76 Works

Behavioral patterns of bats at a wind turbine events

Shifra Goldenberg, Paul Cryan, P. Marcos Gorresen & Lee Jay Fingersh
Bat fatalities at wind energy facilities in North America are predominantly comprised of migratory, tree-dependent species, but it is unclear why these bats are at higher risk. Factors influencing bat susceptibility to wind turbines might be revealed by temporal patterns in their behaviors around these dynamic landscape structures. In northern temperate zones fatalities occur mostly from July through October, but whether this reflects seasonally variable behaviors, passage of migrants, or some combination of factors remains...

Conspecific and congeneric interactions shape increasing rates of breeding dispersal of northern spotted owls

Julianna Jenkins, Damon Lesmeister, Eric Forsman, Katie Dugger, Steven Ackers, Lawrence Andrews, Scott Gremel, Bruce Hollen, Chris McCafferty, M. Shane Pruett, Janice Reid, Stan Sovern & J. David Wiens
Breeding dispersal, the movement from one breeding territory to another, is rare for philopatric species that evolved within relatively stable environments, such as the old-growth coniferous forests of the Pacific Northwest. While dispersal is not inherently maladaptive, the consequences of increased dispersal on population dynamics in populations whose historical dispersal rates are low could be significant, particularly for a declining species. We examined rates and possible causes of breeding dispersal based on a sample of...

Disease or drought: Environmental fluctuations release zebra from a potential pathogen-triggered ecological trap

Yen-Hua Huang, Hendrina Joel, Martina Küsters, Zoe Barandongo, Claudine Cloete, Axel Hartmann, Pauline Kamath, Werner Kilian, John Mfune, Gabriel Shatumbu, Royi Zidon, Wayne Getz & Wendy Turner
When a transmission hotspot for an environmentally persistent pathogen establishes in otherwise high-quality habitat, the disease may exert a strong impact on a host population. However, fluctuating environmental conditions lead to heterogeneity in habitat quality and animal habitat preference, which may interrupt the overlap between selected and risky habitats. We evaluated spatiotemporal patterns in anthrax mortalities in a plains zebra (Equus quagga) population in Etosha National Park, Namibia, incorporating remote-sensing and host telemetry data. A...

Convergence of undulatory swimming kinematics across a diversity of fishes

Elsa Goerig, Valentina Di Santo, Dylan K. Wainwright, Theodore Castro-Santos, James Liao, Otar Akanyeti & George Lauder
Fishes exhibit an astounding diversity of locomotor behaviors, from classic swimming with their body and fins to jumping, flying, walking, and burrowing. Fishes that use their body and caudal fin (BCF) during undulatory swimming have been traditionally divided into modes based on the length of the propulsive body wave and the ratio of head:tail oscillation amplitude: anguilliform, sub-carangiform, carangiform and thunniform. This classification was first proposed based on key morphological traits, such as body stiffness...

Local fruit availability and en route wind conditions are poor predictors of bird abundance and composition during fall migration in coastal Yucatán Peninsula

Richard Feldman, Antonio Celis Murillo, Jill Deppe & Alfredo Dorantes Euan
In migratory stopover habitats, bird abundance and composition change on a near daily basis. On any given day, the local bird community should reflect local environmental conditions but also the environments that birds encountered previously along their migratory route. For example, during fall migration, the coast of the Yucatán Peninsula in Mexico receives birds that have just crossed the Gulf of Mexico and their abundance and composition may be associated with regional factors such as...

Genetic diversity in two insular populations of bobcats (Lynx rufus)

Duane Diefenbach, Cassandra Miller-Butterworth, Jessie Edson, Leslie Hansen, James Jordan, Tess Gingery & Amy Russell
We documented changes in genetic diversity in an isolated, reintroduced population of bobcats on Cumberland Island (CUIS), Georgia, USA, compared to another bobcat population on Kiawah Island, South Carolina, USA, that was naturally established and experiences limited immigration from the mainland. We compared the predictions of a novel population viability analysis (PVA) to empirical estimates of abundance and genetic diversity on CUIS and used our PVA to identify management actions that are likely to support...

Functional connectivity in a continuously distributed, migratory species as revealed by landscape genomics

Melanie E. F. LaCava, Roderick B. Gagne, Kyle D. Gustafson, Sara J. Oyler-McCance, Kevin L. Monteith, Hall Sawyer, Matthew J. Kauffman, Daniel J. Thiele & Holly B. Ernest
Maintaining functional connectivity is critical for the long-term conservation of wildlife populations. Landscape genomics provides an opportunity to assess long-term functional connectivity by relating environmental variables to spatial patterns of genomic variation resulting from generations of movement, dispersal, and mating behaviors. Identifying landscape features associated with gene flow at large geographic scales for highly mobile species is becoming increasingly possible due to more accessible genomic approaches, improved analytical methods, and enhanced computational power. We characterized...

Do fine-scale experiments underestimate predator consumption rates?

Lindsey Bruckerhoff, Casey Pennock & Keith Gido
Understanding ecological processes across spatial scales helps link observations and predictions from experiments to ecological patterns occurring at coarser scales relevant to management and conservation. Using fish, we experimentally manipulated the size of arenas to test the spatial scaling of predator-prey interactions. We measured variation in predator consumption and prey behavior (prey aggregation, spatial overlap with predators, and movement) across arena sizes. Variation in prey behavior across arena sizes was hypothesized to drive consumption patterns...

Short-term responses to a human-altered landscape do not affect fat dynamics of a migratory ungulate

Samantha Dwinnell, Hall Sawyer, , Jill Randall, Rusty Kaiser, Mark Thonhoff, Gary Fralick & Kevin Monteith
According to risk-sensitive foraging theory, animals should make foraging decisions that balance nutritional costs and gains to promote fitness. Human disturbance is a form of perceived risk that can prompt avoidance of risky habitat over the acquisition of food. Consequently, behavioral responses to perceived risk could induce nutritional costs. Population declines often coincide with increases in human disturbance, which likely is associated with direct and indirect habitat loss. Nevertheless, behavioral and physiological responses to perceived...

Lake food webs: Species invasion progressively disrupts the trophic structure of native food webs

Charles Wainright, Clint Muhlfeld, James Elser, Samuel Bourret & Shawn Devlin
Species invasions can have substantial impacts on native species and ecosystems, with important consequences for biodiversity. How these disturbances drive changes in the trophic structure of native food webs through time is poorly understood. Here, we quantify trophic disruption in freshwater food webs to invasion by an apex fish predator, lake trout, using an extensive stable isotope dataset across a natural gradient of uninvaded and invaded lakes in the northern Rocky Mountains, USA. Lake trout...

Sea otter sequence capture project data files

Annabel Beichman, Pooneh Kalhori, Christopher Kyriazis, Amber De Vries, Sergio Nigenda-Morales, Klaus-Peter Koepfli, Gisela Heckel, Yolanda Schramm, Andres Moreno-Estrada, Douglas Kennett, Mark Hylkema, James Bodkin, Kirk Lohmueller & Robert Wayne
Extinction or severe population contractions are rarely uniform across an entire species. However, because of the rapid onset of the fur trade in the 18th and 19th centuries, sea otters (Enhydra lutris) were systematically hunted to near extinction across their entire Northern Pacific range. Many sea otter populations were driven fully extinct, and the populations that survived suffered a rapid decline from 10-20,000 individuals per population to fewer than one hundred survivors. Each surviving remnant...

Data from: Hybridization alters growth and migratory life history expression of native trout

Jeffrey T. Strait, Lisa A. Eby, Ryan P. Kovach, Clint C. Muhlfeld, Matthew C. Boyer, Stephen J. Amish, Seth Smith, Winsor H. Lowe & Gordon Luikart
Human-mediated hybridization threatens many native species, but the effects of introgressive hybridization on life history expression are rarely quantified, especially in vertebrates. We quantified the effects of non-native rainbow trout admixture on important life history traits including growth and partial migration behavior in three populations of westslope cutthroat trout over five years. Rainbow trout admixture was associated with increased summer growth rates in all populations, and decreased spring growth rates in two populations with cooler...

Species mixture effects and climate influence growth, recruitment and mortality in Interior West U.S.A. Populus tremuloides - conifer communities

Christopher Looney, Wilfred Previant, John Bradford & Linda Nagel
Tree-species mixture effects (e.g., complementarity and facilitation) have been found to increase individual-tree productivity, lessen mortality, and improve recruitment in forests worldwide. By promoting more efficient and complete resource use, mixture effects may also lessen individual-tree-level water stress, thus improving drought-resistance. We investigated the influence of mixture effects on tree productivity, mortality, and recruitment across broad compositional and moisture gradients in high-elevation Interior West US mixed-conifer communities, where Populus tremuloides (trembling aspen) is the major...

Causes of delayed outbreak responses and their impacts on epidemic spread

Yun Tao, Matthew Ferrari, Katriona Shea, William Probeert, Michael Runge, Kevin Lafferty & Michael Tildesley
Livestock diseases have devastating consequences economically, socially, and politically across the globe. In certain systems, pathogens remain viable after host death, which enables residual transmissions from infected carcasses. Rapid culling and carcass disposal are well-established strategies for stamping out an outbreak and limiting its impact, however, wait-times for these procedures, i.e., response delays, are typically farm-specific and time-varying due to logistical constraints. Failing to incorporate variable response delays in epidemiological models may understate outbreak projections...

Vegetation characteristics and precipitation jointly influence grassland bird abundance beyond the effects of grazing management

Kristin Davis, David Augustine, Adrian Monroe & Cameron Aldridge
Grassland birds have experienced some of the steepest population declines of any guild of birds in North America. The shortgrass steppe contains some of North America’s most-intact grasslands, which makes the region particularly important for these species. Grassland birds differentially respond to variation in vegetation structure generated by spatiotemporally-varying disturbance like grazing management. However, understanding how species respond to characteristics beyond vegetation structure or grazing could better inform management for these species in the shortgrass...

Functional traits reveal the dominant drivers of long‐term community change across a North American Great Lake

James Sinclair, Michael Fraker, James Hood, Kenneth Frank, Mark DuFour, Ann Marie Gorman & Stuart Ludsin
The datasets here were used to determine annual sentinel fish species and trait composition in Lake Erie's western and central basins during 1969-2018 in relation to multiple anthropogenic stressors. Here, we provide three datasets, which are used in the paper by Sinclair et al. titled: "Functional traits reveal the dominant drivers of long-term community change across a North American Great Lake". Each dataset is provided as a separate tab in a single Excel worksheet. The...

Data from: Invasive hybridization has variable effects on survival among salmonid populations

Jeffrey Strait, Ryan Kovach, Lisa Eby, Clint Muhlfeld, Matthew Boyer, Stephen Amish, Paul Lukacs, Winsor Lowe & Gordon Luikart
Human-mediated hybridization threatens global biodiversity, but the fitness consequences of hybridization are poorly understood, especially in vertebrates. We used capture-recapture data from 5,249 individuals in three hybridizing populations of invasive rainbow trout (Oncorhynchus mykiss) and native cutthroat trout (O. clarkii) to quantify the effects of rainbow trout genetic admixture and environmental conditions on survival. Seasonal variation in environmental conditions interacted with individual admixture to influence seasonal survival. Overall, annual survival declined with admixture at the...

Consequences of migratory coupling of predators and prey when mediated by human actions

Navinder Singh, Frauke Ecke, Todd Katzner, Sumanta Bagchi, Per Sandstöm & Birger Hörnfeldt
Aim: Animal migrations influence ecosystem structure, dynamics, and persistence of predator and prey populations. The theory of migratory coupling postulates that aggregations of migrant prey can induce large-scale synchronized movements in predators, and this coupling is consequential for the dynamics of ecological communities. The degree to which humans influence these interactions remains largely unknown. We tested whether the creation of large resource pulses by humans such as seasonal herding of reindeer Rangifer tarandus and hunting...

Threading the needle: how humans influence predator-prey spatiotemporal interactions in a multiple-predator system

Asia Murphy, Duane Diefenbach, Mark Ternent, Matt Lovallo & David Miller
Perceived predation risk and the resulting antipredator behavior varies across space, time, and predator identity. Communities with multiple predators that interact and differ in their use of space, time of activity, and hunting mode create a complex landscape for prey to avoid predation. Anthropogenic presence and disturbance have the potential to shift interactions among predators and prey and the where and when encounters occur. We examined how spatiotemporal antipredator behavior of white-tailed deer fawns (Odocoileus...

Integrating ecosystem metabolism and consumer allochthony reveals nonlinear drivers in lake organic matter processing

Meredith Holgerson, Rachel Hovel, Patrick Kelly, Lauren Bortolotti, Jennifer Brentrup, Amber Bellamy, Samantha Oliver & Alexander Reisinger
Lakes process both terrestrial and aquatic organic matter, and the relative contribution from each source is often measured via ecosystem metabolism and terrestrial resource use in the food web (i.e., consumer allochthony). Yet, ecosystem metabolism and consumer allochthony are rarely considered together, despite possible interactions and potential for them to respond to the same lake characteristics. In this study, we compiled global datasets of lake gross primary production (GPP), ecosystem respiration (ER), and zooplankton allochthony...

Data from: Biocrusts do not differentially influence emergence and early establishment of native and non-native grasses

Cheryl McIntyre, Steven R. Archer, Katharine I. Predick & Jayne Belnap
Biological soil crusts (biocrusts) cover the soil surface of global drylands and interact with vascular plants. Biocrusts may influence the availability and nature of safe sites for plant recruitment and the susceptibility of an area to invasion by non-native species. Therefore, to investigate the potential role of biocrusts in invasive species management, we sought to determine if native and non-native grass recruitment in two North American deserts were differentially affected by biocrusts. We conducted a...

Microcoleus (Cyanobacteria) form watershed-wide populations without strong gradients in population structure

Keith Bouma-Gregson, Alex Crits-Christoph, Matthew Olm, Mary Power & Jillian Banfield
The relative importance of separation by distance and by environment to population genetic diversity can be conveniently tested in river networks, where these two drivers are often independently distributed over space. To evaluate the importance of dispersal and environmental conditions in shaping microbial population structures, we performed genome-resolved metagenomic analyses of benthic Microcoleus-dominated cyanobacterial mats collected in the Eel and Russian River networks (California, USA). The 64 Microcoleus genomes were clustered into three species that...

Shrub influence on soil carbon and nitrogen in a semi-arid grassland is mediated by precipitation and largely insensitive to livestock grazing

Heather Throop, Seth Munson, Nicole Hornslein & Mitchel McClaran
Dryland (arid and semi-arid) ecosystems globally provide more than half of livestock production and store roughly one-third of soil organic carbon (SOC). Biogeochemical pools are changing due toshrub encroachment, livestock grazing, and climate change. We assessed how vegetation microsite, grazing, and precipitation interacted to affect SOC and total nitrogen (TN) at a site with long-term grazing manipulations and well-described patterns of shrub encroachment across elevation and mean annual precipitation (MAP) gradients. We analyzed SOC and...

Data for impact of “non-lethal” tarsal clipping on bumble bees (Bombus vosnesenskii) may depend on queen stage and worker size

John Mola, Clara Stuligross, Maureen Page, Danielle Rutkowski & Neal Williams
Recent bumble bee declines have prompted the development of novel population monitoring tools, including the use of putatively non-lethal tarsal clipping to obtain genetic material. However, the potential side effects of tarsal clipping have only been tested in the worker caste of a single domesticated species, prompting the need to more broadly test whether tarsal clipping negatively affects sampled individuals. To determine if tarsal clipping reduces queen survivorship and colony establishment, we collected wild queens...

Resource selection functions based on hierarchical generalized additive models provide new insights into individual animal variation and species distributions

Jennifer McCabe, John Clare, Tricia Miller, Todd Katzner, Jeff Cooper, Scott Somershoe, David Hanni, Christine Kelly, Robert Sargent, Eric Soehren, Carrie Threadgill, Mercedes Maddox, Jonathan Stober, Mark Martell, Thomas Salo, Andrew Berry, Michael Lanzone, Melissa Braham & Christopher McClure
Habitat selection studies are designed to generate predictions of species distributions or inference regarding general habitat associations and individual variation in habitat use. Such studies frequently involve either individually indexed locations gathered across limited spatial extents and analyzed using resource selection functions (RSF), or spatially extensive locational data without individual resolution typically analyzed using species distribution models. Both analytical methodologies have certain desirable features, but analyses that combine individual- and population-level inference with flexible non-linear...

Registration Year

  • 2021

Resource Types

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  • United States Geological Survey
  • Colorado State University
  • Columbia University
  • University of California, Santa Barbara
  • Utah State University
  • Centre d'Etudes Biologiques de Chizé
  • Oregon State University
  • University of Wyoming
  • University of Maine
  • University of California, Berkeley