Open Access. Powered by Scholars. Published by Universities.®

Forest Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

5,006 Full-Text Articles 6,521 Authors 518,961 Downloads 100 Institutions

All Articles in Forest Sciences

Faceted Search

5,006 full-text articles. Page 1 of 114.

Fire And Fuels: Vegetation Change Over Time In The Zuni Mountains, New Mexico, Luke Wylie 2016 University of Southern Mississippi

Fire And Fuels: Vegetation Change Over Time In The Zuni Mountains, New Mexico, Luke Wylie

Master's Theses

The Zuni Mountains are a region that has been dramatically changed by human interference. Anthropogenically, fire suppression practices have allowed a buildup of fuels and caused a change in the fire-adapted ponderosa pine ecosystem such that the new ecosystem now incorporates many fire-intolerant species. As a result, the low-severity fires that the ecosystem once depended on to regenerate the forest are much reduced, and these low-severity fires are now replaced by crown-level infernos that threaten the forest and nearby towns. In order to combat these effects, land managers are implementing fuel reduction practices and are striving to better understand the ...


Long-Term Nitrogen Addition Decreases Carbon Leaching In A Nitrogen-Rich Forest Ecosystem, X. Lu, Frank S. Gilliam, G. Yu, H. Chen, J. Mo 2016 Marshall University

Long-Term Nitrogen Addition Decreases Carbon Leaching In A Nitrogen-Rich Forest Ecosystem, X. Lu, Frank S. Gilliam, G. Yu, H. Chen, J. Mo

Frank S. Gilliam

Dissolved organic carbon (DOC) plays a critical role in the carbon (C) cycle of forest soils, and has been recently connected with global increases in nitrogen (N) deposition. Most studies on effects of elevated N deposition on DOC have been carried out in N-limited temperate regions, with far fewer data available from N-rich ecosystems, especially in the context of chronically elevated N deposition. Furthermore, mechanisms for excess N-induced changes of DOC dynamics have been suggested to be different between the two kinds of ecosystems, because of the different ecosystem N status. The purpose of this study was to experimentally examine ...


Interactive Effects Of Nitrogen And Phosphorus On Soil Microbial Communities In A Tropical Forest, Lei Liu, Tao Zhang, Frank S. Gilliam, Per Gundersen, Wei Zhang, Hao Chen, Jiangming Mo 2016 Marshall University

Interactive Effects Of Nitrogen And Phosphorus On Soil Microbial Communities In A Tropical Forest, Lei Liu, Tao Zhang, Frank S. Gilliam, Per Gundersen, Wei Zhang, Hao Chen, Jiangming Mo

Frank S. Gilliam

Elevated nitrogen (N) deposition in humid tropical regions may exacerbate phosphorus (P) deficiency in forests on highly weathered soils. However, it is not clear how P availability affects soil microbes and soil carbon (C), or how P processes interact with N deposition in tropical forests. We examined the effects of N and P additions on soil microbes and soil C pools in a N-saturated old-growth tropical forest in southern China to test the hypotheses that (1) N and P addition will have opposing effects on soil microbial biomass and activity, (2) N and P addition will alter the composition of ...


Estimated Losses Of Plant Biodiversity Across The U.S. From Historical N Deposition From 1985—2010., Christopher M. Clark, Philip E. Morefield, Frank S. Gilliam, Linda H. Pardo 2016 Marshall University

Estimated Losses Of Plant Biodiversity Across The U.S. From Historical N Deposition From 1985—2010., Christopher M. Clark, Philip E. Morefield, Frank S. Gilliam, Linda H. Pardo

Frank S. Gilliam

Although nitrogen (N) deposition is a significant threat to herbaceous plant biodiversity worldwide, it is not a new stressor for many developed regions. Only recently has it become possible to estimate historical impacts nationally for the United States. We used 26 years (1985–2010) of deposition data, with ecosystem-specific functional responses from local field experiments and a national critical loads (CL) database, to generate scenario-based estimates of herbaceous species loss. Here we show that, in scenarios using the low end of the CL range, N deposition exceeded critical loads over 0.38, 6.5, 13.1, 88.6, and 222 ...


Variation In Vegetation And Microbial Linkages With Slope Aspect In A Montane Temperate Hardwood Forest, Frank S. Gilliam, Radim Hedl, Marketa Chudomelova, Rebecca L. McCulley, Jim Nelson 2016 Marshall University

Variation In Vegetation And Microbial Linkages With Slope Aspect In A Montane Temperate Hardwood Forest, Frank S. Gilliam, Radim Hedl, Marketa Chudomelova, Rebecca L. Mcculley, Jim Nelson

Frank S. Gilliam

Plant ecologists have long been interested in aspect-related contrasts of montane forests. Few studies have assessed correlation (linkage) among vegetation strata; fewer have included soil microbial communities. This study assessed contrasts in overstory, spring herbaceous, and soil microbial communities between northeast (NE) - and southwest (SW) -facing slopes in a second-growth West Virginia hardwood forest. We addressed three questions: (1) how do soil microbial, herbaceous layer, and overstory communities vary with slope aspect? (2) do forest vegetation strata and soil microbial communities exhibit linkage? (3) do biotic relationships and linkage vary with slope aspect? Moisture, organic matter, pH, soil NO3 ...


Changes In Soil Carbon Sequestration In Pinus Massoniana Forests Along An Urban-To-Rural Gradient Of Southern China, H. Chen, W. Zhang, Frank S. Gilliam, L. Liu, J. Huang, T. Zhang, W. Wang, J. Mo 2016 Marshall University

Changes In Soil Carbon Sequestration In Pinus Massoniana Forests Along An Urban-To-Rural Gradient Of Southern China, H. Chen, W. Zhang, Frank S. Gilliam, L. Liu, J. Huang, T. Zhang, W. Wang, J. Mo

Frank S. Gilliam

Urbanization is accelerating globally, causing a variety of environmental changes such as increases in air temperature, precipitation, atmospheric CO2, and nitrogen (N) deposition. However, the effects of these changes on forest soil carbon (C) sequestration remain largely unclear. Here, we used urban-to-rural environmental gradients in Guangdong Province, southern China, to address the potential effects of these environmental changes on soil C sequestration in Pinus massoniana forests. In contrast to our expectations and earlier observations, soil C content in urban sites was significantly lower than that in suburban and rural sites. Lower soil C pools in urban sites were correlated ...


2106 Symposium Schedule Of Events, Shannon R. Trimboli Education Coordinator 2016 Western Kentucky University

2106 Symposium Schedule Of Events, Shannon R. Trimboli Education Coordinator

Mammoth Cave Research Symposia

This is the Schedule of Events for Mammoth Cave National Park's 11th Research Symposium.


What Data Analytics Can Do For You!, Leyla Zhuhadar, J. Kirk Atkinson, Albert Meier, Ouida Meier 2016 Selected Works

What Data Analytics Can Do For You!, Leyla Zhuhadar, J. Kirk Atkinson, Albert Meier, Ouida Meier

Leyla Zhuhadar

No abstract provided.


Analysis Of Forest Structure Among Management Types At Land Between The Lakes, Kentucky, Miranda Thompson 2016 Murray State University

Analysis Of Forest Structure Among Management Types At Land Between The Lakes, Kentucky, Miranda Thompson

Scholars Week

Fire is a dynamic disturbance that once created and maintained the oak savannas and oak forests of the Southeast. These forests are characterized by open structures with herbaceous understories, which provide significant habitat and food for native wildlife species. In the absence of fire, canopies close and fire-intolerant, shade-tolerant species begin to crowd the understory and midstory. This process, known as mesophication, occurs when increasingly cool, damp, and shaded conditions create a less flammable fuel bed and improve conditions for mesophytic species creating deteriorating conditions for shade-intolerant, fire-adapted species such as oaks (Quercus spp.). The use of prescribed fire is ...


Seed Dispersal: A Tale Of Two Species, W. John Hayden 2016 University of Richmond

Seed Dispersal: A Tale Of Two Species, W. John Hayden

Biology Faculty Publications

Orchids have minute, dustlike seeds. In this respect, Goodyera pubescens (Downy Rattlesnake Plantain), the 2016 VNPS Wildflower of the Year, is a typical orchid. Like all other orchids, Goodyera seeds contain little more than a few embryonic cells enclosed in a thin seed coat. There are two advantages to small seed size in orchids: minute seeds can be produced in prodigious quantities, and they can disperse over great distances by wind.


Public Access To Private Land: Research Summary, Jessica Leahy 2016 The University of Maine

Public Access To Private Land: Research Summary, Jessica Leahy

Forest Resources Faculty Scholarship

No abstract provided.


Potential Evidence For Arsenic Mineralization In Mussel Shells In The Upper Green River Basin, Kentucky, Autumn Turner, Chris Groves, Aaron Celestian, Albert Meier 2016 Selected Works

Potential Evidence For Arsenic Mineralization In Mussel Shells In The Upper Green River Basin, Kentucky, Autumn Turner, Chris Groves, Aaron Celestian, Albert Meier

Chris Groves

No abstract provided.


Mammoth Cave National Park's Max Kaemper Centennial Symposium & 9th Science Symposium: Cultural History And Research, Shannon Trimboli 2016 Western Kentucky University

Mammoth Cave National Park's Max Kaemper Centennial Symposium & 9th Science Symposium: Cultural History And Research, Shannon Trimboli

Shannon Trimboli

No abstract provided.


Mammoth Cave National Park's 10th Research Symposium: Celebrating Diversity Of Research In The Mammoth Cave Region, Shannon Trimboli 2016 MCICSL, Mammoth Cave National Park, Western Kentucky University

Mammoth Cave National Park's 10th Research Symposium: Celebrating Diversity Of Research In The Mammoth Cave Region, Shannon Trimboli

Shannon Trimboli

No abstract provided.


Mcicsl Newsletter - November 2015, Shannon Trimboli 2016 Western Kentucky University

Mcicsl Newsletter - November 2015, Shannon Trimboli

Shannon Trimboli

This issue includes the following:

Partners Recognized for Water Quality Research at Mammoth Cave National Park and Increasing Diversity in the Geosciences

Texas A&M – Galveston Students Participate in Citizen Science at Mammoth Cave National Park

Northern Kentucky University and the Mammoth Cave International Center for Science and Learning to Host Partners in the Parks Program at Mammoth Cave National Park

as well as education and research highlights, and MCICSL symposium information


Bioenergy Harvest, Climate Change, And Forest Carbon In The Oregon Coast Range, Megan K. Creutzburg, Robert M. Scheller, Melissa S. Lucash, Louisa B. Evers, Stephen D. LeDuc, Mark G. Johnson 2016 Portland State University

Bioenergy Harvest, Climate Change, And Forest Carbon In The Oregon Coast Range, Megan K. Creutzburg, Robert M. Scheller, Melissa S. Lucash, Louisa B. Evers, Stephen D. Leduc, Mark G. Johnson

Environmental Science and Management Faculty Publications and Presentations

Forests provide important ecological, economic and social services, and recent interest has emerged in the potential for using residue from timber harvest as a source of renewable woody bioenergy. The long-term consequences of such intensive harvest are unclear, particularly as forests face novel climatic conditions over the next century. We used a simulation model to project the long-term effects of management and climate change on above- and below ground carbon storage in a watershed in northwestern Oregon. The multi-ownership watershed has a diverse range of current management practices, including little-to-no harvesting on federal lands, short-rotation clear-cutting on industrial land, and ...


Assessing The Impacts Of Federal Forest Planning On Wildfire Risk Mitigation In The Pacific Northwest, Usa, Alan A. Ager, Michelle A. Day, Karen C. Short, Cody R. Evers 2016 USDA Forest Service

Assessing The Impacts Of Federal Forest Planning On Wildfire Risk Mitigation In The Pacific Northwest, Usa, Alan A. Ager, Michelle A. Day, Karen C. Short, Cody R. Evers

Environmental Science and Management Faculty Publications and Presentations

We analyzed the impact of amenity and biodiversity protection as mandated in national forest plans on the implementation of hazardous fuel reduction treatments aimed at protecting the wildland urban interface (WUI) and restoring fire resilient forests. We used simulation modeling to delineate areas on national forests that can potentially transmit fires to adjacent WUI. We then intersected these areas with national forest planning maps to determine where mechanical treatments are allowed for restoration and fire protection, versus areas where they are prohibited. We found that a large proportion of the national forest lands (79%) can spawn fires that burn adjacent ...


Big Red, Small Planet, Christian Ryan-Downing, Leslie North 2016 Western Kentucky University

Big Red, Small Planet, Christian Ryan-Downing, Leslie North

Christian Ryan

At WKU, “The Spirit Makes the Master”. Our commitment to continuous improvement is clearly reflected in our sustainability efforts. WKU’s commitment to sustainability, whether demonstrated in campus operations or in educational programs, helps to ensure that our graduates are prepared to address the complicated environmental, social and economic issues we face today. They will be able to think critically, solve problems creatively and be engaged citizens. If that’s all we accomplish then we will have achieved great success. But our sustainability commitment pays dividends, as it also leads us to reduce our environmental footprint, practice social responsibility, and ...


Mysteries Of The Underground River, Shannon Trimboli, Kim Weber, Susan Ryan, Rick Toomey 2016 Western Kentucky University

Mysteries Of The Underground River, Shannon Trimboli, Kim Weber, Susan Ryan, Rick Toomey

Shannon Trimboli

Have you ever heard of a river that that flows backwards? Mammoth Cave, the longest cave system in the world, has an underground river exhibiting reverse fl ow patterns since at least the 1960’s and most likely earlier. Beginning in 2009, 7th graders from T.K. Stone Middle School in Elizabethtown, Kentucky have been teaming with WKU researchers to study and conduct research about this phenomenon.


Antibiotic Resistance And Substrate Utilization By Bacteria Affi Liated With Cave Streams At Diff Erent Levels Of Mammoth Cave, Petra Byl, Shannon Trimboli, Rick Toomey, Jacob Byl, David Solomon, Tom Byl 2016 U.S. Geological Survey

Antibiotic Resistance And Substrate Utilization By Bacteria Affi Liated With Cave Streams At Diff Erent Levels Of Mammoth Cave, Petra Byl, Shannon Trimboli, Rick Toomey, Jacob Byl, David Solomon, Tom Byl

Shannon Trimboli

Located in south-central Kentucky, Mammoth Cave is one of the most unique National Parks in the United States. The surface landscape includes complex relationships between the flora and fauna along with human influences. However, the primary ecological focus is concealed below ground. Over four-hundred miles of cave passages, created by fl owing groundwater over millions of years, host a variety of macro and micro organisms. The Green River has cut into the limestone formation over geologic time, creating a complex network of passages that are stacked, one below the other, with the newer levels of cave lying near the bottom ...


Digital Commons powered by bepress