Open Access. Powered by Scholars. Published by Universities.®

Biology Commons™

Open Access. Powered by Scholars. Published by Universities.®

2011

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 631 - 660 of 1064

Full-Text Articles in Biology

Succession, Scott Meiners, Steward Pickett Jan 2011

Succession, Scott Meiners, Steward Pickett

Faculty Research & Creative Activity

Succession in a strict sense refers to the recovery and revegetation of an area following a disturbance such as the cessation of agriculture, the retreat of a glacier, or an intense forest fi re. Succession is a special case of vegetation dynamics, although many early ecologists referred to all vegetation change as succession. Succession includes a series of compositional and structural changes, often in a directional manner. The common occurrence of natural disturbances coupled with the extent of human activity on the planet makes succession one of the most ubiquitous ecological processes. Because invasion is a crucial feature of succession, …

Go to article

Snp-Based Mapping Of Crossover Recombination In Caenorhabditis Elegans, Grace C. Bazan, Kenneth J. Hillers Jan 2011

Snp-Based Mapping Of Crossover Recombination In Caenorhabditis Elegans, Grace C. Bazan, Kenneth J. Hillers

Biological Sciences

Caenorhabditis elegans is an important experimental organism for the study of recombination during meiosis. Here, we provide methods for the use of single-nucleotide polymorph isms (SNPs) for the study of crossing over in C. elegans.

Go to article

The Control Of Marine Biofouling On Xerogel Surfaces With Nanometer-Scale Topography, Nikhil Gunari, Lenora H. Brewer, Stephanie M. Bennett, Anastasiya Sokolova, Nadine D. Kraut, John A. Finlay, Anne E. Meyer, Gilbert C. Walker, Dean E. Wendt, Maureen E. Callow, James A. Callow, Frank V. Bright, Michael R. Detty Jan 2011

The Control Of Marine Biofouling On Xerogel Surfaces With Nanometer-Scale Topography, Nikhil Gunari, Lenora H. Brewer, Stephanie M. Bennett, Anastasiya Sokolova, Nadine D. Kraut, John A. Finlay, Anne E. Meyer, Gilbert C. Walker, Dean E. Wendt, Maureen E. Callow, James A. Callow, Frank V. Bright, Michael R. Detty

Biological Sciences

Mixtures of n-octadecyltrimethoxysilane (C18, 1-5 mole-%), n-octyltriethoxysilane (C8) and tetraethoxysilane (TEOS) gave xerogel surfaces of varying topography. The 1:49:50 C18/C8/TEOS xerogel formed 100-400-nm-wide, 2-7-nm deep pores by AFM while coatings with ≥3% C18 were free of such features. Segregation of the coating into alkane-rich and alkane-deficient regions in the 1:49:50 C18/C8/TEOS xerogel was observed by IR microscopy. Immersion in ASW for 48 h gave no statistical difference in surface energy for the 1:49:50 C18/C8/TEOS xerogel and a significant increase for the 50:50 C8/TEOS xerogel. Settlement of barnacle cyprids and removal of juvenile barnacles, settlement of zoospores of the …

Go to article

Observed And Modeled Bio-Optical, Bioluminescent, And Physical Properties During A Coastal Upwelling Event In Monterey Bay, California, Igor Shulman, Mark A. Moline, Bradley Penta, Stephanie Anderson, Matthew Oliver, Steven H.D. Haddock Jan 2011

Observed And Modeled Bio-Optical, Bioluminescent, And Physical Properties During A Coastal Upwelling Event In Monterey Bay, California, Igor Shulman, Mark A. Moline, Bradley Penta, Stephanie Anderson, Matthew Oliver, Steven H.D. Haddock

Biological Sciences

During spring and summer time, coastal upwelling influences circulation and ecosystem dynamics of the Monterey Bay, California, which is recognized as a National Marine Sanctuary. Observations of physical, bio‐optical properties (including bioluminescence) together with results from dynamical biochemical and bioluminescence models are used to interpret the development of the upwelling event during August 2003 in Monterey Bay, California. Observations and the biochemical model show the development of a phytoplankton bloom in the southern portion of Monterey Bay. Model results show an increase of nutrients in the southern portion of the bay, where nutrient‐rich water masses are brought in by the …

Go to article

Physical Habitat And Social Conditions Across A Coral Reef Shape Spatial Patterns Of Intraspecific Behavioral Variation In A Demersal Fish, Meagan N. Schrandt, Kristin M. Hardy, Kaitlin M. Johnson, Sean C. Lema Jan 2011

Physical Habitat And Social Conditions Across A Coral Reef Shape Spatial Patterns Of Intraspecific Behavioral Variation In A Demersal Fish, Meagan N. Schrandt, Kristin M. Hardy, Kaitlin M. Johnson, Sean C. Lema

Biological Sciences

As coral reef ecosystems decline in health worldwide, reef-associated fishes are being impacted by changes to their coral reef habitats. While previous studies have shown coral reef structure to affect the demography of reef fishes, changes in reef conditions may also impact the behavior of reef fishes as they cope with altered habitats. In this study, we examined spatial patterns of intraspecific behavioral variation in the bicolor damselfish (Stegastes partitus) across the fringing reefs of Curaçao (Caribbean Sea), and explored how this behavioral variation associated with physical and social conditions on the reef. Principal components analysis (PCA) condensed …

Go to article

The Deadly Effects Of ‘‘Nonlethal’’ Predators, Shannon J. Mccauley, Locke Rowe, Marie-Josee Fortin Jan 2011

The Deadly Effects Of ‘‘Nonlethal’’ Predators, Shannon J. Mccauley, Locke Rowe, Marie-Josee Fortin

Biological Sciences

Nonconsumptive predator effects are widespread and include plasticity as well as general stress responses. Caged predators are often used to estimate nonconsumptive effects, and numerous studies have focused on the larval stages of animals with complex life cycles. However, few of these studies test whether nonconsumptive predator effects, including stress responses, are exclusively sublethal. Nor have they assessed whether these effects extend beyond the larval stage, affecting success during stressful life-history transitions such as metamorphosis. We conducted experiments with larvae of a dragonfly (Leucorrhinia intacta) that exhibits predator-induced plasticity to assess whether the mere presence of predators affects …

Go to article

Lichens Of The Callahan Mine, A Copper- And Zinc-Enriched Superfund Site In Brooksville, Maine, U.S.A., Nishanta Rajakaruna, Tanner B. Harris, Stephen R. Clayden, Alison C. Dibble, Fred C. Olday Jan 2011

Lichens Of The Callahan Mine, A Copper- And Zinc-Enriched Superfund Site In Brooksville, Maine, U.S.A., Nishanta Rajakaruna, Tanner B. Harris, Stephen R. Clayden, Alison C. Dibble, Fred C. Olday

Biological Sciences

Metal-enriched habitats often harbor physiologically distinct biotas able to tolerate and accumulate toxic metals. Plants and lichens that accumulate metals have served as effective indicators of ecosystem pollution. Whereas the diversity of metal-tolerant lichens has been well documented globally, the literature of metal-tolerant lichen communities for eastern North America is limited. We examined the lichen flora of the Callahan Mine, a Cu-, Pb-, and Zn-enriched superfund site in Brooksville, Hancock County, Maine, U.S.A. Through collections along transects across metal-contaminated areas of the mine, we documented 76 species of lichens and related fungi. Fifty species were saxicolous, 26 were terricolous. Forty-three …

Go to article

Environmental Proteomics: Changes In The Proteome Of Marine Organisms In Response To Environmental Stress, Pollutants, Infection, Symbiosis, And Development, Lars Tomanek Jan 2011

Environmental Proteomics: Changes In The Proteome Of Marine Organisms In Response To Environmental Stress, Pollutants, Infection, Symbiosis, And Development, Lars Tomanek

Biological Sciences

Environmental proteomics, the study of changes in the abundance of proteins and their post-translational modifications, has become a powerful tool for generating hypotheses regarding how the environment affects the biology of marine organisms. Proteomics discovers hitherto unknown cellulareffects of environmental stressors such as changes in thermal, osmotic, and anaerobic conditions. Proteomic analyses have advanced the characterization of the biological effects of pollutants and identified comprehensive and pollutant-specific sets of biomarkers, especially those highlighting post-translational modifications. Proteomic analyses of infected organisms have highlighted the broader changes occurring during immune responses and how the same pathways are attenuated during the maintenance of …

Go to article

Advertisement Call And Distribution Of The Treefrogs Hyla Chrysoscelis And Hyla Versicolor In Virginia, Joseph C. Mitchell, Christopher A. Pague Jan 2011

Advertisement Call And Distribution Of The Treefrogs Hyla Chrysoscelis And Hyla Versicolor In Virginia, Joseph C. Mitchell, Christopher A. Pague

Virginia Journal of Science

The gray treefrog complex consists of two sibling species that are indistinguishable morphologically, the diploid Hyla chrysoscelis and the tetraploid Hyla versicolor. Identification is possible in the field only by audio recognition of male advertisement call trill rates (pulses/second). During 1979-1983 we evaluated taped calls of these two species taken from 89 populations from throughout Virginia to map their respective ranges and to evaluate differences in call parameters. Hyla chrysoscelis occurs in the Coastal Plain, eastern and southern Piedmont, and in southwestern Virginia. Hyla versicoloroccurs in the Piedmont, Blue Ridge, and Ridge and Valley regions south to Wythe …

Go to article

Changes In Habitat Heterogeneity Alter Marine Sessile Benthic Communities, Pablo Munguia, Richard W. Osman, John Hamilton, Robert B. Whitlatch, Roman Zajac Jan 2011

Changes In Habitat Heterogeneity Alter Marine Sessile Benthic Communities, Pablo Munguia, Richard W. Osman, John Hamilton, Robert B. Whitlatch, Roman Zajac

Biology and Environmental Science Faculty Publications

Habitat heterogeneity is considered an important mechanism influencing diversity patterns in spatially structured habitats. However, spatial heterogeneity is not static and it can change along temporal scales. These changes, whether gradual or rapid, have the potential of forcing species extinctions or facilitating the introduction of nonnative species. Here, we present modeling results that show how changes in spatial heterogeneity over several generations can produce strong changes in benthic species composition residing in eastern Long Island Sound, USA. For many benthic species, hard substrate is a limiting resource which can vary in availability among different coastal areas. We modeled gradual changes …

Go to article

An Exotic Species Is The Favorite Prey Of A Native Enemy, Yiming Li, Zunwei Ke, Supen Wang, Geoffrey R. Smith, Xuan Liu Jan 2011

An Exotic Species Is The Favorite Prey Of A Native Enemy, Yiming Li, Zunwei Ke, Supen Wang, Geoffrey R. Smith, Xuan Liu

Faculty Publications

No abstract provided.

Go to article

Effect Of Substrate Composition And Alignment On Corneal Cell Phenotype, Donna Phu '09, Lindsay S. Wray '08, Robert V. Warren '10, Richard C. Haskell, Elizabeth J. Orwin Jan 2011

Effect Of Substrate Composition And Alignment On Corneal Cell Phenotype, Donna Phu '09, Lindsay S. Wray '08, Robert V. Warren '10, Richard C. Haskell, Elizabeth J. Orwin

All HMC Faculty Publications and Research

Corneal blindness is a significant problem treated primarily by corneal transplants. Donor tissue supply is low, creating a growing need for an alternative. A tissue-engineered cornea made from patient-derived cells and biopolymer scaffold materials would be widely accessible to all patients and would alleviate the need for donor sources. Previous work in this lab led to a method for electrospinning type I collagen scaffolds for culturing corneal fibroblasts ex vivo that mimics the microenvironment in the native cornea. This electrospun scaffold is composed of small-diameter, aligned collagen fibers. In this study, we investigate the effect of scaffold nanostructure and composition …

Go to article

A New Genus Of Soft Coral Of The Family Alcyoniidae (Cnidaria, Octocorallia) With Re-Description Of A New Combination And Description Of A New Species, Catherine S. Mcfadden, Yehuda Benayahu Jan 2011

A New Genus Of Soft Coral Of The Family Alcyoniidae (Cnidaria, Octocorallia) With Re-Description Of A New Combination And Description Of A New Species, Catherine S. Mcfadden, Yehuda Benayahu

All HMC Faculty Publications and Research

A new genus, Aldersladum (family Alcyoniidae), is established to accommodate a previously described species, Effl atounaria sodwanae Benayahu, 1993 (family Xeniidae) from Sodwana Bay, South Africa that was wrongly assigned to the latter genus. Th is species is redescribed and a second new species, A. jengi from Penghu Is., Taiwan, is described. Th e diagnostic features of the new genus include the presence of only figure-eight shaped platelets in all parts of the colony, thus differentiating it from all known genera of the Alcyoniidae. Based on examination of additional material from other localities, the zoogeographical distribution of the genus is …

Go to article

Subaerial Freshwater Stromatolites In Deer Cave, Sarawak – A Unique Geobiological Cave Formation, Joyce Lundberg, Donald A. Mcfarlane Jan 2011

Subaerial Freshwater Stromatolites In Deer Cave, Sarawak – A Unique Geobiological Cave Formation, Joyce Lundberg, Donald A. Mcfarlane

WM Keck Science Faculty Papers

A suite of distinctive freshwater subaerial phosphatic stromatolites is developed close to the northeastern entrance of Deer Cave, Gunung Mulu National Park, Sarawak, Borneo, in conditions of very low light but ample supply of nutrients from guano. These stromatolites are not particulate; they are composed of alternating layers of more porous and more dense amorphous hydroxylapatite. This biomineralization occurs as moulds of coccoid (the majority) and filamentous (less abundant) cyanobacteria. Mineralization occurs at a pH of ~ 7.0 in the extracellular sheaths and in micro-domains of varying carbonate content in the surrounding mucus of the biofilm. The most recent surfaces …

Go to article

Managing Soil Nitrogen To Restore Annual Grass Infested Communities: An Effective Strategy Or Incomplete Framework?, Rebecca Drenovsky Jan 2011

Managing Soil Nitrogen To Restore Annual Grass Infested Communities: An Effective Strategy Or Incomplete Framework?, Rebecca Drenovsky

Biology

Theoretical and empirical work has established a positive relationship between resource availability and habitat invasibility. For nonnative invasive annual grasses, similar to other invasive species, invader success has been tied most often to increased nitrogen (N) availability. These observations have led to the logical assumption that managing soils for low N availability will facilitate restoration of invasive plant-dominated systems. Although invasive annual grasses pose a serious threat to a number of perennial-dominated ecosystems worldwide, there has been no quantitative synthesis evaluating the degree to which soil N management may facilitate restoration efforts. We used meta-analysis to evaluate the degree to …

Go to article

Acute Synaptic Activity Causes Differential Mirna Expression In The Drosophila Melanogaster Larval Central Nervous System, Robert Ian Sand Jan 2011

Acute Synaptic Activity Causes Differential Mirna Expression In The Drosophila Melanogaster Larval Central Nervous System, Robert Ian Sand

Electronic Theses and Dissertations

The primary goal of this thesis was to determine if spaced synaptic stimulation induced the differential expression of microRNAs (miRNAs) in the Drosophila melanogaster central nervous system (CNS). Prior to attaining this goal, we needed to identify and validate a spaced stimulation paradigm that could induce the formation of new synaptic growth at a model synapse, the larval neuromuscular junction (NMJ). Both Channelrhodopsin- and high potassium-based stimulation paradigms adapted from (Ataman, et al. 2008) were tested. Once validation of these paradigms was complete, we sought to characterize the miRNA expression profile of the larval CNS by miRNA array. Following attainment …

Go to article

Epoxi: Comet 103p/Hartley 2 Observations From A Worldwide Campaign ; Astrophysical Journal Letters, K. Meech, M. A'Hearn, J. Adams, P. Bacci, J. Bai, L. Barrera, M. Battelino, J. Bauer, E. Becklin, B. Bhatt, N. Biver, D. Bockelee-Morvan, D. Bodewits, H. Bohnhardt, J. Boissier, B. Bonev, W. Borghini, J. Brucato, E. Bryssinck, M. Buie, H. Canovas, D. Castellano, S. Charnley, W. Chen, P. Chiang, Y. Choi, D. Christian, Y. Chuang, Anita Cochran, P. Colom, M. Combi, I. Coulson, J. Crovisier, N. Russo, K. Dennerl, K. Dewahl, M. Disanti, M. Facchini, T. Farnham, Y. Fernandez, H. Floren, U. Frisk, T. Fujiyoshi, R. Furusho, T. Fuse, G. Galli, D. Garcia-Hernandez, A. Gersch, Z. Getu Jan 2011

Epoxi: Comet 103p/Hartley 2 Observations From A Worldwide Campaign ; Astrophysical Journal Letters, K. Meech, M. A'Hearn, J. Adams, P. Bacci, J. Bai, L. Barrera, M. Battelino, J. Bauer, E. Becklin, B. Bhatt, N. Biver, D. Bockelee-Morvan, D. Bodewits, H. Bohnhardt, J. Boissier, B. Bonev, W. Borghini, J. Brucato, E. Bryssinck, M. Buie, H. Canovas, D. Castellano, S. Charnley, W. Chen, P. Chiang, Y. Choi, D. Christian, Y. Chuang, Anita Cochran, P. Colom, M. Combi, I. Coulson, J. Crovisier, N. Russo, K. Dennerl, K. Dewahl, M. Disanti, M. Facchini, T. Farnham, Y. Fernandez, H. Floren, U. Frisk, T. Fujiyoshi, R. Furusho, T. Fuse, G. Galli, D. Garcia-Hernandez, A. Gersch, Z. Getu

Physics Faculty Works

Earth- and space-based observations provide synergistic information for space mission encounters by providing data over longer timescales, at different wavelengths and using techniques that are impossible with an in situ flyby. We report here such observations in support of the EPOXI spacecraft flyby of comet 103P/Hartley 2. The nucleus is small and dark, and exhibited a very rapidly changing rotation period. Prior to the onset of activity, the period was ~16.4 hr. Starting in 2010 August the period changed from 16.6 hr to near 19 hr in December. With respect to dust composition, most volatiles and carbon and nitrogen isotope …

Go to article

"The Status And Distribution Of Freshwater Crabs [Central Africa]" , Neil Cumberlidge Jan 2011

"The Status And Distribution Of Freshwater Crabs [Central Africa]" , Neil Cumberlidge

Book Sections/Chapters

No abstract provided.

Go to article

"Freshwater Crabs Of Africa: Biodiversity, Distribution, And Conservation." , Neil Cumberlidge Jan 2011

"Freshwater Crabs Of Africa: Biodiversity, Distribution, And Conservation." , Neil Cumberlidge

Book Sections/Chapters

No abstract provided.

Go to article

"The Status And Distribution Of Freshwater Crabs [Indo-Burma Region Of Asia]" , Neil Cumberlidge, Peter Kl Ng, Darren Cj Yeo Jan 2011

"The Status And Distribution Of Freshwater Crabs [Indo-Burma Region Of Asia]" , Neil Cumberlidge, Peter Kl Ng, Darren Cj Yeo

Book Sections/Chapters

No abstract provided.

Go to article

What Happens When Life Goes Wild, Aldemaro Romero Jr. Jan 2011

What Happens When Life Goes Wild, Aldemaro Romero Jr.

Publications and Research

No abstract provided.

Go to article

Modulation Of A Gef Switch: Autoinhibition Of The Intrinsic Guanine Nucleotide Exchange Activity Of P115-Rhogef, Zhe Chen, Liang Guo, Stephen R. Sprang, Paul C. Sternweis Jan 2011

Modulation Of A Gef Switch: Autoinhibition Of The Intrinsic Guanine Nucleotide Exchange Activity Of P115-Rhogef, Zhe Chen, Liang Guo, Stephen R. Sprang, Paul C. Sternweis

Biological Sciences Faculty Publications

p115-RhoGEF (p115) belongs to the family of RGS-containing guanine nucleotide exchange factors for Rho GTPases (RGS-RhoGEFs) that are activated by G12 class heterotrimeric G protein α subunits. All RGS-RhoGEFs possess tandemly linked Dbl-homology (DH) and plekstrin-homology (PH) domains, which bind and catalyze the exchange of GDP for GTP on RhoA. We have identified that the linker region connecting the N-terminal RGS-homology (RH) domain and the DH domain inhibits the intrinsic guanine nucleotide exchange (GEF) activity of p115, and determined the crystal structures of the DH/PH domains in the presence or absence of the inhibitory linker region. An N-terminal extension of …

Go to article

Use Of Microcalorimetry To Determine The Costs And Benefits To Pseudomonas Putida Strain Kt2440 Of Harboring Cadmium Efflux Genes, Sean M. Gibbons, Kevin Feris, Michele A. Mcguirl, Sergio E. Morales, Anu Hynninen, Philip W. Ramsey, James E. Gannon Jan 2011

Use Of Microcalorimetry To Determine The Costs And Benefits To Pseudomonas Putida Strain Kt2440 Of Harboring Cadmium Efflux Genes, Sean M. Gibbons, Kevin Feris, Michele A. Mcguirl, Sergio E. Morales, Anu Hynninen, Philip W. Ramsey, James E. Gannon

Biological Sciences Faculty Publications

A novel microcalorimetric approach was used to analyze the responses of a metal-tolerant soil bacterium (Pseudomonas putida strain KT2440) to metal resistance gene deletions in cadmium-amended media. As hypothesized, under cadmium stress, the wild-type strain benefited from the resistance genes by entering the exponential growth phase earlier than two knockout strains. In the absence of cadmium, strain KT1, carrying a deletion in the main component (czcA1) of a Cd/Zn chemiosmotic efflux transporter (CzcCBA1), grew more efficiently than the wild type and released similar to 700 kJ (per mole of biomass carbon) less heat than the wild-type strain, showing the energetic …

Go to article

Dynamics Of Gene Duplication In The Genomes Of Chlorophyll D-Producing Cyanobacteria: Implications For The Ecological Niche, Scott R. Miller, A. Michelle Wood, Robert E. Blankenship, Maria Kim, Steven Ferriera Jan 2011

Dynamics Of Gene Duplication In The Genomes Of Chlorophyll D-Producing Cyanobacteria: Implications For The Ecological Niche, Scott R. Miller, A. Michelle Wood, Robert E. Blankenship, Maria Kim, Steven Ferriera

Biological Sciences Faculty Publications

Gene duplication may be an important mechanism for the evolution of new functions and for the adaptive modulation of gene expression via dosage effects. Here, we analyzed the fate of gene duplicates for two strains of a novel group of cyanobacteria (genus Acaryochloris) that produces the far-red light absorbing chlorophyll d as its main photosynthetic pigment. The genomes of both strains contain an unusually high number of gene duplicates for bacteria. As has been observed for eukaryotic genomes, we find that the demography of gene duplicates can be well modeled by a birth-death process. Most duplicated Acaryochloris genes are of …

Go to article

Faking Giants: The Evolution Of High Prey Clearance Rates In Jellyfishes, José Luis Acuña, Ángel López-Urrutia, Sean Colin Jan 2011

Faking Giants: The Evolution Of High Prey Clearance Rates In Jellyfishes, José Luis Acuña, Ángel López-Urrutia, Sean Colin

Arts & Sciences Faculty Publications

Jellyfishes have functionally replaced several overexploited commercial stocks of planktivorous fishes. This is paradoxical, because they use a primitive prey capture mechanism requiring direct contact with the prey, whereas fishes use more efficient visual detection. We have compiled published data to show that, in spite of their primitive life-style, jellyfishes exhibit similar instantaneous prey clearance and respiration rates as their fish competitors and similar potential for growth and reproduction. To achieve this production, they have evolved large, water-laden bodies that increase prey contact rates. Although larger bodies are less efficient for swimming, optimization analysis reveals that large collectors are advantageous …

Go to article

Quantitatively Measuring In Situ Flows Using A Self-Contained Underwater Velocimetry Apparatus (Scuva), Kakani Katija, Sean Colin, John H. Costello, John O. Dabiri Jan 2011

Quantitatively Measuring In Situ Flows Using A Self-Contained Underwater Velocimetry Apparatus (Scuva), Kakani Katija, Sean Colin, John H. Costello, John O. Dabiri

Arts & Sciences Faculty Publications

The ability to directly measure velocity fields in a fluid environment is necessary to provide empirical data for studies in fields as diverse as oceanography, ecology, biology, and fluid mechanics. Field measurements introduce practical challenges such as environmental conditions, animal availability, and the need for field-compatible measurement techniques. To avoid these challenges, scientists typically use controlled laboratory environments to study animal-fluid interactions. However, it is reasonable to question whether one can extrapolate natural behavior (i.e., that which occurs in the field) from laboratory measurements. Therefore, in situ quantitative flow measurements are needed to accurately describe animal swimming in their natural …

Go to article

New England Faculty And College Students Differ In Their Views About Evolution, Creationism, Intelligent Design, And Religiosity, Guillermo Paz-Y-Miño C, Avelina Espinosa Jan 2011

New England Faculty And College Students Differ In Their Views About Evolution, Creationism, Intelligent Design, And Religiosity, Guillermo Paz-Y-Miño C, Avelina Espinosa

Arts & Sciences Faculty Publications

Public acceptance of evolution in Northeastern U.S. is the highest nationwide, only 59%. Here, we compare perspectives about evolution, creationism, intelligent design (ID), and religiosity between highly educated New England faculty (n = 244; 90% Ph.D. holders in 40 disciplines at 35 colleges/universities) and college students from public secular (n = 161), private secular (n = 298), and religious (n = 185) institutions: 94/3% of the faculty vs. 64/14% of the students admitted to accepting evolution openly and/or privately, and 82/18% of the faculty vs. 58/42% of the students thought that evolution is definitely true or probably true, respectively. Only …

Go to article

A Proposal For A Common Minimal Topic Set In Introductory Biology Courses For Majors, Eileen Gregory, Jane P. Ellis, Amanda N. Orenstein Jan 2011

A Proposal For A Common Minimal Topic Set In Introductory Biology Courses For Majors, Eileen Gregory, Jane P. Ellis, Amanda N. Orenstein

Faculty Publications

A common complaint among instructors of introductory biology courses is the course covers too much material. Without a national consensus specifying which topics are essential, instructors are leery of excluding material. A survey was administered to Two-Year College and Four-Year College and University section members of the National Association of Biology Teachers (NABT) to identify the topics and skills college and university biology instructors believe students completing introductory biology should know and comprehend. Analysis identified a strong consensus for twenty topics and seven skills that should be included in all year-long introductory college biology course sequences for majors.

Go to article

Adaptive Responses Of Branchial Morphology To Hypoxia In The Neotropical Electric Fish Genus Brachyhypopomus, Leilani B. Pathak Jan 2011

Adaptive Responses Of Branchial Morphology To Hypoxia In The Neotropical Electric Fish Genus Brachyhypopomus, Leilani B. Pathak

Electronic Theses and Dissertations

Many tropical aquatic environments worldwide are characterized by intermittent or prolonged hypoxia (low dissolved oxygen). Nevertheless, many tropical freshwater fishes are able to inhabit these challenging environments via a range of morphological, physiological and behavioral adaptations. Brachyhypopomus is a diverse genus of weakly electric fishes represented by 28 known species distributed from Panama to Argentina. 17 species are restricted to permanently normoxic habitats (blackwater rivers and terra firme streams), eight species are restricted to seasonally or perennially hypoxic habitats (whitewater floodplains of large tropical rivers or permanent swampy habitats), and three species are eurytopic (occur in both seasonally hypoxic and …

Go to article

Molecular Identification Of Novel Genes Associated With Atherosclerosis, Stephen R. Archacki Jan 2011

Molecular Identification Of Novel Genes Associated With Atherosclerosis, Stephen R. Archacki

ETD Archive

No abstract provided.

Go to article

First Prev Next Last