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Full-Text Articles in Life Sciences
Ain't No Sunshine When They're Gone: Pollinators In A Solar Prarie, Brigid M. Morgan
Ain't No Sunshine When They're Gone: Pollinators In A Solar Prarie, Brigid M. Morgan
Honors Theses
Around the world, pollinator populations are decreasing due to climate change, habitat loss and fragmentation, invasive species, pesticide use, and disease. A solar prairie can provide that habitat space with native plants to attract and promote the growth of native pollinator populations. In this study at the University of Dayton in Dayton, Ohio, I sought to find out if native pollinators were using the habitats inside and around the solar panels at Curran Place. By using pan traps weekly throughout the summer months to collect the insects, I found that native pollinators are using the habitats between the rows of …
A Starling In A Pear Tree: Assessing The Influence Of Bird Dispersal On Callery Pear (Pyrus Calleryana), Olivia Clark
A Starling In A Pear Tree: Assessing The Influence Of Bird Dispersal On Callery Pear (Pyrus Calleryana), Olivia Clark
Honors Theses
Invasive species can disrupt ecosystems and negatively affect other species. Callery pear (Pyrus calleryana) is an invasive ornamental tree that is spreading quickly throughout the United States. It is possible that birds are responsible for spreading Callery pear by eating the fruit and depositing seeds in new areas. European starlings (Sturnus vulgaris) and American robins (Turdus migratorius) are mentioned in most studies as responsible for the dispersal of Callery pear. However, there is also evidence that Cedar waxwings (Bombycilla cedrorum) also feed on the tree. Invasive plants can impact avian health, reproduction, and migration. Additionally, there are many aspects of …
The Impact Of Anaerobic Exposure And Propionate On The Kinetics And Pathogenesis Of Listeria Monocytogenes, Mackenzie T. Martin
The Impact Of Anaerobic Exposure And Propionate On The Kinetics And Pathogenesis Of Listeria Monocytogenes, Mackenzie T. Martin
Honors Theses
Listeria monocytogenes is a foodborne pathogen commonly found in ready-to-eat deli and dairy products. This foodborne pathogen is responsible for the disease listeriosis, which disproportionately impacts immunocompromised individuals. This research aims to evaluate how natural intestinal environments influence the pathogenesis of Listeria. One particular environmental condition that has a well-documented effect on Listeria is varying levels of oxygen. Specifically, anaerobic exposure during the growth of Listeria greatly impacts subsequent intracellular pathogenesis. When grown and adapted under anaerobic conditions, Listeria overall exhibits decreased intracellular survival and decreased cell to cell spread. However, the presence of propionate, a natural byproduct of fermentation …
Establishing A Drosophila Colon Cancer Model To Study Interactions And Therapeutic Targets Of Oncogenic Pathways, Kathleen T. Mccaslin
Establishing A Drosophila Colon Cancer Model To Study Interactions And Therapeutic Targets Of Oncogenic Pathways, Kathleen T. Mccaslin
Honors Theses
The objective of this project is to develop an in vivo colorectal cancer (CRC) model in Drosophila melanogaster to test the role of Ras and Wnt pathways in gastrointestinal cancer as potential therapeutic targets. To do so, we have (a) developed a CRC model in flies, (b) tested the levels of Ras and Wnt pathway activity in this model, and (c) will use drugs to find inhibitors of these pathways. Using fly mutants and transgenic flies we have created small patches of cancerous cells in the fly intestine in which have activated oncogenic Ras (mutation RasV12) and dominant negative p53 …
Determine The Effects Of Propionate On The Interactions Between Macrophages And Listeria Monocytogenes, Stephanie M. Johnson
Determine The Effects Of Propionate On The Interactions Between Macrophages And Listeria Monocytogenes, Stephanie M. Johnson
Honors Theses
Listeria monocytogenes is an opportunistic and intracellular foodborne pathogen that can be deadly in high risk populations. During infection in the human body, L. monocytogenes may encounter macrophages, a type of white blood cell that is critical in innate immune response both by directly targeting invading pathogens and by eliciting adaptive immune responses. During intestinal as well as peripheral infections, both L. monocytogenes and macrophages may encounter propionate, a common gut microbiome metabolite. Although propionate is shown to have various regulatory and nutritional functions, its effects on infection outcome is not well understood. Therefore, the goal of this research is …
An Exploration Of The Widely Observed Mechanisms Permitting Freeze Tolerance & The Potential Of Cope’S Gray Treefrog, Dryophytes Chrysoscelis, Samuel A. Ripley
An Exploration Of The Widely Observed Mechanisms Permitting Freeze Tolerance & The Potential Of Cope’S Gray Treefrog, Dryophytes Chrysoscelis, Samuel A. Ripley
Honors Theses
Over 80% of the Earth’s surface is exposed to seasonal cold temperatures less than 5.0oC. Ectotherms implement a variety of strategies to survive seasonal, or permanent, cold exposure. Some of the most common overwintering strategies are migration, hibernation, and freeze avoiding behavior. However, freeze tolerance is a minority choice among ectotherms. This strategy permits organisms to survive between 50.0 to 70.0% of their total body water volumes frozen primarily in extracellular spaces for up to several months at a time. Freeze tolerant organisms undergo minimal supercooling of their body fluids to ensure ice formation is slow and produce a wide …
Investigating The Effects Of A P53 Mutation And Various Tyrosine Kinase Inhibitors On Glioma Progression And Therapy Resistance In Drosophila, Kaitlyn M. Alleman
Investigating The Effects Of A P53 Mutation And Various Tyrosine Kinase Inhibitors On Glioma Progression And Therapy Resistance In Drosophila, Kaitlyn M. Alleman
Honors Theses
Gliomas, which are brain tumors that arise from glial cells, are some of the most aggressive and lethal types of tumors. These brain tumors are difficult to treat because not enough information regarding the mutations present in these tumors exists. This project studies effects of a p53 mutation on Drosophila glioma progression and then will test to see if this results in resistance to current chemotherapy. The main goal of this endeavor is to investigate the numerous defects occurring at the cellular and biochemical level in gliomas, which will give insight into why these types of tumors are so difficult …
Leaf Phenology And Freeze Tolerance Of The Invasive Tree Pyrus Calleryana (Rosaceae) And Potential Native Competitors, Abby E. Hay
Leaf Phenology And Freeze Tolerance Of The Invasive Tree Pyrus Calleryana (Rosaceae) And Potential Native Competitors, Abby E. Hay
Honors Theses
Pyrus calleryana is quickly becoming one of the most problematic invasive species in the Eastern and Central part of the United States. Pyrus calleryana is an early successional species that quickly proliferates in highly disturbed soils such as old fields and younger prairies. Currently, this species poses a large threat to land managers as it changes the successional trajectories of forest and prairie systems, creating new novel ecosystems. Pyrus calleryana outcompetes most native early successional species and is relatively understudied. The mechanism in which Pyrus calleryana utilizes to dominate ecosystems are not fully understood, but one theory is Pyrus calleryana …
Determine The Effects Of Propionate On The Activation Of Macrophages Against The Intracellular Pathogen Listeria Monocytogenes, Leah O. Allen
Determine The Effects Of Propionate On The Activation Of Macrophages Against The Intracellular Pathogen Listeria Monocytogenes, Leah O. Allen
Honors Theses
The main goal of this research is to see how propionate, a common food preservative and an important metabolite in humans, alters the activation of our immune system. The effects of propionate on macrophage activation will be determined by using nitrite and LDH assays. For these assays, different concentrations of propionate will be tested to determine how macrophages respond to the activation by LPS and interferon gamma. Another goal of this project is to determine the effects of propionate and macrophage activation on intracellular survival of L. monocytogenes. A gentamicin protection assay will be used to better establish the role …
The Effects Of Sublethal Antibiotics On Listeria Monocytogenes, Marlena Rae Merling
The Effects Of Sublethal Antibiotics On Listeria Monocytogenes, Marlena Rae Merling
Honors Theses
Antibiotics can be found in sublethal levels environmentally as pollution and within the body when used as medication. Antibiotics induce stress responses and sometimes act as signaling molecules in bacteria. In order to better understand the relationship between antibiotics and bacterial infections, the effects of sublethal antibiotic exposure on the ability of Listeria monocytogenes to infect macrophages was studied. Listeria monocytogenes is an intracellular pathogen of the gastrointestinal tract that is facultatively anaerobic. Two strains of Listeria monocytogenes were tested: a lab strain and a clinical cardiotropic strain. The strains were grown in liquid media overnight aerobically or anaerobically with …
The Effects Of L. Rhamnosus Consumption On Male Long Evans Rat Anxiety-Like Behavior, Amanda Marie Schleper
The Effects Of L. Rhamnosus Consumption On Male Long Evans Rat Anxiety-Like Behavior, Amanda Marie Schleper
Honors Theses
Adolescent stress in humans has been correlated with an increased likelihood of an individual to develop an alcohol use disorder later in life. Literature has demonstrated that rats subjected to adolescent stress tend to show an increased preference and consumption of ethanol. Adolescence is a critical time of development. The link between adolescent stressors and alcohol use disorders is not fully understood yet. This study examined the relationship between adolescent stress and alcohol consumption and preference in rats. Probiotics are bacteria with potential health benefits and have been well accepted as a dietary supplement. Literature shows that probiotics could decrease …
Pathogenic Differences In Listeria Monocytogenes 10403s And Cardiotropic Strains Grown Under Aerobic And Anaerobic Conditions, Alexander Hayes
Pathogenic Differences In Listeria Monocytogenes 10403s And Cardiotropic Strains Grown Under Aerobic And Anaerobic Conditions, Alexander Hayes
Honors Theses
Listeria monocytogenes is a gram-positive bacillus that is commonly associated with foodborne illness. It is a facultative intracellular pathogen responsible for causing the listeriosis infection in humans which is particularly dangerous to immunocompromised individuals. L. monocytogenes pathogenesis occurs through a series of complex interactions between host and bacterial cellular machinery. The wild-type strain as well as a cardiotropic strain with high affinity for infecting cardiac tissue were used to investigate pathogenesis in L. monocytogenes. Specifically, the Listeriolysin O protein that is critical for virulence was investigated. Aerobic and anaerobic growth environments as well as short-chain fatty acid supplementation were utilized …
Flourishing The Urban Environment: How Urban Gardens Affect Pollinators, Emily Ann Rickert
Flourishing The Urban Environment: How Urban Gardens Affect Pollinators, Emily Ann Rickert
Honors Theses
The order of Hymenoptera is classified as bees, wasps, and ants and are widely recognized as pollinators. Some species of bees (family Apoidea) and hoverflies tend to focus on certain types of flowers and are attracted to patterns and colors. Native plants and crops that are specifically bee-friendly can encourage bees and other pollinators that are decreasing in biodiversity and population to come back. Urban gardens work to provide vegetables and organic produce to its communities and subsequently are also growing pollinator-friendly food. This study focuses on whether the biodiversity of Hymenoptera, hoverflies, and other significant pollinators are affected by …
In The Face Of Antimicrobialsfactors Contributing To Listeria Monocytogenes Survival And Development Of Resistance, Andrea M. Vietti
In The Face Of Antimicrobialsfactors Contributing To Listeria Monocytogenes Survival And Development Of Resistance, Andrea M. Vietti
Honors Theses
Bacterial antibiotic resistance is on an alarming rise worldwide, thus posing an urgent threat to human health. The rise in antibiotic resistance can be attributed to the overuse and misuse of antibiotics in both the healthcare and agricultural industries. In order to address this concern, this research aimed to identify environmental conditions that may lead to the development of antibiotic resistance in Listeria monocytogenes. L. monocytogenes is a foodborne pathogen capable of causing the disease listeriosis and is especially dangerous for immunocompromised populations. Although infected individuals are treated with antibiotics, an alarmingly high mortality rate of 20 percent still persists; …
Propionate Enhances The Antimicrobial Defenses In Macrophages Against Listeria Monocytogenes, John Weis
Propionate Enhances The Antimicrobial Defenses In Macrophages Against Listeria Monocytogenes, John Weis
Honors Theses
Propionate is a short chain fatty acid produced by the bacteria in the human gut. It has a wide range of nutritional functions in the human body. Several studies have also reported the effects of propionate on immune cell activation. In this study, we used Listeria monocytogenes as a model pathogen to determine how and what the effects of propionate on immune cells influence cell susceptibility to infections. Listeria is a dangerous intracellular pathogen that can replicate inside immune cells such as macrophages. Therefore, we can assess the impact of propionate on infection susceptibility by performing cell culture infections. We …
Analysis Of Change In The Biodiversity Of Fish And Macroinvertebrates Following Low Dam Modification And Kayak Chute Installation In The Great Miami River In Downtown Dayton, Ohio, Madison E. Conway
Honors Theses
Over two years, from 2015-2017, the Miami Conservancy District and Five Rivers Metroparks completed a project to modify the low dam above Monument Avenue into a kayak chute and constructed a second, entirely new kayak chute about one-half mile upstream near Riverscape Metropark in downtown Dayton, Ohio. Low dams have a negative impact on river habitat by decreasing water velocity in the impoundment behind the dam. Physical habitat, which should consist of alternating pools and riffles, is disturbed and replaced by deeper, slower-moving water that accumulates deposits of sediment on the river bottom degrading its value as habitat. The conditions …
Establishing The Effect Of Ethanol On Listeria Infection, Ryan Evan Restrepo
Establishing The Effect Of Ethanol On Listeria Infection, Ryan Evan Restrepo
Honors Theses
Excessive alcohol consumption is common in the United States, particularly among college campuses. Previous studies have shown that excessive drinking increases the risk of drug dependency, sexual assault and liver damage. Heavy drinking has also proven to impact immune capabilities. Immune cell function and numbers have been shown to be negatively impacted by alcohol treatment. This research project used different cell cultures to model human cells and investigated how exposure to alcohol affects susceptibility to bacterial infection. Listeria monocytogenes, a common foodborne bacterium, was used as a model pathogen. A high alcohol preferring mouse model was also used to examine …
The Vascular Flora Of Bill Yeck Park: Supporting The Conservation Of Local Biodiversity, Taylor Sparbanie
The Vascular Flora Of Bill Yeck Park: Supporting The Conservation Of Local Biodiversity, Taylor Sparbanie
Honors Theses
Maintaining and fostering biodiversity is a critical component of natural areas management and conservation because of its known links to ecosystem function and stability. Identifying and documenting species through a floristic inventory is an important strategy for detecting the presence of rare or unique species, as well as invasive species that pose a threat to biodiversity. Bill Yeck Park is a 194-acre nature park maintained by Centerville-Washington Park District and is largely surrounded by residential areas. The goal of this project was to generate list of vascular plant species for Bill Yeck Park, a large park within the Centerville-Washington Township …
Modulation Of Listeria Monocytogenes Carbon Metabolism By Short Chain Fatty Acids, Diksha Bedi
Modulation Of Listeria Monocytogenes Carbon Metabolism By Short Chain Fatty Acids, Diksha Bedi
Honors Theses
Listeria monocytogenes, a bacterial pathogen, is associated with foodborne infections in humans. Listeria encounters short chain fatty acids (SCFAs) during its transit through the intestine but its metabolic responses to SCFAs are not fully understood. To determine how Listeria metabolism is affected by SCFAs, I performed basic microbiology assays, including monitoring optical density, determining acetoin production, and measuring culture pH levels. I also performed preliminary 13C-NMR assays to provide a more in-depth look into carbon metabolism in SCFA-treated Listeria. I found that propionate-supplemented Listeria produced significantly more acetoin compared to no supplemented controls. Because acetoin is a product of central …
The Prickly Problem Of Pears Potential Effects Of Native Orthopteran Herbivory On An Invasive Woody Plant, Kaitlin Gawkins
The Prickly Problem Of Pears Potential Effects Of Native Orthopteran Herbivory On An Invasive Woody Plant, Kaitlin Gawkins
Honors Theses
Across the United States, land managers are struggling to cope with a relatively new invasive species, Callery pear (Pyrus calleryana). Callery pear is currently one of the most important invasive species threatening prairies and early successional habitats in Ohio and the Midwest, and yet, no viable means of control exists for this species. This species is relatively resistant to herbicides and resilient against prescribed cutting and burning. One potential management of invasive species is biocontrol, or the intentional introduction of natural enemies to control the growth and propagation of a target organism. Previous experiments with Callery Pear have examined herbivory …
Global And Gene-Specific Regulation In Freeze-Tolerant Anuran Dryophytes Chrysoscelis, Elizabeth Claire Sinnathamby
Global And Gene-Specific Regulation In Freeze-Tolerant Anuran Dryophytes Chrysoscelis, Elizabeth Claire Sinnathamby
Honors Theses
Cope’s Gray Treefrog, Dryophytes chysoscelis, seasonally tolerates freezing. During this process, it is subject to cellular stress from factors such as metabolic starvation, DNA damage, toxin accumulation (from cellular metabolism), and the risk of protein misfolding. Preliminary transcriptome data indicates that many mRNA transcripts vary in relative abundance within hepatocytes of D. chrysoscelis during discrete periods of warm acclimation, cold acclimation, freezing, and thawing. Physiological changes that occur in this frog are likely the result of epigenetic regulation—an alteration in gene expression that does not influence DNA sequence. This modification in gene expression can be observed by the subsequent change …
Drosophila Tumor Mosaic Models To Study Intercellular Interaction, Minh T.D. Ho
Drosophila Tumor Mosaic Models To Study Intercellular Interaction, Minh T.D. Ho
Honors Theses
Drosophila is a powerful genetic model system to study cancer. In patients, a small number of mutations accumulate in cells that change their growth characteristics and eventually lead to the formation of tumors. These tumors are clonal in origin, meaning the cancer arose from the proliferation of a single rogue cell. We have developed similar "clonal" cancer models in the Drosophila brain to study how tumor cells interact among each other and with their neighbors. To study such interactions, we need to tag the tumor cells and their neighboring cells. Such differentially marked clone-pairs or ‘twin-spots’ are ideal for genetic …
Cortisol Regulation Of Aquaglyceroporin Hc-3 Protein Expression In The Erythrocytes Of The Freeze Tolerant Tree Frog Dryophytes Chrysoscelis, Maria P. Labello
Cortisol Regulation Of Aquaglyceroporin Hc-3 Protein Expression In The Erythrocytes Of The Freeze Tolerant Tree Frog Dryophytes Chrysoscelis, Maria P. Labello
Honors Theses
Dryophytes chrysoscelis, commonly known as Cope’s gray treefrog, is a freeze tolerant anuran that freezes up to 65% of extracellular fluid during winter to survive. Glycerol is presumably used as a cryoprotectant during a period of cold-acclimation to protect cells from permanent damage due to hypoosmotic stress upon freezing and thawing. The passage of glycerol and water during cold-acclimation is mediated through aquaglyceroporin HC-3 in the nucleated erythrocytes (RBCs) of D. chrysoscelis. This thesis analyzes the mechanisms in which D. chrysoscelis prepares for cold-acclimation and glycerol synthesis. Cortisol is a stress hormone known to respond to osmolarity and metabolic challenges …
Characterization Of The Glycosylation Of Aquaglyceroporin Hc-3 In Erythrocytes From The Freeze Tolerant Anuran, Dryophytes Chrysoscelis, Dante L. Pezzutti
Characterization Of The Glycosylation Of Aquaglyceroporin Hc-3 In Erythrocytes From The Freeze Tolerant Anuran, Dryophytes Chrysoscelis, Dante L. Pezzutti
Honors Theses
By utilizing an extreme physiological adaptation known as freeze-tolerance, Cope’s gray tree frog, Dryophytes chrysoscelis, freezes and then subsequently thaws up to 65% of its extracellular fluid to survive the winter. During these periods of freezing and thawing, erythrocytes (RBCs) of D. chrysoscelis utilize a protein, aquaglyceroporin HC-3, that facilitates transmembrane flux of both water and cryoprotective glycerol to mediate osmotic adjustments. RBCs from cold-acclimated tree frogs up-regulate HC-3 protein expression, which coincides with more abundant membrane localization and higher levels of glycosylation. However, the functional significance of HC-3 glycosylation on membrane localization and cellular freeze tolerance is currently not …
Determining The Role Of Fatty Acid Composition In Antibiotic Resistance, Andrew Deak
Determining The Role Of Fatty Acid Composition In Antibiotic Resistance, Andrew Deak
Honors Theses
Bacterial infections that can no longer be treated by antibiotics because of bacterial mutations cause many infections and deaths each year. My research conducted aims to study how membrane fatty acid composition can affect membrane susceptibility to antibiotics. Listeria monocytogenes, a gram-negative facultative anaerobe, is the bacterium that I am testing. Listeria has 80-90% branched-chain fatty acids (BCFAs) which allow membrane fluidity and sufficient protection against invaders. When Listeria is grown in the presence of butyrate, the BCFAs become straight-chain fatty acids (SCFAs) and make the once fluid membrane more rigid. This allows for easier antibiotic penetration of the phospholipid …
If You Build It, They Will Come: A Habitat Mimicry-Based Assessment Tool For Estimating Larval Salamander Density In Temperate Forests Streams, Margaret E. Maloney
If You Build It, They Will Come: A Habitat Mimicry-Based Assessment Tool For Estimating Larval Salamander Density In Temperate Forests Streams, Margaret E. Maloney
Honors Theses
The biology of small, forested streams is critical to the ecology of larger waterways and broader watershed function. Because of their size, these “headwater streams” are strongly influenced by surrounding landscape conditions and their biology is intimately connected to the landscape through material and energy subsidies. In the United States, 50 to 80 percent of streams are primary headwater streams, making them a high priority for conservation. Often, stream salamanders are a useful indicator for biotic integrity of headwater streams due to their longevity, relatively stable populations, small home ranges, and abundance. Assessing stream salamanders is a challenging endeavor and …
Changes In Herbaceous Plant Diversity In An Old-Growth Ohio Forest Before And After Emerald Ash Borer Invasion, Taylor Melissa Buskey
Changes In Herbaceous Plant Diversity In An Old-Growth Ohio Forest Before And After Emerald Ash Borer Invasion, Taylor Melissa Buskey
Honors Theses
The herbaceous layer of eastern North American deciduous forests is an important contributor to biodiversity in this region. One of the greatest threats to herbaceous plant diversity is the introduction of invasive species, which can suppress native species and alter local environmental conditions. Agrilus planipennis (emerald ash borer) is a non-native insect pest that has caused a mass death of ash trees (Fraxinus spp.) in North America since its introduction to the United States. The resultant changes in canopy structure may affect local conditions and thus have indirect impacts on herbaceous layer composition. Drew Woods State Nature Preserve is a …
Chronic Administration Of Probiotic L. Rhamnosus Increases Anxiety-Like Behavior In Group-Housed Male Long Evans Rats, Parker Maddison Griff
Chronic Administration Of Probiotic L. Rhamnosus Increases Anxiety-Like Behavior In Group-Housed Male Long Evans Rats, Parker Maddison Griff
Honors Theses
Early life stress is a risk factor for later development of alcohol use disorders and anxiety disorders in humans. Using rodent experimental models, we know that rats experiencing social isolation as early-life stress exhibit greater anxiety-like behavior and alcohol consumption than rats housed in groups. Examining potential preventive strategies, we investigated the effects of probiotics, which have previously been shown to decrease rodent anxiety-like behavior, on the relationship between early-life stress and anxiety-like behavior in rats. We hypothesized that probiotics consumption would decrease anxiety-like behavior in socially isolated rats, as well as in rats housed in groups. To our surprise, …
Effects Of Ultrasound On Amyloid Beta 42 (Aβ42) Mediated Neurodegeneration, Sarah Byrne
Effects Of Ultrasound On Amyloid Beta 42 (Aβ42) Mediated Neurodegeneration, Sarah Byrne
Honors Theses
Alzheimer’s disease (AD) is an age related progressive neurodegenerative disease. The exact mechanisms that lead to cell death are not entirely understood. It has been shown that accumulation of amyloid-beta-42 (Aβ42) plaques generated by mis-cleavage of amyloid-precursor-protein is the cause of neurodegeneration seen in AD. This is due to the hydrophobic nature of Aβ42 due to extra two amino acids added to the typical and naturally occurring Aβ40 in the body. These Aβ42 plaques trigger neuronal death because of the toxic nature and stress they exert on the neurons. In this study, Drosophila melanogaster transgenic model where human Aβ42 coding …
Lethal Effects Of The Non-Native Invasive Shrub Amur Honeysuckle (Lonicera Maackii) On A Model Aquatic Organism (Hyalella Azteca), Eric B. Borth
Lethal Effects Of The Non-Native Invasive Shrub Amur Honeysuckle (Lonicera Maackii) On A Model Aquatic Organism (Hyalella Azteca), Eric B. Borth
Honors Theses
The invasive plant Lonicera maackii (Amur honeysuckle) has had a variety of ecological effects as it continues to spread through the eastern United States including the loss of plant biodiversity and alterations in ecosystem function in forests. Streams meander through many forests where Amur honeysuckle is present and recent evidence suggests that this terrestrial invasion has consequences for stream biology. Leaves of Amur honeysuckle have been shown to have strong negative effects on terrestrial insects and we hypothesized that these negative effects may also occur in aquatic macroinvertebrates. In this set of experiments we used a sequence of microcosm assays …