Frequencies of decision making and monitoring in adaptive resource management
Byron K. Williams, Fred A. Johnson
2017, PLoS ONE (12)
Adaptive management involves learning-oriented decision making in the presence of uncertainty about the responses of a resource system to management. It is implemented through an iterative sequence of decision making, monitoring and assessment of system responses, and incorporating what is learned into future decision making. Decision making at each point...
Moving forward in circles: Challenges and opportunities in modeling population cycles
Frederic Barraquand, Stilianos Louca, Karen C Abbott, Christina A Cobbold, Flora Cordoleani, Donald L. DeAngelis, Bret D Elderd, Jeremy W Fox, Priscilla Greenwood, Frank M Hilker, Dennis Murray, Christopher R Stieha, Rachel C. Taylor, Kelsey Vitense, Gail Wolkowicz, Rebecca C Tyson
2017, Ecology Letters (20) 1074-1092
Population cycling is a widespread phenomenon, observed across a multitude of taxa in both laboratory and natural conditions. Historically, the theory associated with population cycles was tightly linked to pairwise consumer–resource interactions and studied via deterministic models, but current empirical and theoretical research reveals a much richer basis for ecological...
Seasonal variability in particulate matter source and composition to the depositional zone of Baltimore Canyon, U.S. Mid-Atlantic Bight
Nancy G. Prouty, Furu Mienis, P. Campbell, E. Brendan Roark, Andrew Davies, Craig M. Robertson, Gerard Duineveld, Steve W. Ross, M. Rhodes, Amanda W.J. Demopoulos
2017, Deep-Sea Research Part I: Oceanographic Research Papers (127) 77-89
Submarine canyons are often hotspots of biomass and productivity in the deep sea. However, the majority of deep-sea canyons remain poorly sampled. Using a multi-tracer approach, results from a detailed geochemical investigation from a year-long sediment trap deployment reveals details concerning the source, transport, and fate of particulate matter...
The role of the North American Breeding Bird Survey in conservation
Marie-Anne R. Hudson, Charles M. Francis, Kate J. Campbell, Constance M. Downes, Adam C. Smith, Keith L. Pardieck
2017, Condor (119) 526-545
The North American Breeding Bird Survey (BBS) was established in 1966 in response to a lack of quantitative data on changes in the populations of many bird species at a continental scale, especially songbirds. The BBS now provides the most reliable regional and continental trends and annual indices of abundance...
Combined analysis of roadside and off-road breeding bird survey data to assess population change in Alaska
Colleen M. Handel, John R. Sauer
2017, Condor (119) 557-575
Management interest in North American birds has increasingly focused on species that breed in Alaska, USA, and Canada, where habitats are changing rapidly in response to climatic and anthropogenic factors. We used a series of hierarchical models to estimate rates of population change in 2 forested Bird Conservation Regions (BCRs)...
Life histories and conservation of long-lived reptiles, an illustration with the American crocodile (Crocodylus acutus)
Venetia Briggs-Gonzalez, Christophe Bonefant, Mathieu Basille, Michael S. Cherkiss, Jeff Beauchamp, Frank J. Mazzotti
2017, Journal of Animal Ecology (86) 1102-1113
Successful species conservation is dependent on adequate estimates of population dynamics, but age-specific demographics are generally lacking for many long-lived iteroparous species such as large reptiles. Accurate demographic information allows estimation of population growth rate, as well as projection of future population sizes and quantitative analyses of...
The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States
John D. Horton, Carma A. San Juan, Douglas B. Stoeser
2017, Data Series 1052
The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States (https://doi. org/10.5066/F7WH2N65) represents a seamless, spatial database of 48 State geologic maps that range from 1:50,000 to 1:1,000,000 scale. A national digital geologic map database is essential in interpreting other datasets that support numerous types of national-scale studies...
Timescales of mixing and storage for Keanakāko‘i Tephra magmas (1500-1823 C.E.), Kīlauea Volcano, Hawai‘i
Kendra J. Lynn, Michael O. Garcia, Thomas Shea, Fidel Costa, Donald A. Swanson
2017, Contributions to Mineralogy and Petrology (172)
The last 2500 years of activity at Kīlauea Volcano (Hawai‘i) have been characterized by centuries-long periods dominated by either effusive or explosive eruptions. The most recent period of explosive activity produced the Keanakāko‘i Tephra (KT; ca. 1500–1820 C.E.) and occurred after the collapse of the summit caldera (1470–1510 C.E.). Previous studies...
Geologic field-trip guide to Mount Shasta Volcano, northern California
Robert L. Christiansen, Andrew T. Calvert, Timothy L. Grove
2017, Scientific Investigations Report 2017-5022-K3
The southern part of the Cascades Arc formed in two distinct, extended periods of activity: “High Cascades” volcanoes erupted during about the past 6 million years and were built on a wider platform of Tertiary volcanoes and shallow plutons as old as about 30 Ma, generally called the “Western Cascades.”...
Assessment of undiscovered continuous gas resources in the Amu Darya Basin Province of Turkmenistan, Uzbekistan, Iran, and Afghanistan, 2017
Christopher J. Schenk, Marilyn E. Tennyson, Tracey J. Mercier, Sarah J. Hawkins, Stephanie B. Gaswirth, Kristen R. Marra, Timothy R. Klett, Phuong A. Le, Michael E. Brownfield, Cheryl A. Woodall
2017, Fact Sheet 2017-3058
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean undiscovered, technically recoverable continuous resources of 35.1 trillion cubic feet of gas in the Amu Darya Basin Province of Turkmenistan, Uzbekistan, Iran, and Afghanistan....
Geologic field-trip guide to the Lassen segment of the Cascades Arc, northern California
Michael A. Clynne, L.J. Patrick Muffler
2017, Scientific Investigations Report 2017-5022-K2
This field-trip guide provides an overview of Quaternary volcanism in and around Lassen Volcanic National Park, California, emphasizing the stratigraphy of the Lassen Volcanic Center. The guide is designed to be self-guided and to focus on geologic features and stratigraphy that can be seen easily from the road network....
Lionfish (Pterois spp.) invade the upper-bathyal zone in the western Atlantic
Erika Gress, Dominic A Andradi-Brown, Lucy Woodall, Pamela J. Schofield, Karl Stanley, Alex D. Rogers
2017, PeerJ
Non-native lionfish have been recorded throughout the western Atlantic on both shallow and mesophotic reefs, where they have been linked to declines in reef health. In this study we report the first lionfish observations from the deep sea (>200 m) in Bermuda and Roatan, Honduras, with lionfish observed to a...
Geologic field-trip guide to Medicine Lake Volcano, northern California, including Lava Beds National Monument
Julie M. Donnelly-Nolan, Timothy L. Grove
2017, Scientific Investigations Report 2017-5022-K1
Medicine Lake volcano is among the very best places in the United States to see and walk on a variety of well-exposed young lava flows that range in composition from basalt to rhyolite. This field-trip guide to the volcano and to Lava Beds National Monument, which occupies part of the...
The influence of local- and landscape-level factors on wetland breeding birds in the Prairie Pothole Region of North and South Dakota
Lawrence D. Igl, Jill A. Shaffer, Douglas H. Johnson, Deborah A. Buhl
2017, Open-File Report 2017-1096
We examined the relationship between local- (wetland) and landscape-level factors and breeding bird abundances on 1,190 depressional wetlands in the Prairie Pothole Region of North and South Dakota during the breeding seasons in 1995–97. The surveyed wetlands were selected from five wetland classes (alkali, permanent, semipermanent, seasonal, or temporary), two...
Minor metals and renewable energy—Diversifying America’s energy sources
Sheryl A. Singerling, Nedal T. Nassar
2017, Fact Sheet 2017-3061
Solar photovoltaic (PV) and wind turbine technologies are projected to make up an increasing proportion of electricity generation capacity in the United States in the coming decades. By 2050, they will account for 36 percent (or 566 gigawatts) of capacity compared with about 11 percent (or 118 gigawatts) in 2016...
Agricultural irrigated land-use inventory for Polk County, Florida, 2016
Richard L. Marella, Darbi Berry, Joann F. Dixon
2017, Open-File Report 2017-1082
An accurate inventory of irrigated crop acreage is not available at the level of resolution needed to better estimate agricultural water use or to project future water demands in many Florida counties. A detailed digital map and summary of irrigated acreage was developed for Polk County, Florida, during the 2016...
Streamflow characteristics and trends along Soldier Creek, Northeast Kansas
Kyle E. Juracek
2017, Scientific Investigations Report 2017-5061
Historical data for six selected U.S. Geological Survey streamgages along Soldier Creek in northeast Kansas were used in an assessment of streamflow characteristics and trends. This information is required by the Prairie Band Potawatomi Nation for the effective management of tribal water resources, including drought contingency planning. Streamflow data for...
Water-level altitudes 2017 and water-level changes in the Chicot, Evangeline, and Jasper Aquifers and compaction 1973–2016 in the Chicot and Evangeline Aquifers, Houston-Galveston region, Texas
Mark C. Kasmarek, Jason K. Ramage
2017, Scientific Investigations Report 2017-5080
Most of the land-surface subsidence in the Houston-Galveston region, Texas, has occurred as a direct result of groundwater withdrawals for municipal supply, commercial and industrial use, and irrigation that depressured and dewatered the Chicot and Evangeline aquifers, thereby causing compaction of the aquifer sediments, mostly in the fine-grained silt and...
Overview for geologic field-trip guides to Mount Mazama, Crater Lake Caldera, and Newberry Volcano, Oregon
Charles R. Bacon, Julie M. Donnelly-Nolan, Robert A. Jensen, Heather M. Wright
2017, Scientific Investigations Report 2017-5022-J
These field-trip guides were written for the occasion of the International Association of Volcanology and Chemistry of the Earth’s Interior (IAVCEI) quadrennial scientific assembly in Portland, Oregon, in August 2017. The guide to Mount Mazama and Crater Lake caldera is an updated and expanded version of the guide (Bacon, 1989)...
Integrating spatially explicit representations of landscape perceptions into land change research
Monica Dorning, Derek B. Van Berkel, Darius J. Semmens
2017, Current Landscape Ecology Reports (2) 73-88
Purpose of ReviewHuman perceptions of the landscape can influence land-use and land-management decisions. Recognizing the diversity of landscape perceptions across space and time is essential to understanding land change processes and emergent landscape patterns. We summarize the role of landscape perceptions in the land change...
Field-trip guide to mafic volcanism of the Cascade Range in Central Oregon—A volcanic, tectonic, hydrologic, and geomorphic journey
Natalia I. Deligne, Daniele Mckay, Richard M. Conrey, Gordon E. Grant, Emily R. Johnson, Jim O’Connor, Kristin Sweeney
2017, Scientific Investigations Report 2017-5022-H
The Cascade Range in central Oregon has been shaped by tectonics, volcanism, and hydrology, as well as geomorphic forces that include glaciations. As a result of the rich interplay between these forces, mafic volcanism here can have surprising manifestations, which include relatively large tephra footprints and extensive lava flows, as...
Overview for geologic field-trip guides to volcanoes of the Cascades Arc in northern California
L.J. Patrick Muffler, Julie M. Donnelly-Nolan, Timothy L. Grove, Michael A. Clynne, Robert L. Christiansen, Andrew T. Calvert, Juliet Ryan-Davis
2017, Scientific Investigations Report 2017-5022-K
The California Cascades field trip is a loop beginning and ending in Portland, Oregon. The route of day 1 goes eastward across the Cascades just south of Mount Hood, travels south along the east side of the Cascades for an overview of the central Oregon volcanoes (including Three Sisters and...
Surface morphology of caldera-forming eruption deposits revealed by lidar mapping of Crater Lake National Park, Oregon- Implications for emplacement and surface modification
Joel E. Robinson, Charles R. Bacon, Jon J. Major, Heather M. Wright, James W. Vallance
2017, Journal of Volcanology and Geothermal Research (342) 61-78
Large explosive eruptions of silicic magma can produce widespread pumice fall, extensive ignimbrite sheets, and collapse calderas. The surfaces of voluminous ignimbrites are rarely preserved or documented because most terrestrial examples are heavily vegetated, or severely modified by post-depositional processes. Much research addresses the internal sedimentary characteristics, flow processes, and...
Modified mercalli intensities for nine earthquakes in central and western Washington between 1989 and 1999
Thomas M. Brocher, James W. Dewey, John F. Cassidy
2017, Open-File Report 2017-1104
We determine Modified Mercalli (Seismic) Intensities (MMI) for nine onshore earthquakes of magnitude 4.5 and larger that occurred in central and western Washington between 1989 and 1999, on the basis of effects reported in postal questionnaires, the press, and professional collaborators. The earthquakes studied include four earthquakes of M5 and...
Evidence of compounded disturbance effects on vegetation recovery following high-severity wildfire and spruce beetle outbreak
Amanda R. Carlson, Jason S. Sibold, Timothy J. Assal, Jose F. Negron
2017, PLoS ONE (12)
Spruce beetle (Dendroctonus rufipennis) outbreaks are rapidly spreading throughout subalpine forests of the Rocky Mountains, raising concerns that altered fuel structures may increase the ecological severity of wildfires. Although many recent studies have found no conclusive link between beetle outbreaks and increased fire size or canopy mortality, few studies have...
