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Whalesong 2003-04-30, N/A N/A
The Guardian, April 30, 2003, Wright State University Student Body
The Guardian, April 30, 2003, Wright State University Student Body
The Guardian Student Newspaper
Twenty-four page issue of The Guardian, the official student-run newspaper for Wright State University. The Guardian has been published regularly since March of 1965.
Effects Of Grass Bug Feeding And Drought Stress On Selected Lines Of Crested Wheatgrass, Robert S. Nowak, James D. Hansen, Cheryl L. Nowak
Effects Of Grass Bug Feeding And Drought Stress On Selected Lines Of Crested Wheatgrass, Robert S. Nowak, James D. Hansen, Cheryl L. Nowak
Western North American Naturalist
The sequential effects of feeding by grass bugs (Irbisia pacifica [Hemiptera: Miridae]) and of drought stress on the growth of 2 crested wheatgrasses (the hybrid Agropyron cristatum × desertorum and A. cristatum cv. 'Fairway') were investigated in a controlled greenhouse experiment. Growth rates of genotypes that were previously selected for resistance to grass bug feeding were not consistently greater than those of unselected genotypes when plants were exposed to bug feeding. Thus, the mechanism of resistance to bug feeding for the selected genotypes does not appear to be "tolerance," i.e., rapid growth rates that allow the resistant genotypes to …
How Does Hiv-1 Infect A Susceptible Human Cell? : Current Thinking, Ali A. Al-Jabri
How Does Hiv-1 Infect A Susceptible Human Cell? : Current Thinking, Ali A. Al-Jabri
Sultan Qaboos University Medical Journal
To insure its survival, the human immunodeficiency virus (HIV), the causative agent of acquired immunodeficiency syndrome (AIDS), utilises more than one gate to enter a target cell. This strategy makes it more difficult for the immune system to defeat the virus. This has also made it difficult for scientists working in the HIV research to understand how exactly HIV infects a susceptible human cell. Such understanding will no doubt open many gates for scientists to vanquish the virus by designing agents that can block HIV entry into target cells, thus rendering the virus vulnerable to immune destruction. This will also …
Environmental Characteristics And Benthic Invertebrate Assemblages In Colorado Mountain Lakes, Brenda Moraska Lafrancois, Daren M. Carlisle, Koren R. Nydick, Brett M. Johnson, Jill S. Baron
Environmental Characteristics And Benthic Invertebrate Assemblages In Colorado Mountain Lakes, Brenda Moraska Lafrancois, Daren M. Carlisle, Koren R. Nydick, Brett M. Johnson, Jill S. Baron
Western North American Naturalist
Twenty-two high-elevation lakes (>3000 m) in Rocky Mountain National Park and Indian Peaks Wilderness Area, Colorado, were surveyed during summer 1998 to explore relationships among benthic invertebrates, water chemistry (particularly nitrate concentrations), and other environmental variables. Water samples were collected from the deepest portion of each lake and analyzed for ions and other water chemistry parameters. Benthic invertebrates were collected from the littoral zone using both a sweep net and Hess sampler. Physical and geographical measurements were derived from maps. Relationships among benthic invertebrate assemblages and environmental variables were examined using canonical correspondence analysis, and the importance of sampling …
Different Life Histories Of Brook Trout Populations Invading Mid-Elevation And High-Elevation Cutthroat Trout Streams In Colorado, Benjamen M. Kennedy, Douglas P. Peterson, Kurt D. Fausch
Different Life Histories Of Brook Trout Populations Invading Mid-Elevation And High-Elevation Cutthroat Trout Streams In Colorado, Benjamen M. Kennedy, Douglas P. Peterson, Kurt D. Fausch
Western North American Naturalist
Brook Trout (Salvelinus fontinalis), native to eastern North America, have invaded many montane cold-water systems of western North America, and these invasions are implicated in the decline of native cutthroat trout (Oncorhynchus clarki). If fisheries biologists are to be effective in managing brook trout invasions, demographic models that predict invasion success will need to incorporate life history variation in different environments. We tested whether brook trout populations invading streams at 2 different elevations varied in life history characteristics that influence population dynamics and potential invasion success. In the high-elevation stream (3195 m), water temperatures were colder …
Demographic And Environmental Relations Of Two Rare Astragalus Species Endemic To Washington County, Utah: Astragalus Holmgreniorum And A. Ampullarioides, Renée Van Buren, K. T. Harper
Demographic And Environmental Relations Of Two Rare Astragalus Species Endemic To Washington County, Utah: Astragalus Holmgreniorum And A. Ampullarioides, Renée Van Buren, K. T. Harper
Western North American Naturalist
Two endemic locoweeds of Washington County, Utah, Astragalus holmgreniorum and A. ampullarioides, were recently listed as federally endangered plant species (Federal Register 2001). They both occur in few, small populations surrounded by increasing human activity in the St. George, Utah, area. Demographic and habitat studies have been ongoing since 1992 and results of those studies are presented here. Astragalus holmgreniorum (Holmgren locoweed) is presently limited to 1 larger population and 2 smaller, isolated populations on the eastern and western edges of its range. It is a short-lived perennial that grows primarily on the Virgin limestone member of the Moenkopi …
Macroinvertebrate Community Structure And Related Environmental Variables In Two Forks Of The Virgin River, Utah, Terence P. Boyle, Matthew J. Strand
Macroinvertebrate Community Structure And Related Environmental Variables In Two Forks Of The Virgin River, Utah, Terence P. Boyle, Matthew J. Strand
Western North American Naturalist
Using multivariate analysis techniques, we analyzed variation in the structure of the benthic macroinvertebrate community in the North Fork and East Fork of the Virgin River in and above Zion National Park in concert with a number of naturally occurring and anthropogenic environmental variables. Correspondence analysis revealed that the community structure in the 2 streams was markedly different despite occurring in areas similar in topography, elevation, and terrestrial vegetation cover. Subsequent analyses of the 2 streams separately using canonical correspondence analysis to test for strength of association of environmental variables with variations in benthic macroinvertebrate community structure revealed that communities …
Inter-Simple Sequence Repeat (Issr) Variation In Three Populations Of Gaura Neomexicana Ssp. Coloradensis (Onagraceae), F.E. Warren Air Force Base, Cheyenne, Wyoming, Dorothy E. Tuthill, Gregory K. Brown
Inter-Simple Sequence Repeat (Issr) Variation In Three Populations Of Gaura Neomexicana Ssp. Coloradensis (Onagraceae), F.E. Warren Air Force Base, Cheyenne, Wyoming, Dorothy E. Tuthill, Gregory K. Brown
Western North American Naturalist
We investigated genetic variation within and between 3 populations of Gaura neomexicana ssp. coloradensis, a federally listed threatened species, using inter-simple sequence repeats. The data matrix included 24 individuals scored for 88 bands, with 3.4% missing data. Cluster analysis showed that members of the 3 populations are very similar and are intermixed in the phenogram. Principal coordinate analysis indicated that members of the Crow Creek population are different from the Diamond Creek and "unnamed drainage" populations. This could be the result of historic differences, current changes in vegetation at the Crow Creek site, or an artifact of limited sampling. …
Effects Of Clearcutting And Wildfire On Shrews (Soricidae: Sorex) In A Utah Coniferous Forest, J. Creed Clayton
Effects Of Clearcutting And Wildfire On Shrews (Soricidae: Sorex) In A Utah Coniferous Forest, J. Creed Clayton
Western North American Naturalist
No abstract provided.
Horned Lark (Eremophila Alpestris L.) Predation On Alkali Bees, Nomia Melanderi Cockerell, Richard W. Rust
Horned Lark (Eremophila Alpestris L.) Predation On Alkali Bees, Nomia Melanderi Cockerell, Richard W. Rust
Western North American Naturalist
Horned Larks (Eremophila alpestris L.), sampled during the first 2 weeks of alkali bee (Nomia melanderi Cockerell) emergence at bee nesting sites in 2 alfalfa seed-growing regions in central Nevada, ate significantly more male than female alkali bees. Exploitation rates suggest that individual Horned Larks consume 10 to 200 alkali bees per day and feed an additional 300 to 1000 bees per day to nestlings nestlings.
Burrowing Owl Nest Success And Burrow Longevity In North Central Oregon, Aaron L. Holmes, Gregory A. Green, Russell L. Morgan, Kent B. Livezey
Burrowing Owl Nest Success And Burrow Longevity In North Central Oregon, Aaron L. Holmes, Gregory A. Green, Russell L. Morgan, Kent B. Livezey
Western North American Naturalist
We studied nest success, burrow longevity, and rates of burrow reuse for a migratory population of Burrowing Owl (Athene cunicularia) in north central Oregon from 1995 to 1997. Nest success varied annually from 50% to 67%. Principal causes of nest failure were desertion (26%) and depredation by badgers (Taxidea taxus; 13%). Reuse of available nest and satellite burrows in subsequent years was 87% in 1996 and 57% in 1997. Reuse was highest at burrows in sandy soils, which may indicate that nest-site availability is a limiting factor in sandier soil types. Trampling by livestock resulted in …
Campus Observer, Volume 4, Issue 9, Office Of University Communications, Florida Institute Of Technology
Campus Observer, Volume 4, Issue 9, Office Of University Communications, Florida Institute Of Technology
Campus Observer
The Campus Observer was a newsletter for the Florida Tech community produced by the Office of University Communications (now the Office of Marketing and Communications). Visit the Campus Observer Collection Guide for more information. Earlier publications of this kind include Tech Talk and Technology Topics.
Finding Order In Nature: The Naturalist Tradition From Linnaeus To E. O. Wilson By P. L. Farber, C. Riley Nelson
Finding Order In Nature: The Naturalist Tradition From Linnaeus To E. O. Wilson By P. L. Farber, C. Riley Nelson
Western North American Naturalist
No abstract provided.
Phi Beta Delta Presentation - Lawrence Bruner, John Owens
Phi Beta Delta Presentation - Lawrence Bruner, John Owens
John Owens: Speeches and Appearances
A year ago I had the privilege of being inducted into Phi Beta Delta, and at that time I was invited to speak at the next induction ceremony, which it is my pleasure to do today. I am delighted to have this opportunity to congratulate our scholarship recipient, our new inductees, Peter Gleick, President of the Pacific Institute for Studies in Development, Environment and Security, and Merlyn Carlson, Director of the Nebraska Department of Agriculture and a member of the Governor's cabinet, on their honorary memberships in the society. I want to acknowledge Harriet Turner, Director of International affairs, for …
Epidemic Infections And Their Relevance To The Gulf And Other Arabian Peninsula Countries, Euan M. Scrimgeour
Epidemic Infections And Their Relevance To The Gulf And Other Arabian Peninsula Countries, Euan M. Scrimgeour
Sultan Qaboos University Medical Journal
No abstract provided.
Environmental Indicator Report: Land Use And Development, Phil Trowbridge
Environmental Indicator Report: Land Use And Development, Phil Trowbridge
PREP Reports & Publications
During the fall and winter of 2001-2002, the New Hampshire Estuaries Project’s Technical Advisory Committee (TAC) developed a suite of environmental indicators to track progress toward the NHEP’s management goals and objectives. These indicators were fully described in terms of their performance criteria, statistical methods, and measurable goals in the NHEP’s Monitoring Plan, which was most recently updated in March 2003 (NHEP, 2003). The next step is to use these indicators to produce an updated “State of the Estuaries” report by mid-2003. The TAC decided to break this task into three sections: shellfish indicators in the fall of 2002; water …
Environmental Indicator Report: Species And Habitats, Phil Trowbridge
Environmental Indicator Report: Species And Habitats, Phil Trowbridge
PREP Reports & Publications
During the fall and winter of 2001-2002, the New Hampshire Estuaries Project’s Technical Advisory Committee (TAC) developed a suite of environmental indicators to track progress toward the NHEP’s management goals and objectives. These indicators were fully described in terms of their performance criteria, statistical methods, and measurable goals in the NHEP’s Monitoring Plan, which was most recently updated in March 2003 (NHEP, 2003). The next step is to use these indicators to produce an updated “State of the Estuaries” report by mid-2003. The TAC decided to break this task into three sections: shellfish indicators in the fall of 2002; water …
Genetically Effective And Adult Population Sizes In The Apache Silverspot Butterfly, Speyeria Nokomis Apacheana (Lepidoptera: Nymphalidae), Hugh B. Britten, Erica Fleishman, George T. Austin, Dennis D. Murphy
Genetically Effective And Adult Population Sizes In The Apache Silverspot Butterfly, Speyeria Nokomis Apacheana (Lepidoptera: Nymphalidae), Hugh B. Britten, Erica Fleishman, George T. Austin, Dennis D. Murphy
Western North American Naturalist
Genetically effective and adult population sizes of the Apache silverspot butterfly (Speyeria nokomiis apacheana) from the Great Basin of North America were tracked from 1991 to 1997. Speyeria nokomis inhabits mesic habitats in the Great Basin, and its recent declines in abundance have raised concerns about its future persistence. Adult population size estimates determined from mark-recapture methods ranged from 100 to 1900 individuals from 1993 through 1997. Genetically effective population sizes based on temporal changes in allozyme frequencies ranged from less tha 1 individual to 20 individuals between 1991 and 1995. Despite these small annual estimates, it is …
The Inkwell, Armstrong Atlantic State University
Changes In The Distribution And Status Of Sage-Grouse In Utah, Jeffrey L. Beck, Dean L. Mitchell, Brian D. Maxfield
Changes In The Distribution And Status Of Sage-Grouse In Utah, Jeffrey L. Beck, Dean L. Mitchell, Brian D. Maxfield
Western North American Naturalist
Sage-grouse (Centrocercus spp.) were abundant in all of Utah's 29 counties at the time of European settlement wherever sagebrush (Artemisia spp.) occurred. Greater Sage-Grouse (C. urophasianus) inhabited areas north and west of the Colorado River, and Gunnison Sage-Grouse (C. minimus) occupied suitable habitat south and east of the Colorado River. The largest Greater Sage-Grouse populations in Utah are currently restricted to suitable habitats in Box Elder, Garfield, Rich, Uintah, and Wayne Counties. A remnant breeding population of Gunnison Sage-Grouse occurs in eastern San Juan County. We stratified Greater Sage-Grouse populations (1971–2000) by counties where …
Food Habits Of Great Horned Owls In Northeastern California With Notes On Seasonal Diet Shifts, Raymond J. Bogiatto, Brian A. Sardella, Jennifer J. Essex
Food Habits Of Great Horned Owls In Northeastern California With Notes On Seasonal Diet Shifts, Raymond J. Bogiatto, Brian A. Sardella, Jennifer J. Essex
Western North American Naturalist
No abstract provided.
Pinyon-Juniper Woodlands In Zion National Park, Utah, Kimball T. Harper, Stewart C. Sanderson, E. Durant Mcarthur
Pinyon-Juniper Woodlands In Zion National Park, Utah, Kimball T. Harper, Stewart C. Sanderson, E. Durant Mcarthur
Western North American Naturalist
Juniperus osteosperma–Pinus monophylla or P. edulis (P-J) woodlands are the most widespread plant community in Zion National Park (ZNP), southwestern Utah. These woodlands dominate nearly half of the park's land area. Our study of this vegetational complex is based on a sample consisting of 115 macroplots (each 0.01 ha in area) objectively distributed across the entire area of ZNP. We recognize 3 subtypes within the P-J complex: Juniperus osteosperma(Utah juniper) alone, juniper with P. monophylla (single-leaf pinyon), and juniper with P. edulis (two-leaf pinyon). The 2 pinyon pines rarely occur together, and thus the foregoing subtypes do not overlap …
Distribution Of Arylamine N-Acetyltransferase 2 (Nat2) Genotypes Among Omanis, Musbah Om Tanira, Mehmet Simsek, Khalid Al Lawatia, Khulood, Hameedah Al Barawani, Riad A. Bayoumi
Distribution Of Arylamine N-Acetyltransferase 2 (Nat2) Genotypes Among Omanis, Musbah Om Tanira, Mehmet Simsek, Khalid Al Lawatia, Khulood, Hameedah Al Barawani, Riad A. Bayoumi
Sultan Qaboos University Medical Journal
Objective: to determine the genotypes of arylamine N-acetyltransferase (NAT2) among 127 unrelated apparently healthy Omanis. Method: Identify the most common known polymorphisms of NAT*2 gene namely, G191A, C282T, C341T, C481T, G590A, A803G and G857A using PCR-RFLP analysis. Results: Eleven allele variants (3 alternative) and 30 different genotypes were determined. The commonest alleles were found to be NAT*5B, NAT2*6A and NAT*4 with corresponding frequencies of 0.362, 0.248 and 0.189 respectively. The overall frequency of rapid acetylator alleles was 0.25. Conclusion: A new allele variant containing G590A, C282T and T341C polymorphisms was found in one subject (was named NAT2*5J). The commonest genotypes …
Panel Session I - Linking The Past To The Future, Shannon W. Lucid
Panel Session I - Linking The Past To The Future, Shannon W. Lucid
Space Congress® Proceedings
No abstract provided.
April 29, 2003, Council On Graduate Studies
The Bates Student - Volume 132 Number 19 - April 29, 2003, Bates College
The Bates Student - Volume 132 Number 19 - April 29, 2003, Bates College
The Bates Student
No abstract provided.
A Simple Reason For A Big Difference: Wolves Do Not Look Back At Humans, But Dogs Do, Ádám Miklósi, Eniko Kubinyi, József Topál, Márta Gácsi, Zsófia Virányi, Vilmos Csányi
A Simple Reason For A Big Difference: Wolves Do Not Look Back At Humans, But Dogs Do, Ádám Miklósi, Eniko Kubinyi, József Topál, Márta Gácsi, Zsófia Virányi, Vilmos Csányi
Communication Skills Collection
The present investigations were undertaken to compare interspecific communicative abilities of dogs and wolves, which were socialized to humans at comparable levels. The first study demonstrated that socialized wolves were able to locate the place of hidden food indicated by the touching and, to some extent, pointing cues provided by the familiar human experimenter, but their performance remained inferior to that of dogs. In the second study, we have found that, after undergoing training to solve a simple manipulation task, dogs that are faced with an insoluble version of the same problem look/gaze at the human, while socialized wolves do …
Murray Ledger And Times, April 29, 2003, Murray Ledger And Times
Murray Ledger And Times, April 29, 2003, Murray Ledger And Times
The Murray Ledger & Times
No abstract provided.