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Articles 3451 - 3480 of 6144

Full-Text Articles in Biodiversity

Pasture Condition Guide For The Kimberley, Kathryn Ryan, Elizabeth Tierney, Paul Novelly, Robert Mccartney Oct 2013

Pasture Condition Guide For The Kimberley, Kathryn Ryan, Elizabeth Tierney, Paul Novelly, Robert Mccartney

Bulletins 4000 -

This interactive guide has been produced as a tool for assessing pasture condition over a range of pasture types in the Kimberley. A pasture type is a distinctive mix of plant species, soil type and landscape position. For example, the Mitchell Grass Alluvial Plain Pasture type is a mixture of Mitchell grasses and other species occurring on black soil alluvial plains. Pasture condition is an important factor affecting the potential of the rangelands for animal production and is a useful indicator for the sustainability of production.


Incorporating Satellite Derived Cloud Climatologies To Improve High Resolution Interpolation Of Daily Precipitation., Adam M. Wilson, Benoit Parmentier, Brian Mcgill, Rob Guralnick, Walter Jetz Sep 2013

Incorporating Satellite Derived Cloud Climatologies To Improve High Resolution Interpolation Of Daily Precipitation., Adam M. Wilson, Benoit Parmentier, Brian Mcgill, Rob Guralnick, Walter Jetz

Yale Day of Data

Conservation of biodiversity demands comprehension of evolutionary and ecological patterns and processes that occur over vast spatial and temporal scales. A central goal of ecology is to understand the factors that control the spatial distribution of species and this has become even more important in the face of climate change. However, at global scales there can be enormous uncertainty in environmental data used to model species distributions. Even ‘simple’ metrics such as mean annual precipitation are difficult to estimate in areas with few weather stations and available data sets do not quantify uncertainty in these surfaces. We are developing a …


The Tiger Genome And Comparative Analysis With Lion And Snow Leopard Genomes, Yun Sung Cho, Li Hu, Haolong Hou, Hang Lee, Jiaohui Xu, Soowhan Kwon, Sukhun Oh, Hak-Min Kim, Sungwoong Jho, Sangsoo Kim, Young-Ah Shin, Byung Chul Kim, Hyunmin Kim, Chang-Uk Kim, Shu-Jin Luo, Warren E. Johnson, Klaus-Peter Koepfli, A. Schmidt-Kunzel, Jason A. Turner, L. Marker, Cindy K. Harper, Susan M. Miller, Wilhelm Jacobs, Laura D. Bertola, Tae Hyung Kim, Sunghoon Lee, Qian Zhou, Hyun-Ju Jung, Xiao Xu, Priyvrat Gadhvi, Pengwei Xu, Yingqi Xiong, Yadan Luo, Shengkai Pan, Caiyun Gou, Xiuhui Chu, Jilin Zhang, Sanyang Liu, Jing He, Ying Chen, Linfeng Yang, Yulan Yang, Jiaju He, Sha Liu, Junyi Wang, Chul Hong Kim, Hwanjong Kwak, Jong-Soo Kim, Seungwoo Hwang, Junsu Ko, Chang-Bae Kim, Sangtae Kim, Damdin Bayarlkhagva, Woon Kee Paek, Seong-Jin Kim, Stephen J. O'Brien, Jun Wang, Jong Bhak Sep 2013

The Tiger Genome And Comparative Analysis With Lion And Snow Leopard Genomes, Yun Sung Cho, Li Hu, Haolong Hou, Hang Lee, Jiaohui Xu, Soowhan Kwon, Sukhun Oh, Hak-Min Kim, Sungwoong Jho, Sangsoo Kim, Young-Ah Shin, Byung Chul Kim, Hyunmin Kim, Chang-Uk Kim, Shu-Jin Luo, Warren E. Johnson, Klaus-Peter Koepfli, A. Schmidt-Kunzel, Jason A. Turner, L. Marker, Cindy K. Harper, Susan M. Miller, Wilhelm Jacobs, Laura D. Bertola, Tae Hyung Kim, Sunghoon Lee, Qian Zhou, Hyun-Ju Jung, Xiao Xu, Priyvrat Gadhvi, Pengwei Xu, Yingqi Xiong, Yadan Luo, Shengkai Pan, Caiyun Gou, Xiuhui Chu, Jilin Zhang, Sanyang Liu, Jing He, Ying Chen, Linfeng Yang, Yulan Yang, Jiaju He, Sha Liu, Junyi Wang, Chul Hong Kim, Hwanjong Kwak, Jong-Soo Kim, Seungwoo Hwang, Junsu Ko, Chang-Bae Kim, Sangtae Kim, Damdin Bayarlkhagva, Woon Kee Paek, Seong-Jin Kim, Stephen J. O'Brien, Jun Wang, Jong Bhak

Biology Faculty Articles

Tigers and their close relatives (Panthera) are some of the world’s most endangered species. Here we report the de novo assembly of an Amur tiger whole-genome sequence as well as the genomic sequences of a white Bengal tiger, African lion, white African lion and snow leopard. Through comparative genetic analyses of these genomes, we find genetic signatures that may reflect molecular adaptations consistent with the big cats’ hypercarnivorous diet and muscle strength. We report a snow leopard-specific genetic determinant in EGLN1 (Met39>Lys39), which is likely to be associated with adaptation to high altitude. We also detect a …


Four Decades Of Andean Timberline Migration And Implications For Biodiversity Loss With Climate Change, David A. Lutz, Rebecca L. Powell, Miles R. Silman Sep 2013

Four Decades Of Andean Timberline Migration And Implications For Biodiversity Loss With Climate Change, David A. Lutz, Rebecca L. Powell, Miles R. Silman

Dartmouth Scholarship

Rapid 21st-century climate change may lead to large population decreases and extinction in tropical montane cloud forest species in the Andes. While prior research has focused on species migrations per se, ecotones may respond to different environmental factors than species. Even if species can migrate in response to climate change, if ecotones do not they can function as hard barriers to species migrations, making ecotone migrations central to understanding species persistence under scenarios of climate change. We examined a 42-year span of aerial photographs and high resolution satellite imagery to calculate migration rates of timberline–the grassland-forest ecotone–inside and outside of …


Review Of Report On The “Status Of Nearshore Finfish Stocks In South-Western Western Australia: Australian Herring And Tailor”, Department Of Fisheries Sep 2013

Review Of Report On The “Status Of Nearshore Finfish Stocks In South-Western Western Australia: Australian Herring And Tailor”, Department Of Fisheries

Fisheries Occasional Publications

No abstract provided.


Food, Parasites, And Epidemiological Transitions: A Broad Perspective, Karl Reinhard, Luis Fernando Ferreira, Françoise Bouchet, L. Sianto, J. M.F. Dutra, A. Iniguez, Daniela Leles, M. Le Bailley, Martín Horacio Fugassa, Elisa Pucu, Adauto Araújo Sep 2013

Food, Parasites, And Epidemiological Transitions: A Broad Perspective, Karl Reinhard, Luis Fernando Ferreira, Françoise Bouchet, L. Sianto, J. M.F. Dutra, A. Iniguez, Daniela Leles, M. Le Bailley, Martín Horacio Fugassa, Elisa Pucu, Adauto Araújo

Karl Reinhard Publications

Pathoecology provides unique frameworks for understanding disease transmission in ancient populations. Analyses of Old and New World archaeological samples contribute empirically to our understanding of parasite infections. Combining archaeological and anthropological data, we gain insights about health, disease, and the way ancient people lived and interacted with each other and with their environments. Here we present Old and New World parasite evidence, emphasizing how such information reflects the different ways ancient populations exploited diverse environments and became infected with zoonotic parasites. It is clear that the most common intestinal helminthes (worm endoparasites) were already infecting ancient inhabitants of the New …


Traversing Swanton Road, 13th Ed., James A. West Aug 2013

Traversing Swanton Road, 13th Ed., James A. West

Academic, Government & Associated Organizational Research Resources

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


Leatherback Hatchling Fitness, Violet Campbell, Shane Morales, Kelly Stewart Aug 2013

Leatherback Hatchling Fitness, Violet Campbell, Shane Morales, Kelly Stewart

STAR Program Research Presentations

Leatherback hatchling fitness on land is essential for their success in entering the ocean without being predated. Two ways fitness on land may be measured are by how fast hatchlings crawl as well as how fast their righting responses are when they are flipped onto their carapaces. Hatchlings from certain nests have slower righting response times along with slower crawl times, both of which would increase the odds of predation and hinder the success of hatchlings reaching the ocean.

Hatchling crawling speed was determined by timing 12 randomly selected hatchlings from each nest to crawl a distance of two meters. …


A Glyptosaurine Lizard From The Eocene (Late Uintan) Of San Diego, California, And Implications For Glyptosaurine Evolution And Biogeography, David Moscato Aug 2013

A Glyptosaurine Lizard From The Eocene (Late Uintan) Of San Diego, California, And Implications For Glyptosaurine Evolution And Biogeography, David Moscato

Electronic Theses and Dissertations

Glyptosaurinae is an extinct subfamily of lizards of the family Anguidae. Glyptosaurine lizards are known exclusively from the Paleogene of North America and Eurasia, reaching their peak of diversity and distribution in the Eocene. In North America these lizards are largely restricted to the intermontane basins along the Rocky Mountain range, with only sparse, indeterminately-identified skeletal elements known from outside of this region. Glyptosaurine lizards are split into two tribes: the monophyletic Glyptosaurini and paraphyletic “Melanosaurini”. Within Glyptosaurini, the most common and widespread genus is Glyptosaurus. In this study I describe a new specimen assignable to G. sylvestris, …


Systematics, Climate, And Ecology Of Fossil And Extant Nyssa (Nyssaceae, Cornales) And Implications Of Nyssa Grayensis Sp. Nov. From The Gray Fossil Site, Northeast Tennessee, Nathan R. Noll Aug 2013

Systematics, Climate, And Ecology Of Fossil And Extant Nyssa (Nyssaceae, Cornales) And Implications Of Nyssa Grayensis Sp. Nov. From The Gray Fossil Site, Northeast Tennessee, Nathan R. Noll

Electronic Theses and Dissertations

The Late Hemphillian (latest Miocene or earliest Pliocene, 7-4.5 Ma) Gray Fossil Site in northeastern Tennessee is interpreted to represent a lacustrine paleokarst fed by a river or stream. This research focuses on the morphological and systematic relations of Nyssa endocarps (fruit pits) from the fossil site to extinct and extant Nyssa species. A combination of metric and nonmetric traits allows recognition of a new species: Nyssa grayensis sp. nov. This fossil species shares the most similarities with the extant Nyssa ogeche Bartram ex Marshall from southeast North America and the Eocene fossil Nyssa eolignitica Berry from western Tennessee. Affinities …


Oral Presentation Abstracts By Day And Symposium From The 11th International Mammalogical Congress (Belfast, Northern Ireland : August 11-16, 2013), International Mammalogical Congress Aug 2013

Oral Presentation Abstracts By Day And Symposium From The 11th International Mammalogical Congress (Belfast, Northern Ireland : August 11-16, 2013), International Mammalogical Congress

University of Nebraska State Museum: Mammalogy Papers

About IMC

IMC returns to Europe after 24 years at a time when IUCN has identified 25% mammal species as at risk. As a venue to share concerns, concepts and techniques among professional mammalogists, IMC has never been more relevant. IMC11 Organising Committee hopes to welcome colleagues with diverse interests in the biology, conservation and management of mammals from throughout the world. IMC11 will encourage active participation in the Congress program by maximising time for spoken papers and posters offered by delegates.

Queen's University Belfast is the venue and are pleased to host the 11th International Mammalogical Congress on behalf …


Comparative Microbial Community Composition From Secondary Carbonate (Moonmilk) Deposits: Implications For The Cansiliella Servadeii Cave Hygropetric Food Web, Annette Summers Engel, Maurizio G. Paoletti, Mattia Beggio, Luca Dorigo, Alberto Pamio, Tiziano Gomiero, Claudio Furlan, Mauro Brilli, Angelo Leandro Dreon, Roberto Bertoni, Andrea Squartini Jul 2013

Comparative Microbial Community Composition From Secondary Carbonate (Moonmilk) Deposits: Implications For The Cansiliella Servadeii Cave Hygropetric Food Web, Annette Summers Engel, Maurizio G. Paoletti, Mattia Beggio, Luca Dorigo, Alberto Pamio, Tiziano Gomiero, Claudio Furlan, Mauro Brilli, Angelo Leandro Dreon, Roberto Bertoni, Andrea Squartini

International Journal of Speleology

The microbial diversity of moonmilk, a hydrated calcium carbonate speleothem, was evaluated from two Italian caves to provide context for the food web of highly-specialized troglobitic beetles, Cansiliella spp. (Leptodirinae), with distinctive carbon and nitrogen isotope values indicative of a novel food source. The moonmilk and associated percolating waters had low to no extractable chlorophyll, with an average organic C:N ratio of 9, indicating limited allochthonous input and a significant contribution from microbial biomass. The biomass from moonmilk was estimated to be ~104 micro- and meiofaunal individuals per m2 and ~107 microbial cells/ml. Betaproteobacteria dominated the …


The Birds Of Nebraska, Revised Edition 2013, Paul A. Johnsgard Jul 2013

The Birds Of Nebraska, Revised Edition 2013, Paul A. Johnsgard

Zea E-Books Collection

This summary of the birds of Nebraska has been restricted to those species that have been convincingly reported at least once in Nebraska from historic time to the present. It has also been modified in its current revision to conform very closely in that regard to the most recent Nebraska Ornithologists’ Union’s “Official List of the Birds of Nebraska” (Brogie, 2010; NOU Records Committee, 2011 and annual updates). The N.O.U.’s official state list of birds (455 species as of 2013, including 329 “regular” species, 42 of “casual” occurrence, 68 accidentals, and six extinct or extirpated species) is based on actual …


Wolf Reintroduction Into Yellowstone National Park, Erin Quartley Jul 2013

Wolf Reintroduction Into Yellowstone National Park, Erin Quartley

The Review: A Journal of Undergraduate Student Research

In lieu of an abstract, below is the essay's first paragraph.

" ... My, what big eyes you have grandmother. 'All the better to see you with, my dear.' My, what big teeth you have grandmother. 'All the better to eat you with, my dear. ' ... " The story of Little Red Riding Hood is one that commonly surfaces when people talk about and picture wolves. The negative image that has been placed upon wolves originates from folklore, fairy tales, and Hollywood. This same falsified image is one that has greatly contributed to the past and present plight of …


Birds And Birding In Wyoming’S Bighorn Mountains Region, Jacqueline L. Canterbury, Paul A, Johnsgard, Helen F. Downing Jul 2013

Birds And Birding In Wyoming’S Bighorn Mountains Region, Jacqueline L. Canterbury, Paul A, Johnsgard, Helen F. Downing

Zea E-Books Collection

The Bighorn Mountains consist of a relatively well-isolated north-south mountain range in north-central Wyoming that had their origins during the early Cenozoic era, 50-65 million years ago. The present-day Bighorn range is more than 100 miles in length and has a maximum elevation of 13,167 feet (Cloud Peak), only slightly less than the highest peak in Wyoming (Gannett Peak, at 13,804 feet). The mountains are flanked to the west by the Bighorn River basin, and to the east by the Powder River basin, both of which support only semi-desert vegetation dominated by sagebrush. Elevations of the Powder River basin near …


Systematics And Distributions Of The Genera Cyrtusa Erichson, Ecarinosphaerula Hatch, Isoplastus Horn, Liocyrtusa Daffner, Lionothus Brown, And Zeadolopus Broun Of The United States And Canada (Coleoptera: Leiodidae: Leiodinae: Leiodini), Stewart B. Peck, Joyce Cook Jun 2013

Systematics And Distributions Of The Genera Cyrtusa Erichson, Ecarinosphaerula Hatch, Isoplastus Horn, Liocyrtusa Daffner, Lionothus Brown, And Zeadolopus Broun Of The United States And Canada (Coleoptera: Leiodidae: Leiodinae: Leiodini), Stewart B. Peck, Joyce Cook

Insecta Mundi

The following genera of Leiodini (Coleoptera: Leiodidae: Leiodinae) of the continental United States and Canada are reviewed: Cyrtusa Erichson, with two species; Isoplastus Horn, with two species (one new); Liocyrtusa Daffner, with three species; Lionothus Brown, with five species (three new), and Zeadolopus Broun, with four species (all genera are in the “Cyrtusa genus group”) and Ecarinosphaerula Hatch, with one named species (in the “Leiodes genus group”). The new species are Isoplastus floridanus Peck and Cook of Florida; Lionothus bidentatus Peck and Cook of Texas and Oklahoma, Lionothus exiguus Peck and Cook of Florida and Texas, and Lionothus …


A Floristic Analysis And Comparison Of Plant Communities In Harlan County, Nebraska, Naomi D. Hastings, Steven J. Rothenberger Jun 2013

A Floristic Analysis And Comparison Of Plant Communities In Harlan County, Nebraska, Naomi D. Hastings, Steven J. Rothenberger

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Historically, the Republican River Valley in Harlan County, Nebraska, has been extensively explored, but the county flora has continually been under-represented and has been found to lack records for plants that are considered common. During the 2009 growing season, a taxonomic study and comparison of 3 different sites in Harlan County was made. Site #1 was pastureland and Sites #2 and #3 were both riparian, located on the north side of the Republican River. Collections were pressed, dried, identified, and deposited in the University of Nebraska at Kearney Herbarium (NEBK). Forty-eight new county records were verified, in­cluding cutleaf-cucumber (Cyclanthera …


Estudios Científicos En El Estado De Hidalgo Y Zonas Aledañas, Volumen Ii, Griselda Pulido-Flores, Scott Monks Jun 2013

Estudios Científicos En El Estado De Hidalgo Y Zonas Aledañas, Volumen Ii, Griselda Pulido-Flores, Scott Monks

Zea E-Books Collection

Los 16 capítulos que conforman este libro son una contribución al conocimiento de la biodiversidad y conservación de los recursos naturales en el estado de Hidalgo, México.

Se aborda el derecho de propiedad intelectual en la biodiversidad, citando algunos ejemplos de México. Así mismo, se presenta un estudio de la biodiversidad y distribución de la herpetofauna en cuatro tipos de vegetación. Desde el punto de vista de la helmintología se presentan dos estudios de los helmintos parásitos de vertebrados silvestres; con nuevos registros de hospederos y localidades de algunas especies de helmintos para Hidalgo. También, se aborda el uso de …


Contributions Of Stocked And Naturally Reproduced Rainbow Trout In The Deerfield Reservoir System, Jacob L. Davis, Jerry W. Wilhite, Greg Simpson, Michael E. Barnes, Kaite N. Bertrand, David W. Willis Jun 2013

Contributions Of Stocked And Naturally Reproduced Rainbow Trout In The Deerfield Reservoir System, Jacob L. Davis, Jerry W. Wilhite, Greg Simpson, Michael E. Barnes, Kaite N. Bertrand, David W. Willis

The Prairie Naturalist

Deerfield Reservoir in the Black Hills of South Dakota and its tributary system are managed as hatchery supplemented rainbow trout (Oncorhynchus mykiss) fisheries. Three genetically unique strains of rainbow trout (Shasta, Erwin and McConaughy) are stocked into the system. Recently, juvenile rainbow trout of unknown origin were collected in the tributary system above Deerfield Reservoir, indicating potential natural reproduction. Understanding the genetic origins and ability of these rainbow trout to contribute to the fishery is essential in determining the proper management strategy for these waters. Our objectives were to 1) evaluate the genetic origins of potentially naturally reproduced rainbow trout …


Distribution Of Burrowing Owls In East- Central South Dakota, Jiill A. Shaffer, Jason P. Thiele Jun 2013

Distribution Of Burrowing Owls In East- Central South Dakota, Jiill A. Shaffer, Jason P. Thiele

The Prairie Naturalist

Western burrowing owl (Athene cunicularia hypugaea) populations have declined across much of western North America, particularly at the northern and eastern edges of the species’ breeding range (Martell et al. 2001, Murphy et al. 2001, Shyry et al. 2001, Skeel et al. 2001, Klute et al. 2003). In South Dakota, the burrowing owl is a summer resident that historically was relatively common throughout the state, but its range has decreased in recent decades, especially in the eastern half of the state (Whitney et al. 1978, South Dakota Ornithologists’ Union [SDOU] 1991, Peterson 1995). Tallman et al. (2002) described the species …


Notes: Nesting Patterns Of Red-Tailed Hawks And Great-Horned Owls In South-Cen- Tral Kansas, William Langley Jun 2013

Notes: Nesting Patterns Of Red-Tailed Hawks And Great-Horned Owls In South-Cen- Tral Kansas, William Langley

The Prairie Naturalist

Red-tailed hawks (Buteo jamaicensis) and great-horned owls (Bubo virginianus) can influence the nesting behavior of each other through direct competition for nesting sites. For instance, owls begin nesting before hawks and, thus, can use nests from the previous year and prevent hawks from occupying those sites (Orians and Kuhl- man 1956, Gilmer et al. 1983, Minor et al. 1993). However, both species sometimes kill the nestlings of the other (Craig- head and Craighead 1956, Bosakowski et al. 1989).

The objective of my study was to investigate nesting patterns of these two raptors at the edge of the tallgrass prairie over …


Research Notes Vs. Research Articles, Christopher N. Jacques Jun 2013

Research Notes Vs. Research Articles, Christopher N. Jacques

The Prairie Naturalist

Greetings GPNSS members! I hope this email finds you well, winding down another academic year, and looking forward to the summer field season. Warm temperatures, peak foliage, and heightened anticipation of the start of another field season are upon us following a long winter season and unusually wet spring for many of us across the Great Plains. Here in westcentral Illinois, wild turkeys are gobbling, neotropical migrants are singing and establishing breeding territories, and white-tailed deer are within days of giving birth to the next generation of fawns. Granted, there are many outdoor activities to participate in, though oppressive heat …


Dna From Feces And Museum Specimens Confirms A First State Record Bird, Alec R. Lindsay Ph. D., Skye C. Haas May 2013

Dna From Feces And Museum Specimens Confirms A First State Record Bird, Alec R. Lindsay Ph. D., Skye C. Haas

Faculty Works

In October 2005, a vagrant kingbird (Aves: Tyrannus sp.) appeared in Michigan’s Upper Peninsula, nearly 2000 km from the northern limit of its usual range. Using mitochondrial DNA obtained from a fecal sample deposited by the bird and mitochondrial DNA isolated from museum reference specimens, the species iden- tity of this bird was definitively confirmed as a Tropical Kingbird (T. melancholicus) rather than a Couch’s Kingbird (T. couchii). This is the first time DNA evidence has been used to establish a state bird record, and one of the few studies of any type to successfully use avian feces for DNA …


Species Boundaries And Biogeography Of East African Torrent Frogs Of The Genus Petropedetes (Amphibia: Anura: Petropeditidae), Simon P. Loader, F. Sara Ceccarelli, Mark Wilkinson, Michele Menegon, Jean Mariaux, Rafael O. De Sá, Et Al. May 2013

Species Boundaries And Biogeography Of East African Torrent Frogs Of The Genus Petropedetes (Amphibia: Anura: Petropeditidae), Simon P. Loader, F. Sara Ceccarelli, Mark Wilkinson, Michele Menegon, Jean Mariaux, Rafael O. De Sá, Et Al.

Biology Faculty Publications

Based on morphology there are currently three described East African species of torrent frogs belonging to the tropical African genus Petropedetes (P. dutoiti, P. martiennseni and P. yakusini). Taxonomic uncertainties are evident within this group: a putative new species reported from the Nguru Mountains and the species P. yakusini have a fragmented distribution across the Southern Tanzanian highlands. We conducted a molecular systematic study, sampling populations of East African petropedetids occurring in the mountains of Tanzania (P. martiennseni and P. yakusini), to investigate species boundaries and biogeography. Data provide evidence for the recognition of …


Brown Algal Diversity In Bermuda Revealed Using Molecular Tools, Alyssa L. Rogers May 2013

Brown Algal Diversity In Bermuda Revealed Using Molecular Tools, Alyssa L. Rogers

Senior Honors Projects

For nearly 60 years there has been very little investigation of the marine algal flora in Bermuda, which is an ideal location for a biodiversity assessment due to its size and location. Residing approximately 1000km off the coast of North Carolina, Bermuda is influenced by the cool water from the north during winter and by the warm water eddies that spin off the Gulf Stream for the much of the other seasons. The Bermuda Seaweed Project aims to extensively survey the marine algal flora in Bermuda and generate morphological and molecular data for all three major groups of macroalgae present. …


Advocacy For Marine Management: Contributions To A Policy Advocacy Initiative In The Maldives, Neal Collins May 2013

Advocacy For Marine Management: Contributions To A Policy Advocacy Initiative In The Maldives, Neal Collins

Capstone Collection

On June 5, 2009 a 42-­‐km2 area of coral reef situated in the Alif Dhaalu (South Ari) atoll of the Republic of Maldives was designated the South Ari Atoll Marine Protected Area (S.A. MPA) due to a globally significant whale shark aggregation site. The whale shark is notorious for its gargantuan size and docile nature, which has led to a burgeoning tourist industry that gives people the opportunity to swim with the gentle giants in tropical sites such as the Maldives. The S.A. MPA receives tens of thousands of visitors a year that engage in whale shark excursions, however, there …


Differences In Population Structure Estimated Within Maternally- And Paternally-Inherited Forms Of Mitochondria In Lampsilis Siliquoidea (Bivalvia: Unionidae), Robert A. Krebs, W. Calvin Borden, Na'tasha M. Evans, F. Paul Doerder May 2013

Differences In Population Structure Estimated Within Maternally- And Paternally-Inherited Forms Of Mitochondria In Lampsilis Siliquoidea (Bivalvia: Unionidae), Robert A. Krebs, W. Calvin Borden, Na'tasha M. Evans, F. Paul Doerder

Biological, Geological, and Environmental Faculty Publications

Mussels in several orders possess two separate mitochondrial lineages: a standard female-inherited form and one inherited only through males. This system of doubly uniparental inheritance (DUI) for mitochondrial genes provides an opportunity to compare the population structure of gene-lineages passed either mother-to-daughter or father-to-son. In the present study, we contrast variation in the male and female haplotype lineages of the American freshwater mussel species, Lampsilis siliquoidea (sometimes called Lampsilis radiata luteola), throughout the Lake Erie, Ohio River, and upper Mississippi River watersheds, and contrast variation with the sequences obtained for the related species/subspecies Lampsilis radiata radiata from Maine. The …


Section Abstracts: Natural History And Biodiversity May 2013

Section Abstracts: Natural History And Biodiversity

Virginia Journal of Science

Abstracts of the Natural History and Biodiversity Section for the 91st Annual Virginia Journal of Science Meeting, May 2013


Aerobic Degradation Of Α-, Β-, Γ-Hexachlorocyclohexane By Narragansett Bay Bacterioplankton, Ian M. Rambo May 2013

Aerobic Degradation Of Α-, Β-, Γ-Hexachlorocyclohexane By Narragansett Bay Bacterioplankton, Ian M. Rambo

Senior Honors Projects

Hexachlorocyclohexanes (HCHs) are a family of chlorinated organic compounds that were previously used as agricultural insecticides. HCHs are recognized as persistent organic pollutants due to their toxicity, recalcitrant properties, and tendency to bioaccumulate in food webs. Although HCH was first synthesized in 1825, its use was not widespread until the discovery of the insecticidal activity of the γ-HCH isomer in 1942. γ-HCH and its toxic waste isomers α-HCH and β-HCH were banned from production and use by the United Nations in 2009, yet these chemicals still present environmental problems due to their persistence in soils and surface waters. HCHs continue …


Integrating, Developing, And Testing Methods To Generate More Cohesive Approaches To Biogeographic Inference, Mallory Elizabeth Eckstut May 2013

Integrating, Developing, And Testing Methods To Generate More Cohesive Approaches To Biogeographic Inference, Mallory Elizabeth Eckstut

UNLV Theses, Dissertations, Professional Papers, and Capstones

As a fundamental component of the developing discipline of conservation biogeography, broadscale analyses of biotic assembly and disassembly across multiple temporal and spatial scales provide an enhanced understanding of how geologic transformations and climate oscillations have shaped extant patterns of biodiversity. As with any scientific field, there are limitations in the case of biogeographic historical reconstructions. Historical reconstructions are only as robust as the theoretical underpinnings of the methods of reconstruction (including data collection, quality, analysis, and interpretation). Nevertheless, historical reconstructions of species distributions can help inform our understanding of how species respond to environmental change.

My dissertation takes a …