A5090316937- Physiological and biochemical adaptations
- Freshwater macroinvertebrate diversity and ecology
- Fish Ecology and Management Studies
- Species Distribution and Climate Change
- Molecular Biology Techniques and Applications
- Animal Behavior and Reproduction
- Ecology and Vegetation Dynamics Studies
- Cardiovascular and exercise physiology
- High Altitude and Hypoxia
- Environmental DNA in Biodiversity Studies
- Hydrology and Sediment Transport Processes
- Aquatic Invertebrate Ecology and Behavior
- Fire effects on ecosystems
- Plant and animal studies
- Environmental Toxicology and Ecotoxicology
- Insect and Pesticide Research
University of Montana
2019-2024
Wild Salmon Center
2024
Brigham Young University
2019-2023
Recent experiments support the idea that upper thermal limits of aquatic insects arise, at least in part, from a lack sufficient oxygen: rising temperatures typically stimulate metabolic demand for oxygen more than they increase rates supply environment. Consequently, factors influencing supply, like water flow, should also affect and hypoxia tolerance. We tested this hypothesis by measuring effects experimentally manipulated flows on heat tolerance nymphs giant salmonfly (Plecoptera:...
Abstract Vulnerability to warming is often assessed using short‐term metrics such as the critical thermal maximum (CT MAX ), which represents an organism's ability survive extreme heat. However, long‐term effects of sub‐lethal are essential link fitness in wild, and these not adequately captured by like CT . The meltwater stonefly, Lednia tumana , endemic high‐elevation streams Glacier National Park, MT, USA, has long been considered acutely vulnerable climate‐change‐associated stream...
Recent increases in the frequency and size of desert wildfires bring into question impacts fire on invertebrate communities. Furthermore, consumer communities can strongly impact invertebrates through predation top-down effects plant community assembly. We experimentally applied burn rodent exclusion treatments a full factorial design at sites both Mojave Great Basin deserts to examine that consumers have Pitfall traps were used survey from April September 2016 determine changes abundance,...
Abstract Pteronarcys californica (Newport 1848) is commonly referred to as the giant salmonfly and largest species of stonefly (Insecta: Plecoptera) in western United States. Historically, it was widespread abundant rivers, but populations have experienced a substantial decline past few decades, becoming locally extirpated numerous rivers Utah, Colorado, Montana. Although previous research has explored ecological variables conducive survivability salmonfly, lack genomic resources hampers...
Animals, including insects, need oxygen for aerobic respiration and eventually asphyxiate without it.Aerobic respiration, however, produces reactive species (ROS), which contribute to dysfunction aging.Animals appear balance risks of asphyxiation ROS by regulating internal relatively low stable, but sufficient levels.How much do levels vary among species, how does variation depend on environment life history?We predicted that lower occur in insects with either limited access environmental...
For insects, life in water is challenging because oxygen supply typically low compared with air. Oxygen limitation may occur when levels or flows are warm temperatures stimulate metabolic demand for oxygen. A potential mechanism mitigating shortages behavior - moving to cooler, more oxygenated faster flowing microhabitats. Whether stream insects can make meaningful choices, however, depends on: (i) how temperature, and flow vary at microspatial scales (ii) the ability of sense exploit that...
respiration, however, produces reactive oxygen species (ROS), which contribute to dysfunction and aging. Animals appear balance risks of asphyxiation ROS by regulating internal low but sufficient levels. How much do levels vary among species, how does variation depend on environment life history? We predicted that lower occur in animals with either limited access environmental (i.e., aquatic animals, facilitating diffusive uptake, reducing asphyxiation), consistently metabolic rates inactive...
Species vulnerability to global warming is often assessed using short-term metrics such as the critical thermal maximum (CTmax), which represents an organism’s ability survive extreme heat. However, understanding of long-term effects sub-lethal essential link fitness in wild, and these are not adequately captured by like CTmax. The meltwater stonefly, Lednia tumana , endemic high-elevation streams Glacier National Park, MT, USA, has long been considered acutely vulnerable climate...
La manipulación y degradación de los ríos puede tener efectos perjudiciales en las comunidades insectos acuáticos. Los proyectos restauración tratan mitigar estas perturbaciones humanas. Evaluar la eficacia sigue siendo un objetivo importante para gestores biólogos conservacionistas, modo que el futuro puedan utilizarse mejores métodos restauración. Entre 1999 2008, Utah Reclamation Mitigation and Conservation Commission restauró una porción canalizada 15 km del río Provo (condado Wasatch,...
Abstract For insects, aquatic life is challenging because oxygen supply typically low compared to air. Although many insects rely on stream flows augment supply, limitation may occur when levels or are warm temperatures stimulate metabolic demand for oxygen. Behavior allow mitigate shortages – by moving cooler, more oxygenated, faster flowing microhabitats. However, whether can make meaningful choices depends on: i) how much temperature, oxygen, and flow vary at microspatial scales in...
The Climate Variability Hypothesis (CVH) predicts that ectotherms from thermally variable climates should have wider thermal tolerances than their counterparts living in stable climates. Although the CVH has been widely supported, mechanisms underlying tolerance traits remain unclear. We test and along with three mechanistic hypotheses may explain how differences limits arise: 1) Short-term Acclimation (mechanism: rapid, reversible plasticity), 2) Long-term Effects (mechanisms: developmental...