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Year Published: 2018

Forecasting effects of angler harvest and climate change on smallmouth bass abundance at the southern edge of their range

Climate change will affect stream systems in numerous ways over the coming century. Globally, streams are expected to experience changes in temperature and flow regime. Previous work has indicated that these changes will likely affect fish distributions, but little work has been conducted examining population level effects of climate change on...

Middaugh, Christopher R.; Magoulick, Daniel D.

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Year Published: 2018

An individual-based model for predicting dynamics of a newly established Mexican wolf (Canis lupus baileyi) population—Final report

Project SummaryThe Mexican wolf recovery team proposed to establish other populations of Mexican wolves (Canis lupus baileyi) in the Southwest (U.S. Fish and Wildlife Service, 1982). We were tasked to conduct an extensive simulation modeling exercise to determine release strategies (in conjunction with management actions) that best predict...

Gedir, Jay V.; Cain, James W.
Gedir, J.V., and Cain, J.W., III, 2018, An individual-based model for predicting dynamics of a newly established Mexican wolf (Canis lupus baileyi) population—Final report: U.S. Geological Survey Open-File Report 2018-1126, 16 p., https://doi.org/10.3133/ofr20181126.

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Year Published: 2018

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.
Zweep, J. S., Jacques, C. N., Jenkins, S. E., Klaver, R. W. and Dubay, S. A. (2018), Nest tree use by southern flying squirrels in fragmented Midwestern landscapes. Wildl. Soc. Bull.. . doi:10.1002/wsb.901

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Year Published: 2018

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.

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Year Published: 2018

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

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Year Published: 2018

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.

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Year Published: 2018

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.

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Year Published: 2018

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.

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Year Published: 2018

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.
Ashbaugh, H.M., Conway, W.C., Haukos, D.A. et al. Ecotoxicology (2018) 27: 703. https://doi.org/10.1007/s10646-018-1952-2

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Year Published: 2018

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.

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Year Published: 2018

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.

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Year Published: 2018

Examination of multiple working hypotheses to address reproductive failure in reintroduced Whooping Cranes

Understanding multiple challenges that restrict conservation success is a central task of applied ecology, especially when resources are limited and actions are expensive, such as with reintroduction programs. Simultaneous consideration of multiple hypotheses can expedite identification of factors that most limit conservation success. Since 2001,...

Barzen, Jeb A.; Converse, Sarah J.; Adler, Peter H.; Lacy, Anne E; Gray, Elmer; Gossens, Andrew