Modeling effects of crop production, energy development and conservation-grassland loss on avian habitat
Jill A. Shaffer, Cali L. Roth, David M. Mushet
2019, PLoS ONE (14) 1-17
Birds are essential components of most ecosystems and provide many services valued by society. However, many populations have undergone striking declines as their habitats have been lost or degraded by human activities. Terrestrial grasslands are vital habitat for birds in the North American Prairie Pothole Region (PPR), but grassland conversion...
To what extent is drought-induced tree mortality a natural phenomenon?
R. Fensham, Boris Laffineur, Craig D. Allen
2019, Global Ecology and Biogeography (287) 365-373
AimCatastrophic forest mortality due to more extreme rainfall deficits and higher temperatures under future climate scenarios has been predicted. The aim of this study is to explore the magnitude of historical drought-induced tree mortality under pre-warming conditions.LocationNorth-eastern Australia.Time period1845–2017.<h3 id="geb12858-sec-0004-title" class="article-section__sub-title...
A seascape-scale habitat model to support management of fishing impacts on benthic ecosystems
T. Scott Smeltz, Bradley Harris, John Olson, Suresh Sethi
2019, Canadian Journal of Fisheries and Aquatic Sciences (76) 1836-1844
Minimizing fishing impacts on seafloor ecosystems is a growing focus of ocean management; however, few quantitative tools exist to guide seascape-scale habitat management. To meet these needs, we developed a model to assess benthic ecosystem impacts from fishing gear contact. The habitat impacts model is cast in discrete time and...
Improving estimates and forecasts of lake carbon dynamics using data assimilation
Jacob Aaron Zwart, Oleksandra Hararuk, Yves Prairie, Stuart E. Jones, Christopher T. Solomon
2019, Limnology and Oceanography: Methods (17) 97-111
Lakes are biogeochemical hotspots on the landscape, contributing significantly to the global carbon cycle despite their small areal coverage. Observations and models of lake carbon pools and fluxes are rarely explicitly combined through data assimilation despite successful use of this technique in other fields. Data assimilation...
Early-warning signals of individual tree mortality based on annual radial growth
Maxime Cailleret, Vasilis Dakos, Steven Jansen, Elisabeth M. R. Robert, Tuomas Aakala, Mariano M. Amoroso, Joe A. Antos, Christof Bigler, Harald Bugmann, Marco Caccianaga, Jesus-Julio Camarero, Paolo Cherubini, Marie R. Coyea, Katarina Cufar, Adrian J. Das, Hendrik Davi, Guillermo Gea-Izquierdo, Sten Gillner, Laurel J. Haavik, Henrik Hartmann, Ana-Maria Heres, Kevin R. Hultine, Pavel Janda, Jeffrey M. Kane, Viachelsav I. Kharuk, Thomas Kitzberger, Tamir Klein, Tom Levanic, Juan-Carlos Linares, Fabio Lombardi, Harri Makinen, Ilona Mészáros, Juha M. Metsaranta, Walter Oberhuber, Andreas Papadopoulos, Any Mary Petritan, Brigitte Rohner, Gabriel Sanguesa-Barreda, Jeremy M. Smith, Amanda B. Stan, Dejan B. Stojanovic, Maria-Laura Suarez, Miroslav Svoboda, Volodymyr Trotsiuk, Ricardo Villalba, Alana R. Westwood, Peter H. Wyckoff, Jordi Martínez-Vilalta
2019, Frontiers in Plant Science (9) 1-14
Tree mortality is a key driver of forest dynamics and its occurrence is projected to increase in the future due to climate change. Despite recent advances in our understanding of the physiological mechanisms leading to death, we still lack robust indicators of mortality risk that could be applied at the...
Methods of environmental valuation
John B. Loomis, Christopher Huber, Leslie Richardson
2019, Book chapter, Handbook of Regional Science
Commensurate valuation of market and nonmarket public goods allows for a more valid benefit-cost analysis. Economic methods for valuing nonmarket public goods include actual behavior-based revealed preference methods, such as the hedonic property method for urban-suburban public goods and travel cost models for outdoor recreation. For valuing proposed public goods...
Short-term effects of ambient air pollution and cardiovascular events in Shiraz, Iran, 2009 to 2015
Zahra Soleimani, Ali Darvishi Boloorani, Reza Khalifeh, Dale W. Griffin, Alireza Mesdaghinia
2019, Environmental Science and Pollution Research (26) 6359-6367
Air pollution and dust storms are associated with increased cardiovascular hospital admissions. The aim of this study was to investigate the association between short-term exposure to ambient air pollutants and CVD (cardiovascular disease) events in a long-term observational period. The study included the events of cardiovascular diseases (namely coronary artery...
Deer harvest variation in small and large management units in Pennsylvania
Duane R. Diefenbach, Christopher S. Rosenberry
2019, Wildlife Society Bulletin (43) 71-76
Large game management units often lead to criticisms from hunters because they assume smaller units possess less variation in wildlife populations and more closely represent their local area. In 2003, Pennsylvania, USA, replaced smaller, socio-political county-based management units with larger wildlife management units (WMUs). We tested the hypothesis that smaller...
Crustal structure of the northern Harrat Rahat volcanic field (Saudi Arabia) from gravity and aeromagnetic data
Victoria E. Langenheim, Brent Ritzinger, Hani M. Zahran, Adel Shareef, Maher Al-dahri
2019, Tectonophysics (750) 9-21
New gravity data reveal a prominent negative anomaly along the main vent axis of the northern Harrat Rahat volcanic field in Saudi Arabia. The low continues north of the volcanic field onto exposures of Proterozoic rocks, indicating that the low is caused not only by the volcanic field (and...
A comparison of age- and size-structured assessment models applied to a stock of cisco in Thunder Bay, Ontario
Nicholas C Fisch, James R. Bence, Jared T. Myers, Eric K. Berglund, Daniel Yule
2019, Fisheries Research (209) 86-100
Stock assessments are critical to modern fisheries management, supporting the calculation of key reference variables used to make informed management decisions. However, there is still considerable uncertainty as to which class of assessment models is appropriate to use under different circumstances. A common class of models used when age data...
Scientific integrity issues in environmental toxicology and chemistry: Improving research transparency, reproducibility, and credibility
Christopher A. Mebane, Anne Fairbrother, Thomas Augspurger, Timothy J. Canfield, William Goodfellow, Patrick Guiney, Anne LeHuray, Lorraine Maltby, David Mayfield, Michael McLaughlin, Lisa Ortego, Tamar Schlekat, Richard P. Scroggins, John Sumpter, Tim Verslycke
2019, Integrated Environmental Assessment and Management (15) 320-344
High‐profile reports of detrimental scientific practices leading to retractions in the scientific literature contribute to lack of trust in scientific experts. Although the bulk of these have been in the literature of other disciplines, environmental toxicology and chemistry are not free from problems. While we believe that egregious misconduct such...
Main stem and off-channel habitat use by juvenile Chinook salmon in a sub-Arctic riverscape
Brock M. Huntsman, Jeffrey A. Falke
2019, Freshwater Biology (64) 433-446
Poor growth and survival in freshwater and marine environments have been implicated as responsible for Chinook salmon (Oncorhynchus tshawytscha) declines across Alaska.Lateral connectivity of river main stems with off-channel habitats may play an integral role in sustaining Alaskan salmonid populations because off-channel habitats commonly provide greater growth opportunities than...
Warming effects of spring rainfall increase methane emissions from thawing permafrost
Rebecca B. Neumann, C.J. Moorberg, J.D. Lundquist, J.C. Turner, Mark P. Waldrop, Jack W. McFarland, E.S. Euskirchen, C.W. Edgar, M. R. Turetsky
2019, Geophysical Research Letters (46) 1393-1401
Methane emissions regulate the near‐term global warming potential of permafrost thaw, particularly where loss of ice‐rich permafrost converts forest and tundra into wetlands. Northern latitudes are expected to get warmer and wetter, and while there is consensus that warming will increase thaw and methane emissions, effects of increased precipitation are...
Geochemical and petrological diversity of mafic magmas from Mount St. Helens
Maren Wanke, Olivier Bachmann, Albrecht von Quadt Wykradt-Huchtenbruck, Torsten W. Vennemann, Michael A. Clynne
2019, Contributions to Mineralogy and Petrology (174)
Quaternary eruptive products in the Cascade arc include a variety of different basalt types. At Mount St. Helens (MSH), the most active volcano in the Cascades throughout the last 35 ka, three different mafic endmembers erupted at the end of the Castle Creek period (1900–1700 years B.P.): (1) high-field strength element (HFSE)-rich...
Multiple approaches to surface water quality assessment provide insight for small streams experiencing oil and natural gas development
Annika W. Walters, Carlin Girard, Richard H. Walker, Aida Farag, David A. Alvarez
2019, Integrated Environmental Assessment and Management (15) 385-397
Historic, current, and future oil and natural gas development can affect water quality in streams flowing through developed areas. We compared small stream drainages in a semi-arid landscape with varying amounts of disturbance from oil and natural gas development to examine potential effects of this development on surface water quality....
Landscape evolution of a fluvial sediment-rich Avicennia marina mangrove forest: Insights from seasonal and inter-annual surface-elevation dynamics
Andrew Swales, Glen Reeve, Donald R. Cahoon, Catherine Lovelock
2019, Ecosystems (22) 1232-1255
Mangrove forests are vulnerable to accelerated sea-level rise associated with climate warming because they occupy a relatively narrow zone on the mid-to-upper-intertidal flats. The fate of these ecosystems largely depends on their capacity to accrete sediment at a rate sufficient to maintain their elevation relative to sea level. We investigated...
Gradients in fish feeding guilds along a reservoir cascade
Leandro E. Miranda, R.V. Granzotti, D.J. Dembkowski
2019, Aquatic Sciences (81)
The river continuum concept predicts a longitudinal gradient in the structure and functioning of rivers. Impoundments potentially change this continuum by reorganizing nutrient transport and storage in the system. To determine if predictions made by the river continuum concept relative to fish assemblage trophic structure hold for a temperate river...
The NASA Roadmap to Ocean Worlds
A. Noble Hendrix, T. Hurford, L.M. Barge, Michael T. Bland, J.S. Bowman, W. Brinckerhoff, B. J. Buratti, M. Cable, J. C. Castillo-Rogez, G. C. Collins, S. Diniega, C.R. German, A.G. Hayes, T.M. Hoehler, S. Mehran Hosseini, C. Howett, A.S. McEwen, C. Neish, M. Neveu, T.A. Nordheim, G.W. Patterson, Donald A. Patthoff, C. Phillips, A. Rhoden, B. Schmidt, K. Singer, J. M. Soderblom, S.D. Vance
2019, Astrobiology (19)
In this article, we summarize the work of the NASA Outer Planets Assessment Group (OPAG) Roadmaps to Ocean Worlds (ROW) group. The aim of this group is to assemble the scientific framework that will guide the exploration of ocean worlds, and to identify and prioritize science objectives...
Late-Quaternary vegetation, climate, and fire history of the Southeast Atlantic Coastal Plain based on a 30,000-yr multiple-proxy record from White Pond, South Carolina (USA)
Teresa R. Krause, James M. Russell, Rui Zhang, John W. Williams, Stephen Jackson
2019, Quaternary Research 861-880
The patterns and drivers of late Quaternary vegetation dynamics in the southeastern United States are poorly understood due to low site density, problematic chronologies, and a paucity of independent paleoclimate proxy records. We present a well-dated (15 accelerator mass spectrometry 14C dates)...
A preliminary report of ongoing research of the ecology of Black-capped Petrel (Pterodroma hasitata) in Sierra de Bahoruco, Dominican Republic – I: GPS tracking of breeding adults
Yvan G. Satge, Ernst Rupp, Patrick G.R. Jodice
2019, Report
The Black-capped Petrel (also known regionally as Diablotin) is a gadfly petrel endemic to the Caribbean. Population estimates based on at-sea observations range from 2,000 to 4,000 individuals, with a fragmented breeding population estimated at 500 to 1,000 pairs. At sea, the expansive marine range of the species exposes it...
Natural resource management decision-making under climate uncertainty: Building social-ecological resilience in southwestern Colorado
Nina Burkardt, Marcie Bidwell, Katherine Clifford, Betsy Neely, Patricia Orth, Imtiaz Rangwala, Renee Rondeau, Carina Wyborn, Laurie Yung
2019, Report
The goal of this project was to facilitate climate change adaptation that contributes to social-ecological resilience, ecosystem and species conservation, and sustainable human communities in southwestern Colorado. The team developed and piloted integrated adaptation planning tools and principles that merge the strengths of the iterative scenario process, the Adaptation for...
Demographic and genetic description of Greenland’s only indigenous Atlantic salmon Salmo salar population
Jo Vegar Arnekleiv, Jan Grimsrud Davidsen, Timothy F Sheehan, Sarah J Lehnert, Ian R Bradbury, L Ronning, Aslak Darre Sjursen, G Kjaerstad, Barbara A. Lubinski, Kjell J Nilssen
2019, Journal of Fish Biology (94) 154-164
A survey of the Kapisillit River system was conducted in 2005 and 2012 to study the only indigenous Atlantic salmon Salmo salar population in Greenland. Little is known about its characteristics or its relationship with other S. salar populations across the species range. Juvenile S. salar were captured in all...
Quarterly wildlife mortality report January 2019
Bryan J. Richards, Barbara Bodenstein, Robert J. Dusek, Tonie E. Rocke, Katherine L. D. Richgels
2019, Wildlife Disease Association Newsletter 22-23
The USGS National Wildlife Health Center (NWHC) Quarterly Mortality Report provides brief summaries of epizootic mortality and morbidity events by quarter. The write-ups, highlighting epizootic events and other wildlife disease topics of interest, are published in the Wildlife Disease Association quarterly newsletter. A link is provided in this WDA newsletter...
Eruption and fountaining dynamics of selected 1985–1986 high fountaining episodes at Kīlauea volcano, Hawai'i, from quantitative vesicle microtexture analysis
S. J. Holt, R. J. Carey, B. F. Houghton, Tim R. Orr, J. McPhie, S. Feig
2019, Journal of Volcanology and Geothermal Research (369) 21-34
Tephra from the early Hawaiian fountaining episodes of the ongoing eruption of Pu'u 'Ō'ō in the East Rift Zone (ERZ) of Kīlauea provides an opportunity to study the vesicle microtextures of pyroclasts erupted from a single vent over a prolonged period of time. We report the results of microtextural analysis of pyroclasts from...
Trophic plasticity and the invasion of a renowned piscivore: A diet synthesis of northern pike (Esox lucius) from the native and introduced ranges in Alaska, U.S.A.
C. Nathan Cathcart, Kristine J. Dunker, Thomas P. Quinn, Adam J. Sepulveda, Frank A. von Hippel, Andrew Wizik, Daniel B. Young, Peter A.H. Westley
2019, Biological Invasions (21) 1379-1392
The invasion of non-native fishes is a leading cause of extinction and imperilment of native freshwater fishes. Evidence suggests that introduced species with generalist diets have the potential for greatest impacts through competition and predation even though populations are often comprised of specialist individuals. The northern pike (Esox lucius), a...
