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Nest tree use by Southern flying squirrels in fragmented midwestern landscapes
Southern flying squirrels (Glaucomys volans; SFS) nest in naturally formed cavities in snags and hardwoods found in mature, oak (Quercus spp.)–hickory (Carya spp.) forests. Intensive forest fragmentation of the Midwest United States limits the number of available nesting trees. We quantified annual nest‐site selection patterns by...Zweep, James S.; Jacques, Christopher N.; Jenkins, Sean E.; Klaver, Robert W.; Dubay, Shelli A.
Piscivore diet shifts and trophic level change after Alewife establishment in Lake Champlain
Invasions and deliberate introductions of new prey species are likely to affect prey choice and trophic level of resident predators. Rainbow Smelt (Osmerus mordax) and Alewife (Alosa pseudoharengus) are common prey fish species in lakes throughout North America either as native or non‐native species. The establishment of Alewife in the 2000s in a...Simonin, Paul W.; Rudstam, Lars G.; Parrish, Donna; Pientka, Bernard; Sullivan, Patrick J.
The influence of angler values, involvement, catch orientation, satisfaction, agency trust, and demographics on support for habitat protection and restoration versus stocking in publicly managed waters
Resource managers benefit from knowledge of angler support for fisheries management strategies. Factors including angler values (protection, utilitarian, and dominance), involvement (attraction, centrality, social, identity affirmation, and expression), catch-related motivations (catching some, many, and big fish, and keeping fish), satisfaction,...Schroeder, Susan A.; Fulton, David C.; Altena, Eric; Baird, Heather; Dieterman, Douglas J.; Jennings, Martin
Effects of temperature and precipitation on grassland bird nesting success as mediated by patch size
Grassland birds are declining faster than any other bird guild across North America. Shrinking ranges and population declines are attributed to widespread habitat loss and increasingly fragmented landscapes of agriculture and other land uses that are misaligned with grassland bird conservation. Concurrent with habitat loss and degradation,...Zuckerberg, Benjamin; Ribic, Christine; McCauley, Lisa A.
Extinction risk and conservation options for Maui Parrotbill, an endangered Hawaiian honeycreeper
Extinction rates for island birds around the world have been historically high. For forest passerines, the Hawaiian archipelago has suffered some of the highest extinction rates and reintroduction is a conservation tool that can be used to prevent the extinction of some of the remaining endangered species. Population viability analyses can be used...Mounce, Hanna L.; Warren, Christopher C.; McGowan, Conor P.; Paxton, Eben H.; Groombridge, J.J.
Riparian defoliation by the invasive green alder sawfly influences terrestrial prey subsidies to salmon streams
Invasive species in riparian forests are unique as their effects can transcend ecosystem boundaries via stream‐riparian linkages. The green alder sawfly (Monsoma pulveratum) is an invasive wasp whose larvae are defoliating riparian thin‐leaf alder (Alnus tenuifolia) stands across southcentral Alaska. To test the hypothesis that riparian...Roon, David A.; Wipfli, Mark S.; Kruse, James J.
Evidence for exposure to selenium by breeding interior snowy plovers (Charadrius nivosus) in saline systems of the Southern Great Plains
Interior snowy plover (Charadrius nivosus) population declines and deteriorating conditions throughout the Southern Great Plains (SGP) of Texas, New Mexico, and Oklahoma may be linked to environmental contaminants. Concentrations of V, As, Cd, Pb, and Se were quantified in breeding snowy plover blood, feathers (5th primary; P5), and potential prey...Ashbaugh, H.M.; Conway, Warren C.; Haukos, David A.; Collins, D. P.; Comer, C. E.; French, A. D.
The influence of nutrients from carcasses of sea lamprey (Petromyzon marinus) on larval growth and spawner abundance
Migrations of anadromous sea lamprey (Petromyzon marinus) from marine ecosystems serve as vectors of nutrients into freshwater food webs. Larval sea lamprey reside in streams for 6–8 years as deposit feeders before metamorphosing into juveniles and migrating to the ocean. Previous work has shown that carcass nutrients, which result from the death...Weaver, Daniel M.; Coghlan, Stephen M.; Zydlewski, Joseph D.
Assessment of Alaska rain-on-snow events using dynamical downscaling
The ice formed by cold-season rainfall or rain on snow (ROS) has striking impacts on the economy and ecology of Alaska. An understanding of the atmospheric drivers of ROS events is required to better predict them and plan for environmental change. The spatially/temporally sparse network of stations in Alaska makes studying such events challenging...Bieniek, Peter A.; Bhatt, Uma S.; Walsh, John E.; Lader, Rick; Griffith, Brad; Roach, Jennifer K.; Thoman, Richard L.
Evaluation of targeted and untargeted effects-based monitoring tools to assess impacts of contaminants of emerging concern on fish in the South Platte River, CO
Rivers in the arid Western United States face increasing influences from anthropogenic contaminants due to population growth, urbanization, and drought. To better understand and more effectively track the impacts of these contaminants, biologically-based monitoring tools are increasingly being used to complement routine chemical monitoring....Ekman, Drew R.; Keteles, Kristen; Beihoffer, Jon; Cavallin, Jenna E.; Dahlin, Kenneth; Davis, John M.; Jastrow, Aaron; Lazorchak, James M.; Mills, Marc A.; Murphy, Mark; Nguyen, David; Vajda, Alan M.; Villeneuve, Daniel L.; Winkelman, Dana L.; Collette, Timothy W.
Food web contaminant dynamics of a large Atlantic Slope river: Implications for common and imperiled species
Persistent and bioaccumulative contaminants often reach concentrations that threaten aquatic life by causing alterations in organism behavior and development, disruption of biological processes, reproductive abnormalities, and mortality. The objectives of this research were to determine the aquatic food web structure and trophic transfer and...Kwak, Thomas J.; Penland, Tiffany N.; Grieshaber, Casey A.; Cope, W. Gregory; Heise, Ryan J.; Sessions, Forrest W.
Quantifying population-level effects of water temperature, flow velocity and chemical-induced reproduction depression: A simulation study with smallmouth bass
Evaluating stochastic abiotic factors and their combined effects on fish and wildlife populations have been challenging in environmental sciences. Contributing to this challenge is the paucity of data describing how observations made on individuals related to exposure to chemical compounds ultimately effect population vital rates, and how this...Wagner, Tyler; Blazer, Vicki S.; Yan Li