Global ETD Search

1	Isolated tree canopy effects on understory plant composition and soil characteristics in three black oak savanna sites of northern Indiana Fuller, Leslie A. January 1998 (has links) This study is an effort to provide new information on the effects of isolated tree canopies on understory vegetation composition and soil characteristics of northern Indiana black oak savannas. Temperate savannas in the United States have been greatly altered by human activities. Management of these areas is an important consideration for Midwest natural resource agencies. It is hypothesized that isolated trees within a savanna may alter the soil and plants around them, much in the same way that gaps in a forest canopy alter the plant composition and soil characteristics on the forest floor. In this study, isolated trees were selected in three northern Indiana black oak (Quercus velutina) savannas. Plots were located under the tree canopies and in adjacent open areas, in four directions from the tree stem. Populations of herbaceous plants were inventoried and the soil characteristics analyzed for both inside-canopy and outside-canopy plots. The environmental variables measured accounted for only about 20 percent of the variation in plant community between plots according to a Canonical Correspondence Analysis. Most of the variation in plant composition between plots was explained by pH, the amount of rain throughfall, and the thickness of the A horizon. It is clear that these black oak trees do alter the soil and plant composition around them. This information has implications for the long-term management of northern Indiana savannas. / Department of Natural Resources and Environmental Management Savanna ecology -- Indiana. Plant communities -- Indiana. Black oak -- Indiana. Soils -- Indiana.
2	Population-level and Individual-level Drivers of Reproduction in Chestnut Oak (Quercus montana Willd.) and Black Oak (Q. velutina Lam.) in Southeast Ohio Smith, Sarah J. January 2019 (has links) No description available. Botany Ecology Environmental Science Forestry Management masting chestnut oak black oak reproduction treatment effects
3	Effects of Air vs. Air+Soil Heating During a Simulated Heat Wave on White Oak (Quercus alba) and Black Oak (Quercus velutina) Lightle, Nicole E. 22 August 2013 (has links) No description available. Ecology Environmental Science Forestry Physiology Plant Sciences Plant Biology Urban Forestry acute heat heat stress heat wave extreame weather soil heating superoptimal temperature root zone temperature global climate change white oak black oak Quercus forest mortality thermotolerance photosynthesis root respiration ABA
4	Restoration of Black Oak (<i>Quercus velutina</i>) Sand Barrens via three different habitat management approaches Kriska, David J. 03 October 2017 (has links) No description available. Botany Climate Change Conservation Ecology Environmental Management Experiments Forestry Natural Resource Management Black oak Quercus velutina sand barrens oak barren disturbance regime fire ecological restoration canopy tree removal canopy tree cover leaf litter removal mesophication succession graminoid Carabidea ground beetles Coleoptera

1

Page generated in 0.0596 seconds