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Need and vision for global medium-resolution Landsat and Sentinel-2 data products
Global changes in climate and land use are threatening natural ecosystems, biodiversity, and the ecosystem services people rely on. This is why it is necessary to track and monitor spatiotemporal change at a level of detail that can inform science, management, and policy development. The current constellation of multiple Landsat and Sentinel-2 satellites collecting imagery at predominantly ≤30-m s
Authors
Volker C. Radeloff, David P. Roy, Mike Wulder, Martha Anderson, Bruce D. Cook, Christopher J. Crawford, Mark Friedl, Feng Gao, Noel Gorelick, Matthew Hansen, Sean Healey, Patrick Hostert, Glynn Hulley, Justin Huntington, Dave Johnson, Christopher Neigh, Alexei Lyapustin, Leo Lymburner, Nima Pahlevan, Jean-Francois Pekel, Theodore A. Scambos, Crystal Schaaf, Peter Strobl, Eric Vermote, Curtis Woodcock, Hankui K. Zhang, Zhe Zhu
A scaled Denil fishway for upstream passage of Arctic Grayling
Denil fishways have been used with varying success to help fish pass impediments to upstream passage such as low head dams or irrigation diversion structures. They have been tested for hydraulic and fish passage performance in laboratory and field settings, usually with only minor modifications to the fishway geometry or dimensions. We tested a reduced (0.6) scale prototype of the standard-sized D
Authors
Katey Plymesser, Matt Blank, Megan Conley, Kevin Kappenman, Joel Cahoon, David Dockery, Alexander V. Zale
Deltamethrin reduces survival of non-target small mammals
Context: Vector-borne diseases have caused global pandemics and were responsible for more human deaths than all other causes combined in prior centuries. In the past 60 years, prevention and control programs have helped reduce human mortality from vector-borne diseases, but impacts of those control programs on wildlife populations are not well documented. Insecticides are used to reduce vector-bor
Authors
Amanda R. Goldberg, Dean E. Biggins, Shantini Ramakrishnan, Jonathan W. Bowser, Courtney J. Conway, David A. Eads, Jeffrey Wimsatt
Do pharmaceuticals in the environment pose a risk to wildlife?
The vast majority of knowledge related to the question of, “To what extent do pharmaceuticals in the environment pose a risk to wildlife?”, stems from the Asian vulture crisis (>99% decline of some species of old-world vultures on the Indian subcontinent related to the veterinary use of the non-steroidal anti-inflammatory drug (NSAID) diclofenac). The hazard of diclofenac and other NSAIDs (carprof
Authors
Thomas G. Bean, Elizabeth A. Chadwick, Marta Herrero-Villar, Rafael Mateo, Vinny Naidoo, Barnett A. Rattner
Evaluating risks associated with capture and handling of mule deer for individual-based, long-term research
Capture and handling techniques for individual-based, long-term research that tracks the life history of animals by recapturing the same individuals for several years has vastly improved study inferences and our understanding of animal ecology. Yet there are corresponding risks to study animals associated with physical trauma or capture myopathy that can occur during or following capture events. R
Authors
Tayler N. LaSharr, Samantha P. H. Dwinnell, Brittany L. Wagler, Hall Sawyer, Rhiannon P. Jakopak, Anna C. Ortega, Luke R. Wilde, Matthew Kauffman, Katey S. Huggler, Patrick W. Burke, Miguel Valdez, Patrick Lionberger, Douglas G. Brimeyer, Brandon Scurlock, Jill Randall, Rusty C. Kaiser, Mark Thonhoff, Gary L. Fralick, Kevin L. Monteith
Lingering impacts of the 2014-2016 northeast Pacific marine heatwave on seabird demography in Cook Inlet, Alaska (USA)
A protracted period (2014-2016) of anomalously warm water in the northeast Pacific Ocean precipitated an extensive die-off of common murres Uria aalge (hereafter ‘murres’) during 2015-2016, accompanied by reduced colony attendance and reproductive success of murres and black-legged kittiwakes Rissa tridactyla (‘kittiwakes’) starting in 2015. Most murres died of starvation following a large-scale r
Authors
Sarah K. Schoen, Mayumi L. Arimitsu, Caitlin Elizabeth Marsteller, John F. Piatt
Nesting and post-fledging predation risk influence diel patterns of songbird fledging
Among stages of avian ontogeny, the act of nest departure or fledging is an abrupt transition into a new environment and a major leap toward independence for offspring. In altricial birds, the timing of fledging is notable in that many species tend to fledge early in the morning. Past studies have proposed nest predation as a key factor driving birds to fledge earlier in the morning (the ‘survival
Authors
Todd M. Jones, Scott J. Chiavacci, Thomas J. Benson, Michael P. Ward
Occurrence, abundance, movement, and habitat associations of Bonneville Cutthroat Trout in tributaries to Bear Lake, Idaho-Utah
Bonneville Cutthroat Trout (BCT) Oncorhynchus clarkii utah in Bear Lake, Idaho–Utah, is an important endemic and recreational species and plays a vital ecological role in systems throughout the basin. Although the distribution and abundance of BCT have declined due to anthropogenic disturbances, production of wild BCT in Bear Lake has increased over the past decade as a result of extensive habitat
Authors
Megan Heller, Jeff Dillon, Michael Quist
Offspring sex ratios are male-biased reflecting sex-biased dispersal in Idaho, USA, wolves.
Offspring sex ratios can vary widely across species, and the reasons for such variation have long intrigued ecologists. For group-living animals, predicting offspring sex ratios as a function of group and environmental characteristics can be challenging. Additionally, mortality of group members can upend traditional theory used to explain offspring sex ratios observed in populations. Gray wolves (
Authors
David Edward Ausband
Puget small streams monitoring program annual status report, water year 2020
This status report summarizes data collection from Summer 2020 for the Stormwater Action Monitoring (SAM) project.
Authors
Rich W. Sheibley
The vegetation dynamics of the monsoonal wetland of the Keoladeo National Park, India: A reassessment
As a result of a field trip in 1980 to the monsoonal wetland of the Keoladeo National Park, India, which was organized by Dr. Brij Gopal, a study of the vegetation dynamics of this wetland was initiated. The original hypothesis for this study was that the seasonal vegetation changes caused by the annual summer monsoon was a compressed habitat cycle. Habitat cycles are a characteristic of prairie p
Authors
Arnold G. van der Valk, Beth Middleton
Prioritizing imperiled native aquatic species for conservation propagation
Native aquatic species are in decline, and hatcheries can play an important role in stemming these losses until larger ecological issues are addressed. However, as more federal and state agencies face budget uncertainty and the number of imperiled species increases, it is necessary to develop a tool to prioritize species for conservation propagation. Our objective was to create prioritized lists o
Authors
Molly A. H. Webb, Christopher S. Guy, Hilary B. Treanor, Krissy W. Wilson, Cassie D. Mellon, Paul Abate, Harry J. Crockett, Jordan Hofmeier, Chelsey Pasbrig, Patrick Isakson