Life Sciences Commons^™

Subplot Data (3 One Meter Square Subplots/Plot) For Deer Exclosure Plot, Old Farm 12, West Chester University Of Pennsylvania

Deer and Non-native Invasive Plant Impact Study Documents

No abstract provided.

Subplot Data (3 One Meter Square Subplots/Plot) For Deer Exclosure Plot, Floodplain 4f, West Chester University Of Pennsylvania

Deer and Non-native Invasive Plant Impact Study Documents

No abstract provided.

Subplot Data (3 One Meter Square Subplots/Plot) For Deer Exclosure Plot, Floodplain 5f, West Chester University Of Pennsylvania

Deer and Non-native Invasive Plant Impact Study Documents

No abstract provided.

Subplot Data (3 One Meter Square Subplots/Plot) For Deer Exclosure Plot, Floodplain 6f, West Chester University Of Pennsylvania

Deer and Non-native Invasive Plant Impact Study Documents

No abstract provided.

Subplot Data (3 One Meter Square Subplots/Plot) For Deer Exclosure Plot, Floodplain 4, West Chester University Of Pennsylvania

Deer and Non-native Invasive Plant Impact Study Documents

No abstract provided.

Subplot Data (3 One Meter Square Subplots/Plot) For Deer Exclosure Plot, Floodplain 7, West Chester University Of Pennsylvania

Deer and Non-native Invasive Plant Impact Study Documents

No abstract provided.

Subplot Data (3 One Meter Square Subplots/Plot) For Deer Exclosure Plot, Floodplain 2f, West Chester University Of Pennsylvania

Deer and Non-native Invasive Plant Impact Study Documents

No abstract provided.

Pb1650 Understanding Log Scales And Log Rules, Brian Bond

Forestry, Trees, and Timber

Version 2.0

Maintenance Of Genetic Diversity In Cordia Africana Lam., A Declining Forest Tree Species In Ethiopia, Abayneh Derero, Oliver Gailing, Reiner Finkeldey

Michigan Tech Publications

We assessed genetic variation in a total of 22 populations of the tree species Cordia africana Lam. in Ethiopia and analyzed the country-wide impact of population history, forest disturbance and alteration of land use on extant intraspecific diversity. Amplified Fragment Length Polymorphisms (AFLPs) and chloroplast microsatellite markers were investigated. The analyses of the AFLP data revealed high diversity in all investigated populations: the percentage of polymorphic loci (PPL) ranged from 62.2% to 92.2% and Nei's gene diversity from 0.220 to 0.320 within the populations. The mean PPL and the mean diversity within populations were 85.7% and 0.287, respectively. The analysis …

Soil Erosion Modeling With The Modified Universal Soil Loss Equation, Yanli Zhang, Jason Grogan, I-Kuai Hung, Ramanathan Sugumaran

Faculty Publications

No abstract provided.

Pb1798 Uneven-Age Management In Mixed Species, Southern Hardwoods: Is It Feasible And Sustainable?, Wayne K. Clatterbuck, Jeffrey W. Stringer, Larry Tankersley

Forestry, Trees, and Timber

Version 2.0

Pb1800 A Guide For Matching Oak Species With Sites During Restoration Of Loess-Influenced Bottomlands In The West Gulf Coastal Plain, David Mercker, Ryan Blair, Don Tyler, Joshua Smith

Forestry, Trees, and Timber

Version 3.0

Pb1799 Site Preparation For Natural Regeneration Of Hardwoods, Wayne K. Clatterbuck, Greg R. Armel

Forestry, Trees, and Timber

Version 1.0

The Heat Is On: A Look Into New England's Future Climate, David Nicosia

Wrack Lines

What will New England's climate be like over the next century, given global warming and climate change? Could New England lose its colorful fall foliage?

W253 Are Fast-Grown Trees Of Low Quality?, Adam Taylor, Jennifer Franklin

Forestry, Trees, and Timber

Version 4.0

Bioretention: Evaluating Their Effectiveness For Improving Water Quality In New England Urban Environments, Mary Dehais

Masters Theses 1911 - February 2014

Nonpoint source (NPS) pollution is one of the leading causes of water quality problems in the United States. Bioretention has become one of the more frequently used stormwater management practices for addressing NPS pollution in urbanized watersheds in New England. Yet despite increased acceptance, bioretention is not widely practiced. This study explores and evaluates the efficacy of bioretention for protecting urban water quality.

This research found that numerous monitoring methods are used by researchers and industry experts to assess the effectiveness of stormwater best management practices (BMPs) and low impact development (LID) practices that include bioretention. The two most common …

Status, Movements, And Habitat Use Of Moose In Massachusetts, David W. Wattles

Masters Theses 1911 - February 2014

Moose (Alces alces) have been re-established in much of the historic range in the northeastern United States. Recently the southern edge of the species ranges has been extended southward into southern New England and northern New York from established populations in northern New England. The southern expansion raised questions as to the ability of this northern species to cope with higher temperatures, areas densely populated by humans, and different forest types further south. In light of these recent developments, we conducted a literature search on moose in the northeastern United States and distributed a questionnaire and conducted phone …

Evaluating The Influence Of Disturbance And Climate On Red Spruce (Picea Rubens Sarg.) Community Dynamics At Its Southern Range Margin, Relena R. Ribbons

Masters Theses 1911 - February 2014

Picea rubens(red spruce) populations experienced a synchronous rangewide decline in growth and vigor starting in the 1960’s, which was likely caused by climate change or environmental disturbances (e.g., acid deposition); However, it is yet unknown if populations continue to decline or have recovered. In the context of global warming, red spruce is a species of concern because it is at its southern continuous range margin in Massachusetts. This study uses tree-ring data coupled with population data from permanent plots to quantify the status of red spruce in Massachusetts. Tree cores were extracted from red spruce and used to examine …

Carbon Changes In Conterminous Us Forests Associated With Growth And Major Disturbances., Daolan Zheng, Linda S. Heath, Mark J. Ducey, James E. Smith

Natural Resources & the Environment

Abstract

We estimated forest area and carbon changes in the conterminous United States using a remote sensing based land cover change map, forest fire data from the Monitoring Trends in Burn Severity program, and forest growth and harvest data from the USDA Forest Service, Forest Inventory and Analysis Program. Natural and human-associated disturbances reduced the forest ecosystems' carbon sink by 36% from 1992 to 2001, compared to that without disturbances in the 48 states. Among the three identified disturbances, forest-related land cover change contributed 33% of the total effect in reducing the forest carbon potential sink, while harvests and fires …

Timber Talk, Vol. 49, No. 4, November 1, 2011

Timber Talk: Nebraska Forest Industry Newsletter

Lumber Market News; Hardwood Lumber Price Trends—Green; Hardwood Lumber Price Trends—Kiln Dried; The Business Plan: Critical To Start-Up And Growth; A Baker’s Dozen Marketing Tips; Nebraska Forestry Industry Spotlight; The Trading Post; Proper Method of Bore Cutting Revisited; Timber Sales.

Use Of Waveform Lidar And Hyperspectral Sensors To Assess Selected Spatial And Structural Patterns Associated With Recent And Repeat Disturbance And The Abundance Of Sugar Maple (Acer Saccharum Marsh.) In A Temperate Mixed Hardwood And Conifer Forest., Jeanne E. Anderson, Mark J. Ducey, Andrew J. Fast, Mary E. Martin, Lucie C. Lepine, Marie-Louise Smith, Thomas D. Lee, Ralph O. Dubayah, Michelle A. Hofton, Peter Hyde, Birgit E. Peterson, J. Bryan Blair

Natural Resources & the Environment

Abstract

Waveform lidar imagery was acquired on September 26, 1999 over the Bartlett Experimental Forest (BEF) in New Hampshire (USA) using NASA's Laser Vegetation Imaging Sensor (LVIS). This flight occurred 20 months after an ice storm damaged millions of hectares of forestland in northeastern North America. Lidar measurements of the amplitude and intensity of ground energy returns appeared to readily detect areas of moderate to severe ice storm damage associated with the worst damage. Southern through eastern aspects on side slopes were particularly susceptible to higher levels of damage, in large part overlapping tracts of forest that had suffered the …

Synthesis Of Knowledge Of Extreme Fire Behavior: Volume I For Fire Managers, Paul Werth, Brian Potter, Craig Clements, Mark Finney, Scott Goodrick, Martin Alexander, Miguel Cruz, Jason Forthofer, Sara Mcallister

Faculty Publications, Meteorology and Climate Science

The National Wildfire Coordinating Group definition of extreme fire behavior (EFB) indicates a level of fire behavior characteristics that ordinarily precludes methods of direct control action. One or more of the following is usually involved: high rate of spread, prolific crowning/ spotting, presence of fire whirls, and strong convection column. Predictability is difficult because such fires often exercise some degree of influence on their environment and behave erratically, sometimes dangerously. Alternate terms include “blow up” and “fire storm.” Fire managers examining fires over the last 100 years have come to understand many of the factors necessary for EFB development. This …

Native Trees & Shrubs For Nebraska, Justin R. Evertson, Bob Henrickson

Nebraska Statewide Arboretum Publications

Native plants withstand Nebraska’s tough climate extremes and serve as vital habitat for wildlife like birds, butterflies, and bees. NOTE: “Nearly native” signifies a species that is native within 100 miles of Nebraska’s border and/or now naturalized within the state.

141 species, from
Acer negundo -­‐ boxelder maple
to
woodbine -­‐ Parthenocissus vitacea

Conservation Cuantitativa De Los Vertebrados, Michael J. Conroy, John P. Carroll, Juan Carlos Senar, Jeffrey J. Thompson

School of Natural Resources: Faculty Publications

Este libro es destinado para el uso por biólogos del campo y otras personas, incluso biólogos de campo en el futuro que podrían estar en un curso de la universidad y trabajando en estudios y conservación de animales. Nuestro objetivo es que los biólogos usen este libro como (haciendo apología a nuestro colega Evan Cooch) una ´´introducción suave´´ al campo de la ecología cuantitativa. Esperamos convencer a los lectores que los métodos y aproximaciones del libro no son solo para los matemáticos, estadísticos y programadores de computadoras, sino que de hecho son herramientas esenciales para practicar la conservación en el …

Cooper’S Hawk Nest Site Characteristics In The Pineywoods Region, Richard R. Schaefer, D. Craig Rudolph, Josh B. Pierce, Jesse F. Fagan

Faculty Publications

Early accounts describe the Cooper’s Hawk (Accipiter cooperi) as a species in decline in much of North America during the early twentieth century (Bent 1937), particularly when in close proximity to humans (Eaton 1914). This decreasing population trend continued to be recognized later in the century in both Texas (Oberholser 1974) and Louisiana (Lowery 1974). Shooting and trapping during the first half of the 1900s, and pesticide use (especially DDT) after World War II are suggested as primary causes of the decline (Henny and Wight 1972, Bednarz et al. 1990). The Migratory Bird Treaty Act of 1972 and the ban …

A Modified Stand Table Projection Model For Unmanaged Loblolly And Slash Pine Plantations In East Texas, Micky G. Allen Ii, Dean W. Coble, Quang V. Cao, Jimmie Yeiser, I-Kuai Hung

Faculty Publications

Four methodologies to project future trees per acre by diameter class were compared to develop a new modified stand table projection growth model for unmanaged loblolly pine (Pinus taeda L.) and slash pine (Pinus elliottii Engelm.) plantations in East Texas. The new models were fit to 92,882 observations from 153 permanent plots located in loblolly pine plantations and 33,792 observations from 71 permanent plots located in slash pine plantations throughout East Texas. The new models were validated with 12,750 observations from 22 permanent plots and 3,724 observations from 9 permanent plots located in loblolly and slash pine plantations, respectively. The …

A Mixed-Effects Height-Diameter Model For Individual Loblolly And Slash Pine Trees In East Texas, Dean W. Coble, Young Jin Lee

Faculty Publications

A new mixed-effects model was developed that predicts individual-tree total height for loblolly (Pinus taeda) and slash pine (Pinus elliottii) as a function of individual-tree diameter (in.), dominant height (ft), quadratic mean diameter (in.), and maximum stand diameter (in.). Data from 119,983 loblolly pine and 42,697 slash pine height– diameter observations collected on 185 loblolly pine and 84 slash pine permanent plots located in plantations throughout East Texas were used for model fitting. This new model is an improvement over earlier models fit with ordinary least squares, in that it can be calibrated to a new stand with observed height– …

Spread Of Plague Among Black-Tailed Prairie Dogs Is Associated With Colony Spatial Characteristics, Christopher Frey, Tammi L. Johnson, Jack Cully Jr., Sharon K. Collinge, Chris Ray, Brett Sandercock

Faculty Publications

Sylvatic plague (Yersinia pestis) is an exotic pathogen that is highly virulent in black-tailed prairie dogs (Cynomys ludovicianus) and causes widespread colony losses and individual mortality rates >95%. We investigated colony spatial characteristics that may influence inter-colony transmission of plague at 3 prairie dog colony complexes in the Great Plains. The 4 spatial characteristics we considered include: colony size, Euclidean distance to nearest neighboring colony, colony proximity index, and distance to nearest drainage (dispersal) corridor. We used multi-state mark–recapture models to determine the relationship between these colony characteristics and probability of plague transmission among prairie dog colonies. Annual mapping of …

Stakeholders’ Attitudes Toward Black Bear In East Texas (Abstract), Williams Stephens Pat, Ray Darville, Adam Keul, Michael Legg, Christopher E. Comer

Faculty Publications

No abstract provided.

A Gis Tool For Plant Spatial Pattern Analysis, Yanli Zhang, Nathan Woodward, Daniel Unger, I-Kuai Hung, Brian P. Oswald, Kenneth W. Farrish

Faculty Publications

A GIS program, ArcPlantPattern, was developed with Visual Basic .NET and ArcObjects as an ArcGIS extension to assist the investigation of plant distribution patterns (species composition as occurrence probability and spacing as distances among species) and to design planting plan maps for patch planting. ArcPlantPattern is the first software of its kind. It can be used for arid and semiarid lands reclamation, burned area rehabilitation, or designing landscapes with a required plant community distribution. ArcPlantPattern may also be applicable to other spatial point pattern analysis, such as geology, geography and wildlife habitat.