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Erratum

Western North American Naturalist

No abstract provided.

Front Matter, Vol. 70 No. 3

Western North American Naturalist

No abstract provided.

A Maximum Pseudo-Likelihood Approach For Estimating Species Trees Under The Coalescent Model, Liang Liu, Lili Yu, Scott V. Edwards

Biostatistics: Faculty Publications

Background

Several phylogenetic approaches have been developed to estimate species trees from collections of gene trees. However, maximum likelihood approaches for estimating species trees under the coalescent model are limited. Although the likelihood of a species tree under the multispecies coalescent model has already been derived by Rannala and Yang, it can be shown that the maximum likelihood estimate (MLE) of the species tree (topology, branch lengths, and population sizes) from gene trees under this formula does not exist. In this paper, we develop a pseudo-likelihood function of the species tree to obtain maximum pseudo-likelihood estimates (MPE) of species trees, …

Nesting Ecology Of Yellow Warblers (Dendroica Petechia) In Montane Chaparral Habitat In The Northern Sierra Nevada, Diana L. Humple, Ryan D. Burnett

Western North American Naturalist

The Yellow Warbler (Dendroica petechia) is considered a riparian specialist in much of western North America, but in California it also breeds in a second habitat type: montane chaparral of the Sierra Nevada and southern Cascades. We monitored Yellow Warbler nests in montane chaparral and assessed their poorly known nesting ecology in this habitat. We also conducted point counts in upland habitat throughout the region. We determined habitat associations for Yellow Warblers based on nest site and point-count vegetation data; nests were predominantly in bush chinquapin (Chrysolepis sempervirens) and greenleaf manzanita (Arctostaphylos patula), and …

Comparison Of Distribution And Habitat Characteristics Between An Endemic And A Wide-Ranging Cryptic Species Of Peromyscus On The Baja California Peninsula, Sergio Ticul Álvarez-Castañeda, Patricia Cortés-Calva, Francisco X. González-Cózatl, Delia Rojas, Ignacio Leyva

Western North American Naturalist

Peromyscus eva and Peromyscus fraterculus are 2 morphologically similar species of the Peromyscus eremicus group occurring on the Baja California Peninsula. Due to the similarity between these 2 species, their ranges have been greatly confused; consequently, the specific habitat characteristics for each group are not well known. The goal of this study was to assess distribution ranges and characteristics of preferred habitats for P. eva and P. fraterculus in more detail. We identified taxonomy of individuals by evaluating genetic patterns produced by restriction fragment length polymorphisms (RFLPs). We evaluated the banding pattern generated by Alu I and Bam HI restriction …

Losing Control, Seeking Connections, Kenneth P. Serbin

At Risk for Huntington's Disease

No abstract provided.

Redescription Of The Tyee Sucker, Catostomus Tsiltcoosensis (Catostomidae), Jes Kettratad, Douglas F. Markle

Western North American Naturalist

We resurrect Catostomus tsiltcoosensis, the Tyee sucker of Oregon coastal rivers, from the synonymy of Catostomus macrocheilus and compare it with its congeners. Catostomus tsiltcoosensis is superficially similar to disjunctly distributed Catostomus occidentalis of the Sacramento drainage and Catostomus ardens of the Upper Snake River and Bonneville Basin. However, the gill raker structure, wide frontoparietal fontanelle, location of the ninth cranial foramen, scale radii patterns, and cytochrome b sequences clearly align C. tsiltcoosensis with C. macrocheilus rather than C. occidentalis. Differences in counts of infraorbital pores and dorsal fin rays, in body depth proportions, and in cytochrome b sequences distinguish …

Impacts Of Nonnative Plant Species On Production And Diversity In The Front Range Of Colorado, Kerry M. Byrne, William K. Lauenroth, Lindsay Mcmanus

Western North American Naturalist

Nonnative plant species are considered one of the greatest threats to biodiversity, yet we still are unable to predict how production and diversity of a community will change once a species has invaded. Ponderosa pine woodlands in the Front Range of Colorado are ideal for studying the impacts of nonnative plants on production and species richness. We selected 5 sites along the northern Front Range with varying proportions of nonnative and native species and compared understory production and species richness along the gradient of nonnative species dominance. Total species production was positively and significantly related to total species richness, and …

Effects Of Long-Term Livestock Grazing And Habitat On Understory Vegetation, Jonathan D. Bakker, Faith Rudebusch, Margaret M. Moore

Western North American Naturalist

The herbaceous understory stratum contains most of the plant diversity in ponderosa pine (Pinus ponderosa P. & C. Lawson var. scopulorum Engelm.) forests of the American Southwest and provides critical food and habitat for many wildlife species. During the last century, this stratum has been affected by livestock grazing and by increased dominance of overstory trees. We sampled a unique grazing exclosure to examine the relative importance of long-term livestock grazing (grazed or ungrazed) and habitat (park or tree) on the understory community. We sampled 3 plots of 192 contiguous quadrats (each quadrat 0.5 m²) in each …

Deer Mouse (Peromyscus Maniculatus) Home-Range Size And Fidelity In Sage-Steppe Habitat, Britta A. Wood, Lin Cao, M. Denise Dearing

Western North American Naturalist

Within a species, home-range size can vary due to factors such as sex, mass, age, and breeding condition of individuals as well as habitat type, food availability, population density, and season. The objectives of this study were to estimate home ranges of deer mice (Peromyscus maniculatus) in sage-steppe habitat and to test the hypothesis that several factors (sex, mass, reproductive status, and seasonality) affect home-range size. We also tested the hypothesis that deer mice exhibit home-range fidelity over time. Passive integrated transponder (PIT) technology was used to estimate home ranges in June and September 2006. Home-range estimates varied …

Brood Parasitism And Nest Survival Of Brown-Headed Cowbird Hosts At High-Elevation Riparian Sites In The Eastern Sierra Nevada, California, Sacha K. Heath, Leah A. Culp, Christine A. Howell

Western North American Naturalist

Deciduous riparian ecosystems in the western United States provide habitat for a higher density of breeding birds than reported for any other avian habitat type and provide habitat for more breeding bird species than adjacent uplands. On the east slope of the Sierra Nevada, riparian ecosystems make up <1% of United States Forest Service lands yet experience a disproportionate amount of recreational use and development. Two of these developments, pack-station corrals and campgrounds, provide foraging opportunities for the Brown-headed Cowbird (Molothrus ater)—an obligate brood parasite that forages on bare ground and feedlots but typically commutes to distinct shrubland or woodland habitats for breeding. We examined nest survival, brood parasitism, breeding phenology, and causes of nest failure for birds at North Lake and Rock Creek: 2 high-elevation (>2500 m) riparian breeding …

Reproductive Biology, Hybridization, And Flower Visitors Of Rare Sclerocactus Taxa In Utah's Uintah Basin, Vincent J. Tepedino, Terry L. Griswold, William R. Bowlin

Western North American Naturalist

We studied the mating system and flower visitors of 2 threatened species of Sclerocactus (Cactaceae) in the Uintah Basin of eastern Utah—an area undergoing rapid energy development. We found that both S. wetlandicus and S. brevispinus are predominantly outcrossed and are essentially self-incompatible. A third presumptive taxon (undescribed; here called S. wetlandicus-var1) is fully self-compatible but cannot produce seeds unless the flowers are visited by pollinators. We found tentative evidence for pollinator limitation of fruit set in S. brevispinus but not in the other taxa. Pollinators are largely species of native ground-nesting bees in the subfamily Halictinae. These bees …

Bottom-Up Factors Influencing Riparian Willow Recovery In Yellowstone National Park, Michael T. Tercek, Robert Stottlemyer, Roy Renkin

Western North American Naturalist

After the elimination of wolves (Canis lupis L.) in the 1920s, woody riparian plant communities on the northern range of Yellowstone National Park (YNP) declined an estimated 50%. After the reintroduction of wolves in 1995–1996, riparian willows (Salix spp.) on YNP's northern range showed significant growth for the first time since the 1920s. However, the pace of willow recovery has not been uniform. Some communities have exceeded 400 cm, while others are still at pre-1995 levels of <80 cm mean height. We took intensive, repeated measurements of abiotic factors, including soil and water-table characteristics, to determine whether these factors might be contributing to the varying pace of willow recovery. Willows at all of our study sites were "short" (<250 cm max. height) prior to 1995 and have recovered to varying degrees since. We contrasted "tall" (>250 cm max. height) willow sites where willows had escaped elk (Cervus elaphus L.) browsing with "short" willow sites that …

Hispid Cotton Rat (Sigmodon Hispidus) In Nebraska: Distribution, Reproduction, And Seasonal Activity, Greg D. Wright, Keith Geluso, Russell A. Benedict

Western North American Naturalist

The hispid cotton rat (Sigmodon hispidus) has occurred in Nebraska for about 50 years and entered the state from the south via northward movements through Kansas. However, little is known about its status or distribution in the state in recent decades. We conducted surveys for S. hispidus in southern Nebraska at historical sites and sites without previous records to determine its current status. From 2004 to 2008, we documented cotton rats at 9 of 12 historical sites in south-central and extreme southeastern parts of the state, and we captured this species at 13 new sites in southwestern and …

Clark's Nutcrackers Harvest Sugar Pine Seeds From Cones, Michael P. Murray, Diana F. Tomback

Western North American Naturalist

This is the first report of Clark's Nutcrackers (Nucifraga columbiana) harvesting seeds from the cones of sugar pine (Pinus lambertiana), based on observations over several years in Crater Lake National Park, Oregon. The harvesting period in late September corresponded to peak cone-opening dates. Nutcrackers placed harvested seeds in their throat pouches, a behavior associated with seed caching.

First Record Of A Range Extension Of The Cliff Chipmunk (Tamias Dorsalis) Into The Huachuca Mountains, Nichole L. Cudworth, John L. Koprowski

Western North American Naturalist

Chipmunks are widely distributed throughout the mountain ranges of Arizona. However, no living chipmunks are known from the Huachuca Mountains despite the availability of favorable habitat. Based upon pelage characteristics of captured individuals, we provide the first report of a breeding population of cliff chipmunks (Tamias dorsalis) in the Huachuca Mountains and discuss possible mechanisms of their arrival.

End Matter, Vol. 70 No. 3

Western North American Naturalist

No abstract provided.

Sleep And Delinquency: Does The Amount Of Sleep Matter?, Samantha S. Clinkinbeard, Peter Simi, Mary K. Evans, Amy L. Anderson

Criminology and Criminal Justice Faculty Publications

Sleep, a key indicator of health, has been linked to a variety of indicators of well-being such that people who get an adequate amount generally experience greater well-being. Further, a lack of sleep has been linked to a wide range of negative developmental outcomes, yet sleep has been largely overlooked among researchers interested in adolescent delinquency. The purpose of this study was to explore the relationship between hours of sleep and delinquent behavior among adolescents by using data from Wave 1 of the National Longitudinal Study of Adolescent Health (n = 14,382; 50.2% female, 63.5% white). A series of …

Early Psychosis Intervention And Its Implications For Mental Health Counselors, Advocates And Supervisors: Lessons And Outcomes From The East Program, Ryan P. Melton

Regional Research Institute for Human Services

This presentation focuses on early psychosis intervention, identification, prevention, and intervention.

Walking Box Ranch Planning And Design Quarterly Progress Report: Period Ending October 10, 2010, Margaret N. Rees

Walking Box Ranch

• UNLV Public Safety is assisting in identifying security methods needed to guarantee safety and security at the ranch after project completion. This effort will involve the assistance of Metro CPTED program officers as design proceeds.
• UNLV IT is determining the extent to which they can assist with networking and technology issues as project design moves forward. They may assist in identifying consultants to hire to assist with technology.
• We have solicited research/education proposals from UNLV faculty for projects to be initiated in the coming year. The goal is to provide seed funding for projects that will expand as the facilities …

Kon Swee Chen, Kon Swee Chen '69, Steve Burrichter '70

All oral histories

This recording was made during the reception for the Class of 1970's 40th anniversary year. In addition to relating how he came to IWU from Malaysia, alumnus Chen relates his thoughts about the importance of diversity as a goal for IWU.

Strategic Planning Meeting Northwest Houston Center, George C. Wright

President Emeritus George C. Wright Speeches

No abstract provided.

Transqueer Representations And How We Educate, Kay Siebler

English Faculty Publications

This article examines the representations of transqueers (specifically female to male transsexuals) in popular media and how these representations shape attitudes of transqueers both with those outside the LBGT community and those within the community. The article discusses how these cultural images of FTM transqueers imply that being accepted often means surgery and hormones in order to “pass” as male, and it challenges educators to work more overtly and diligently to educate toward critical consciousness regarding the sex/gender system and the rigidity of the binary that removes transgendered people as nonentities. The article offers an argument about how to approach …

The Cowl - V. 75 - N. 1 - Sept 9, 2010

The Cowl

The Cowl - student newspaper of Providence College. Volume 75 - Number 1 - September 9, 2010. 20 pages.

Volume 46 - Issue 05 - Friday, October 8, 2010, Rose Thorn Staff

The Rose Thorn Archive

The Rose Thorn, Rose-Hulman's independent student newspaper.

Traversing Swanton Road, 2nd Ed., James A. West

Academic, Government & Associated Organizational Research Resources

Situated at the northwest end of Santa Cruz County and occupying circa 30 square miles of sharply contrasted terrain, the Scott Creek Watershed concentrates within its geomorphological boundaries, at least 10-12% of California's flora, both native and introduced. Paradoxically, the use/abuse that the watershed has sustained over the past 140+ years, has not necessarily diminished the biodiversity and perhaps parallels the naturally disruptive but biologically energizing processes (fire, flooding, landslides and erosion), which have also been historically documented for the area for +60 years. This is an early edition of an extensive document by James A. West. Please visit the …

Empathic Development And Social Relationships, Lisa Marlowe Covington

Theses & Honors Papers

No abstract provided.

The Communicator, October 8, 2010, Bronx Community College

The Communicator

The Communicator newspaper published on October 8, 2010.

Ucc Minutes Oct 8, 2010, Undergraduate Curriculum Council

Undergraduate Currirculum Committee Minutes

No abstract provided.

The Utah Statesman, October 8, 2010, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.