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A sagebrush conservation design to proactively restore America’s sagebrush biome
A working group of experts with diverse professional backgrounds and disciplinary expertise was assembled to conceptualize a spatially explicit conservation design to support and inform the Sagebrush Conservation Strategy Part 2. The goal was to leverage recent advancements in remotely sensed landcover products to develop spatially and temporally explicit maps of sagebrush rangeland condition and
Authors
Kevin Doherty, David M. Theobald, John B. Bradford, Lief A. Wiechman, Geoffrey Bedrosian, Chad S. Boyd, Matthew Cahill, Peter S. Coates, Megan K. Creutzburg, Michele R. Crist, Sean P. Finn, Alexander V. Kumar, Caitlin E. Littlefield, Jeremy D. Maestas, Karen L. Prentice, Brian G. Prochazka, Thomas E. Remington, William D. Sparklin, John C. Tull, Zachary Wurtzebach, Katherine A. Zeller
Estimating Pacific walrus abundance and survival with multievent mark-recapture models
Arctic marine ecosystems are undergoing rapid physical and biological change associated with climate warming and loss of sea ice. Sea ice loss will impact many species through altered spatial and temporal availability of resources. In the Bering and Chukchi Seas, the Pacific walrus Odobenus rosmarus divergens is one species that could be impacted by rapid environmental change, and thus, population
Authors
William S. Beatty, Patrick R. Lemons, Jason P. Everett, Cara J. Lewis, Rebecca L. Taylor, Robert J. Lynn, Suresh A. Sethi, Lori T. Quakenbush, John J. Citta, Michelle Kissling, Natalia Kryukova, John K. Wennburg
Multi-objective modeling as a decision-support tool for free-roaming horse management
Decisions related to controversial problems in natural resource management receive the greatest support when they account for multiple objectives of stakeholders in a structured and transparent fashion. In the United States, management of free-roaming horses (Equus caballus; horses) is a controversial multiple-objective problem because disparate stakeholder groups have varying objectives and opini
Authors
Brian Patrick Folt, Kathryn A. Schoenecker, L. Stefan Ekernas
Status of landbirds in the National Park of American Samoa
The National Park of American Samoa (NPSA) was surveyed in 2011 and 2018 using point-transect distance sampling to estimate trends in landbird distribution, composition, population density, and abundance. Surveys were conducted within the Ta‘ū Unit and Tutuila Unit, each on separate islands of American Samoa. We detected a total of 14 species during surveys and there were sufficient detections of
Authors
Seth Judge, Richard J. Camp, Visa Vaivai, Patrick J. Hart
Laysan albatross exhibit complex behavioral plasticity in the subtropical and subarctic North Pacific Ocean
Animals that regularly traverse habitat extremes between the subtropics and subarctic are expected to exhibit foraging behaviors that respond to changes in dynamic ocean habitats, and these behaviors may facilitate adaptations to novel and changing climates. During the chick-provisioning stage, Laysan albatross Phoebastria immutabilis parents regularly undertake short- and long-distance foraging t
Authors
Morgan Elizabeth Gilmour, Jonathan J. Felis, Michelle M. Hester, Lindsay C. Young, Josh Adams
Status of forest birds on Tinian Island, Commonwealth of the Northern Mariana Islands, with an emphasis on the Tinian monarch (Monarcha takatsukasae) (Passeriformes; Monarchidae)
Landbird populations on Tinian Island have been periodically surveyed since 1982 to evaluate the status of non-native and native landbirds. We report the results of surveys in 2013 and the observed changes during 31 years in species population trends based on surveys since 1982. A total of 11 native and 3 non-native species were detected during the 2013 survey. Population sizes were estimated usin
Authors
Rick L Spalding, Richard J. Camp, Paul C. Banko, Nathan C Johnson, Angela D Anders
Testing the ShakeAlert earthquake early warning system using synthesized earthquake sequences
We test the behavior of the United States (US) West Coast ShakeAlert earthquake early warning (EEW) system during temporally close earthquake pairs to understand current performance and limitations. We consider performance metrics based on source parameter and ground‐motion forecast accuracy, as well as on alerting timeliness. We generate ground‐motion times series for synthesized earthquake seque
Authors
Maren Böse, Jennifer Andrews, Colin T O'Rourke, Deborah L. Kilb, Angela Lux, Julian Bunn, Jeffrey McGuire
Perceptions of conservation introduction to inform decision support among U.S. Fish and Wildlife Service employees
Executive SummaryAround the globe, fish and wildlife managers are facing increasingly complex management issues because of multiscale ecological effects like climate change, species invasion, and land-use change. Managers seeking to prevent extinctions or preserve ecosystems are increasingly considering more interventionist techniques to overcome the resulting changes. Among those techniques, tran
Authors
Nicholas Cole, Julia B. Goolsby, Amanda E. Cravens
Loss of street tree canopy increases stormwater runoff
Urban forests have largely been overlooked for the role they play in reducing stormwater runoff volume by using hydrologic processes such as interception (rainfall intercepted by tree canopy), evapotranspiration (the transfer of water from vegetation into the atmosphere) and infiltration (percolation of rainwater into the Earth’s soil). Early research into the effects of trees on urban stormwater
Authors
William R. Selbig, Steven P. Loheide, William Shuster, Bryant C. Scharenbroch, Robert C. Coville, James Kruegler, William Avery, Ralph J. Haefner, David Nowak
Undeveloped and developed phases in the centennial evolution of a barrier-marsh-lagoon system: The case of Long Beach Island, New Jersey
Barrier islands and their associated backbarrier environments protect mainland population centers and infrastructure from storm impacts, support biodiversity, and provide long-term carbon storage, among other ecosystem services. Despite their socio-economic and ecological importance, the response of coupled barrier-marsh-lagoon environments to sea-level rise is poorly understood. Undeveloped barri
Authors
Christopher Tenebruso, Shane Nichols-O'Neill, Jorge Lorenzo-Trueba, Daniel J. Ciarletta, Jennifer L. Miselis
Conflict of energies: Spatially modeling mule deer caloric expenditure in response to oil and gas development
ContextWildlife avoid human disturbances, including roads and development. Avoidance and displacement of wildlife into less suitable habitat due to human development can affect their energy expenditures and fitness. The heart rate and oxygen uptake of large mammals varies with both natural aspects of their habitat (terrain, climate, predators, etc.) and anthropogenic influence (noise, light, fragm
Authors
Samuel Norton Chambers, Miguel L. Villarreal, Olivia Jane Marie Duane, Seth M. Munson, Erica Francis Stuber, Gayle L Tyree, Eric K Waller, Michael C. Duniway
Postbreeding movements and molting ecology of female gadwalls and mallards
The wing molt is an important annual life-history event that occurs in waterfowl and molt site selection can play an important role in determining survival. We tracked postbreeding movements of gadwall (Mareca strepera) and mallard (Anas platyrhynchos) females that bred in the Suisun Marsh (Suisun) of California, USA, to determine molt site selection and wing molt chronology. We attached backpack
Authors
Jeffrey D Kohl, Michael L. Casazza, Cory T. Overton, Mark P. Herzog, Josh T. Ackerman, Cliff L. Feldheim, John M. Eadie