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A Stable Isotopic Examination Of Particulate Organic Matter During Karenia Brevis Blooms On The Central West Florida Shelf: Hints At Nitrogen Sources In Oligotrophic Waters, Julie Ann Havens

USF Tampa Graduate Theses and Dissertations

Blooms of the red tide dinoflagellate Karenia brevis occur annually on the west Florida shelf. In the late summer/early fall months, background concentrations increase from 10³ cells L^-1 to excesses of 10⁶ cells L^-1. Blooms are most common between Tampa Bay and Charlotte Harbor, and may be maintained for months. The region’s hydrography may play a role in the initiation, maintenance and termination of blooms.

The west Florida shelf is depauperate in inorganic nutrients. Inorganic nitrogen and phosphorus rarely exceed the limits of detection, whereas dissolved organic nitrogen is often present at concentrations of 15 …

Cattle As Grazing Management And Seed Dispersal Tools For Increasing Native Species Diversity On Great Basin Rangelands, Marina K. Whitacre

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A series of experiments evaluated: 1) the influence of seed intake and gut retention time on seed passage, recovery, and germinability; 2) fecal seeding and broadcast /trampling as techniques to incorporate seeds into a well-established Agropyron desertorum (Fisch.) Schult. stand in Skull Valley , Utah; 3) intensive grazing as a means to reduce Agropyron biomass and increase establishment and survival of seeded species; and 4) the recovery and germinability of seed extracted from dung collected from the field. Two shrubs (Artemisia tridentata Nutt. ssp. wyomingensis Beetle & Young and Atriplex confertifolia Torr. & Frem.), a grass (Elymus elymoides (Raf.) …

Contemporary Visions Of Progress In Ecology And Thoughts For The Future, Brian M. Starzomski, Bradley J. Cardinale, Jennifer A. Dunne, Melinda J. Hillery, Carrie A. Holt, Meg A. Krawchuk, Melissa Lage, Sean Mcmahon, Michael C. Melnychuk

Research outputs pre 2011

Although ecological research is progressing rapidly, the answers to certain key questions continue to elude us. This paper considers several of the contemporary challenges facing ecology. (1) Terminology is voluminous and often poorly defined, resulting in inefficient communication. (2) The concept of scale affects our inferences about system structure and function, requiring us to continue an almost heuristic investigation of breaks, domains, and integration. New tools that more explicitly incorporate scalar issues will need to be developed for progress to take place in the field of ecology. (3) Increasingly, it is expected that applied questions will be solved in less …

Brown-Headed Cowbirds In Grasslands: Their Habitats, Hosts, And Response To Management, Jill Shaffer, Christopher Goldade, Meghan Dinkins, Douglas Johnson, Lawrence Igl, Betty Euliss

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

The brown-headed cowbird (Molothrus ater) is an obligate brood parasite whose numbers have increased in recent decades to the potential detriment of the species that they parasitize. Thus, most management efforts focus on discouraging brown-headed cowbird parasitism or controlling brown-headed cowbird populations. Keys to discouraging cowbird parasitism or controlling populations of brown-headed cowbirds in the Great Plains are maintaining large expanses of grassland, eliminating foraging areas (e.g., feedlots) and perch sites, and reducing the extent of overgrazed pastures.

Alternative Future Growth Scenarios For Conserving Open Space Along Utah's Wasatch Front: A Case Study For The Mountain Land Association Of Governments, Richard E. Toth

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Over the past 20 years, rapid suburban and second-home development along Utah's Wasatch Front has threatened to irreversibly alter the region 's character and quality of life. This rapid development has raised concern among federal, state, county and community leaders with respect to the protection of surface and subsurface water; public health, safety and welfare; public services and infrastructure, and open space. The major areas being developed include the valley edges and bottom lands, riparian zones, agricultural lands and bench areas. Since most of these areas are under private ownership, they are highly vulnerable to an array of development activities.

A Longitudinal Analysis Of Socioeconomic Differences In Obesity And Weight Change During The Early Adult Years, Young-Taek Kim

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Obesity has reached epidemic proportions in American society. However, not enough attention has been given to weight change by temporal and dynamic detailed social characteristics, controlled for unobserved heterogeneities nested in county and state. Using the National Longitudinal Survey Youth (NLSY79), this study examined weight change and its development into unhealthy conditions like being overweight or obese, in relation to change in social characteristics including life course events. This study also examined the social characteristics of remaining at a normal weight through all time intervals over a 19-year period. Using hierarchical linear multilevel analysis, this study found that changes in …

Effect Of Cryptobiotic Crust Type On Microarthropod Assemblages In Piñon-Juniper Woodland In Central New Mexico, S. L. Brantley, U. L. Shepherd

Western North American Naturalist

Cryptobiotic crusts make up an important part of the ground cover in arid systems. Along with their roles of retarding soil erosion and enhancing soil fertility, crusts may also be supporting local and regional arthropod biodiversity. We inventoried arthropod species in mossy, lichen, and mixed (lichen and mossy) cryptobiotic crusts at 2 sites in central New Mexico piñon-juniper habitat. We collected 240 crust samples and used a heptane flotation technique to extract the microarthropods. We found 39 species of microarthropods and small macroarthropods, with significantly fewer species on lichen. Species richness was higher in March than in August, but diversity …

Habitat Use By Brush Mice (Peromyscus Boylii) In Southeastern Arizona, Amy B. Gottesman, Michael L. Morrison, Paul R. Krausman

Western North American Naturalist

No abstract provided.

Full Issue, Vol. 64 No. 2

Western North American Naturalist

No abstract provided.

The Courier, Volume 37, Issue 21, April 23, 2004, The Courier, College Of Dupage

The Courier

Stories:

Resolution Passed Against Coca-Cola

Student Charged With Child Pornography

College Supports Library Week

Student Trustee Adjusts To New Position

SLC Vice President Looks Forward To Next Year

Courier Places First In ICCJA Overall Excellence Award

Weight Toss, Wait Loss–Atkins, The South Beach Diet, Weight Watchers, Zone

Speech Team Succeeds At National Competition

Violence In Juarez

The Life Of Bryan Displayed In ‘Godspell’

People:

Craig Blanchfield

Mike Foerstel

Keith Yearman

Steven Jackson

Sarah Lensink

Ken Krull

Birch: White Gold In The Boreal Forest, Deirdre Helfferich

Miscellaneous Publications

No abstract provided.

Agroborealis, Vol. 36, No. 2 (Winter 2004-2005), School Of Natural Resources And Agricultural Sciences

Agroborealis

Fire in Interior Alaska: Forest, fire, people, money: a balancing act for managers -- Watching the trees return -- Modeling fuels and fire to improve management: The summer of 2004 was a hot and smoky one for Alaska's Interior, focusing residents' attention on fire management issues. / Doreen Fitzgerald -- Wetlands and Wastewater Treatment in Alaska: Dave Maddux, a PhD graduate of SNRAS, has been bringing wholesome natural relief to communities in Alaska by building marshes for wastewater treatment. / Deirdre Helfferich -- Research Crops Do Double Duty: Experimental crops grown at the Agricultural and Forestry Experiment Station are examined …

Adolph Murie: Denali's Wilderness Conscience, Linda S. Franklin

Arctic and Northern Studies

Denali National Park, Alaska substantially owes its stature as Alaska's premier wilderness park to Adolph Murie. Forty years after he retired as park biologist, Murie still influences the perception and management of Denali National Park. Murie's development from childhood to esteemed scientist and wilderness advocate followed a linear progression. His rural upbringing under the tutelage of his older brother, Olaus Murie, cultivated his desire to be a biologist and his appreciation for wild places. His academic training in animal ecology solidified his belief that the management of natural areas must consider all species as essential and equally valuable. His pioneering …

The Courier, Volume 37, Issue 19, April 9, 2004, The Courier, College Of Dupage

The Courier

Stories:

Prairie Has A Controlled Burning

Mold Remediation Begins In Library

Not So-College Students A Part Of COD (full-day kindergarten)

Survey Through Eyes Of Students

The Laramie Prophet

‘Books For Africa’ A Success

MAC Gets ‘Weird’

DuPage Coaches Receive Honors

People:

Moises Kaufman

Sankaran Krishna

Steven Jackson

“Weird” Al Yankovic

Beth Mitchell

Marc Gamble

Don Klaas

Brianne Lavieri

A Spatial Analysis Of The Impact Of Development On Wetland Habitat In Mount Pleasant, South Carolina, Jenna Medlin

Masters Theses & Specialist Projects

In response to growing concerns over wetland habitat loss and the associated impact on water resources, federal and state legislation has been enacted to protect vulnerable wetland habitats from the impacts of humans. In order to examine the efficacy of current coastal resource policy and its implementation, a study was conducted in Mount Pleasant, South Carolina, a coastal city of the Atlantic, focusing on the quantification of wetland habitat change over time within a specific area of interest. The study incorporated an assessment of the effects of escalating population pressures and subsequent urban development on local wetland habitats due to …

Private Conservation Literature: A Survey, Andrew P. Morris

Natural Resources Journal

No abstract provided.

Ten Suggestions To Strengthen The Science Of Ecology, Gary E. Belovsky, Daniel B. Botkin, Todd A. Crowl, Kenneth W. Cummins, Jerry F. Franklin, Malcolm L. Hunter, Anthony Joern, David B. Lindenmayer, James A. Macmahon, Chris R. Margules, J. Michael Scott

Papers in Ecology

There are few well-documented, general ecological principles that can be applied to pressing environmental issues. When they discuss them at all, ecologists often disagree about the relative importance of different aspects of the science’s original and still important issues. It may be that the sum of ecological science is not open to universal statements because of the wide range of organizational, spatial, and temporal phenomena, as well as the sheer number of possible interactions.We believe, however, that the search for general principles has been inadequate to establish the extent to which generalities are possible.We suggest that ecologists may need to …

Ecological Studies Of Wolves On Isle Royale, 2003-2004, Rolf O. Peterson, John A. Vucetich

Ecological Studies of Wolves on Isle Royale

Annual Report 2003-2004

Endangered And Threatened Wildlife And Plants: Designation Of Critical Habitat For Topeka Shiner

Endangered Species Bulletin

We, the U.S. Fish and Wildlife Service, announce the reopening of a 30-day public comment period for the proposed rule to designate critical habitat for the Topeka shiner (Notropis topeka) pursuant to the Endangered Species Act of 1973, as amended (Act). The proposed rule to designate critical habitat in the States of Iowa, Kansas, Minnesota, Nebraska, and South Dakota was published on August 21, 2002 (67 FR 54261). We herein propose critical habitat segments for Missouri and one additional segment for South Dakota, and discuss potential exclusions from critical habitat designation under the authority of section 4(b)(2). We …

The Courier, Volume 37, Issue 18, March 12, 2004, The Courier, College Of Dupage

The Courier

Stories:

Election Results Are In

Student-Parent Gets Make Over

College Holds Open House For Architects

Master Plan To Move Softball Field

For Better Or For Worse (Gay Marriage)

Students Send Clear Message (Iraq War)

STIs Currently On The Rise

Swim Team Successful At National Competition–Women Take National, Men Finish 9th Overall At Meet

Klaas Coaches 1,000th Game

People:

Connie Canaday Howard

David John Simcik

Don Klaas

The Courier, Volume 37, Issue 17, March 5, 2004, The Courier, College Of Dupage

The Courier

Stories:

Improvement Project Under Way In BIC

Readership Program Successful So Far

Three Students Compete For Trustee Position

Parking Lot Study Points

Protecting Your Privacy

Drama And Trauma In Guantanamo

Answers To Identity, Mortality Sought (“Mere Mortals”)

Lady Chaps Head To Nationals (Basketball)

Swim Team Seeks Victory At National Competition

People:

Craig Blanchfield

Michael Pogwizd

Michael Mack

Mike Perkins

Andrew Carroll

The Big Thicket: Typical Or Atypical?, Michael H. Macroberts, Barbara R. Macroberts

East Texas Historical Journal

No abstract provided.

Spatial Heterogeneity Of Crenarchaeal Assemblages Within Mesophilic Soil Ecosystems As Revealed By Pcr-Single-Stranded Conformation Polymorphism Profiling, Marek K. Sliwinski

Faculty Work

Microbial ecologists have discovered novel rRNA genes (rDNA) in mesophilic soil habitats worldwide, including sequences that affiliate phylogenetically within the division Crenarchaeota (domain Archaea). To characterize the spatial distribution of crenarchaeal assemblages in mesophilic soil habitats, we profiled amplified crenarchaeal 16S rDNA sequences from diverse soil ecosystems by using PCR-single-stranded-conformation polymorphism (PCR-SSCP) analysis. PCR-SSCP profiles provide a measure of relative microbial diversity in terms of richness (number of different phylotypes as estimated from the number of unique PCR-SSCP peaks) and evenness (abundance of each phylotype as estimated from the relative area under a peak). Crenarchaeal assemblages inhabiting prairie, forest, …

The Courier, Volume 37, Issue 15, February 20, 2004, The Courier, College Of Dupage

The Courier

Stories:

Tuition Raised $4

Student Pleads ‘Not Guilty’

College Works Towards Semesters

College Mourns Librarian’s Death

Eating Disorder Awareness

CCFR Surprised With Check (Chicago Council On Foreign Relations)

The Quest To Learn African American History

People:

Jim Belz

Eric Saperston

Aaron Freeman

Ara and Atunda Band

Peter Lipari

Harold Bauer

Stephen Lapthisophon

Matt Teichler

Contribution To The Morphology And Descriptive Biology Of Caurinella Idahoensis (Ephemeroptera: Ephemerellidae), Luke M. Jacobus, W. P. Mccafferty

Western North American Naturalist

Reared specimens from Bridge Creek, Idaho County, Idaho, provide the bases for the first descriptions of Caurinella idahoensis egg and alate stages and redescription of the larval stage. Larvae are distinguished from other Nearctic Ephemerellinae species by the distinctive posterolateral projections on abdominal segment 9. Male adults have a unique combination of characters associated with their genitalia. Larvae were associated with the colonial bluegreen alga Nostoc parmelioides in a clear, cold headwater stream. Several other Diptera, Ephemeroptera, Plecoptera, and Trichoptera also were found in cohabitation with C. idahoensis. Amorphous detritus appears to be a major component of the diet …

Habitat Of Three Rare Species Of Small Mammals In Juniper Woodlands Of Southwestern Wyoming, Kevin M. Rompola, Stanley H. Anderson

Western North American Naturalist

Southwestern Wyoming constitutes the northern limit of the ranges of the cliff chipmunk (Tamias dorsalis), pinyon mouse (Peromyscus truei), and canyon mouse (P. crinitus). In addition to trying to determine their presence in the region, we wanted to identify habitat characteristics commonly used by each of these species. We used Sherman live-traps to sample 14 sites representing 2 distinct habitat types in 1998 and 1999: juniper-rocky slopes and juniper cliffs. Seventeen habitat characteristics were measured at capture locations for each species and compared with randomly located points. Best subsets multiple logistic regression was used …

Growth In Sonoran Desert Populations Of The Common Chuckwalla (Sauromalus Obesus), Brian K. Sullivan, Matthew A. Kwiatkowski, Paul S. Hamilton

Western North American Naturalist

No abstract provided.

Wildlife Conservation Sunflower Plots As A Dual-Purpose Wildlife Management Strategy, George M. Linz, Dionn A. Schaaf, Philip Mastrangelo, H. Jeffrey Homan, Linda B. Penry, William J. Bleier

United States Department of Agriculture Wildlife Services: Staff Publications

The National Sunflower Association has identified blackbird damage as a key reason for growers to abandon sunflower. In the 1980s, National Wildlife Research Center scientists showed that "decoy" p1antings of sunflower can significantly reduce bird damage to nearby commercial sunflower fields. For a variety of reasons, largely logistical and economic in nature, decoy sunflower fields did not become wide-spread. Over the last decade, new federal farm programs have placed more emphasis on wildlife conservation. Thus, decoy sunflower fields planted to ameliorate blackbird damage and establish habitat for wildlife might gamer broad support from both agricultural and conservation groups. We present …

Spectator 2004-02-05, Editors Of The Spectator

The Spectator

No abstract provided.

Pesticides, Human Health, And The Food Quality Protection Act, Kristina Thayer, Jane Houlihan

William & Mary Environmental Law and Policy Review

No abstract provided.