant diversityis essential to maintain the health of planet's ecosystems. conservation of biodiversity is necessary for the ecological stability and productivity in natural ecosystems. the aim of this research was to study the biodiversity and richness of plant species (including trees, shrubs and grasses) related to the environmental factors (soil and physiography) in the forests of zagros, w...

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...