Long-Term Overstory Vegetation Responses To Prescribed Fire Management For Longleaf Pine At Big Thicket National Preserve,
2016
Stephen F Austin State University
Long-Term Overstory Vegetation Responses To Prescribed Fire Management For Longleaf Pine At Big Thicket National Preserve, Deanna M. Boensch
Electronic Theses and Dissertations
At the western edge of the longleaf pine (Pinus palustris) range, federal land managers have burned the forests of Big Thicket National Preserve to bring back the structure and diversity of the longleaf pine forest. In the early 1990’s, a four year study was conducted by Rice University, and the National Park Service continued monitoring the study’s fire ecology research plots. After two decades of data collection, ordination was applied to species abundance data to examine changes in vegetation communities from a variety of prescribed fire treatments and controls. The vegetation data was separated by size class to include overstory, …
The Cytotoxic And Antimicrobial Properties Of Pine Essential Oils: A Characterization And Comparison,
2016
University of Arkansas, Fayetteville
The Cytotoxic And Antimicrobial Properties Of Pine Essential Oils: A Characterization And Comparison, Richard Sakul
Graduate Theses and Dissertations
In the forestry industry, the pine tree species are important because of their durable timber and fast growth. In Arkansas, trees such as the loblolly pine compose almost a third of the timberland, seven million acres. In addition to the lignocellulosic biomass, pine bark and needles potentially have industrial importance as a waste stream from which high value (e.g., pharmaceutical, cosmetics) chemicals could be extracted, which could potentially increase the profit margin of forestry operations. In this research, the possibility that pine needles harvested from industry processed pine tree residues could be used as an antibacterial or cytotoxic chemical agent …
Functional Diversity Of Small And Large Trees Along Secondary Succession In A Tropical Dry Forest,
2016
Centro de Investigación Científica de Yucatán
Functional Diversity Of Small And Large Trees Along Secondary Succession In A Tropical Dry Forest, Lucía Sanaphre-Villanueva, Juan Manuel Dupuy, José Luis Andrade, Casandra Reyes-García, Horacio Paz, Paula C. Jackson
Faculty Articles
Functional Diversity is considered an important driver of community assembly in environmental and successional gradients. To understand tree assembly processes in a semideciduous tropical forest, we analyzed the variation of Functional Richness (FRic), Functional Divergence (FDiv), and Functional Evenness (FEve) of small vs. large trees in relation to fallow age after slash-and-burn agriculture and topographical position (flat sites vs. hills). FRic of small trees was lower than null model predicted values across the successional gradient, and decreased unexpectedly in older successional ages. FRic of large trees was higher than null model predictions early in succession and lower in late-successional stands …
Thirty Years Of Compositional Change In An Old-Growth Temperate Forest: The Role Of Topographic Gradients In Oak-Maple Dynamics,
2016
University of Dayton
Thirty Years Of Compositional Change In An Old-Growth Temperate Forest: The Role Of Topographic Gradients In Oak-Maple Dynamics, Julia I. Chapman, Ryan W. Mcewan
Biology Faculty Publications
Ecological communities are structured in response to spatial and temporal variation of numerous factors, including edaphic conditions, biotic interactions, climatic patterns and disturbance regimes. Widespread anthropogenic factors such as timber harvesting can create long-lasting impacts, obscuring the relationship between community structure and environmental conditions. Minimally impacted systems such as old-growth forests can serve as a useful ecological baseline for predicting long-term compositional shifts. We utilized decadal tree species sampling data (1979–2010) divided into three strata (understory, midstory, overstory) to examine temporal changes in relative abundances and spatial distributions of dominant taxa, as well as overall shifts in community composition, in …
Do Forest Commons Contribute To International Environmental Initiatives? A Socio-Ecological Analysis Of Nepalese Forest Commons In View Of Redd+,
2016
Portland State University
Do Forest Commons Contribute To International Environmental Initiatives? A Socio-Ecological Analysis Of Nepalese Forest Commons In View Of Redd+, Harisharan Luintel
Dissertations and Theses
Forests in developing countries have the potential to contribute to global efforts to mitigate climate change, promote biodiversity and support the livelihoods of rural, local people. Approximately one-fourth of such forests are under the control of local communities, which primarily manage forests for subsistence and to meet their livelihood needs. The trend of bottom-up community control is increasing through the adoption of decentralization reforms over the last 40 years. In contrast, the United Nations has introduced the top-down program, Reducing Emissions from Deforestation and Forest Degradation (REDD+) for the conservation and enhancement of forest carbon and the sustainable management of …
Smokejumper Obituary: Lewton, Terry D. (Mccall 1956),
2016
Eastern Washington University
Smokejumper Obituary: Lewton, Terry D. (Mccall 1956), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Pappenhagen, Albert R. (Missoula 1947),
2016
Eastern Washington University
Smokejumper Obituary: Pappenhagen, Albert R. (Missoula 1947), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Phillips, James R. (Missoula 1967),
2016
Eastern Washington University
Smokejumper Obituary: Phillips, James R. (Missoula 1967), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Disease Introduction Is Associated With A Phase Transition In Bighorn Sheep Demographics,
2016
Utah State University
Disease Introduction Is Associated With A Phase Transition In Bighorn Sheep Demographics, Kezia R. Manlove, E. Frances Cassirer, Paul C. Cross, Raina K. Plowright, Peter J. Hudson
Wildland Resources Faculty Publications
Ecological theory suggests that pathogens are capable of regulating or limiting host population dynamics, and this relationship has been empirically established in several settings. However, although studies of childhood diseases were integral to the development of disease ecology, few studies show population limitation by a disease affecting juveniles. Here, we present empirical evidence that disease in lambs constrains population growth in bighorn sheep (Ovis canadensis) based on 45 years of population‐level and 18 years of individual‐level monitoring across 12 populations. While populations generally increased (λ = 1.11) prior to disease introduction, most of these same populations experienced an abrupt change …
Smokejumper Obituary: Heeren, Robert D. (Missoula 1952),
2016
Eastern Washington University
Smokejumper Obituary: Heeren, Robert D. (Missoula 1952), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Mcdevitt, Les (North Cascades 1948),
2016
Eastern Washington University
Smokejumper Obituary: Mcdevitt, Les (North Cascades 1948), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Lord Jr., Joseph M. (Missoula 1956),
2016
Eastern Washington University
Smokejumper Obituary: Lord Jr., Joseph M. (Missoula 1956), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Rice, Homer Allen (Missoula 1945),
2016
Eastern Washington University
Smokejumper Obituary: Rice, Homer Allen (Missoula 1945), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Kickbusch, William L. (Missoula 1949),
2016
Eastern Washington University
Smokejumper Obituary: Kickbusch, William L. (Missoula 1949), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Dynamics Of Resprouting And Forest Regeneration Following Anthropogenic Land Use In The Central Amazon Basin,
2016
Louisiana State University and Agricultural and Mechanical College
Dynamics Of Resprouting And Forest Regeneration Following Anthropogenic Land Use In The Central Amazon Basin, Scott Lawrence Kosiba
LSU Doctoral Dissertations
Tree mortality is increasing with the effects of climate change and drought across the Amazon Basin while intense fires are becoming more prevalent. Tropical moist forest trees generally lack adaptations that protect against mortality during an intense fire, so anthropogenic burning typically kills high percentages of trees. Following disturbances where prescribed burning is used to limit woody encroachment and to fertilize the soil, abandoned land in central Amazonia becomes dominated by the pioneer tree genus, Vismia. Although the mechanisms by which Vismia comes to dominate previously-burned areas are not known, previous studies on anthropogenic land use and forest succession …
Smokejumper Obituary: Percival, Tony (North Cascades 1954),
2016
Eastern Washington University
Smokejumper Obituary: Percival, Tony (North Cascades 1954), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Assessment Of Streamside Management Zones For Conserving Benthic Macroinvertebrate Communities Following Timber Harvest In Eastern Kentucky Headwater Catchments,
2016
Transylvania University
Assessment Of Streamside Management Zones For Conserving Benthic Macroinvertebrate Communities Following Timber Harvest In Eastern Kentucky Headwater Catchments, Joshua K. Adkins, Christopher D. Barton, Scott Grubbs, Jeffrey W. Stringer, Randall K. Kolka
Forestry and Natural Resources Faculty Publications
Headwater streams generally comprise the majority of stream area in a watershed and can have a strong influence on downstream food webs. Our objective was to determine the effect of altering streamside management zone (SMZ) configurations on headwater aquatic insect communities. Timber harvests were implemented within six watersheds in eastern Kentucky. The SMZ configurations varied in width, canopy retention and best management practice (BMP) utilization at the watershed scale. Benthic macroinvertebrate samples collected one year before and four years after harvest indicated few differences among treatments, although post-treatment abundance was elevated in some of the treatment streams relative to the …
Smokejumper Obituary: Dickie, Charles W. (North Cascades 1951),
2016
Eastern Washington University
Smokejumper Obituary: Dickie, Charles W. (North Cascades 1951), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
How Does Agroforestry Help Crop Pollination?,
2016
University of Nebraska - Lincoln
How Does Agroforestry Help Crop Pollination?
Working Trees (USDA-NAC)
Agroforestry helps crop pollination via enhanced pollination efficiency, pollinator habitat, and pollinator protection.
Evaluating The Myth Of Allelopathy In California Blue Gum Plantations,
2016
California Polytechnic State University, San Luis Obispo
Evaluating The Myth Of Allelopathy In California Blue Gum Plantations, Kristen Marie Nelson
Master's Theses
It is widely accepted that allelopathy is not only significant, but more or less singular, in the inhibition of understory vegetation in California Eucalyptus globulus (blue gum) plantations. However, there is no published documentation of allelopathy by blue gums against California native species. Here, we present evidence that germination and early seedling growth of five California native species are not inhibited by chemical extracts of blue gum foliage, either at naturally-occurring or artificially concentrated levels. In the greenhouse, seeds were germinated in field-collected soil from mature blue gum plantations and the adjacent native, coastal scrub communities. In petri plates, seeds …
