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Articles 6241 - 6270 of 8611
Full-Text Articles in Entire DC Network
Fifteen New Species Of Sonoma Casey From The Eastern United States And A Description Of The Male Of Sonoma Tolulae (Leconte) (Coleoptera: Staphylinidae: Pselaphinae), Michael L. Ferro, Christopher E. Carlton
Fifteen New Species Of Sonoma Casey From The Eastern United States And A Description Of The Male Of Sonoma Tolulae (Leconte) (Coleoptera: Staphylinidae: Pselaphinae), Michael L. Ferro, Christopher E. Carlton
Insecta Mundi
Fifteen new species of faronine pselaphines in the genus Sonoma Casey are described: S. baylessae; S. brasstownensis; S. chouljenkoi; S. cygnus; S. gilae; S. gimmeli; S. holmesi; S. mayori; S. nicholsae; S. parkorum; S. nhunguyeni; S. sokolovi; S. streptophorophallus; S. tishechkini; S. tridens. Male specimens of Sonoma tolulae (LeConte) were collected from the type locality and this species is redescribed. These species bring the total diversity of the genus to 43 species. The genus is divided into four species groups based on characters of the male genitalia. Sonoma corticina Casey was not included in the genus when it was …
Making Ecodistricts Concepts And Methods For Advancing Sustainability In Neighborhoods, Ethan Seltzer, Timothy W. Smith, Joseph Cortright, Ellen M. Bassett, Vivek Shandas
Making Ecodistricts Concepts And Methods For Advancing Sustainability In Neighborhoods, Ethan Seltzer, Timothy W. Smith, Joseph Cortright, Ellen M. Bassett, Vivek Shandas
Institute for Sustainable Solutions Publications and Presentations
This report is about how developing "EcoDistricts" in Portland can result in more sustainable neighborhoods and a more sustainable city. With generous funding from the Bullitt Foundation in Seattle, we have been able to take a deeper look into core concepts underlying the notion of pursuing citywide sustainability through neighborhood-scale action. The question becomes: What needs to be done to enable communities to self-manage their resource using behavior by creating community-inspired interventions that change relationships between people and between people and place? To answer these questions and to contribute to the emerging practice of EcoDistrict formation and development, what follows …
Evaluating Tiffs (Toolbox For Lidar Data Filtering And Forest Studies) In Deriving Forest Measurements From Lidar Data, John Chapman, I-Kuai Hung, Jeff Tippen
Evaluating Tiffs (Toolbox For Lidar Data Filtering And Forest Studies) In Deriving Forest Measurements From Lidar Data, John Chapman, I-Kuai Hung, Jeff Tippen
Faculty Publications
Recent advances in LiDAR (Light Detection and Ranging) technology have allowed for the remote sensing of important forest characteristics to be more reliable and commercially available. Studies have shown that this technology can adequately estimate forest characteristics such as individual tree locations, tree heights, and crown diameters. These values are then used to estimate biophysical properties of forests, such as basal area and timber volume. This study assessed the capability of a commercially available program, Tiffs (Toolbox for Lidar Data Filtering and Forest Studies), to accurately estimate forest characteristics, as compared to data collected at the plot level using traditional …
Protecting Inshore And Demersal Finfish Identification Of Critical Habitats For Juvenile Dhufish Workshop Report, Gabby E. Mitsopoulos, Brett W. Molony
Protecting Inshore And Demersal Finfish Identification Of Critical Habitats For Juvenile Dhufish Workshop Report, Gabby E. Mitsopoulos, Brett W. Molony
Fisheries Research Reports
A Juvenile Dhufish Workshop was held at the Western Australian Fisheries and Marine Research Laboratories (WAFMRL) on 18th March 2010, which was the first component of a State Natural Resource Management (NRM) funded project entitled “Protecting Inshore and Demersal Finfish - Identification of Critical Habitats for Juvenile Dhufish”. The primary objective of the workshop was to provide a forum for discussion in order to compile all biological, ecological and anecdotal information on the early life history of dhufish, to create hypotheses of habitat requirements for juvenile dhufish and provide recommendations as to which sampling methods should be used to confirm …
Review Of The Exploitation Of Marine Resources Of The Australian Indian Ocean Territories: The Implications Of Biogeographic Isolation For Tropical Island Fisheries, Matthew Hourston
Fisheries Research Reports
The small islands of the Indian Ocean Territories are isolated reefs in an expanse of open ocean of abyssal depth. The majority of marine species that live on their reefs and lagoons have settled there from remote locations. Colonising individuals are presumed to have come to the island as the result of unusual weather and current conditions and form populations that are, necessarily, largely self-sustaining. The isolated populations that make up many of the fish and invertebrate stocks at the Cocos (Keeling) and Christmas Islands rely almost exclusively on larvae returning to their home reef to settle, grow and ultimately …
Insectivorous Bat Assemblages In Relation To Spatial Aspects Of Virgin Jungle Reserves In Peninsular Malaysia., Joann Christine Luruthusamy
Insectivorous Bat Assemblages In Relation To Spatial Aspects Of Virgin Jungle Reserves In Peninsular Malaysia., Joann Christine Luruthusamy
Student Works (2010-2019)
The tropical region supports the highest diversity of bat fauna known. Reasons for their success are mainly due to their large geographical ranges, the diversity of habitats, various foraging strategies and the tendency to exhibit a variety of roosting behaviour. This study addresses the issue of insectivorous bat distribution in relation to spatial aspects such as geography, size, distance and topography. This information was gathered from the 958 individuals and 27 insectivorous bat species that were captured and identified over a span of 18 months. This study which included six virgin jungle reserves of various sizes across Peninsular Malaysia revealed …
The Role Of Unrealistic Optimism In Explaining Preventive Behaviors In High Versus Low Endemic Malaria Settings In Belize, Daniel G. Handysides
The Role Of Unrealistic Optimism In Explaining Preventive Behaviors In High Versus Low Endemic Malaria Settings In Belize, Daniel G. Handysides
Loma Linda University Electronic Theses, Dissertations & Projects
Background: Of all the diseases an individual can encounter in the world, malaria is one of the most destructive. Simple measures like sleeping under a bednet would greatly reduce the burden (Abeku, 2007). When people estimate their risk relative to others, they are most often unrealistically optimistic, which may explain why those at risk often fail to perform behaviors, such as using a bednet that will reduce their risk. However, one study showed that people at high risk for malaria held pessimistic perceptions of their risk for the disease, but the reasons for this finding are unclear (Morrison, Ager, & …
Intra- And Interpopulation Variation In Morphology And Behaviors In The Sailfin Molly, Poecilia Latipinna (Poeciliidae: Poecilia: Mollienesia), Jennifer Seda
All Theses
Understanding factors that contribute to population differences can provide insight into the process of speciation, yet population level studies seldom take into account variation among individuals within a population. Such intrapopulation variation may influence the degree to which interpopulation variation in suites of traits can arise. My research focused on characterizing intra- and interpopulation variation in male morphological and behavioral traits in the sailfin molly, Poecilia latipinna. First, I characterized the overall body shape of several populations of P. latipinna collected from north Florida in two different years. I used linear morphological measurements to examine shape and found there to …
Evolutionary Relationships In Afro-Malagasy Schefflera (Araliaceae) Based On Nuclear And Plastid Markers, Morgan Gostel
Evolutionary Relationships In Afro-Malagasy Schefflera (Araliaceae) Based On Nuclear And Plastid Markers, Morgan Gostel
Theses and Dissertations
The genus Schefflera is the largest in Araliaceae, with approximately 900 species. Recent studies have shown that Schefflera is polyphyletic and represents no fewer than five distinct clades, each corresponding to a specific geographic region including Asia, continental Africa and Madagascar, Melanesia, the Neotropics, and a small clade distributed throughout several islands in the insular Pacific Ocean. The Afro-Malagasy clade contains nearly 50 species distributed throughout tropical, sub-Saharan Africa, Madagascar, the Comoros, and the Seychelles islands. Previous studies have suggested that this group is monophyletic, identifying two smaller subclades within Afro-Malagasy Schefflera corresponding roughly to informal groups identified as “Meiopanax” …
Multidisciplinary Assessment And Documentation Of Past And Present Human Impacts On The Neotropical Forests Of Petén, Guatemala, Christopher Stephen Balzotti
Multidisciplinary Assessment And Documentation Of Past And Present Human Impacts On The Neotropical Forests Of Petén, Guatemala, Christopher Stephen Balzotti
Theses and Dissertations
Tropical forests provide important habitat for a tremendous diversity of plant and animal species. However, limitations in measuring and monitoring the structure and function of tropical forests has caused these systems to remain poorly understood. Remote-sensing technology has provided a powerful tool for quantification of structural patterns and associating these with resource use. Satellite and aerial platforms can be used to collect remotely sensed images of tropical forests that can be applied to ecological research and management. Chapter 1 of this article highlights the resources available for tropical forest remote sensing and presents a case-study that demonstrates its application to …
Developmental Contributions To Variation In Aspen Clones And The Influence Of Pre-Fire Succession Status On Aspen Regeneration Success, Eric A. Smith
Developmental Contributions To Variation In Aspen Clones And The Influence Of Pre-Fire Succession Status On Aspen Regeneration Success, Eric A. Smith
Theses and Dissertations
This thesis includes two studies: The first examined developmental changes that take place in the physiology of aspen (Populus tremuloides Michx.) and to characterize developmental influences on patterns of phenotypic trait variation among different aged ramets within the aspen clones. We surveyed eight clones, each with 8 distinct age classes ranging from 1 to 170 yrs in age. Using regression analysis we examined the relationships between ramet age and expression of functional phenotypes. Eight of the phenotypic traits demonstrated a non-linear relationship in which large changes in phenotype occurred in the early stages of ramet development and stabilized thereafter. …
Iowa Academy Of Science: The New Bulletin, V06n2-3, Summer-Fall 2010, Iowa Academy Of Science
Iowa Academy Of Science: The New Bulletin, V06n2-3, Summer-Fall 2010, Iowa Academy Of Science
New Bulletin
Inside This Issue:
--Message from the Executive Director
--Meet Iowa Department of Education Science Consultant Yvette McCulley
--2010 Iowa AmJAS Delegate, McKenna Templeton shares her experiences at AmJAS
--2011-2012 AAAS Science & Technology Policy Fellowships
--Environmental Literacy Needs and Partnerships Survey
--Experience Three Weeks in India: University of Iowa Winterim in India Program
--Academy awarded REAP-CEP Grants
--Announcements, Events & Deadlines
--Support The Academy
Wpa News 85 (2010), World Pheasant Association
Wpa News 85 (2010), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (Summer 2010), number 85
Published by the World Pheasant Association
Weeds In The Flower Garden: An Exploration Of Plagiarism In Graduate Students’ Research Proposals And Its Connection To Enculturation, Esl, And Contextual Factors, Joanna Gilmore, Denise Strickland, Briana Eileen Timmerman, Michelle Maher, David Feldon
Weeds In The Flower Garden: An Exploration Of Plagiarism In Graduate Students’ Research Proposals And Its Connection To Enculturation, Esl, And Contextual Factors, Joanna Gilmore, Denise Strickland, Briana Eileen Timmerman, Michelle Maher, David Feldon
Faculty Publications
Existing literature provides insight into the nature and extent of plagiarism amongst undergraduate students (e.g., Ellery, 2008; Parameswaran & Devi, 2006; Selwyn, 2008). Plagiarism amongst graduate students is relatively unstudied, however, and the existing data are largely based on self-reports. This study investigated the rates and potential causes of plagiarism amongst graduate students in master’s and doctoral programmes in science, technology, engineering, mathematics, and science or mathematics education by examining actual research proposals written by graduate students. Results indicate that plagiarism is a prevalent issue at each of the three university sites sampled and across all of the investigated disciplines. …
Prey Selection By Young Green Crabs (Carcinus Maenas), Rock Crabs (Cancer Irroratus) And American Lobsters (Homarus Americanus) In The Gulf Of Maine, Joseph Sungail
All Theses And Dissertations
The intertidal zone in the Gulf of Maine supports large populations of three species of decapods. Young green crabs (Carcinus maenas), rock crabs (Cancer irroratus) and American lobsters (Homarus americanus) co-exist in close proximity and forage on similar prey species. Competition for prey resources could have major implications for the populations of these predators. This experimental study focuses on determining the potential for interspecific competition between these decapods for prey resources. Young green crabs (25 - 35 mm carapace width), rock crabs (25 - 35 mm carapace width) and American lobsters (25 - 35 mm carapace length), were collected along …
High-Throughput Genomic/Proteomic Studies: Finding Structure And Meaning By Similarity, George Sidney Davidson
High-Throughput Genomic/Proteomic Studies: Finding Structure And Meaning By Similarity, George Sidney Davidson
Biology ETDs
The post-genomic challenge was to develop high-throughput technologies for measuring genome scale mRNA expression levels. Analyses of these data rely on computers in an unprecedented way to make the results accessible to researchers. My research in this area enabled the first compendium of microarray experiments for a multi-cellular eukaryote, Caenorhabditis elegans. Prior to this research approximately 6% of the C. elegans genome had been studied, and little was known about global expression patterns in this organism. Here I cluster data from 553 different microarray experiments and show that the results are stable, statistically significant and highly enriched for specific biological …
Comparison Of Microbial Communities On Roots, Ceilings And Floors Of Two Lava Tube Caves In New Mexico, Jessica R. Snider
Comparison Of Microbial Communities On Roots, Ceilings And Floors Of Two Lava Tube Caves In New Mexico, Jessica R. Snider
Biology ETDs
Lava tube caves possess a rich and patchy mosaic of nutrients and water that fosters a wide variety of microbial life. Water percolating past vegetation and through surface soils introduces dissolved carbon and nitrogen into caves. Roots provide even higher levels of carbon, nitrogen and microorganisms as they grow into the cave environment from surface vegetation. I hypothesized that this mosaic of nutrients and energy resources has a direct effect on the distribution and composition of microbial communities within caves. To test this hypothesis, I selected two lava tube caves in New Mexico, USA and identified six zones consisting of …
Parks, People And Pixels: Evaluating Landscape Effects Of An East African National Park On Its Surroundings, Jane Southworth, Joel N. Hartter, Michael W. Binford, Abraham Goldman, Colin A. Chapman, Lauren J. Chapman, Patrick Omeja, Elizabeth Binford
Parks, People And Pixels: Evaluating Landscape Effects Of An East African National Park On Its Surroundings, Jane Southworth, Joel N. Hartter, Michael W. Binford, Abraham Goldman, Colin A. Chapman, Lauren J. Chapman, Patrick Omeja, Elizabeth Binford
Geography
Landscapes surrounding protected areas, while still containing considerable biodiversity, have rapidly growing human populations and associated agricultural development in most of the developing world that tend to isolate them, potentially reducing their conservation value. Using field studies and multi-temporal Landsat imagery, we examine a forest park, Kibale National Park in western Uganda, its changes over time, and related land cover change in the surrounding landscape. We find Kibale has successfully defended its borders and prevents within-park deforestation and other land incursions, and has maintained tree cover throughout the time period of the study. Outside the park there was a significant …
Marine Bioinvasions And Climate Change, James T. Carlton, Sandra C. Lindstrom, Celia M. Smith, Jennifer E. Smith
Marine Bioinvasions And Climate Change, James T. Carlton, Sandra C. Lindstrom, Celia M. Smith, Jennifer E. Smith
National Invasive Species Council
BACKGROUND
Invasive species are second only to habitat destruction as the greatest cause of species endangerment and global biodiversity loss. Invasive species can cause severe and permanent damage to the ecosystems they invade. Consequences of invasion include competition with or predation upon native species, hybridization, carrying or supporting harmful pathogens and parasites that may affect wildlife and human health, disturbing ecosystem function through alteration of food webs and nutrient recycling rates, acting as ecosystem engineers and altering habitat structure, and degradation of the aesthetic quality of our natural resources. In many cases we may not fully know the native animals …
The Interpretation Of Habitat Preference Metrics Under Use–Availability Designs, Hawthorne L. Beyer, Daniel T. Haydon, Juan M. Morales, Jacqueline L. Frair, Mark Hebblewhite, Michael Mitchell, Jason Matthiopoulos
The Interpretation Of Habitat Preference Metrics Under Use–Availability Designs, Hawthorne L. Beyer, Daniel T. Haydon, Juan M. Morales, Jacqueline L. Frair, Mark Hebblewhite, Michael Mitchell, Jason Matthiopoulos
Biological Sciences Faculty Publications
Models of habitat preference are widely used to quantify animal–habitat relationships, to describe and predict differential space use by animals, and to identify habitat that is important to an animal (i.e. that is assumed to influence fitness). Quantifying habitat preference involves the statistical comparison of samples of habitat use and availability. Preference is therefore contingent upon both of these samples. The inferences that can be made from use versus availability designs are influenced by subjectivity in defining what is available to the animal, the problem of quantifying the accessibility of available resources and the framework in which preference is modelled. …
Ocean Currents Help Explain Population Genetic Structure, Crow White, Kimberly A. Selkoe, James Watson, David A. Siegel, Danielle C. Zacherl, Robert J. Toonen
Ocean Currents Help Explain Population Genetic Structure, Crow White, Kimberly A. Selkoe, James Watson, David A. Siegel, Danielle C. Zacherl, Robert J. Toonen
Biological Sciences
No abstract provided.
Recent Advances In The Climate Change Biology Literature: Describing The Whole Elephant, A. Townsend Peterson, Shaily Menon, Xingong Li
Recent Advances In The Climate Change Biology Literature: Describing The Whole Elephant, A. Townsend Peterson, Shaily Menon, Xingong Li
Peer Reviewed Publications
Climate change biology is seeing a wave of new contributions, which are reviewed herein. Contributions treat shifts in phenology and distribution, and both document past and forecast future effects. However, many of the current wave of contributions are observational and correlational, and few are experimental in nature, and too often a conceptual framework in which to contextualize the results is lacking. An additional gap is the lack of effective cross-linking among areas of research, for example, connection of sea-level rise and climate change implications for distributions of species, or evolutionary adaptation studies with distributional shift studies. Although numerous important contributions …
Biosecurity Principles: Protecting The Utah Turkey Industry, David Frame
Biosecurity Principles: Protecting The Utah Turkey Industry, David Frame
All Current Publications
This publication lists the diseases that are potentially a threat to the Utah turkey industry and how these diseases can best be avoided.
Fire: Ecology & Prevention, Justin R. Frey
Lidar Remote Sensing Variables Predict Breeding Habitat Of A Neotropical Migrant Bird, Scott J. Goetz, Daniel Steinberg, Matthew G. G. Betts, Richard T. Holmes
Lidar Remote Sensing Variables Predict Breeding Habitat Of A Neotropical Migrant Bird, Scott J. Goetz, Daniel Steinberg, Matthew G. G. Betts, Richard T. Holmes
Dartmouth Scholarship
A topic of recurring interest in ecological research is the degree to which vegetation structure influences the distribution and abundance of species. Here we test the applicability of remote sensing, particularly novel use of waveform lidar measurements, for quantifying the habitat heterogeneity of a contiguous northern hardwoods forest in the northeastern United States. We apply these results to predict the breeding habitat quality, an indicator of reproductive output of a well-studied Neotropical migrant songbird, the Black-throated Blue Warbler (Dendroica caerulescens). We found that using canopy vertical structure metrics provided unique information for models of habitat quality and spatial patterns of …
An Annotated List Of The Centipedes (Chilopoda) In The National Collection Of Arachnids, Instituto De Biología, Universidad Nacional Autónoma De México, Fabio Germán Cupul-Magaña
An Annotated List Of The Centipedes (Chilopoda) In The National Collection Of Arachnids, Instituto De Biología, Universidad Nacional Autónoma De México, Fabio Germán Cupul-Magaña
Insecta Mundi
The National Collection of Arachnids, Instituto de Biología, Universidad Nacional Autónoma de México (México City) houses 476 chilopod samples, of which 197 are determined to genus and/or species. These are documented here and represent several new state records. Topotypes of eight species of centipedes described by R. V. Chamberlin also documented.
Resumen. La Colección Nacional de Arácnidos, del Instituto de Biología de la Universidad Nacional Autónoma de México (Ciudad de México), resguarda 476 muestras de quilópodos, de los que 197 están determinadas a nivel de género y/o especie. Algunas de estas muestras corresponden a nuevos registros estatales. Se documentan los …
Vascular Plants Of The High Sierra San Pedro Mártir, Baja California, Mexico: An Annotated Checklist, Robert F. Thorne, Reid V. Moran, Richard A. Minnich
Vascular Plants Of The High Sierra San Pedro Mártir, Baja California, Mexico: An Annotated Checklist, Robert F. Thorne, Reid V. Moran, Richard A. Minnich
Aliso: A Journal of Systematic and Floristic Botany
The Sierra San Pedro Mártir (SSPM) is the highest mountain range in Baja California, Mexico, the summit of Picacho del Diablo peak attaining 3095 meters. An annotated checklist describes the vascular flora of the SSPM high country, defined here as above 1800 m. It comprises almost 500 species in 251 genera and 78 families. The high country is dominated by coniferous forest species known from montane California and Arizona whose southern ranges terminate in the SSPM. The annotated checklist identifies 453 species in 236 genera as indigenous, of which 23 species and one variety are endemic to the SSPM. Over …
The Challenge Of A Siberian Bluegrass (Poa) Phylogeny, Marina V. Olonova
The Challenge Of A Siberian Bluegrass (Poa) Phylogeny, Marina V. Olonova
Aliso: A Journal of Systematic and Floristic Botany
In Siberia, the bluegrass genus (Poa) comprises 43 species and 61 subspecies in 12 sections. Diverse modes of speciation, including polyploidy and hybridization, have led to reticulate evolution and adaptive radiation. Cladistic methods that ignore hybridization and reticulate evolution may not be appropriate for morphological data. The number of morphological characters suitable for bluegrass analysis is limited, a majority does not have clear adaptive significance, and the character states cannot be readily polarized, rendering phylogenetic reconstruction very difficult in this group. Other methods of estimating phylogenetic relationships should be used to test hypotheses about relationships and hybridization. Biochemical …
Helianthus Inexpectatus (Asteraceae), A Tetraploid Perennial New Species From Southern California, David J. Keil, Mark A. Elvin
Helianthus Inexpectatus (Asteraceae), A Tetraploid Perennial New Species From Southern California, David J. Keil, Mark A. Elvin
Aliso: A Journal of Systematic and Floristic Botany
Helianthus inexpectatus is described as a new species from the Newhall Ranch of northern Los Angeles County, California. It is a tetraploid (2n = 68) perennial that is morphologically similar to--—and intermediate in some characters between--—the diploid H. nuttallii and the hexaploid H. californicus.
Two New Combinations In Western North American Asteraceae, David J. Keil
Two New Combinations In Western North American Asteraceae, David J. Keil
Aliso: A Journal of Systematic and Floristic Botany
Two new combinations that will be used in the second edition of The Jepson Manual are proposed for western North American Asteraceae: Helianthus petiolaris subsp. canescens and Cirsium scariosum var. loncholepis.