Digital Commons Network^™

Major Negative Impacts Of Early Intensive Cattle Stocking On Tallgrass Prairies: The Case Of The Greater Prairie-Chicken (Tympanuchus Cupido), Mark B. Robbins, A. Townsend Peterson, Miguel A. Ortega-Huerta

North American Birds

No abstract provided.

Cooperative Upland Wildlife Research And Surveys, Alan Woolf, Wayne E. Thogmartin, Whitney Weber

Final Reports Archive

No abstract provided.

Status And Recent Nesting Of Muscovy Duck (Cairina Moschata) In The Rio Grande Valley, Texas, Tim Brush, Jack C. Eitniear

Bulletin of the Texas Ornithological Society

No abstract provided.

Monthly Accomplishments For Turnbull National Refuge, June 2002, Turnbull National Wildlife Refuge

Turnbull National Wildlife Refuge Reports

A monthly report of accomplishments at Turnbull National Wildlife Refuge written by Project Leader Nancy Curry.

Spectator 2002-05-16, Editors Of The Spectator

The Spectator

No abstract provided.

Insights, Spring, 2002, Utah State University

Discovery Magazine

Bi-annual alumni newsletter for the College of Science of Utah State University in Logan.

Monthly Accomplishments For Turnbull National Refuge, May 2002, Turnbull National Wildlife Refuge

Turnbull National Wildlife Refuge Reports

A monthly report of accomplishments at Turnbull National Wildlife Refuge written by Project Leader Nancy Curry.

Masting By Eighteen New Zealand Plant Species: The Role Of Temperature As A Synchronizing Cue, Eric M. Schauber, Dave Kelly, Peter Turchin, Chris Simon, William G. Lee, Robert B. Allen, Ian J. Payton, Peter R. Wilson, Phil E. Cowan, R E. Brockie

Publications

Masting, the intermittent production of large flower or seed crops by a population of perennial plants, can enhance the reproductive success of participating plants and drive fluctuations in seed-consumer populations and other ecosystem components over large geographic areas. The spatial and taxonomic extent over which masting is synchronized can determine its success in enhancing individual plant fitness as well as its ecosystem-level effects, and it can indicate the types of proximal cues that enable reproductive synchrony. Here, we demonstrate high intra- and intergeneric synchrony in mast seeding by 17 species of New Zealand plants from four families across >150000 km …

The Ecology Of Lianas And Their Role In Forests, Stefan A. Schnitzer, Frans Bongers

Biological Sciences Faculty Research and Publications

Recent studies have demonstrated the increasingly important role of lianas (woody vines) in forest regeneration, species diversity and ecosystem-level processes, particularly in the tropics. Mechanisms responsible for the maintenance of liana species diversity could yield new insights into the maintenance of overall species diversity. Lianas contribute to forest regeneration and competition, not only by competing directly with trees, but also by differentially affecting tree species and thus changing how trees compete among themselves. In addition, they contribute considerably to ecosystem-level processes, such as whole-forest transpiration and carbon sequestration. As the rate of tropical forest disturbance increases, they are likely to …

Coyote Foraging Ecology, Vigilance, And Behavioral Cascades In Response To Gray Wolf Reintroduction In Yellowstone National Park, T. Adam Switalski

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Vigilance behavior can aid in the detection of predators and may also play a role in observation of conspecifics, in food acquisition, and in the prevention of kleptoparasitism. However, in most occasions, vigilance is most important as an antipredator function. Generally, factors that increase the risk of predation also increase the amount of vigilance. We examined whether the reintroduction of the large predator, the wolf, in Yellowstone National Park (YNP) would influence coyote vigilance and foraging ecology. From December 1997 to July 2000, we collected 1743 h of coyote activity budgets. Coyote home ranges occurred within wolf territories (termed high-use …

Microbial Ecology Of Freshly Sawn Yellow-Poplar Lumber ( Liriodendron Tulipifera L.) In Two Seasons, Mark Ryan Mikluscak

Graduate Theses, Dissertations, and Problem Reports (ETD)

Each year, the forest products industry sustains considerable product loss due to a reduction in market value of lumber brought about by microbial discoloration. The current practice of treating green lumber with chemical biocides to protect it from discoloration, although successful, is a potential hazard to both the environment and human life. One potential alternative to chemical biocides is biological control. The most recent success in the field of biological control has been achieved in the agricultural industry by first studying the microbial ecology of the substrate in which the biologically based preservative is to be used. Literature on microbial …

Statmod: A Tool For Interfacing Arcview® Gis With Statistical Software To Facilitate Predictive Ecological Modeling, Christine M. Garrard

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As geographical information systems and spatial data become more accessible, predictive spatial modeling in ecology is becoming more common. Unfortunately, not all ecologists possess the necessary skills to successfully combine statistical models and geographical information systems. In response to this problem, I wrote an extension for ArcView^® GIS called StatMod. This extension interfaces ArcView GIS with SAS^® and S-PLUS^® statistical software and walks the user through creating and mapping logistic regression and classification and regression tree models.

StatMod was then used to run a series of analyses that would have been difficult without such a tool. A …

Comparison Of Herpetofaunal Species Composition And Response To Edge On The Camp Dawson Collective Training Area, Preston County, West Virginia, Amy B. Spurgeon

Graduate Theses, Dissertations, and Problem Reports (ETD)

Herpetofaunal species composition, abundance, and diversity were evaluated on the Camp Dawson Collective Training Area, Preston County, West Virginia, as a requirement of the Sikes Act (16 USC 670a et seq.), Army Regulation 200-3, and Department of Defense Instruction 4715.3. Herpetofauna were sampled using pitfall traps with drift fences and double-ended funnel traps, and also from area searches. Redback salamander (Plethodon cinereus), red-spotted newt (Notophthalmus v. viridescens ), eastern American toad (Bufo a. americanus), and wood frog (Rana sylvatica) were most common in pitfall arrays; mountain dusky salamander (Desmognathus ochrophaeus), Appalachian seal salamander (Desmognathus m. monticola), and redback salamander were …

The Travel Behavior And Needs Of The Poor: A Study Of Welfare Recipients In Fresno County, California, Mti Report 01-23, Evelyn Blumenberg, Peter J. Haas

Mineta Transportation Institute

The passage of the Personal Responsibility and Work Opportunity Reconciliation Act of 1996 fundamentally transformed the provision of social assistance in the United States. Gone is Aid to Families with Dependent Children (AFDC), a program that entitled needy families with children to an array of benefits and public services. In its place is Temporary Assistance to Needy Families (TANF), a program that abolishes federal entitlements, provides flexible block grants to the states, mandates tough new work requirements, and imposes a five-year lifetime limit on the receipt of public assistance. Current welfare programs mandate employment for most recipients and offer temporary …

The Role Of Copepods In The Distribution Of Hydrocarbons: An Experimental Approach, Switgard Duesterloh

Fisheries

Copepods may provide a significant pathway for the concentration and transfer of polyaromatic compounds (PAC) to higher trophic level consumers. PAC dissolved from weathered crude oil are more persistent in the environment and have much higher toxicity than the lighter, more volatile fractions of crude oil. Because of their polarity, PAC tend to accumulate in bio-lipids. Subarctic copepod species can contain up to 80% of their body dry weight in lipids and have a high surface area to volume ratio. Thus, PAC accumulation is rapid and bioaccumulation factors are in the order of 500--8000, depending upon species and lipid content. …

R.I.T. News & Events - April 12, 2002, University News Services, Rochester Institute Of Technology

University Publications

No abstract provided.

Montana Kaimin, April 11, 2002, Associated Students Of The University Of Montana

Montana Kaimin, 1898-present

Student newspaper of the University of Montana, Missoula.

Spectator 2002-04-04, Editors Of The Spectator

The Spectator

No abstract provided.

Monthly Accomplishments For Turnbull National Refuge, April 2002, Turnbull National Wildlife Refuge

Turnbull National Wildlife Refuge Reports

A monthly report of accomplishments at Turnbull National Wildlife Refuge written by Project Leader Nancy Curry.

Pages News, Volume 10, No. 1, April 2002, Isabelle Larocque, Christoph Kull, Keith Alverson

PAGES

Contents: Editorial: PAGES Visiting Scientists -- Your Opinion Counts -- Call for SSC Nominations -- New on the PAGES Bookshelf -- Inside PAGES -- Start Young Scientist Award Program -- Program News -- The ARI-Program of the European Union --Pep III News -- Science Highlights -- Tree Ring Variations in the Himalayas -- Fire and Climate in the Western Americas -- Treeline Dendroclimatology in the North Americas Tropics -- South American Dendrochronology -- Post Fire Dynamics in Switzerland -- Bristlecone Pines of Methuselah Walk -- Fire Frequency in the Eastern Canadian Boreal Forests -- Recent Fennoscandian Pine Records -- Workshop …

Mapping Environmental Injustices: Pitfalls And Potential Of Geographic Information Systems In Assessing Environmental Health And Equity., Juliana Maantay

Publications and Research

Geographic Information Systems (GIS) have been used increasingly to map instances of environmental injustice, the disproportionate exposure of certain populations to environmental hazards. Some of the technical and analytic difficulties of mapping environmental injustice are outlined in this article, along with suggestions for using GIS to better assess and predict environmental health and equity. I examine 13 GIS-based environmental equity studies conducted within the past decade and use a study of noxious land use locations in the Bronx, New York, to illustrate and evaluate the differences in two common methods of determining exposure extent and the characteristics of proximate populations. …

Summer Vertical Phytoplankton Distribution In The Lower Chesapeake Bay, Mollie Jill Weinstein

Biological Sciences Theses & Dissertations

Autotrophic picoplankton and phytoplankton composite samples were collected from the surface, pycnocline, and bottom water layers at three stations in the lower Chesapeake Bay between June and September 1993. Using light microscopy a total of 170 phytoplankton taxa were identified. Utilizing epifluorescent microscopy, the picoplankton taxa were distinguished by size, representing species with cells less than 2 microns. Diatoms were the dominant taxa during this period, with lesser representation by the other phytoplankton components. Within the picoplankton category, cyanobacteria were dominant. Statistical analyses of the data indicated the vertical composition and abundance of the phytoplankton was not significantly different over …

Anting Behavior In Birds: Ant Selection And Effect Of Ant Chemistry On Feather Ectoparasites, Hannah Carrington Revis

Biological Sciences Theses & Dissertations

Active anting behavior occurs when songbirds apply ants to their feathers. During anting displays, a bird draws its wings forward in front of the head and swings its tail around to the far right or left. Both wing and tail feathers are then rubbed with ants held in the bird's beak. The potential associations among ants, feather ectoparasites and birds make anting behavior an important community-level interaction. Although this behavior is cosmopolitan in distribution and occurs in a wide variety of passerine birds, it remains poorly understood. This dissertation tested hypotheses about anting behavior through controlled experiments with captive songbirds …

Ecological Studies Of Wolves On Isle Royale, 2001-2002, Rolf O. Peterson, John A. Vucetich

Ecological Studies of Wolves on Isle Royale

Annual Report 2001-2002

The Courier, Volume 35, Issue 17, March 8, 2002, The Courier, College Of Dupage

The Courier

Stories:

Sen. Dan Cronin Honored At MAC

Ergonomic Furniture Blends Comfort With Practicality

Forensics Team Takes Home Nine Trophies

Lady Chaps Look Good In Gold (Basketball)

Chaps Surprise All–Men's Basketball Wins Region IV Championship

A Day With Public Safety

People:

Dan Cronin

Gregory Joos

Edgar Torres

Trent Owen

Nirav Shah

Draft Plan Of Management For The Proposed Miaboolya Beach Fish Habitat Protection Area., Department Of Fisheries Western Australia

Fisheries Management Papers

The aims of the proposal outlined in this draft management plan is to protect and rehabilitate the aquatic habitat of Miaboolya Beach, the associated mangrove ecosystem, and involve the community in their management.

By setting the area aside as a FHPA, the Department of Fisheries will establish a framework to promote and actively conserve all the habitats within the Miaboolya system, as described in Section 3 of this document.

Endangered Species Bulletin, March/June 2002 - Vol. Xxvii No. 2

Endangered Species Bulletin

In this issue:
4 Lands of Contrast, Diversity, and Beauty
8 Endangered Species and the Arizona-Sonora Desert Museum
12 The Sonoran Desert Conservation Plan
16 The Chihuahuan Desert: Diversity at Risk
18 Restoring a Desert Oasis
20 Desert Fish: Life on the Edge
22 Life in Mauna Kea’s Alpine Desert
24 The Tarahumara Frog: Return of a Native
27 Leading-edge Science for Imperiled Bonytail
28 Las Vegas Places its Bets on Habitat Plan
30 Arizona Tribal Partnerships for Wildlife
32 New Mexico’s Little Known Treasures
34 Rio Grande Silvery Minnow
36 Black-footed Ferrets Return to Mexico
38 Regional News and …

Groundwater Flow Through A Constructed Treatment Wetland, Andrew C. Entingh

Theses and Dissertations

This study examines the flow of groundwater through one of the treatment cells. A major goal of the study is to determine whether the system design facilitates uniform vertical flows through the subsurface soil sediments or if preferential flows occur. Conceptually, uniform flows will achieve the most efficient degree of contaminant removal possible by evenly dispersing the groundwater contaminants throughout the full volume of the subsurface media. A three-dimensional grid of piezometers is used to generate potentiometric contour maps, and in-situ tests of hydraulic conductivity facilitate construction of a numerical computer model. The contours of hydraulic head, measured conductivities, and …

Oral Rabies Vaccination: A National Perspective On Program Development And Implementation, Dennis Slate, Richard B. Chipman, Charles E. Rupprecht, Thomas J. Deliberto

United States Department of Agriculture Wildlife Services: Staff Publications

Persistence of unique rabies virus variants in a diverse array of terrestrial carnivores and insectivorous bats makes rabies control in the US. a complex task The public health system in the U.S. is effective in keeping human deaths near zero each year in the face of enzootic wildlife rabies, but the annual cost of coexistence with the disease is high, exceeding $300 million. In addition, each year tens of thousands of people are impacted by anxiety, fear, and trauma associated with potential or actual rabies exposure to themselves and their domestic animals. Exclusion, proper storage and disposal of garbage, and …

Improving Seed Germination Of Salicornia Rubra (Chenopodiaceae) Under Saline Conditions Using Germination-Regulating Chemicals, M. Ajmal Khan, Bilquees Gul, Darrell J. Weber

Western North American Naturalist

Salicornia rubra Nels. (Chenopodiaceae) is a salt-tolerant annual species occurring in salt playas of the Great Basin desert in western United States. It forms pioneer communities on the most saline location of an inland salt playa at Goshen, Utah. Seeds of Salicornia rubra are capable of germinating at 1000 mM NaCl at 25–35 °C alternating temperature regime. Dormancy-regulating chemicals were evaluated for their ability to alleviate the innate and salinityenforced dormancy in seeds of Salicornia rubra. Betaine, GA3, kinetin, fusicoccin, ethephon, thiourea, proline, and nitrate had no effect in alleviating primary dormancy. Increases in NaCl concentration progressively inhibited germination …