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2008

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Observations Of Shoaling And Feeding Behavior Of June Sucker, Chasmistes Liorus, In A Refuge Population, Eric J. Billman Sep 2008

Observations Of Shoaling And Feeding Behavior Of June Sucker, Chasmistes Liorus, In A Refuge Population, Eric J. Billman

Western North American Naturalist

Observations of shoaling and feeding behavior of the zooplanktivorous June sucker, Chasmistes liorus, were made during summer 2003 in Red Butte Reservoir, Utah. Water clarity limited observations to 0.5–1.5 m below the water surface. Schools of adult suckers, ranging from a few to >200 fish, were observed on 20 days from May to September. I classified them as schools rather than shoals because the groups moved synchronously rather than appearing simply as an aggregation of fish. These schools were near the water surface, generally in areas of the reservoir with a water depth of >3 m, and presumably fed …

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The Colby Echo (2008-09-24), Colby College Sep 2008

The Colby Echo (2008-09-24), Colby College

The Colby Echo

Published by the students of Colby College since 1877, The Colby Echo is the weekly, editorially independent student-run newspaper of Colby College in Waterville, Maine. Published monthly, 1877-1886; semi-monthly, 1886-1897; and weekly, during the academic year, 1898-present.

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Consequences Of Cattle Introduction In A Shrubsteppe Ecosystem: Indirect Effects On Desert Horned Lizards (Phrynosoma Platyrhinos), T.A. Scott Newbold, James A. Macmahon Sep 2008

Consequences Of Cattle Introduction In A Shrubsteppe Ecosystem: Indirect Effects On Desert Horned Lizards (Phrynosoma Platyrhinos), T.A. Scott Newbold, James A. Macmahon

Western North American Naturalist

Livestock grazing is one of the most common forms of land use in the western United States, yet scientists struggle to accurately predict grazing impacts. This study examined the initial response of desert horned lizards (Phrynosoma platyrhinos) to cattle introduction at a site in northwestern Utah. We sampled 21 grazed and 7 ungrazed study plots before grazing (2001), after grazing (2002), and 1 year after the cessation of grazing (2003). We were specifically interested in whether grazing influenced lizards through biotic or abiotic pathways. Lizard response (based on scat counts) to the initial impact of grazing (<6 months after cattle introduction) suggests that lizards abandoned areas protected from grazing (i.e., ungrazed exclosures) presumably in favor of grazed areas. Avoidance of ungrazed plots by lizards coincided with a decline in shrub and grass cover on grazed plots and with no significant change in relative abundance or richness of prey (ants) on grazed plots. In 2003, one year after cattle had been removed from the site, prey species richness declined on ungrazed plots, and percent bare ground increased on previously grazed plots; however, we detected no response of lizards to these changes. Overall, these results add to a growing consensus that responses by small vertebrates to grazing are largely the result of changes to habitat structure (i.e., vegetation cover), rather than to changes in prey availability. Importantly, results from our relatively unique evaluation of initial …

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End Matter, Vol. 68 No. 3 Sep 2008

End Matter, Vol. 68 No. 3

Western North American Naturalist

No abstract provided.

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Evolution Of The Holozoan Ribosome Biogenesis Regulon, Seth J. Brown, Michael D. Cole, Albert J. Erives Sep 2008

Evolution Of The Holozoan Ribosome Biogenesis Regulon, Seth J. Brown, Michael D. Cole, Albert J. Erives

Dartmouth Scholarship

The ribosome biogenesis (RiBi) genes encode a highly-conserved eukaryotic set of nucleolar proteins involved in rRNA transcription, assembly, processing, and export from the nucleus. While the mode of regulation of this suite of genes has been studied in the yeast, Saccharomyces cerevisiae, how this gene set is coordinately regulated in the larger and more complex metazoan genomes is not understood. Here we present genome-wide analyses indicating that a distinct mode of RiBi regulation co-evolved with the E(CG)-binding, Myc:Max bHLH heterodimer complex in a stem-holozoan, the ancestor of both Metazoa and Choanoflagellata, the protozoan group most closely related to animals. These …

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Low Specific Conductivity Limits Growth And Survival Of The New Zealand Mud Snail From The Upper Owens River, California, David B. Herbst, Michael T. Bogan, Robert A. Lusardi Sep 2008

Low Specific Conductivity Limits Growth And Survival Of The New Zealand Mud Snail From The Upper Owens River, California, David B. Herbst, Michael T. Bogan, Robert A. Lusardi

Western North American Naturalist

The New Zealand mud snail (NZMS), Potamopyrgus antipodarum (Gray), is an invasive species of aquatic snail that is becoming widespread in inland and coastal waters of the western United States. The New Zealand mud snail can have significant impacts on stream ecosystems, as they may consume a large fraction of available algae production and compete with and displace native invertebrates. Even though the distribution of this species is expanding, the habitat conditions conducive to invasion are incompletely understood. Surveys following the NZMS invasion in the Upper Owens River, California, indicated that the snail may be excluded from waters where dissolved …

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Polygynous Mating Behavior In The Endangered Tehuantepec Jackrabbit (Lepus Flavigularis), Tamara Rioja, Consuelo Lorenzo, Eduardo Naranjo, Laura Scott, Arturo Carrillo-Reyes Sep 2008

Polygynous Mating Behavior In The Endangered Tehuantepec Jackrabbit (Lepus Flavigularis), Tamara Rioja, Consuelo Lorenzo, Eduardo Naranjo, Laura Scott, Arturo Carrillo-Reyes

Western North American Naturalist

This is the 1st effort to determine the mating behavior of the Tehuantepec jackrabbit (Lepus flavigularis), an endangered endemic species from southern Mexico whose distribution is limited to the Isthmus of Tehuantepec region. Between June 2006 and December 2007, observations of 60 adult radio-marked jackrabbits were carried out in Santa María del Mar, Oaxaca, Mexico. Direct observations showed that the breeding season of the Tehuantepec jackrabbit lasted an average of 200 days per year, with a high-intensity period during the rainy season (May–October); we also confirmed a polygamous reproductive behavior for this species. More importantly, we showed that …

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Use Of A Mine By Eastern Pipistrelles (Perimyotis Subflavus) In East Central Nebraska, Jason P. Damm, Keith Geluso Sep 2008

Use Of A Mine By Eastern Pipistrelles (Perimyotis Subflavus) In East Central Nebraska, Jason P. Damm, Keith Geluso

Western North American Naturalist

The eastern pipistrelle (Perimyotis subflavus) is relatively common and widespread throughout the eastern United States. In recent decades, the distribution of P. subflavus has expanded westward across the Great Plains, and little information exists on its natural history in this region. In east central Nebraska, we monitored the use of a mine by eastern pipistrelles for >1 year. A few males occupied the roost in summer, but during the period of hibernation (late September–early May), the mine was used by at least 30 individuals composed of both sexes. Most individuals first entered the mine during late September through …

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Efficiency Of Various Methods Used To Detect Presence Of Pygmy Rabbits In Summer, Eveline S. Larrucea, Peter F. Brussard Sep 2008

Efficiency Of Various Methods Used To Detect Presence Of Pygmy Rabbits In Summer, Eveline S. Larrucea, Peter F. Brussard

Western North American Naturalist

We compared pellet, burrow, visual, and camera surveys to identify a method with high efficiency for detecting current pygmy rabbit (Brachylagus idahoensis) presence at a site in summer. We used 20 known occupied sites in 4 regions of northern Nevada and eastern California for the comparison. All leporid species that occurred in the region were distinguishable in photographs, and camera surveys had a 95% detection efficiency for pygmy rabbits. Burrows were detected at 85% of total sites; however, burrows that appeared active were found at only 55% of total sites. Pygmy rabbit pellets were found at all sites, …

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Effects Of A Spring Prescribed Burn On The Soil Seed Bank In Sagebrush Steppe Exhibiting Pinyon-Juniper Expansion, Elizabeth A. Allen, Jeanne C. Chambers, Robert S. Nowak Sep 2008

Effects Of A Spring Prescribed Burn On The Soil Seed Bank In Sagebrush Steppe Exhibiting Pinyon-Juniper Expansion, Elizabeth A. Allen, Jeanne C. Chambers, Robert S. Nowak

Western North American Naturalist

Pinyon-juniper (Pinus monophylla–Juniperus osteosperma) woodlands are expanding into shrubsteppe ecosystems in western portions of the Great Basin. Often, highly competitive trees displace the understory, and prescribed fire is increasingly used as a restoration tool. To inform management decisions about post-fire recovery, we examined immediate and long-term (i.e., 2 growing seasons) responses of the germinable seed bank to a spring prescribed fire. One week before and 1 week after a May 2002 prescribed burn, soil samples were taken under P. monophylla trees, under Artemisia tridentata ssp. vaseyana shrubs, and from interspace microsites. Two growing seasons after the prescribed burn, …

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Front Matter, Vol. 68 No. 3 Sep 2008

Front Matter, Vol. 68 No. 3

Western North American Naturalist

No abstract provided.

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Influence Of Beaver Dam Density On Riparian Areas And Riparian Birds In Shrubsteppe Of Wyoming, Hilary A. Cooke, Steve Zack Sep 2008

Influence Of Beaver Dam Density On Riparian Areas And Riparian Birds In Shrubsteppe Of Wyoming, Hilary A. Cooke, Steve Zack

Western North American Naturalist

Through dam-building activity, beavers (Castor canadensis) play an important role in creating pond and wetland habitat for bird communities. Their impact may be intensified in semiarid landscapes and may increase with increasing dam density on a stream. Our objective was to examine relationships between dam density, riparian area characteristics, and the riparian bird community in a semiarid landscape. In 2002 and 2003 we surveyed riparian birds, riparian area characteristics, and the number of dams along 1.2-km sections of 11 streams in sagebrush steppe regions of Wyoming. We categorized the riparian bird community into 2 assemblages based on their …

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Do Yellow-Pine Chipmunks Prefer To Recover Their Own Caches?, Stephen B. Vander Wall, Cynthia J. Downs, Mark S. Enders, Ben A. Waitman Sep 2008

Do Yellow-Pine Chipmunks Prefer To Recover Their Own Caches?, Stephen B. Vander Wall, Cynthia J. Downs, Mark S. Enders, Ben A. Waitman

Western North American Naturalist

Many rodent species scatter hoard seeds within a home range shared with other seed-caching animals. An animal foraging for cached food is likely to encounter the caches of other animals, as well as its own. This study asks the following question: do animals recover primarily their own caches, do they conserve their own caches and search for the caches of other animals, or do they search indiscriminately for cached seeds regardless of who buried them? We tested these ideas using 8 yellow-pine chipmunks inside rodent-proof enclosures. We allowed each subject to cache radioactive seeds, we located the seed caches, and …

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Influence Of Pocket Gopher Mounds On Nonnative Plant Establishment In A Shrubsteppe Ecosystem, G. Page Kyle, Andrew Kulmatiski, Karen H. Beard Sep 2008

Influence Of Pocket Gopher Mounds On Nonnative Plant Establishment In A Shrubsteppe Ecosystem, G. Page Kyle, Andrew Kulmatiski, Karen H. Beard

Western North American Naturalist

Soil disturbances across a wide range of spatial scales have been found to promote the establishment of invasive plant species. This study addresses whether mounds built by northern pocket gophers (Thomomys talpoides) in the shrubsteppe environment of north central Washington are facilitating plant invasions into native-dominated fields. Research was conducted in native-dominated plant communities adjacent to ex-arable, nonnative-dominated fields. To determine the effect of mounds on plant growth, we recorded new establishment and persistence of all plant species over 2 growing seasons on 10–19 mound and intermound areas in 10 fields. Nonnative plant establishment was not affected by …

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Seed Germination Of The Invasive Plant Brassica Tournefortii (Sahara Mustard) In The Mojave Desert, Dianne N. Bangle, Lawrence R. Walker, Elizabeth Ann Powell Sep 2008

Seed Germination Of The Invasive Plant Brassica Tournefortii (Sahara Mustard) In The Mojave Desert, Dianne N. Bangle, Lawrence R. Walker, Elizabeth Ann Powell

Western North American Naturalist

In the southwestern United States, Brassica tournefortii (Gouan) is a highly invasive plant that threatens native annuals. We conducted 5 experiments to help define the environmental limits for B. tournefortii germination. We found that this species germinates at a wide range of temperatures (16°C to 32°C), under moderate salt concentrations (up to 3.20 dS · m−1), in 24 hours of light or darkness, and after 10 weeks of submergence in water. These germination characteristics make B. tournefortii a potentially vigorous competitor of native annuals in the Mojave Desert. The fact that B. tournefortii can take advantage of and …

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Pioneering Conservation In Alaska By Ken Ross, Clayton M. White Sep 2008

Pioneering Conservation In Alaska By Ken Ross, Clayton M. White

Western North American Naturalist

No abstract provided.

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Spartan Daily, September 23, 2008, San Jose State University, School Of Journalism And Mass Communications Sep 2008

Spartan Daily, September 23, 2008, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily (School of Journalism and Mass Communications)

Volume 131, Issue 14

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Campus Assembly Minutes 09/23/2008, Campus Assembly Sep 2008

Campus Assembly Minutes 09/23/2008, Campus Assembly

Campus Assembly

No abstract provided.

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The Hilltop 9-23-2008, Hilltop Staff Sep 2008

The Hilltop 9-23-2008, Hilltop Staff

The Hilltop: 2000 - 2010

No abstract provided.

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Structural Studies Of West Nile Virus In Complex With Neutralizing Antibodies., Richard J. Kuhn, Bärbel Kaufmann, Shee Mei Lok, Mick Cherrier, Rushika Perera, Dagmar Sedlak, Grant E. Nybakken, Paul R. Chipman, Wei Zhang, Michael S. Diamond, Daved H. Fremont, Michael G. Rossmann Sep 2008

Structural Studies Of West Nile Virus In Complex With Neutralizing Antibodies., Richard J. Kuhn, Bärbel Kaufmann, Shee Mei Lok, Mick Cherrier, Rushika Perera, Dagmar Sedlak, Grant E. Nybakken, Paul R. Chipman, Wei Zhang, Michael S. Diamond, Daved H. Fremont, Michael G. Rossmann

Department of Biological Sciences Faculty Publications

West Nile virus (WNV) is a positive strand RNA virus in the family Flaviviridae, which includes members such as dengue, Japanese encephalitis, tick-borne encephalitis, yellow fever and Hepatitis C. As with other members of the genus, it is arthropod transmitted and has recently established itself as an endemic virus in the United States. Although most infections are asymptomatic, clinical manifestations of WNV include encephalitis and death. We have been interested in investigating the nature of the immune response with particular emphasis on the role of antibodies in reducing the level of infection. We have used a combination of techniques, but …

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The Very-Long-Chain Hydroxy Fatty Acyl-Coa Dehydratase Pasticcino2 Is Essential And Limiting For Plant Development, Liên Bach, Louise V. Michaelson, Richard Haslam, Yannick Bellec, Lionel Gissot, Jessica Marion, Marco Da Costa, Jean-Pierre Boutin, Martine Miquel, Frédérique Tellier, Frederic Domergue, Jennifer E. Markham, Frederic Beaudoin, Johnathan A. Napier, Jean-Denis Faure Sep 2008

The Very-Long-Chain Hydroxy Fatty Acyl-Coa Dehydratase Pasticcino2 Is Essential And Limiting For Plant Development, Liên Bach, Louise V. Michaelson, Richard Haslam, Yannick Bellec, Lionel Gissot, Jessica Marion, Marco Da Costa, Jean-Pierre Boutin, Martine Miquel, Frédérique Tellier, Frederic Domergue, Jennifer E. Markham, Frederic Beaudoin, Johnathan A. Napier, Jean-Denis Faure

Department of Biochemistry: Faculty Publications

Very-long-chain fatty acids (VLCFAs) are synthesized as acyl-CoAs by the endoplasmic reticulum-localized elongase multiprotein complex. Two Arabidopsis genes are putative homologues of the recently identified yeast 3-hydroxy-acyl-CoA dehydratase (PHS1), the third enzyme of the elongase complex. We showed that Arabidopsis PASTICCINO2 (PAS2) was able to restore phs1 cytokinesis defects and sphingolipid long chain base overaccumulation. Conversely, the expression of PHS1 was able to complement the developmental defects and the accumulation of long chain bases of the pas2–1 mutant. The pas2–1 mutant was characterized by a general reduction of VLCFA pools in seed storage triacylglycerols, cuticular waxes, …

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Executive Committee - Meeting Minutes, 9/23/2008, Academic Senate Sep 2008

Executive Committee - Meeting Minutes, 9/23/2008, Academic Senate

Academic Senate Minutes

No abstract provided.

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Executive Committee - Agenda, 9/23/2008, Academic Senate Sep 2008

Executive Committee - Agenda, 9/23/2008, Academic Senate

Academic Senate Agendas

No abstract provided.

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The Class Of ’65: Boomers At Sixty Recall Turning Points That Shaped Their Lives A Narrative Approach, Mary C. Poole Sep 2008

The Class Of ’65: Boomers At Sixty Recall Turning Points That Shaped Their Lives A Narrative Approach, Mary C. Poole

USF Tampa Graduate Theses and Dissertations

This dissertation explores the lives of baby boomers turning sixty as they use narrative to review their past by focusing on turning points. They reflect upon their present, and anticipate their future. The story begins at the St. Pius X High School Class of 1965's fortieth reunion, and proceeds to a class sixtieth birthday celebration and focus group. In addition, five members of the class record their life stories retrospectively. This research explores issues of identity, both personal and generational; the social construction of aging; grief, loss and death; and resilience, meaning, and spirituality. Methods used are autoethnography, narrative, participant …

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Dynamics Of N Removal Over Annual Time Periods In A Suburban River Network, Wilfred M. Wollheim, Bruce J. Peterson, S. M. Thomas, Charles S. Hopkinson, Charles J. Vorosmarty Sep 2008

Dynamics Of N Removal Over Annual Time Periods In A Suburban River Network, Wilfred M. Wollheim, Bruce J. Peterson, S. M. Thomas, Charles S. Hopkinson, Charles J. Vorosmarty

Faculty Publications

River systems are dynamic, highly connected water transfer networks that integrate a wide range of physical and biological processes. We used a river network nitrogen (N) removal model with daily temporal resolution to evaluate how elevated N inputs, saturation of the denitrification and total nitrate removal processes, and hydrologic conditions interact to determine the amount, timing and distribution of N removal in the fifth‐order river network of a suburban 400 km2 basin. Denitrification parameters were based on results from whole reach 15NO3 tracer additions. The model predicted that between 15 and 33% of dissolved inorganic nitrogen (DIN) inputs were denitrified …

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Global Health Law: Health In A Global Community, Lawrence O. Gostin Sep 2008

Global Health Law: Health In A Global Community, Lawrence O. Gostin

O'Neill Institute Papers

The examination of public health law traditionally focuses on constitutions, statutes, regulations, and common law at the national and sub-national level. However, the determinants of health (e.g., pathogens, air, food, water, even lifestyle choices) do not originate solely within national borders. Health threats inexorably spread to neighboring countries, regions, and even continents. Peoples’ lives are profoundly affected by commerce, politics, science, and technology from all over the world. Global integration and interdependence occur “as capital, traded goods, persons, concepts, images, ideas, and values diffuse across state boundaries.” It is for this reason that law and policy need to be transnational, …

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Ua25/2 25 Year Club Recognition Banquet, Wku Human Resources Sep 2008

Ua25/2 25 Year Club Recognition Banquet, Wku Human Resources

WKU Administration Documents

Program for 25 year service awards banquet with list of recipients.

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Commonwealth Times 2008-09-22 Sep 2008

Commonwealth Times 2008-09-22

Commonwealth Times, 1969-

No abstract provided.

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The Collegian (2008-09-22), Isis Lopez Sep 2008

The Collegian (2008-09-22), Isis Lopez

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 61, No. 6

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Grand Valley Forum, Volume 033, Number 05, September 22, 2008, Grand Valley State University Sep 2008

Grand Valley Forum, Volume 033, Number 05, September 22, 2008, Grand Valley State University

2008-2009, Volume 33

Grand Valley Forum is Grand Valley State's faculty and staff newsletter, published from 1976 to the present.

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