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Do Rhinoceros Auklet, Cerorhinca Monocerata, Fledglings Fly To The Sea From Their Natal Burrows?, James L. Hayward, Jere K. Clayburn Jan 2004

Do Rhinoceros Auklet, Cerorhinca Monocerata, Fledglings Fly To The Sea From Their Natal Burrows?, James L. Hayward, Jere K. Clayburn

Faculty Publications

The mode of departure of Rhinoceros Auklet fledglings from their nest burrows has remained uncertain. Both walk-down and fly-down hypotheses have been proposed. Here we use the unique geography of Protection Island, Washington, to evaluate the fly-down hypothesis. Some fledglings raised on Protection Island do appear to walk to the water, but our results suggest that many of the island's fledgling Rhinoceros Auklets fly to the sea.

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Methods For Estimating Long-Distance Dispersal, Ran Nathan, Gad Perry, James T. Cronin, Allan E. Strand, Michael L. Cain Nov 2003

Methods For Estimating Long-Distance Dispersal, Ran Nathan, Gad Perry, James T. Cronin, Allan E. Strand, Michael L. Cain

Faculty Publications

Long-distance dispersal (LDD) includes events in which propagules arrive, but do not necessarily establish, at a site far removed from their origin. Although important in a variety of ecological contexts, the system-specific nature of LDD makes "far removed" difficult to quantify, partly, but not exclusively, because of inherent uncertainty typically involved with the highly stochastic LDD processes. We critically review the main methods employed in studies of dispersal, in order to facilitate the evaluation of their pertinence to specific aspects of LDD research. Using a novel classification framework, we identify six main methodological groups: biogeographical; Eulerian and Lagrangian movement/redistributional; short-term …

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Pelvic Sexual Dimorphism In A Metatherian, Didelphis Virginiana: Implications For Eutherians, Robert G. Tague Nov 2003

Pelvic Sexual Dimorphism In A Metatherian, Didelphis Virginiana: Implications For Eutherians, Robert G. Tague

Faculty Publications

Eutherians give birth to relatively large infants. Females have larger pelves than males, though males typically have larger nonpelvic bones. Pelvic dimorphism is an adaptation for parturition. Metatherian females, who give birth to markedly small infants, should not show pelvic adaptations for parturition and should have smaller pelves than males. Adult females and males of the Virginia opossum, Didelphis virginiana, are compared. Males are significantly larger than females in absolute size for 14 of 16 pelvic and 8 nonpelvic measures. Sexes did not differ significantly for lower iliac length and posterior space of midplane. However, relative lengths for females are …

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Mapping The Intellectual Structure Of Information Science And Information Technology: A Study Of Geographic Information Science, Anita Coleman Oct 2003

Mapping The Intellectual Structure Of Information Science And Information Technology: A Study Of Geographic Information Science, Anita Coleman

Faculty Publications

No abstract provided.

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Nitric Oxide Mediates Seasonal Muscle Potentiation In Clam Gills, Louis F. Gainey Jr., Michael J. Greenberg Oct 2003

Nitric Oxide Mediates Seasonal Muscle Potentiation In Clam Gills, Louis F. Gainey Jr., Michael J. Greenberg

Faculty Publications

The physiology and timing of gill muscle potentiation were explored in the clam Mercenaria mercenaria. When isolated demibranchs were exposed twice (with an intervening wash) to the same concentration of 5-hydroxytryptamine, the second contraction was larger than the first. This potentiation was seasonal: it was present from November through June, and absent from July through October. Potentiation was not affected by the geographic origin of the clams, nor by their acclimation temperature. Potentiation was inhibited by the nitric oxide synthase (NOS) inhibitor L-NAME and mimicked by the nitric oxide (NO) donor DEANO. During the season of potentiation, immunoreactive NOS appeared …

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Book Review Of God Who Creates: Essays In Honor Of W. Sibley Towner, By William P. Brown And S. Dean Mcbride, Jr., Richard M. Davidson Oct 2003

Book Review Of God Who Creates: Essays In Honor Of W. Sibley Towner, By William P. Brown And S. Dean Mcbride, Jr., Richard M. Davidson

Faculty Publications

No abstract provided.

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Synergistic Use Of Lidar And Color Aerial Photography For Mapping Urban Parcel Imperviousness, Michael E. Hodgson, John R. Jensen, Jason A. Tullis, Kevin D. Riordan, Clark M. Archer Sep 2003

Synergistic Use Of Lidar And Color Aerial Photography For Mapping Urban Parcel Imperviousness, Michael E. Hodgson, John R. Jensen, Jason A. Tullis, Kevin D. Riordan, Clark M. Archer

Faculty Publications

The imperviousness of land parcels was mapped and evaluated using high spatial resolution digitized color orthophotography and surface-cover height extracted from multiple-return lidar data. Maximum-likelihood classification, spectral clustering, and expert system approaches were used to extract the impervious information from the datasets. Classified pixels (or segments) were aggregated to parcels. The classification model based on the use of both the orthophotography and lidar-derived surface-cover height yielded impervious surface results for all parcels that were within 15 percent of reference data. The standard error for the rule-based per-pixel model was 7.15 percent with a maximum observed error of 18.94 percent. The …

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Advances In Satellite Radiometry For The Surveillance Of Surface Temperatures, Ocean Eddies And Upwelling Processes In The Gulf Of Mexico Using Goes-8 Measurements During Summer, Nan Walker, Soe Myint, Adele Babin, Alaric Haag Aug 2003

Advances In Satellite Radiometry For The Surveillance Of Surface Temperatures, Ocean Eddies And Upwelling Processes In The Gulf Of Mexico Using Goes-8 Measurements During Summer, Nan Walker, Soe Myint, Adele Babin, Alaric Haag

Faculty Publications

GOES-8 satellite infrared (IR) measurements have been under-utilized in oceanographic research, although they provide several advantages over measurements from other sensors such as the NOAA AVHRR. Frequent coverage (48 times/day) over large regions, low noise in the mid- IR channel, and sole use of nighttime data have enabled the development of improved techniques for producing "de-clouded" images and calculating accurate SSTs (with RMS errors < 0.5°C), over cloudy and humid regions such as the Gulf of Mexico. Animations of SST composite images reveal movements of the Loop Current, its frontal eddies and coastal upwelling even during summer months. GOES-12 and future GOES imagers for the next decade are missing the 12 μm channel; however, this study demonstrates that the mid-IR channel is even more useful than previously thought.

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The Case Against Libraries As ‘Safe Places’, Anthony Bernier Aug 2003

The Case Against Libraries As ‘Safe Places’, Anthony Bernier

Faculty Publications

No abstract provided.

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Global Patterns Of Dissolved N, P And Si In Large Rivers, R. Eugene Turner, Nancy N. Rabalais, D. Justic', Q. Dortch Jul 2003

Global Patterns Of Dissolved N, P And Si In Large Rivers, R. Eugene Turner, Nancy N. Rabalais, D. Justic', Q. Dortch

Faculty Publications

The concentration of dissolved inorganic nitrogen (DIN), dissolved nitrate-N, Total-N (TN), dissolved inorganic phosphate (DIP), total phosphorus (TP), dissolved silicate-Si (DSi) and their ratios in the world's largest rivers are examined using a global data base that includes 37% of the earth's watershed area and half its population. These data were compared to water quality in 42 subbasins of the relatively well-monitored Mississippi River basin (MRB) and of 82 small watersheds of the United States. The average total nitrogen concentration varies over three orders of magnitude among both world river watersheds and the MRB, and is primarily dependent on variations …

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Genetic Variation Among World Populations: Inferences From 100 Alu Insertion Polymorphisms, W. Scott Watkins, Alan R. Rogers, Christopher T. Ostler, Steve Wooding, Michael J. Bamshad, Anna Marie E. Brassington, Marion L. Carroll, Son V. Nguyen, Jerilyn A. Walker, B. V.Ravi Prasad, P. Govinda Reddy, Pradipta K. Das, Mark A. Batzer, Lynn B. Jorde Jul 2003

Genetic Variation Among World Populations: Inferences From 100 Alu Insertion Polymorphisms, W. Scott Watkins, Alan R. Rogers, Christopher T. Ostler, Steve Wooding, Michael J. Bamshad, Anna Marie E. Brassington, Marion L. Carroll, Son V. Nguyen, Jerilyn A. Walker, B. V.Ravi Prasad, P. Govinda Reddy, Pradipta K. Das, Mark A. Batzer, Lynn B. Jorde

Faculty Publications

We examine the distribution and structure of human genetic diversity for 710 individuals representing 31 populations from Africa, East Asia, Europe, and India using 100 Alu insertion polymorphisms from all 22 autosomes. Alu diversity is highest in Africans (0.349) and lowest in Europeans (0.297). Alu insertion frequency is lowest in Africans (0.463) and higher in Indians (0.544), E. Asians (0.557), and Europeans (0.559). Large genetic distances are observed among African populations and between African and non-African populations. The root of a neighbor-joining network is located closest to the African populations. These findings are consistent with an African origin of modern …

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The Utility Of Single Nucleotide Polymorphisms In Inferences Of Population History, Robb T. Brumfield, Peter Beerli, Deborah A. Nickerson, Scott V. Edwards May 2003

The Utility Of Single Nucleotide Polymorphisms In Inferences Of Population History, Robb T. Brumfield, Peter Beerli, Deborah A. Nickerson, Scott V. Edwards

Faculty Publications

Single nucleotide polymorphisms (SNPs) represent the most widespread type of sequence variation in genomes, yet they have only emerged recently as valuable genetic markers for revealing the evolutionary history of populations. Their occurrence throughout the genome also makes them ideal for analyses of speciation and historical demography, especially in light of recent theory suggesting that many unlinked nuclear loci are needed to estimate population genetic parameters with statistical confidence. In spite of having lower variation compared with microsatellites, SNPs should make the comparison of genomic diversities and histories of different species (the core goal of comparative biogeography) more straightforward than …

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Evidence For Survival Of Pleistocene Climatic Changes In Northern Refugia By The Land Snail Trochoidea Geyeri, David Posada, Markus Pfenninger, Frederic Magnin Apr 2003

Evidence For Survival Of Pleistocene Climatic Changes In Northern Refugia By The Land Snail Trochoidea Geyeri, David Posada, Markus Pfenninger, Frederic Magnin

Faculty Publications

The study of organisms with restricted dispersal abilities and presence in the fossil record is particularly adequate to understand the impact of climate changes on the distribution and genetic structure of species. Trochoidea geyeri (Soos 1926) is a land snail restricted to a patchy, insular distribution in Germany and France. Fossil evidence suggests that current populations of T. geyeri are relicts of a much more widespread distribution during more favourable climatic periods in the Pleistocene. Results: Phylogeographic analysis of the mitochondrial 16S rDNA and nuclear ITS-1 sequence variation was used to infer the history of the remnant populations of T. …

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Search And Recovery Of The Space Shuttle Columbia: A Geospatial 1st Responder Perspective, Jeffrey M. Williams Apr 2003

Search And Recovery Of The Space Shuttle Columbia: A Geospatial 1st Responder Perspective, Jeffrey M. Williams

Faculty Publications

A first person account of the Texas geospatial volunteers and their efforts to recover the remains of the Space Shuttle Columbia and her crew lost over eastern Texas and western Louisiana on February 1st, 2003.

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Y Chromosome Str Haplotypes And The Genetic Structures Of U.S. Populations Of African, European, And Hispanic Ancestry, Manfred Kayser, Silke Brauer, Hiltrud Schädlich, Mechthild Prinz, Mark A. Batzer, Peter A. Zimmerman, B. A. Boatin, Mark Stoneking Apr 2003

Y Chromosome Str Haplotypes And The Genetic Structures Of U.S. Populations Of African, European, And Hispanic Ancestry, Manfred Kayser, Silke Brauer, Hiltrud Schädlich, Mechthild Prinz, Mark A. Batzer, Peter A. Zimmerman, B. A. Boatin, Mark Stoneking

Faculty Publications

To investigate geographic structure within U.S. ethnic populations, we analyzed 1705 haplotypes on the basis of 9 short tandem repeat (STR) loci on the Y-chromosome from 9-11 groups each of African-Americans, European-Americans, and Hispanics. There were no significant differences in the distribution of Y-STR haplotypes among African-American groups, whereas European-American and Hispanic groups did exhibit significant geographic heterogeneity. However, the significant heterogeneity resulted from one sample; removal of that sample in each case eliminated the significant heterogeneity. Multidimensional scaling analysis of RST values indicated that African-American groups formed a distinct cluster, whereas there was some intermingling of European-American and Hispanic …

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Ars Edendi: A Practical Introduction To Editing Medieval Latin Texts, Scott Gwara Apr 2003

Ars Edendi: A Practical Introduction To Editing Medieval Latin Texts, Scott Gwara

Faculty Publications

No abstract provided.

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Bacillus Anthracis Virulence In Guinea Pigs Vaccinated With Anthrax Vaccine Adsorbed Is Linked To Plasmid Quantities And Clonality, Pamala R. Coker, Kimothy L. Smith, Patricia F. Fellows, Galena Rybachuck, Konstantin G. Kousoulas, Martin E. Hugh-Jones Mar 2003

Bacillus Anthracis Virulence In Guinea Pigs Vaccinated With Anthrax Vaccine Adsorbed Is Linked To Plasmid Quantities And Clonality, Pamala R. Coker, Kimothy L. Smith, Patricia F. Fellows, Galena Rybachuck, Konstantin G. Kousoulas, Martin E. Hugh-Jones

Faculty Publications

Bacillus anthracis is a bacterial pathogen of great importance, both historically and in the present. This study presents data collected from several investigations and indicates that B. anthracis virulence is associated with the clonality and virulence of plasmids pXO1 and pXO2. Guinea pigs vaccinated with Anthrax Vaccine Adsorbed were challenged with 20 B. anthracis isolates representative of worldwide genetic diversity. These same isolates were characterized with respect to plasmid copy number by using a novel method of quantitative PCR developed for rapid and efficient detection of B. anthracis from environmental samples. We found that the copy numbers for both pXO1 …

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A Meta-Analysis Of Genome-Wide Linkage Scans For Hypertension: The National Heart, Lung And Blood Institute Family Blood Pressure Program, Michael A. Province, Sharon L.R. Kardia, Koustubh Ranade, Dabeeru C. Rao, Bonnie A. Thiel, Richard S. Cooper, Neil Risch, Stephen T. Turner, David R. Cox, Steven C. Hunt, Alan B. Weder, Eric Boerwinkle Feb 2003

A Meta-Analysis Of Genome-Wide Linkage Scans For Hypertension: The National Heart, Lung And Blood Institute Family Blood Pressure Program, Michael A. Province, Sharon L.R. Kardia, Koustubh Ranade, Dabeeru C. Rao, Bonnie A. Thiel, Richard S. Cooper, Neil Risch, Stephen T. Turner, David R. Cox, Steven C. Hunt, Alan B. Weder, Eric Boerwinkle

Faculty Publications

Background: Four multicenter Networks (GenNet, GENOA, HyperGEN, SAPPHIRe) form the National Heart, Lung and Blood Institute Family Blood Pressure Program (FBPP), to search for hypertension/blood pressure (BP) genes. The networks used different family designs and targeted multiple ethnic groups, using standardized protocols and definitions. Linkage genome scans were done on samples within each network (N = 6245 relatives). Methods: The evidence was synthesized using meta-analysis. Results: Combining ethnic groups, no region reached LOD >2, but several small peaks were identified, including chromosome 2p where two other recent reports find hypertension linkage. Conclusions: No regions show uniformly large effects on BP/hypertension …

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Top Management Team Heterogeneity And Sme Export Performance: Investigating The Role Of Environmental Uncertainty, Franz T. Lohrke, Geralyn Mcclure Franklin, Vinay Kothari Jan 2003

Top Management Team Heterogeneity And Sme Export Performance: Investigating The Role Of Environmental Uncertainty, Franz T. Lohrke, Geralyn Mcclure Franklin, Vinay Kothari

Faculty Publications

Research has generally found that firms competing in high uncertainty environments gain advantages from having diverse (heterogeneous) management teams (TMTs). Employing a national survey of 70 small- and medium-sized enterprises (SMEs), the present study examined whether TM T heterogeneity in functional background, international work experience, and foreign language proficiency had a stronger relationship with export performance for firms competing in high than those competing in low uncertainty environments. Results were generally weak when market and industry factors contributing to uncertainty were examined separately; however, additional analysis showed that the hypothesized relationship did exist when uncertainty was measured employing both factors …

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Sphericules And Fragments: Minding The Gaps, Ted M. Coopman Jan 2003

Sphericules And Fragments: Minding The Gaps, Ted M. Coopman

Faculty Publications

Michael McGee exemplified the scholar embracing all tools and ideas, the fragments that make up our existence, in exploring and explaining our world. I argue that bridging the gaps that separate these fragments, or what Gitlin (1989) called sphericules, is the essence of what constitutes public scholarship. Starting from Habermas' (1989) description of the public sphere I explore how interdisciplinarity holds the keys to bridging the gaps between publics. I supported this with a discussion of the history of academe in America and the brief survey of the new infrastructures being built to expand our fields of exploration and the …

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“‘Habent Sua Fata Libelli’: Der Inhalt Der Bibliothek Nicolaus Lenaus Als Hinweis Auf Die Belletristischen Und Philosophischen Einflüsse Auf Sein Werk”, Carol A. Leibiger Jan 2003

“‘Habent Sua Fata Libelli’: Der Inhalt Der Bibliothek Nicolaus Lenaus Als Hinweis Auf Die Belletristischen Und Philosophischen Einflüsse Auf Sein Werk”, Carol A. Leibiger

Faculty Publications

No abstract provided.

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“Legal Or Illegal? Documented Or Undocumented?” The Struggle Over Brookhaven’S Neighborhood Preservation Act, Jackson B. Miller Jan 2003

“Legal Or Illegal? Documented Or Undocumented?” The Struggle Over Brookhaven’S Neighborhood Preservation Act, Jackson B. Miller

Faculty Publications

This critical essay applies the concept of “presence” as a theoretical lens for explaining the rhetorical efficacy of protest events surrounding a contemporary debate about immigrants’ rights in a suburban New York township. Specifically, the protests surrounding the town board meetings regarding Brookhaven’s “Neighborhood Preservation Act,” a piece of legislation geared toward making rental laws more stringent, are examined. A group comprised largely of white, upper middle-class citizens voiced their support for the proposed legislation, while a group of day laborers and those sympathetic with their cause characterized the proposed legislation as a form of racial discrimination disguised as a …

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Linking Landscape And Water Quality In The Mississippi River Basin For 200 Years, R. Eugene Turner, Nancy N. Rabalais Jan 2003

Linking Landscape And Water Quality In The Mississippi River Basin For 200 Years, R. Eugene Turner, Nancy N. Rabalais

Faculty Publications

Two centuries of land use in the Mississippi River watershed are reflected in the water quality of its streams and in the continental shelf ecosystem receiving its discharge. The most recent influence on nutrient loading-intense and widespread farming and especially fertilizer use-has had a more significant effect on water quality than has land drainage or the conversion of native vegetation to cropland and grazing pastures. The 200-year record of nutrient loading to offshore water is reflected in the paleoreconstructed record of plankton in dated sediments. This record illustrates that the development of fair, sustained management of inland ecosystems is linked …

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The Role Of Lawyers In Strategic Alliances, George W. Dent Jan 2003

The Role Of Lawyers In Strategic Alliances, George W. Dent

Faculty Publications

No abstract provided.

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Using Multiple Intelligence Theory To Teach K-2 Geography, Timothy Lintner Jan 2003

Using Multiple Intelligence Theory To Teach K-2 Geography, Timothy Lintner

Faculty Publications

No abstract provided.

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Matrix Composition Affects The Spatial Ecology Of A Prairie Planthopper, Kyle J. Haynes, James T. Cronin Jan 2003

Matrix Composition Affects The Spatial Ecology Of A Prairie Planthopper, Kyle J. Haynes, James T. Cronin

Faculty Publications

To date, there is a lack of well-controlled field experiments that disentangle the effects of the intervening matrix from other landscape variables (e.g., patch geography or quality) that might influence animal dispersal among patches. We performed a field experiment to investigate how the movement of a delphacid planthopper (Prokelisia crocea) among discrete patches of prairie cordgrass (Spartina pectinata) is affected by the composition of the matrix (mudflat, native nonhost grasses, and the introduced grass smooth brome [Bromus inermis]). Within each matrix type, marked planthoppers were released onto experimental cordgrass patches that were made identical in size, isolation, and host plant …

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William E. Doolittle: Mediator Between The World Of Work And The World Of Books, Andrew Sluyter Jan 2003

William E. Doolittle: Mediator Between The World Of Work And The World Of Books, Andrew Sluyter

Faculty Publications

No abstract provided.

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Neo-Environmental Determinism, Intellectual Damage Control, And Nature/Society Science, Andrew Sluyter Jan 2003

Neo-Environmental Determinism, Intellectual Damage Control, And Nature/Society Science, Andrew Sluyter

Faculty Publications

No abstract provided.

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Material-Conceptual Landscape Transformation And The Emergence Of The Pristine Myth In Early Colonial Mexico, Andrew Sluyter Jan 2003

Material-Conceptual Landscape Transformation And The Emergence Of The Pristine Myth In Early Colonial Mexico, Andrew Sluyter

Faculty Publications

No abstract provided.

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Movement And Spatial Population Structure Of A Prairie Planthopper, James T. Cronin Jan 2003

Movement And Spatial Population Structure Of A Prairie Planthopper, James T. Cronin

Faculty Publications

The transfer of organisms among patches is a key process influencing the spatial structure and regional dynamics of a population; yet, detailed experimental studies of animal movement among patches are uncommon. I performed a series of mark-recapture studies to quantify the movement of a planthopper, Prokelisia crocea (Hemiptera: Delphacidae), among discrete patches of its host plant, prairie cordgrass (Spartina pectinata). Results from these dispersal studies were used to predict the natural distributions and to characterize the spatial population structure of P. crocea. Planthopper emigration loss per patch increased linearly with the density of female conspecifics and was nonlinearly related to …

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