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Can Carbon Fluxes Explain Differences In Soil Organic Carbon Storage Under Aspen And Conifer Forest Overstories?, Antra Boca, Helga Van Miegroet 2017 Utah State University

Can Carbon Fluxes Explain Differences In Soil Organic Carbon Storage Under Aspen And Conifer Forest Overstories?, Antra Boca, Helga Van Miegroet

Helga Van Miegroet

Climate- and management-induced changes in tree species distributions are raising questions regarding tree species-specific effects on soil organic carbon (SOC) storage and stability. Quaking aspen (Populus tremuloides Michx.) is the most widespread tree species in North America, but fire exclusion often promotes the succession to conifer dominated forests. Aspen in the Western US have been found to store more SOC in the mineral soil than nearby conifers, but we do not yet fully understand the source of this differential SOC accumulation. We measured total SOC storage (0–50 cm), characterized stable and labile SOC pools, and quantified above- and belowground ...


A Tree Species Effect On Soil That Is Consistent Across The Species’ Range: The Case Of Aspen And Soil Carbon In North America, Jerome Laganiere, Antra Boca, Helga Van Miegroet, David Paré 2017 Canadian Forest Service

A Tree Species Effect On Soil That Is Consistent Across The Species’ Range: The Case Of Aspen And Soil Carbon In North America, Jerome Laganiere, Antra Boca, Helga Van Miegroet, David Paré

Helga Van Miegroet

Trembling aspen covers a large geographic range in North America, and previous studies reported that a better understanding of its singular influence on soil properties and processes is of high relevance for global change questions. Here we investigate the potential impact of a shift in aspen abundance on soil carbon sequestration and soil carbon stability at the continental scale by conducting a systematic literature review using 23 published studies. Our review shows that aspen’s effect on soil carbon is relatively consistent throughout the species range. Aspen stores less C in the forest floor but similar amounts in the mineral ...


Effect Of Spatial Influence On Endophyte Diversity Within Alnus Rubra, Sebastian L. Singleton 2017 Portland State University

Effect Of Spatial Influence On Endophyte Diversity Within Alnus Rubra, Sebastian L. Singleton

Student Research Symposium

Red alders (Alnus rubra) of the Pacific Northwest are characterized as actinorhizal dicotyledons; plants that possess that ability to form symbiotic relationships with endophytic organisms, which result in nitrogen-fixing nodules. In Alders of the order Fagales, such a symbiotic relationship with Frankia bacteria allows these plants to play crucial environmental roles as pioneer species able to colonize and enrich nutrient-deficient soils. This ability has a major impact on ecological succession by enabling other species to establish. Although inoculation with frankia bacteria is known to increase symbiotic nitrogen fixation capabilities of actinorhizal plants, whether they could confer the same benefit to ...


Critical Habitat Assessment Of The State Threatened Broad-Headed Skink, Allison Hullinger 2017 Fort Hays State University

Critical Habitat Assessment Of The State Threatened Broad-Headed Skink, Allison Hullinger

John Heinrichs Scholarly and Creative Activities Day

The Broad-Headed Skink is a semi-arboreal species that inhabits deciduous forests of the southeastern United States. Eastern Kansas makes up the northwestern periphery of their range and thus serves as an important area for studying the conservation of the species. In order to better evaluate the conservation status of the Broad-Headed Skink and develop a Recovery Plan, critical habitat needs to be better defined. In 2016, we surveyed 117 sites at Marais des Cygnes Wildlife Area, Marais des Cygnes National Wildlife Refuge, and La Cygne Wildlife Area. We installed drift fences, performed visual encounter surveys, and conducted a habitat evaluation ...


Variation In Density Dependent Seedling Survival Across Forests Of Different Successional Age And Hunting Protection Status, Nohemi Huanca-Nunez 2017 University of Nebraska-Lincoln

Variation In Density Dependent Seedling Survival Across Forests Of Different Successional Age And Hunting Protection Status, Nohemi Huanca-Nunez

Dissertations and Theses in Biological Sciences

Over 50% of the original extent of tropical forests has been cleared. Restoration of secondary forests is important for maintaining the ecosystem services that mature tropical forests provide. Density dependence (DD) is thought to be a major mechanism for shaping forest community structure and may cause reduced spatial aggregation among individuals of the same species, allowing for maintenance of diversity. While much research has focused on DD in mature tropical forests, few studies have examined how DD may influence community structure in secondary forests, many of which are also exposed to hunting. There are several important agents of negative and ...


Herbivory Impacts On Growth And Survival Of Seedlings In Bottomland Hardwood Forest Restoration Sites In The Post Oak Savannah And Blackland Prairie Ecoregions Of Texas, Usa, Ryan J. Jacques 2017 Stephen F Austin State University

Herbivory Impacts On Growth And Survival Of Seedlings In Bottomland Hardwood Forest Restoration Sites In The Post Oak Savannah And Blackland Prairie Ecoregions Of Texas, Usa, Ryan J. Jacques

Electronic Theses and Dissertations

Interest in bottomland hardwood forests (BLHW) ecology and restoration has increased over the past 40 years. These communities aid in water quality improvement, streambank stabilization, and urban expansion mitigation. They also provide important habitat for many species of wildlife. Since the majority of remaining BLHW are degraded due to land fragmentation, restoration attempts are becoming commonplace within the Western Gulf Coastal Plain. However, restoration success has been mixed, with managers observing survival rates of <15% for desirable species due to various factors. Over two growing seasons, I investigated multiple factors that have potential to limit BLHW restoration success in East Texas. Specifically, I tested the impacts of herbivory by white-tailed deer (Odocoileus virginianus) and feral swine (Sus scrofa) on Nuttall oak (Quercus texana Buckley), Shumard oak (Q. shumardii Buckley), bur oak (Q. macrocarpa Michx.), and pecan (Carya ...


Flight Activity, Oviposition Pit Distribution, And Emergence Densities Of Monochamus Titillator And M. Carolinensis In The Ozark-St. Francis National Forest In Arkansas, Jake Bodart 2017 University of Arkansas, Fayetteville

Flight Activity, Oviposition Pit Distribution, And Emergence Densities Of Monochamus Titillator And M. Carolinensis In The Ozark-St. Francis National Forest In Arkansas, Jake Bodart

Theses and Dissertations

Monochamus (Coleoptera: Cerambycidae) are a genus of longhorn beetles commonly known as pine sawyers. They have a worldwide distribution coincident with pines (Pinaceae) and are vectors of the pinewood nematode (Bursaphelenchus xylophilus). In the United States, there are eight known Monochamus species and they have a sympatric distribution with at least one other Monochamus species throughout their range. Monochamus are known to attack stressed, dead, and dying conifers especially pines. In the Ozark- St. Francis National Forest in Arkansas, there are two species of pine sawyers and they share this sympatric distribution observed throughout the United States, M. titillator (southern ...


Collecting Landscape Trees And Shrubs In Ukraine For The Evaluation Of Aesthetic Quality And Adaptation In The North Central United States, Mark P. Widrlechner, Robert E. Schutzki, Vasily Y. Yukhnovsky, Victor V. Sviatetsky 2017 United States Department of Agriculture

Collecting Landscape Trees And Shrubs In Ukraine For The Evaluation Of Aesthetic Quality And Adaptation In The North Central United States, Mark P. Widrlechner, Robert E. Schutzki, Vasily Y. Yukhnovsky, Victor V. Sviatetsky

Mark P. Widrlechner

Past experiences with long-term evaluations of woody landscape plants from Slovenia, Croatia, and Bosnia- Herzegovina in the north central United States indicated that a relatively low proportion of these introductions were well adapted to climatic and soil conditions. Based on these results, criteria were developed to focus future exploration for landscape trees and shrubs from more analogous environments in eastern and central Europe. Application of these criteria identified the forest– steppe transition zone in the northern half of Ukraine as a region with great potential, because of similarities to the north central United States in climatic extremes, soil types and ...


Tennessee Valley Authority, Division Of Forestry (Sc 3100), Manuscripts & Folklife Archives 2017 Western Kentucky University

Tennessee Valley Authority, Division Of Forestry (Sc 3100), Manuscripts & Folklife Archives

MSS Finding Aids

Finding aid only for Manuscripts Small Collection 3100. Report on the forestry reconnaissance of the proposed Gilbertsville, Kentucky, reservoir area. Prepared by the Tennessee Valley Authority, Division of Forestry, November, 1936. Contains black and white photographs.


Can Carbon Fluxes Explain Differences In Soil Organic Carbon Storage Under Aspen And Conifer Forest Overstories?, Antra Boca, Helga Van Miegroet 2017 Utah State University

Can Carbon Fluxes Explain Differences In Soil Organic Carbon Storage Under Aspen And Conifer Forest Overstories?, Antra Boca, Helga Van Miegroet

Wildland Resources Faculty Publications

Climate- and management-induced changes in tree species distributions are raising questions regarding tree species-specific effects on soil organic carbon (SOC) storage and stability. Quaking aspen (Populus tremuloides Michx.) is the most widespread tree species in North America, but fire exclusion often promotes the succession to conifer dominated forests. Aspen in the Western US have been found to store more SOC in the mineral soil than nearby conifers, but we do not yet fully understand the source of this differential SOC accumulation. We measured total SOC storage (0–50 cm), characterized stable and labile SOC pools, and quantified above- and belowground ...


A Tree Species Effect On Soil That Is Consistent Across The Species’ Range: The Case Of Aspen And Soil Carbon In North America, Jerome Laganiere, Antra Boca, Helga Van Miegroet, David Paré 2017 Canadian Forest Service

A Tree Species Effect On Soil That Is Consistent Across The Species’ Range: The Case Of Aspen And Soil Carbon In North America, Jerome Laganiere, Antra Boca, Helga Van Miegroet, David Paré

Wildland Resources Faculty Publications

Trembling aspen covers a large geographic range in North America, and previous studies reported that a better understanding of its singular influence on soil properties and processes is of high relevance for global change questions. Here we investigate the potential impact of a shift in aspen abundance on soil carbon sequestration and soil carbon stability at the continental scale by conducting a systematic literature review using 23 published studies. Our review shows that aspen’s effect on soil carbon is relatively consistent throughout the species range. Aspen stores less C in the forest floor but similar amounts in the mineral ...


Data For Allometric Equations Of Chrysolepis Sempervirens, Cornus Sericea, Corylus Cornuta Ssp. Californica, And Leucothoe Davisiae., J. A. Lutz, J. A. Freund, A. J. Larson, M. E. Swanson, T. J. Furniss, K.M. L. Becker, E. M. Blomdahl, C. A. Cansler, S. J. Germain, S. M. A. Jeronimo 2017 Utah State University

Data For Allometric Equations Of Chrysolepis Sempervirens, Cornus Sericea, Corylus Cornuta Ssp. Californica, And Leucothoe Davisiae., J. A. Lutz, J. A. Freund, A. J. Larson, M. E. Swanson, T. J. Furniss, K.M. L. Becker, E. M. Blomdahl, C. A. Cansler, S. J. Germain, S. M. A. Jeronimo

Browse all Datasets

This data set includes measurements of 40 stems of Chrysolepis sempervirens (Kellogg) Hjelmq. (bush chinquapin), 41 stems of Cornus sericea L. (redosier dogwood), 50 stems of Corylus cornuta Marsh. ssp. californica (A. DC.) E. Murray, and 40 stems of Leucothoe davisiae Torrey (Sierra laurel), as reported in Lutz et al. (2014, 2017). Nomenclature follows Flora of North America (1993+).


Forest Composition And Growth In A Freshwater Forested Wetland Community Across A Salinity Gradient In South Carolina, Usa, Xijun Liu, William Conner, Bo Song, Anand D. Jayakaran 2017 Anhui University

Forest Composition And Growth In A Freshwater Forested Wetland Community Across A Salinity Gradient In South Carolina, Usa, Xijun Liu, William Conner, Bo Song, Anand D. Jayakaran

Publications

Tidal freshwater forested wetlands (TFFW) of the southeastern United States are experiencing increased saltwater intrusion mainly due to sea-level rise. Inter-annual and intra-annual variability in forest productivity along a salinity gradient was studied on established sites. Aboveground net primary productivity (ANPP) of trees was monitored from 2013 to 2015 on three sites within a baldcypress (Taxodium distichum) swamp forest ecosystem in Strawberry Swamp on Hobcaw Barony, Georgetown County, South Carolina. Paired plots (20 × 25-m) were established along a water salinity gradient (0.8, 2.6, 4.6 PSU). Salinity was continuously monitored, litterfall was measured monthly, and growth of overstory ...


Timber Talk, Vol. 55, No. 1, March 2017, 2017 University of Nebraska - Lincoln

Timber Talk, Vol. 55, No. 1, March 2017

Timber Talk: Nebraska Forest Industry Newsletter

In This Issue

Lumber Market Reports 1

Hardwood Lumber Prices 2

Hardwood Lumber Market History 3

Bringing Innovative Timber Construction to Nebraska 4

Using Biochar to Reduce Cattle Emissions 5

Nebraska Forest Industry Spotlight 6

Timber Appraisals 6

Nebraska Wood Energy Team Conducting Statewide Analysis 7

Trading Post 8


Vegetative Comunitiy Development Over 30 Years Within Pine Plantations On Reclaimed Mine Land In East Texas., Christy Christian, Brian P. Oswald, Hans M. Williams, Kenneth W. Farrish 2017 stephen f. austin

Vegetative Comunitiy Development Over 30 Years Within Pine Plantations On Reclaimed Mine Land In East Texas., Christy Christian, Brian P. Oswald, Hans M. Williams, Kenneth W. Farrish

Faculty Publications

No abstract provided.


Divergent Trends In Ecosystem Services Under Different Climate-Management Futures In A Fire-Prone Forest Landscape, Joshua S. Halofsky, Jessica E. Halofsky, Miles A. Hemstrom, Anita T. Morzillo, Xiaoping Zhou, Daniel C. Donato 2017 Washington State Department of Natural Resources

Divergent Trends In Ecosystem Services Under Different Climate-Management Futures In A Fire-Prone Forest Landscape, Joshua S. Halofsky, Jessica E. Halofsky, Miles A. Hemstrom, Anita T. Morzillo, Xiaoping Zhou, Daniel C. Donato

Institute for Natural Resources Publications

While ecosystem services and climate change are often examined independently, quantitative assessments integrating these fields are needed to inform future land management decisions. Using climate-informed state-and-transition simulations, we examined projected trends and trade-offs for a suite of ecosystem services under four climate change scenarios and two management scenarios (active management emphasizing fuel treatments and no management other than fire suppression) in a fire-prone landscape of dry and moist mixed-conifer forests in central Oregon, USA. Focal ecosystem services included fire potential (regulating service), timber volume (provisioning service), and potential wildlife habitat (supporting service). Projections without climate change suggested active management in ...


An Artificial Neural Network For Real-Time Hardwood Lumber Grading, Edward Thomas 2017 USDA Forest Service

An Artificial Neural Network For Real-Time Hardwood Lumber Grading, Edward Thomas

USDA Forest Service / UNL Faculty Publications

Computerized grading of hardwood lumber according to NHLA rules would permit fast assessment of sawn lumber and the evaluation of potential edging and trimming operations to improve lumber value. More importantly, to enable optimization of the hardwood lumber sawing process, a fast means of evaluating the potential value of boards before they are sawn is necessary. As log and lumber scanning systems become prevalent and common, these needs become more pressing. From an automation perspective, the NHLA lumber grades are difficult to implement efficiently in a computer program. Exhaustive approaches that examine every potential cutting size and combination to determine ...


Interactions Between White-Tailed Deer Density And The Composition Of Forest Understories In The Northern United States, Matthew B. Russell, Christopher W. Woodall, Kevin M. Potter, Brian F. Walters, Grant M. Domke, Christopher M. Oswalt 2017 University of Minnesota

Interactions Between White-Tailed Deer Density And The Composition Of Forest Understories In The Northern United States, Matthew B. Russell, Christopher W. Woodall, Kevin M. Potter, Brian F. Walters, Grant M. Domke, Christopher M. Oswalt

USDA Forest Service / UNL Faculty Publications

Forest understories across the northern United States (US) are a complex of tree seedlings, endemic forbs, herbs, shrubs, and introduced plant species within a forest structure defined by tree and forest floor attributes. The substantial increase in white-tailed deer (Odocoileus virginianus Zimmerman) populations over the past decades has resulted in heavy browse pressure in many of these forests. To gain an objective assessment of the role of deer in forested ecosystems, a region-wide forest inventory across the northern US was examined in concert with white-tailed deer density information compiled at broad scales. Results indicate that deer density may be an ...


Residential Building Energy Conservation And Avoided Power Plant Emissions By Urban And Community Trees In The United States, David J. Nowak, Nathaniel Appleton, Alexis Ellis, Eric Greenfield 2017 USDA Forest Service

Residential Building Energy Conservation And Avoided Power Plant Emissions By Urban And Community Trees In The United States, David J. Nowak, Nathaniel Appleton, Alexis Ellis, Eric Greenfield

USDA Forest Service / UNL Faculty Publications

Urban trees and forests alter building energy use and associated emissions from power plants by shading buildings, cooling air temperatures and altering wind speeds around buildings. Field data on urban trees were combined with local urban/community tree and land cover maps, modeling of tree effects on building energy use and pollutant emissions, and state energy and pollutant costs to estimate tree effects on building energy use and associated pollutant emissions at the state to national level in the conterminous United States. Results reveal that trees and forests in urban/community areas in the conterminous United States annually reduce electricity ...


Review Of Bird Brain: An Exploration Of Avian Intelligence By Nathan Emery, Alan B. Bond 2017 University of Nebraska-Lincoln

Review Of Bird Brain: An Exploration Of Avian Intelligence By Nathan Emery, Alan B. Bond

Avian Cognition Papers

Over the past 30 years, the study of bird behavior has been completely transformed by the ongoing revolution in cognitive psychology, opening up wholly new perspectives on the mental processes underlying such areas as foraging decisions, social intelligence, problem solving, memory encoding, and communication. Although these studies have contributed to a number of recent popular books, until now there has been no attempt to integrate avian cognition and recent findings in avian neuroanatomy and endocrinology into a single account that is attractive and accessible to a general readership. It is a steep challenge, but Nathan Emery has undertaken it in ...


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