Digital Commons Network^™

Biogeography And Physiological Adaptations Of The Brine Fly Genus Ephydra (Diptera: Ephydridae) In Saline Waters Of The Great Basin, David B. Herbst

Great Basin Naturalist

Four species of the genus Ephydra are commonly found in saline waters within the hydrologic Great Basin: E. hians, E. gracilis, E. packardi, and E. auripes. Though none of these brine flies is endemic (distributions also occur outside the Great Basin), they all inhabit distinctive habitat types and form the characteristic benthic insect fauna of inland saline-water habitats. The affinities of each species for different salinity levels and chemical compositions, and ephemeral to perennial habitats, appear to form the basis for biogeographic distribution patterns. Within any habitat, changing salinity conditions over time may impose physiological or ecological constraints …

Emergence Patterns Of Large Stoneflies (Plecoptera: Pteronarcys, Calineuria, Hesperoperla) In A Montana River, Andrew L. Sheldon

Great Basin Naturalist

Emergents of Pteronarcys californica, Calineuria californica, and Hesperoperla pacifica were captured with replicated emergence traps at 3 sites along the banks of Rock Creek, Montana. Pteronarcys emergence in early June was short (88% of individuals in 6 d) and attained rates of 5 m⁻¹ d⁻¹ (shoreline distance) and cumulative densities up to 19 m⁻¹ yr⁻¹. Calineuria emerged synchronously (89% in 9 d) 2 wk later at densities up to 7 m⁻¹ d⁻¹ and 40 m⁻¹ yr⁻¹. The less numerous Hesperoperla (5 individual m⁻¹ yr⁻¹) had a …

C[Harles] Lynn Hayward, Herbert H. Frost, Wilmer W. Tanner

Great Basin Naturalist

No abstract provided.

End Matter, Vol. 59 No. 2

Great Basin Naturalist

No abstract provided.

Front Matter, Vol. 59 No. 2

Great Basin Naturalist

No abstract provided.

A New Species And New Synonym In The Genus Psychoronia (Limnephilidae), With Significant Records For Caddisflies (Trichoptera) From Western North America, David E. Ruiter

Great Basin Naturalist

A new species of caddisfly, Psychoronia brooksi (Limnephilidae), is described from New Mexico, and Psychoronia brevipennis (Banks) 1904 is designated as a junior synonym of Psychoronia costalis Banks 1901. Additional distributional records and notes for 51 caddisfly species are also presented.

Helminths Of The Madrean Alligator Lizard, Elgaria Kingii (Sauria: Anguidae), From Arizona, Stephen R. Goldberg, Charles R. Bursey, Hay Cheam

Great Basin Naturalist

No abstract provided.

Crusader, April, 30, 1999, College Of The Holy Cross

Student Newspapers

The student newspaper for the College of the Holy Cross in Worcester, Massachusetts. Articles include coverage of campus events and issues, sports, editorials and special features.

Volume 36, Number 34: April 30, 1999, University Of North Dakota

University Letter Archive

No abstract provided.

The Murray Ledger And Times, April 30, 1999, The Murray Ledger And Times

The Murray Ledger & Times

No abstract provided.

The Murray State News, April 30, 1999, The Murray State News

Murray State University Collection

No abstract provided.

Reporter - April 30th 1999, Rit Reporter Staff

University Publications

No abstract provided.

Preadolescents With Attachment Disorders: An Explanatory Study In A Residential Treatment Center, Teresina J. Schellinger

Theses and Graduate Projects

An increasing number of children are failing to develop secure attachments to caregivers. Many are involved with the child welfare system and display an overwhelming number of problems--emotional, cognitive, developmental, physical, moral, behavioral, and social. This exploratory study using qualitative and quantitative methods addresses how one residential treatment center has worked with this population. Case records, selected through a purposive sampling, of 14 discharged preadolescents and information from key informants support findings of this research. Themes discovered assist this treatment center, and possibly others, in understanding the relationship between the behavioral and therapeutic needs of these children and the practice …

Volume Cxvi, Number 21, April 30, 1999, Lawrence University

The Lawrentian

No abstract provided.

Gender Bias And Women In Leadership, Rose Mary Judge

Theses and Dissertations

The purpose of this study is to describe and evaluate the effectiveness of implementing a stronger equity plan to career major areas whose students have experienced inequity in a vocational program that perpetuates gender bias and harassment of female students. This particular sample involves twenty-two students who are in non-traditional career major areas.

Interviews involved the Building Principal, the Affirmative Action Officer, a Guidance Counselor, and two Career Major teachers. Surveys were used to collect data from students in non-traditional career majors. Questionnaires were given to all academic teachers. Data analysis consisted of using the information from the interviews, surveys, …

Helminths Of The Lowland Burrowing Treefrog, Ptyernohyla Fodiens (Hylidae), From Southern Arizona, Stephen R. Goldberg, Charles R. Bursey, Guillermo Galindo

Great Basin Naturalist

No abstract provided.

The Ucf Report, Vol. 21 No. 20, April 30, 1999, University Of Central Florida

The UCF Report

Expect a raise - BOR will say how much: The budget approved by the Legislature must be signed off by Gov. Jeb Bush, but it looks good for UCF; Married to the job: UCF couples are bringing new meaning to term 'working together'; 3,400 set to receive diplomas this spring.

Effect Of Salinity On Seed Germination Of Triglochin Maritima Under Various Temperature Regimes, M. Ajmal Khan, Irwin A. Ungar

Great Basin Naturalist

Triglochin maritima L. (arrow grass), an herbaceous perennial in the family Juncaginaceae, is widely distributed in inland and coastal salt marshes of North America. Triglochin maritima seeds from a population growing in a salt marsh at Faust, Utah, were germinated at 4 temperature regimes (12-h night/12-h day, 5–15°C, 5–25°C, 10–20°C, and 15–25°C) and 5 salinities (0, 100, 200, 300, 400, and 500 mol m⁻³ NaCl) to determine optimal conditions for germination and level of salt tolerance. Ungerminated seeds were returned to distilled water after 20 d to determine whether seeds could recover from salinity treatments. Maximum germination occurred in …

Full Issue, Vol. 59 No. 2

Great Basin Naturalist

No abstract provided.

Reproductive Ecology Of Bison On Antelope Island, Utah, Michael L. Wolfe, Milan P. Shipka, John F. Kimball

Great Basin Naturalist

Autumn musters of bison (Bison bison) on Antelope Island State Park, Utah, conducted annually since 1987, provided data on temporal and age-specific reproductive patterns and a basis to evaluate the efficacy of management measures implemented to elevate reproductive performance in the herd. Pregnancy rates were variable and low (x̄ = 46.2%) in comparison to other free-ranging, noncommercial bison herds in North America. Cows in the 3- and >6-yr age classes exhibited lower-than-expected pregnancy rates (P < 0.05). Annual pregnancy rates showed a significant (r = 0.64, P = 0.047) linear decline of 2.5% per annum. Variance in distribution of fetal ages observed in 6 …

Stream Temperatures And The Elevational Distribution Of Redband Trout In Southwestern Idaho, Bruce W. Zoellick

Great Basin Naturalist

During July to September 1994–1996, I examined water temperatures at the lower end of the elevational distribution of redband trout (Oncorhynchus mykiss gairdneri) in 4 streams in the Owyhee Mountains in southwestern Idaho. Maximum water temperatures in Castle, Shoofly, Little Jacks, and Big Jacks creeks during low flows during a drought in 1994 ranged from 26.7°C to 29.0°C. Water temperatures fluctuated 9.5–11°C during the 24-h period maximum temperatures were observed. Stream flows at the lower end of Big Jacks and Little Jacks creeks in 1994 were <0.003 m³ s⁻¹ and subsided underground 50–130 m downstream of pools inhabited …

Assortative Mating In Soldier Beetles (Cantharidae, Chauliognathus): Test Of The Mate-Choice Hypothesis, Ruth Bernstein, Stephen Bernstein

Great Basin Naturalist

Soldier beetles of 2 species, Chauliognathus basalis and C. deceptus, were examined to test the Crespi hypothesis that positive assortative mating by size is caused by mate choice. Specifically, we tested the prediction that if mate choice involves choosing the largest mate available, then mating individuals will be larger than nonmating individuals. Four samples were taken, at different times during the mating season, from each of 2 sites. Each sample consisted of mating pairs, nonmating males, and nonmating females. Some of the samples contained beetles of both species; others contained beetles of a single species. For each gender elytron …

Competition And Niche Partitioning Among Pseudoroegneria Spicata, Hedysarum Boreale, And Centaurea Maculosa, James S. Jacobs, Roger L. Sheley

Great Basin Naturalist

Maximizing desired plant diversity has been suggested as a means of minimizing non-indigenous plant invasion on rangeland by maximizing niche occupation. Competition between 2 desired indigenous species, Pseudoroegneria spicata (Pursh.) Löve (bluebunch wheatgrass) and Hedysarum boreale Nutt. var. boreale (northern sweetvetch), and a non-indigenous invader, Centaurea maculosa Lam. (spotted knapweed), was quantified using growth of isolated individuals and 2 three-species addition series experiments. Seeding densities of P. spicata remained constant at 0, 200, 400, and 800 seeds m⁻² in both experiments. H. boreale and C. maculosa seeding densities were 0, 200, 400, and 800 seeds m⁻², respectively, …

An Irvingtonian Species Of Brachylagus (Mammalia: Lagomorpha) From Porcupine Cave, Park County, Colorado, Colleen N. Ramos

Great Basin Naturalist

Brachylagus is currently a monotypic genus of uncertain origins and known only from Holocene and late Rancholabrean. A new species of leporid is described from the early and middle Pleistocene (Irvingtonian) deposits of Porcupine Cave, Park County, Colorado. Stratified deposits of the Pit and the Velvet Room, 2 localities within Porcupine Cave, have been dated biochronologically and paleomagnetically from the middle Irvingtonian and early to middle Irvingtonian, respectively. Brachylagus coloradoensis sp. nov., is characterized by its conserved p3 enamel patterns which are intermediate between B. idahoensis and Hypolagus, and its size which is slightly larger than that of B. idahoensis …

Coupling Between Bacterioplankton Species Composition, Population Dynamics, And Organic Matter Degradation, Jarone Pinhassi, Farooq Azam, Johanna Hemphälä, Richard A. Long, Josefina Martinez, Ulla Li Zweifel, Åke Hagström

Faculty Publications

To study the effect of substrate addition on short term bacterial population dynamics and species composition in seawater mesocosms were maintained with water collected off Scripps Pier (La Jolla, California USA) Protein enrichment (BSA) triggered a dynamic response from the microbial food web, whereas enrichment with starch had no effect. In the protein enriched mesocosm the number of both nucleoid-containing cells and metabolically active cells increased by 3.0 X 10⁵ cells ml^-1 from Day 1 to Day 4 In the same time period the density of a set of 31 phylogenetically different bacteria (α- and g-Proteobactena as well …

Daily Eastern News: April 30, 1999, Eastern Illinois University

April

No abstract provided.

Biogeography Of The Short-Tailed Shrews (Blarina Brevicauda And B. Carolinensis) In The Tennessee River Valley And Adjacent Areas Of The Midsouth, Michael Jeffries

Honors Theses

In response to conflicting reports of the distribution of the two species of Blarina (B. brevicauda and B. carolinensis) in the Tennessee Valley area, specimens from The Natural History Museum of The University of Tennessee at Chattanooga and The University of Georgia were analyzed. Cranial measurements were used in both a discriminant function analysis and a principle components analysis to determine species assignments. Blarina brevicauda was found in central Tennessee, the highlands of the Cumberland Plateau, and the mountains of far east Tennessee, whereas B. carolinensis was found in the Ridge and Valley of southeast Tennessee, separated from B. brevicauda …

The Parthenon, April 30, 1999, Marshall University

The Parthenon

No abstract provided.

Mentor Relationships In Clinical Psychology Doctoral Training: Experiences Of Midlife Female Students, Kelley Dickson Carmichael

Doctor of Psychology (PsyD)

The literature is clear that mentoring can be an important element in the professional development of clinical psychology trainees. In this qualitative study of female graduate students between the ages of 40 and 55, it was discovered !hat mentoring was a rare occurrence. Eleven advanced psychology students and graduates offered perspectives on graduate training through the lens of their life experiences. This study informs us that although women in midlife value education and enjoy relationships, they are unlikely to engage with faculty in traditional mentor relationships. Many women noted that faculty did not appear available or invested in mentoring. This …

The Bg News April 30, 1999, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. April 30, 1999. Volume 82-Issue 146.