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Articles 1 - 30 of 464
Full-Text Articles in Life Sciences
Quick And Easy Guide To Common Butterflies: An Introduction To The 25 Most Commonly Encountered Butterflies In The Midwest, Paul Switzer
Quick And Easy Guide To Common Butterflies: An Introduction To The 25 Most Commonly Encountered Butterflies In The Midwest, Paul Switzer
Faculty Research & Creative Activity
If you are new to butterfly watching, this is the book for you! It covers 25 of the most commonly encountered butterflies in the Midwestern U.S. Learning these common species will give you a great start in your discovery of the more than 100 butterfly species in our region, many of which look very similar to those included in this guide.
Quick And Easy Guide To Common Butterflies: An Introduction To The 25 Most Commonly Encountered Butterflies In The Midwest (Reduced File Size), Paul Switzer
Faculty Research & Creative Activity
If you are new to butterfly watching, this is the book for you! It covers 25 of the most commonly encountered butterflies in the Midwestern U.S. Learning these common species will give you a great start in your discovery of the more than 100 butterfly species in our region, many of which look very similar to those included in this guide.
Reduced File Size: Quick And Easy Guide To Common Butterflies: An Introduction To The 25 Most Commonly Encountered Butterflies In The Midwest, Paul Switzer
Faculty Research & Creative Activity
If you are new to butterfly watching, this is the book for you! It covers 25 of the most commonly encountered butterflies in the Midwestern U.S. Learning these common species will give you a great start in your discovery of the more than 100 butterfly species in our region, many of which look very similar to those included in this guide.
When The Cure Kills—Cbd Limits Biodiversity Research, Zhiwei Liu, Kaniyarikkal Divakaran Prathapan, Rohan Pethiyagoda, Kamaljit Bawa, Peter Raven, Priyadarsanan Rajan
When The Cure Kills—Cbd Limits Biodiversity Research, Zhiwei Liu, Kaniyarikkal Divakaran Prathapan, Rohan Pethiyagoda, Kamaljit Bawa, Peter Raven, Priyadarsanan Rajan
Faculty Research & Creative Activity
The Convention on Biological Diversity(CBD) commits its 196 nation partiesto conserve biological diversity, useits components sustainably, and sharefairly and equitably the benefits fromthe utilization of genetic resources. Thelast of these objectives was further codifiedin the Convention’s Nagoya Protocol (NP),which came into effect in 2014. Althoughthese aspirations are laudable, the NP andresulting national ambitions on Access andBenefit Sharing (ABS) of genetic resourceshave generated several national regulatoryregimes fraught with unintended consequences(1). Anticipated benefits from thecommercial use of genetic resources, especiallythose that might flow to local or indigenouscommunities because of regulatedaccess to those resources, have largely beenexaggerated and not yet realized. Instead,national regulations …
The Role Of Red Leaf Coloration In Prey Capture For Pinguicula Planifolia, Jenna Annis, Janice Coons, Charles Helm, Brenda Molano-Flores
The Role Of Red Leaf Coloration In Prey Capture For Pinguicula Planifolia, Jenna Annis, Janice Coons, Charles Helm, Brenda Molano-Flores
Faculty Research & Creative Activity
Anthocyanins in the leaves of carnivorous plants are suggested to play a role inprey capture. In this study, we investigated the role of red leaf coloration (an indicator of anthocyanins)on prey capture using Pinguicula planifolia (Chapman’s Butterwort). Overall,red leaves had less prey (i.e., Collembola) than green leaves, suggesting that red colorationdoes not enhance prey capture for Chapman’s Butterwort. However, the frequent presenceof Collembola on leaves suggests that this plant species could be relying on other cues toattract prey (e.g., olfactory cues).
A New Species Of Cyperus Section Incurvi (Cyperaceae) From Venezuela, Gordon Tucker
A New Species Of Cyperus Section Incurvi (Cyperaceae) From Venezuela, Gordon Tucker
Faculty Research & Creative Activity
Cyperus fedoniae is described as a new species. It is known from a single collection from the lowlands of southern Venezuela. It is a member of section Incurvi. It is related to C. dichromeniformis and C. inops, from which it can be distinguished by its smaller size and features of spikelets and achenes. A distinctive feature is the arching culms which take root at the base of the spikelets.Cyperus fedoniae es descrito como una nueva especie. Se conoce de una sola muestra de las tierras bajas del sur de Venezuela. Es un miembro de la secci.n Incurvi. Est. relacionada con …
Silencing Science.Pptx, Kai Hung
Silencing Science.Pptx, Kai Hung
Faculty Research & Creative Activity
This is a non-peer reviewed teaching resource.
New Mexico, Gordon Tucker, Phil Tonne
New Mexico, Gordon Tucker, Phil Tonne
Faculty Research & Creative Activity
No abstract provided.
Tradeoffs Of Warm Adaptation In Aquatic Ectotherms: Live Fast, Die Young?, A. P. Porreca, E. Martinez, R. E. Colombo, Michael A. Menze
Tradeoffs Of Warm Adaptation In Aquatic Ectotherms: Live Fast, Die Young?, A. P. Porreca, E. Martinez, R. E. Colombo, Michael A. Menze
Faculty Research & Creative Activity
In the face of a changing climate, questions regarding sub-lethal effects of elevated habitat temperature on the physiology of ectotherms remain unanswered. In particular, long-term responses of ectotherms to the warming trend in tropical regions are unknown and significantly understudied due primarily to the difficulties in specimen and community traceability. In freshwater lakes employed as cooling reservoirs for power plants, increased physiological stress from high water temperature can lead to an increase in mortality, reduce growth, and potentially alter the community structure of fishes. Throughout this study, we employ this highly tractable system to assess how elevated thermal regimes can …
Streamwise Vortices Destabilize Swimming Bluegill Sunfish (Lepomis Macrochirus), Anabela Maia, Alex P. Sheltzer, Eric D. Tytell
Streamwise Vortices Destabilize Swimming Bluegill Sunfish (Lepomis Macrochirus), Anabela Maia, Alex P. Sheltzer, Eric D. Tytell
Faculty Research & Creative Activity
In their natural environment, fish must swim stably through unsteady flows and vortices, including vertical vortices, typically shed by posts in a flow, horizontal cross-flow vortices, often produced by a step or a waterfall in a stream, and streamwise vortices, where the axis of rotation is aligned with the direction of the flow. Streamwise vortices are commonly shed by bluff bodies in streams and by ships' propellers and axial turbines, but we know little about their effects on fish. Here, we describe how bluegill sunfish use more energy and are destabilized more often in flow with strong streamwise vorticity. The …
Algal Biomass As A Binding Agent For The Densification Of Miscanthus, Sunil Thapa, Daniel Johnson, Peter Liu, Thomas Canam
Algal Biomass As A Binding Agent For The Densification Of Miscanthus, Sunil Thapa, Daniel Johnson, Peter Liu, Thomas Canam
Faculty Research & Creative Activity
Purpose: Lignocellulosic biomass has been regarded as an important future energy source due to its excessive availability; however, the wide application of this material for many applications is restricted by the high costs associated with densification, transportation, thermo-chemical pretreatment and conversion. In order to increase the density of lignocellulosic biomass, it is typically compressed into pellets or briquettes. This frequently requires the addition of additives, which may negatively impact the economics of the process. Environmentally-friendly binding agents that can be obtained inexpensively are therefore desirable. This study examines the change in physicochemical properties of densified Miscanthus straw where algae were …
Geographic Range Predicts Photosynthetic And Growth Response To Warming In Co-Occurring Tree Species, Peter B. Reich, Kerrie M. Sendall, Karen Rice, Roy L. Rich, Artur Stefanski, Sarah E. Hobbie, Rebecca A. Montgomery
Geographic Range Predicts Photosynthetic And Growth Response To Warming In Co-Occurring Tree Species, Peter B. Reich, Kerrie M. Sendall, Karen Rice, Roy L. Rich, Artur Stefanski, Sarah E. Hobbie, Rebecca A. Montgomery
Faculty Research & Creative Activity
No abstract provided.
Algal Biomass As A Binding Agent For The Densification Of Miscanthus, Sunil Thapa, Daniel B. Johnson, Peter Ping Liu, Thomas Canam
Algal Biomass As A Binding Agent For The Densification Of Miscanthus, Sunil Thapa, Daniel B. Johnson, Peter Ping Liu, Thomas Canam
Faculty Research & Creative Activity
Purpose: Lignocellulosic biomass has been regarded as an important future energy source due to its excessive availability; however, the wide application of this material for many applications is restricted by the high costs associated with densification, transportation, thermo-chemical pretreatment and conversion. In order to increase the density of lignocellulosic biomass, it is typically compressed into pellets or briquettes. This frequently requires the addition of additives, which may negatively impact the economics of the process. Environmentally-friendly binding agents that can be obtained inexpensively are therefore desirable. This study examines the change in physicochemical properties of densified Miscanthus straw where algae were …
Molecular Approaches For Improving Desiccation Tolerance: Insights From The Brine Shrimp Artemia Franciscana, Steven C. Hand, Michael A. Menze
Molecular Approaches For Improving Desiccation Tolerance: Insights From The Brine Shrimp Artemia Franciscana, Steven C. Hand, Michael A. Menze
Faculty Research & Creative Activity
Main conclusion We have evaluated the endogenous expression and molecular properties of selected Group 3 LEA proteins from Artemia franciscana , and the capacity of selected Groups 1 and 3 proteins transfected into various desiccation-sensitive cell lines to improve tolerance to drying. Organisms inhabiting both aquatic and terrestrial ecosystems frequently are confronted with the problem of water loss for multiple reasons—exposure to hypersalinity, evaporative water loss, and restriction of intracellular water due to freezing of extracellular fluids. Seasonal desiccation can become severe and lead to the production of tolerant propagules and entry into the state of anhydrobiosis at various stages …
Factors Affecting The Spatial Distribution Of Oviposition Sites For Tandem Black Saddlebags Dragonflies (Odonata: Libellulidae), Jessica L. Thornton, Paul V. Switzer
Factors Affecting The Spatial Distribution Of Oviposition Sites For Tandem Black Saddlebags Dragonflies (Odonata: Libellulidae), Jessica L. Thornton, Paul V. Switzer
Faculty Research & Creative Activity
Oviposition site location may be affected by (1) factors influencing the costs and benefits to the offspring (e.g., resource availability, competition, predation risk) and (2) factors influencing the costs and benefits to the female (e.g., predation risk or mate ha- rassment). In cases in which both the male and female are involved in locating a site, costs and benefits may differ for each parent and the resulting oviposition site location may represent the outcome of selection pressures on one or both of them. We studied oviposi- tion behavior in the black saddlebags dragonfly (Tramea lacerata Hagen), a species in which …
Factors Affecting The Spatial Distribution Of Oviposition Sites For Tandem Black Saddlebags Dragonflies (Odonata: Libellulidae), Jessica Thornton, Paul Switzer
Factors Affecting The Spatial Distribution Of Oviposition Sites For Tandem Black Saddlebags Dragonflies (Odonata: Libellulidae), Jessica Thornton, Paul Switzer
Faculty Research & Creative Activity
Oviposition site location may be affected by (1) factors influencing the costs and benefits to the offspring (e.g., resource availability, competition, predation risk) and (2) factors influencing the costs and benefits to the female (e.g., predation risk or mate ha- rassment). In cases in which both the male and female are involved in locating a site, costs and benefits may differ for each parent and the resulting oviposition site location may represent the outcome of selection pressures on one or both of them. We studied oviposi- tion behavior in the black saddlebags dragonfly (Tramea lacerata Hagen), a species in which …
Tradeoffs Of Warm Adaptation In Aquatic Ectotherms: Live Fast, Die Young?, Eloy Martinez, Anthony Porreca, Robert Colombo, Michael Menze
Tradeoffs Of Warm Adaptation In Aquatic Ectotherms: Live Fast, Die Young?, Eloy Martinez, Anthony Porreca, Robert Colombo, Michael Menze
Faculty Research & Creative Activity
In the face of a changing climate, questions regarding sub-lethal effects of elevated habitat temperature on the physiology of ectotherms remain unanswered. In particular, long-term responses of ectotherms to the warming trend in tropical regions are unknown, and understudied due to the difficulties in specimen and community traceability. In freshwater lakes employed as cooling reservoirs for power plants, increased physiological stress from high water temperature can potentially alter the community structure of fishes. We employ this highly tractable system to assess how thermal regimes can alter the physiology and ecology of aquatic species. We documented a significantly reduced lifespan, growth …
Acute Toxicity Assessment Of N,N-Diethyl-M-Toluamide (Deet) On The Photosynthetic Activity Of The Dinoflagellate Gymnodinium Instriatum, Eloy Martinez, Sylvia Velez, Marietta Mayo, Miguel Sastre
Acute Toxicity Assessment Of N,N-Diethyl-M-Toluamide (Deet) On The Photosynthetic Activity Of The Dinoflagellate Gymnodinium Instriatum, Eloy Martinez, Sylvia Velez, Marietta Mayo, Miguel Sastre
Faculty Research & Creative Activity
Despite the ubiquitous occurrence of N, N-diethyl-m-toluamide (DEET) in aquatic systems, assessments evaluating the toxicity of DEET on phytoplankton species are summed to a single study on a unicellular green alga. In particular, the toxicological effects of DEET in dinoflagellates are unknown. In this study, we employed the mixotrophic dinoflagellate Gymnodinium instriatum as a study system to evaluate acute effects of DEET on the oxygen flux of laboratory cultures. This study reports an inhibitory reaction model of DEET described by the equation y = 4.99 x 0.54, where y represents the percent inhibition of oxygen flux and x represents DEET …
Physiological Performance Of Warm-Adapted Marine Ectotherms: Thermal Limits Of Mitochondrial Energy Transduction Efficiency, Eloy Martinez, Eric Hendricks, Michael Menze, Joseph Torres
Physiological Performance Of Warm-Adapted Marine Ectotherms: Thermal Limits Of Mitochondrial Energy Transduction Efficiency, Eloy Martinez, Eric Hendricks, Michael Menze, Joseph Torres
Faculty Research & Creative Activity
Thermal regimes in aquatic systems have profound implications for the physiology of ectotherms. In particular, the effect of elevated temperatures on mitochondrial energy transduction (i.e. energy from carbon substrates to ATP) in tropical and subtropical teleosts may have profound consequences on organismal performance and population viability. Upper and lower whole-organism critical temperatures for teleosts suggest that subtropical and tropical species are not susceptible to the warming trends associated with climate change, but sub-lethal effects on energy transduction efficiency and population dynamics remain unclear. The goal of the present study was to compare the thermal sensitivity of processes associated with mitochondrial …
Acclimation Of Photosynthetic Temperature Optima Of Temperate And Boreal Tree Species In Response To Experimental Forest Warming, Kerrie M. Sendall, Peter B. Reich, Changming Zhao, Hou Jihua, Xia Orong Wei, Artur Stefanski, Karen Rice, Roy L. Rich, Rebecca A. Montgomery
Acclimation Of Photosynthetic Temperature Optima Of Temperate And Boreal Tree Species In Response To Experimental Forest Warming, Kerrie M. Sendall, Peter B. Reich, Changming Zhao, Hou Jihua, Xia Orong Wei, Artur Stefanski, Karen Rice, Roy L. Rich, Rebecca A. Montgomery
Faculty Research & Creative Activity
Rising temperatures caused by climate change could negatively alter plant ecosystems if temperatures exceed optimal
temperatures for carbon gain. Such changes may threaten temperature-sensitive species, causing local extinctions and
range migrations. This study examined the optimal temperature of net photosynthesis (Topt) of two boreal and four
temperate deciduous tree species grown in the field in northern Minnesota, United States under two contrasting temperature
regimes. We hypothesized that Topt would be higher in temperate than co-occurring boreal species, with
temperate species exhibiting greater plasticity in Topt, resulting in better acclimation to elevated temperatures. The
chamberless experiment, located at two sites in …
Group 3 Late Embryogenesis Abundant Proteins From Embryos Of Artemia Franciscana: Structural Properties And Protective Abilities During Desiccation, Leaf C. Boswell, Michael A. Menze, Steven C. Hand
Group 3 Late Embryogenesis Abundant Proteins From Embryos Of Artemia Franciscana: Structural Properties And Protective Abilities During Desiccation, Leaf C. Boswell, Michael A. Menze, Steven C. Hand
Faculty Research & Creative Activity
Group 3 late embryogenesis abundant (LEA) proteins are highly
hydrophilic, and their expression is associated with desiccation
tolerance in both plants and animals. Here we show that two
LEA proteins from embryos of Artemia franciscana, AfrLEA2
and AfrLEA3m, are intrinsically disordered in solution but
upon desiccation gain secondary structure, as measured by circular
dichroism. Trifluoroethanol and sodium dodecyl sulfate
are both shown to induce a-helical structure in AfrLEA2 and
AfrLEA3m. Bioinformatic predictions of secondary-structure
content for both proteins correspond most closely to conformations
measured in the dry state. Because some LEA proteins
afford protection to desiccation-sensitive proteins during drying
and …
Cryopreservation Of Hepatocyte (Hepg2) Cell Monolayers: Impact Of Trehalose, Blake Stokich, Quinn Osgood, David Grimm, Shhyam Moorthy, Nilay Chakraborty, Michael A. Menze
Cryopreservation Of Hepatocyte (Hepg2) Cell Monolayers: Impact Of Trehalose, Blake Stokich, Quinn Osgood, David Grimm, Shhyam Moorthy, Nilay Chakraborty, Michael A. Menze
Faculty Research & Creative Activity
A simple method to cryogenically preserve hepatocyte monolayers is currently not available but such a technique would facilitate numerous applications in the field of biomedical engineering, cell line development, and drug screening. We investigated the effect of trehalose and dimethyl sulfoxide (Me2SO) in cryopreservation of human hepatocellular carcinoma (HepG2) cells in suspension and monolayer formats. HepG2 cell monolayers were incubated for 24 h at varying concentrations of trehalose (50–150 mM) prior to cryopreservation to identify the optimum concentration for such preincubation. When trehalose alone was used as the cryoprotective agent (CPA), cells in monolayer format did not survive freezing while …
Natural History Collections: Connecting With Faculty And Content, Stacey Knight-Davis, Todd A. Bruns
Natural History Collections: Connecting With Faculty And Content, Stacey Knight-Davis, Todd A. Bruns
Faculty Research & Creative Activity
For well over a century, American biologists have built collection of plants, animals, fungi, insects, and other natural materials. Often, these collections serve as a record of the unique biodiversity of the local area and provide a record of change over time. Many taxonomic, genetic, and environmental discoveries lay waiting in the drawers and cupboards in which these specimens are stored. / / Uploading images of natural history specimens to Digital Commons allows them to be easily discovered in with a web search, leading the user back to the home collection. As an example, a search for 'big leaf magnolia …
Are U, Ni, And Hg An Environmental Risk Within A Rcra/Cercla Unit On The U.S. Department Of Energy's Savannah River Site?, Paul G. Edwards, Karen F. Gaines, A. Lawrence Bryan Jr., James M. Novak, Susan A. Blas
Are U, Ni, And Hg An Environmental Risk Within A Rcra/Cercla Unit On The U.S. Department Of Energy's Savannah River Site?, Paul G. Edwards, Karen F. Gaines, A. Lawrence Bryan Jr., James M. Novak, Susan A. Blas
Faculty Research & Creative Activity
The U.S. Department of Energy's Savannah River Site (SRS) is a former nuclear weapon production facility. From 1954–1985, releases of Al, Cu, Cr, Hg, Ni, Pb, U, and Zn were discharged into the Tims Branch-Steed Pond water system. This study investigates whether metal concentrations in Tims Branch's sediment, biofilm and other biota exceed screening level risk calculations to determine if remedial actions should be pursued for the Contaminants of Potential Concern (U, Ni, Hg). Transfer factors (TFs) were calculated to determine metal concentration changes throughout lower trophic levels and results were compared with sediment benchmarks to create hazard quotients (HQs) …
Know Where To Go, Kirstin Duffin
Know Where To Go, Kirstin Duffin
Faculty Research & Creative Activity
Assessing library article databases for efficient access to multidisciplinary research – A case study in bioenergy
Trophic Dynamics Of U, Ni, Hg And Other Contaminants Of Potential Concern On The Department Of Energy’S Savannah River Site, Paul G. Edwards, Karen F. Gaines, A. Lawrence Bryan Jr., James M. Novak, Susan A. Blas
Trophic Dynamics Of U, Ni, Hg And Other Contaminants Of Potential Concern On The Department Of Energy’S Savannah River Site, Paul G. Edwards, Karen F. Gaines, A. Lawrence Bryan Jr., James M. Novak, Susan A. Blas
Faculty Research & Creative Activity
The Department of Energy’s Savannah River Site is a former nuclear weapon material production and current research facility located in South Carolina, USA. Wastewater discharges from a fuel and nuclear reactor target manufacturing facility released depleted and natural U, as well as other metals into the Tims Branch- Steed Pond water system. We investigated the current dynamics of this system for the purposes of environmental monitoring and assessment by examining metal concentrations, bioavailability, and trophic transfer of contaminants in seven ponds. Biofilm, detritus, and Anuran and Anisopteran larvae were collected and analyzed for stable isotopes (δ15N, δ13C) and contaminants of …
Effectiveness Of Hand Removal For Small-Scale Management Of Japanese Beetles (Coleoptera: Scarabaeidae), Paul V. Switzer, Ryan M. Cumming
Effectiveness Of Hand Removal For Small-Scale Management Of Japanese Beetles (Coleoptera: Scarabaeidae), Paul V. Switzer, Ryan M. Cumming
Faculty Research & Creative Activity
Hand removal is often recommended as a method for small-scale control of Japanese beetles (Popillia japonica Newman). In this study, we investigated the effectiveness of daily hand removal for controlling damage by Japanese beetles on grape plants. We also investigated whether the timing of the removal (at 0800, 1400, or 1900 hours, or at all 3 periods) inßuenced the effectiveness of the technique. We found that hand removal signiÞcantly lowered the number of beetles on, and consequently the damage to, grape plants relative to nonremoval controls. Of the single removal treatments, removal of beetles at 1900 hours was most effective, …
Genetic Engineering, A Hope For Sustainable Biofuel Production: Review, Sudip Paudel, Michael A. Menze
Genetic Engineering, A Hope For Sustainable Biofuel Production: Review, Sudip Paudel, Michael A. Menze
Faculty Research & Creative Activity
The use of recently developed genetic engineering tools in combination with organisms that have the potential to produce precursors for the production of biodiesel, promises a sustainable and environment friendly energy source. Enhanced lipid production in wild type and/or genetically engineered organisms can offer sufficient raw material for industrial transesterification of plant-based triglycerides. Bio-diesel, produced with the help of genetically modified organisms, might be one of the best alternatives to fossil fuels and to mitigate various environmental hazards.
Effectiveness Of Hand Removal For Small-Scale Management Of Japanese Beetles (Coleoptera: Scarabaeidae), Paul Switzer, Ryan Cumming
Effectiveness Of Hand Removal For Small-Scale Management Of Japanese Beetles (Coleoptera: Scarabaeidae), Paul Switzer, Ryan Cumming
Faculty Research & Creative Activity
Hand removal is often recommended as a method for small-scale control of Japanese beetles (Popillia japonica Newman). In this study, we investigated the effectiveness of daily hand removal for controlling damage by Japanese beetles on grape plants. We also investigated whether the timing of the removal (at 0800, 1400, or 1900 hours, or at all 3 periods) inßuenced the effectiveness of the technique. We found that hand removal signiÞcantly lowered the number of beetles on, and consequently the damage to, grape plants relative to nonremoval controls. Of the single removal treatments, removal of beetles at 1900 hours was most effective, …
Male-Male Mounting And The Unreliability Of Body Size As A Character For Mate Choice In Male Japanese Beetles (Popillia Japonica Newman), Paul Switzer, Patrick Forsythe, Kipp Kruse
Male-Male Mounting And The Unreliability Of Body Size As A Character For Mate Choice In Male Japanese Beetles (Popillia Japonica Newman), Paul Switzer, Patrick Forsythe, Kipp Kruse
Faculty Research & Creative Activity
Background: Same-sex pairing is common in many animal species. In many insects, same-sex pairing is often thought to be a result of poor sexual discrimination (i.e., a mistake), but few detailed studies of the mechanisms underlying the mistaken pairing have been conducted. Previous studies have found that in the field, a small proportion of Japanese beetle (Popillia japonica) mating pairs consist of two males instead of a male and a female. In the current study, we investigated the relationship between body size, the tendency to mount other males, and the duration of these mounts, in laboratory experiments on male Japanese …