Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
-
- Receptor Species Modeling (4)
- Density (3)
- Invasive plants (3)
- Mating behavior (3)
- Postcopulatory mate guarding (3)
-
- Sex ratio (3)
- Sexual selection (3)
- Biogeography (2)
- Community turnover (2)
- Detrended Correspondence Analysis (2)
- Fall migration (2)
- Foraging ecology (2)
- GIS (2)
- Landbirds (2)
- Yucatan Peninsula (2)
- Allosteric Regulation (Respiratory Pigments) (1)
- Aluminum (1)
- Cell Stabilization (Preconditioning) (1)
- Cyprinodon tularos (1)
- Ecologic risk assessment (1)
- Ecological assessment (1)
- Exposure (1)
- Geographic information system (1)
- Glyphosate treatment (1)
- Habitat (1)
- Home range (1)
- Irrigation (1)
- Landscape metrics (1)
- Lonicera maacki (1)
- Monte Carlo simulation (1)
- Publication
- Publication Type
Articles 1 - 30 of 36
Full-Text Articles in Biology
Seed And Seedling Ecology Of Acer Saccharum And Acer Platanoides: A Contrast Between Native And Exotic Congeners, Scott J. Meiners
Seed And Seedling Ecology Of Acer Saccharum And Acer Platanoides: A Contrast Between Native And Exotic Congeners, Scott J. Meiners
Scott J. Meiners
The exotic tree, Acer platanoides, is increasing in forests of northeastern North America, largely within the range of its native congener, Acer saccharum. A combination of field and controlled experiments was used on seeds and seedlings of these congeners to determine species characteristics that may be contributing to these floristic changes. Acer platanoides experienced lower rates of seed predation than A. saccharum in field experiments. Differences in the dispersal and allocation characteristics of the two species were small and not likely to explain the relative success of A. platanoides. Greenhouse- grown seedlings of A. platanoides were much larger than those …
The Relationship Between Community Diversity And Exotic Plants: Cause Or Consequence Of Invasion?, Scott J. Meiners, Mary L. Cadenasso
The Relationship Between Community Diversity And Exotic Plants: Cause Or Consequence Of Invasion?, Scott J. Meiners, Mary L. Cadenasso
Scott J. Meiners
Invasion ecology has suffered from the artificial separation of invasibility and impact processes in understanding the ationship between diversity and plant invasion. By studying these independently functioning stages of invasion in concert, we can gain great insight into the biological causes and consequences of invasions, and develop crucial information for the generation of adequate management strategies. Our conceptual framework provides a structure to synthesize the current body of research, suggests research needed to fill the gaps in understanding and to organize results from future research. The framework is a powerful tool to guide ecological understanding of the relationship between invasion …
Vegetation And Flora Of American Beech Woods Nature Preserve, Clark County, Illinois, Bob Edgin, Gordon C. Tucker, John E. Ebinger
Vegetation And Flora Of American Beech Woods Nature Preserve, Clark County, Illinois, Bob Edgin, Gordon C. Tucker, John E. Ebinger
Gordon C. Tucker
No abstract provided.
The Social Environment Affects Mate Guarding Behavior In Japanese Beetles, Popillia Japonica, Yoriko Saeki, Kipp C. Kruse, Paul Switzer
The Social Environment Affects Mate Guarding Behavior In Japanese Beetles, Popillia Japonica, Yoriko Saeki, Kipp C. Kruse, Paul Switzer
Paul V. Switzer
The effect of the social environment on post-copulatory mate guarding duration in Japanese beetles, (Popillia japonica Newman), was examined in a laboratory experiment. The mate guarding durations of beetles in different sex ratios and densities were observed for 10 hours. Guarding duration was longer when females were larger, suggesting the presence of ‘cryptic’ male mate choice. Densities, but not sex ratio, affected the duration of guarding bouts, with males guarding for longer at higher densities. This result implies that males increase their guarding duration under conditions in which their female may be likely to be encountered by other males. The …
Molecular Identification Of Anopheles Spp. (Diptera: Culicidae) In The Chapare/Carrasco Valleys, Cochabamba, Bolivia, Corey Brelsfoard
Molecular Identification Of Anopheles Spp. (Diptera: Culicidae) In The Chapare/Carrasco Valleys, Cochabamba, Bolivia, Corey Brelsfoard
Masters Theses
No abstract provided.
Landscape Effects On Stream Water Chemistry And Benthic Productivity In An Agricultural Watershed, Shari E. Fanta
Landscape Effects On Stream Water Chemistry And Benthic Productivity In An Agricultural Watershed, Shari E. Fanta
Masters Theses
No abstract provided.
Resilience Of An Amphibian Community Following The Removal Of Introduced Fish, Leroy J. Walston
Resilience Of An Amphibian Community Following The Removal Of Introduced Fish, Leroy J. Walston
Masters Theses
No abstract provided.
The Relationship Between Community Diversity And Exotic Plants: Cause Or Consequence Of Invasion?, Scott Meiners, Mary Cadenasso
The Relationship Between Community Diversity And Exotic Plants: Cause Or Consequence Of Invasion?, Scott Meiners, Mary Cadenasso
Faculty Research & Creative Activity
Invasion ecology has suffered from the artificial separation of invasibility and impact processes in understanding the ationship between diversity and plant invasion. By studying these independently functioning stages of invasion in concert, we can gain great insight into the biological causes and consequences of invasions, and develop crucial information for the generation of adequate management strategies. Our conceptual framework provides a structure to synthesize the current body of research, suggests research needed to fill the gaps in understanding and to organize results from future research. The framework is a powerful tool to guide ecological understanding of the relationship between invasion …
Temporal Patterns In Fall Migrant Communities In Yucatan, Mexico, Jill Deppe, John Rotenberry
Temporal Patterns In Fall Migrant Communities In Yucatan, Mexico, Jill Deppe, John Rotenberry
Faculty Research & Creative Activity
We quantified temporal turnover in the composition of fall migrant landbird communities along the northern coast of the Yucatan Peninsula using Detrended Correspondence Analysis. The presence of winter residents of many migrant species at the site prevented turnover from being complete. However, early and late season transient communities shared few, if any, species in common. Point-count surveys showed greater compositional change than net surveys that included winter residents. The rate of species turnover was generally slow until the middle of the season, when it reached a maximum, and decreased again toward the end of the season as species composition began …
Trehalose Loading Through The Mitochondrial Permeability Transition Pore Enhances Desiccation Tolerance In Rat Liver Mitochondria, Xiang-Hong Liu, Alptekin Aksan, Michael A. Menze, Steven C. Hand, Mehmet Toner
Trehalose Loading Through The Mitochondrial Permeability Transition Pore Enhances Desiccation Tolerance In Rat Liver Mitochondria, Xiang-Hong Liu, Alptekin Aksan, Michael A. Menze, Steven C. Hand, Mehmet Toner
Faculty Research & Creative Activity
Trehalose has extensively been used to improve the desiccation tolerance of mammalian cells. To test whether trehalose improves desiccation tolerance of mammalian mitochondria, we introduced trehalose into the matrix of isolated rat liver mitochondria by reversibly permeabilizing the inner membrane using the mitochondrial permeability transition pore (MPTP). Measurement of the trehalose concentration inside mitochondria using high perfOrmance liquid chromatography showed that the sugar permeated rapidly into the matrix upon opening the MPTP. The concentration of intra matrix trehalose reached 0.29 mmoVmg protein (-190 mM) in 5 min. Mitochondria, with and without trehalose loaded into the matrix, were desiccated in a …
Allosteric Models For Multimeric Proteins: Oxygen-Linked Effector Binding In Hemocyanin, Michael A. Menze, Nadja Hellman, Heinz Decker, Manfred K. Grieshaber
Allosteric Models For Multimeric Proteins: Oxygen-Linked Effector Binding In Hemocyanin, Michael A. Menze, Nadja Hellman, Heinz Decker, Manfred K. Grieshaber
Faculty Research & Creative Activity
In many crustaceans, changing concentrations of several low molecular weight compounds modulates hemocyanin oxygen binding, resulting in lower or higher oxygen affinities of the pigment. The nonphysiological effector caffeine and the physiological modulator urate, the latter accumulating in the hemolymph of the lobster Homarus Vulgaris during hypoxia, increase hemocyanin oxygen affinity and decrease cooperativity of oxygen binding. To derive a model that describes the mechanism of allosteric interaction between hemocyanin and oxygen in the presence of urate or caffeine, studies of oxygen, urate, and caffeine binding to hemocyanin were performed. Exposure of lobster hemocyanin to various pH values between 7.25 …
The Development Of A Spatially Explicit Model To Estimate, Karen F. Gaines, C. Shane Boring, Dwayne E. Porter
The Development Of A Spatially Explicit Model To Estimate, Karen F. Gaines, C. Shane Boring, Dwayne E. Porter
Faculty Research & Creative Activity
A spatially explicit model of raccoon (Procyon lotor) distribution for the U.S. Department of Energy’s (DOE) Savannah River Site (SRS) in west-central South Carolina was developed using data from a raccoon radio-telemetry study and visualized within a Geographic Information System (GIS). An inductive approach was employed to develop three sub-models using the ecological requirements of raccoons studied in the following habitats: (1) man-made reservoirs, (2) bottomland hardwood/ riverine systems, and (3) isolated wetland systems. Logistic regression was used to derive probabilistic resource selection functions using habitat compositional data and landscape metrics. The final distribution model provides a spatially explicit probability …
A Spatially Explicit Model Of The Wild Hog For Ecological Risk Assessment Activities At The Department Of Energy's Savannah River Site, Karen F. Gaines, Dwayne E. Porter, Tracy Punshon, I. Lehr Brisbin Jr.
A Spatially Explicit Model Of The Wild Hog For Ecological Risk Assessment Activities At The Department Of Energy's Savannah River Site, Karen F. Gaines, Dwayne E. Porter, Tracy Punshon, I. Lehr Brisbin Jr.
Faculty Research & Creative Activity
In North America, wild hogs (Sus scrofa) are both sought after as prime game and despised due to their detrimental impacts to the environment from their digging and rooting behavior. They are also a potentially useful indicator species for environmental health for both ecological- and human-based risk assessments. An inductive approach was used to develop probabilistic resource selection models using logistic regression to quantify the likelihood of hogs being in any area of the Department of Energy’s 805 km2 Savannah River Site (SRS) in west-central South Carolina. These models were derived by using available SRS hog hunt data from 1993–2000 …
Rodents As Receptor Species At A Tritium, Angel Kelsey-Wall, John C. Seaman, Charles H. Jegoe, Cham E. Dallas, Karen F. Gaines
Rodents As Receptor Species At A Tritium, Angel Kelsey-Wall, John C. Seaman, Charles H. Jegoe, Cham E. Dallas, Karen F. Gaines
Faculty Research & Creative Activity
New methods are being employed on the Department of Energy’s Savannah River Site to deal with the disposal of tritium, including the irrigation of a hardwood/pine forest with tritiated water from an intercepted contaminant plume to reduce concentrations of tritium outcropping into Fourmile Branch, a tributary of the Savannah River. The use of this system has proven to be an effective means of tritium disposal. To evaluate the impact of this activity on terrestrial biota, rodent species were captured on the tritium disposal site and a control site during two trapping seasons in order to assess tritium exposure resulting from …
Influence Of Stem Cutting And Glyphosate Treatment Of Lonicera Maackii, An Exotic And Invasive Species, On Stem Regrowth And Native Species Richness, Henry R. Owen, A. L. Mcdonnell, A. M. Mounteer, B. L. Todd
Influence Of Stem Cutting And Glyphosate Treatment Of Lonicera Maackii, An Exotic And Invasive Species, On Stem Regrowth And Native Species Richness, Henry R. Owen, A. L. Mcdonnell, A. M. Mounteer, B. L. Todd
Faculty Research & Creative Activity
Lonicera maackii (Rupr.) Herder (Caprifoliaceae), Amur honeysuckle, is an exotic and invasive species in the United States that has quickly overtaken disturbed habitats in the eastern and midwestern United States, as well as in Ontario, Canada. A reduction of light due to its dense canopy, extended growing season compared to native species, and production of numerous basal sprouts allow L. maackii to outcompete its native counterparts. Eradication of this species can be difficult and time-consuming. This research was undertaken to identify how L. maackii influences species diversity and species re-establishment and to determine an efficient and effective eradication method. A …
Seed And Seedling Ecology Of Acer Saccharum And Acer Platanoides: A Contrast Between Native And Exotic Congeners, Scott J. Meiners
Seed And Seedling Ecology Of Acer Saccharum And Acer Platanoides: A Contrast Between Native And Exotic Congeners, Scott J. Meiners
Faculty Research & Creative Activity
The exotic tree, Acer platanoides, is increasing in forests of northeastern North America, largely within the range of its native congener, Acer saccharum. A combination of field and controlled experiments was used on seeds and seedlings of these congeners to determine species characteristics that may be contributing to these floristic changes. Acer platanoides experienced lower rates of seed predation than A. saccharum in field experiments. Differences in the dispersal and allocation characteristics of the two species were small and not likely to explain the relative success of A. platanoides. Greenhouse- grown seedlings of A. platanoides were much larger than those …
Vegetation And Flora Of American Beech Woods Nature Preserve, Clark County, Illinois, Bob Edgin, Gordon C. Tucker, John E. Ebinger
Vegetation And Flora Of American Beech Woods Nature Preserve, Clark County, Illinois, Bob Edgin, Gordon C. Tucker, John E. Ebinger
Faculty Research & Creative Activity
No abstract provided.
The Social Environment Affects Mate Guarding Behavior In Japanese Beetles, Popillia Japonica, Yoriko Saeki, Kipp Kruse, Paul Switzer
The Social Environment Affects Mate Guarding Behavior In Japanese Beetles, Popillia Japonica, Yoriko Saeki, Kipp Kruse, Paul Switzer
Faculty Research & Creative Activity
The effect of the social environment on post-copulatory mate guarding duration in Japanese beetles, (Popillia japonica Newman), was examined in a laboratory experiment. The mate guarding durations of beetles in different sex ratios and densities were observed for 10 hours. Guarding duration was longer when females were larger, suggesting the presence of ‘cryptic’ male mate choice. Densities, but not sex ratio, affected the duration of guarding bouts, with males guarding for longer at higher densities. This result implies that males increase their guarding duration under conditions in which their female may be likely to be encountered by other males. The …
Habitat And Exposure Modelling For Ecological Risk Assessment: A, T. Edwin Chow, Karen F. Gaines, Michael E. Hodgson, Machelle D. Wilson
Habitat And Exposure Modelling For Ecological Risk Assessment: A, T. Edwin Chow, Karen F. Gaines, Michael E. Hodgson, Machelle D. Wilson
Faculty Research & Creative Activity
Contamination has a dramatic impact on the health of ecosystem and habitat suitability for the inhabited flora and fauna. The Environmental Protection Agency (EPA) mandates an ecological risk assessment (ERA) that evaluates the potential adverse impact of any anthropogenic activities on the ecosystem (US Environmental Protection Agency, 1997. Ecological Risk Assessment Guidance for Superfund: Process for Designing and Conducting Ecological Risk Assessment. EPA/630/R-021011, Washington, DC). This study provides a general framework and specific procedures to predict the contaminant exposure of midsized mammals using a geographical information system (GIS)-based Monte Carlo simulation model. The model was applied to the raccoons (Procyon …
The Relationship Between Community Diversity And Exotic Plants: Cause Or Consequence Of Invasion?, Scott J. Meiners, Mary L. Cadenasso
The Relationship Between Community Diversity And Exotic Plants: Cause Or Consequence Of Invasion?, Scott J. Meiners, Mary L. Cadenasso
Faculty Research & Creative Activity
Invasion ecology has suffered from the artificial separation of invasibility and impact processes in understanding the ationship between diversity and plant invasion. By studying these independently functioning stages of invasion in concert, we can gain great insight into the biological causes and consequences of invasions, and develop crucial information for the generation of adequate management strategies. Our conceptual framework provides a structure to synthesize the current body of research, suggests research needed to fill the gaps in understanding and to organize results from future research. The framework is a powerful tool to guide ecological understanding of the relationship between invasion …
Morphological Divergence Of Native And Recently Established Populations Of White Sands Pupfish (Cyprinodon Tularosa), Michael L. Collyer, James M. Novak, Craig A. Stockwell
Morphological Divergence Of Native And Recently Established Populations Of White Sands Pupfish (Cyprinodon Tularosa), Michael L. Collyer, James M. Novak, Craig A. Stockwell
Faculty Research & Creative Activity
We used landmark-based geometric morphometric methods to describe patterns of body shape variation and shape covariation with size among populations of the threatened White Sands Pupfish (Cyprinodon tularosa), a species that occurs in dissimilar aquatic habitats. White Sands Pupfish populations include two genetically distinct, native populations that have been historically isolated in Salt Creek, a saline river, and Malpais Spring, a brackish spring. In addition, two populations were established approximately 30 years before this study by translocation of fish from Salt Creek to Lost River (a saline river) and Mound Spring (a brackish spring). We found significant body shape variation …
Vegetation And Flora Of American Beech Woods Nature Preserve, Clark County, Illinois, Bob Edgin, Gordon Tucker, John Ebinger
Vegetation And Flora Of American Beech Woods Nature Preserve, Clark County, Illinois, Bob Edgin, Gordon Tucker, John Ebinger
Faculty Research & Creative Activity
No abstract provided.
Seed And Seedling Ecology Of Acer Saccharum And Acer Platanoides: A Contrast Between Native And Exotic Congeners, Scott Meiners
Seed And Seedling Ecology Of Acer Saccharum And Acer Platanoides: A Contrast Between Native And Exotic Congeners, Scott Meiners
Faculty Research & Creative Activity
The exotic tree, Acer platanoides, is increasing in forests of northeastern North America, largely within the range of its native congener, Acer saccharum. A combination of field and controlled experiments was used on seeds and seedlings of these congeners to determine species characteristics that may be contributing to these floristic changes. Acer platanoides experienced lower rates of seed predation than A. saccharum in field experiments. Differences in the dispersal and allocation characteristics of the two species were small and not likely to explain the relative success of A. platanoides. Greenhouse- grown seedlings of A. platanoides were much larger than those …
Seasonal Movements And Habitat Selection Of Raccoons In A Grassland-Agricultural Landscape, Roberta K. Newbury
Seasonal Movements And Habitat Selection Of Raccoons In A Grassland-Agricultural Landscape, Roberta K. Newbury
Masters Theses
No abstract provided.
Land-Use Changes And Stream Productivity: Effects On Stream Communities And Food-Chain Length, Christopher A. North
Land-Use Changes And Stream Productivity: Effects On Stream Communities And Food-Chain Length, Christopher A. North
Masters Theses
No abstract provided.
Benthic Algal Community Structure And Bioaccumulation Of Mercury In A Coastal Watershed, Lucie Novoveska
Benthic Algal Community Structure And Bioaccumulation Of Mercury In A Coastal Watershed, Lucie Novoveska
Masters Theses
No abstract provided.
Molecular Identification, Distribution And Ecology Of Larval Malaria Mosquitoes In Carrasco/Chapare Valleys, Bolivia, Reema Paudel
Molecular Identification, Distribution And Ecology Of Larval Malaria Mosquitoes In Carrasco/Chapare Valleys, Bolivia, Reema Paudel
Masters Theses
No abstract provided.
Plant Species Turnover As A Mechanism Of Community Change In Response To Biotic And Abiotic Perturbation, Kathryn Anne Yurkonis
Plant Species Turnover As A Mechanism Of Community Change In Response To Biotic And Abiotic Perturbation, Kathryn Anne Yurkonis
Masters Theses
No abstract provided.
Temporal Patterns In Fall Migrant Communities In Yucatan, Mexico, Jill L. Deppe, John T. Rotenberry
Temporal Patterns In Fall Migrant Communities In Yucatan, Mexico, Jill L. Deppe, John T. Rotenberry
Faculty Research & Creative Activity
We quantified temporal turnover in the composition of fall migrant landbird communities along the northern coast of the Yucatan Peninsula using Detrended Correspondence Analysis. The presence of winter residents of many migrant species at the site prevented turnover from being complete. However, early and late season transient communities shared few, if any, species in common. Point-count surveys showed greater compositional change than net surveys that included winter residents. The rate of species turnover was generally slow until the middle of the season, when it reached a maximum, and decreased again toward the end of the season as species composition began …
The Social Environment Affects Mate Guarding Behavior In Japanese Beetles, Popillia Japonica, Yoriko Saeki, Kipp C. Kruse, Paul Switzer
The Social Environment Affects Mate Guarding Behavior In Japanese Beetles, Popillia Japonica, Yoriko Saeki, Kipp C. Kruse, Paul Switzer
Faculty Research & Creative Activity
The effect of the social environment on post-copulatory mate guarding duration in Japanese beetles, (Popillia japonica Newman), was examined in a laboratory experiment. The mate guarding durations of beetles in different sex ratios and densities were observed for 10 hours. Guarding duration was longer when females were larger, suggesting the presence of ‘cryptic’ male mate choice. Densities, but not sex ratio, affected the duration of guarding bouts, with males guarding for longer at higher densities. This result implies that males increase their guarding duration under conditions in which their female may be likely to be encountered by other males. The …