Evaluating population expansion of black bears using spatial capture-recapture
Catherine C. Sun, Angela K. Fuller, Matthew P. Hare, Jeremy E. Hurst
2017, Journal of Wildlife Management (81) 814-823
The population of American black bears (Ursus americanus) in southern New York, USA has been growing and expanding in range since the 1990s. This has motivated a need to anticipate future patterns of range expansion. We conducted a non-invasive, genetic, spatial capture-recapture (SCR) study to estimate black bear density and...
Plant diversity increases with the strength of negative density dependence at the global scale
Joseph A. LaManna, Scott A. Mangan, Alfonso Alonso, Norman Bourg, Warren Y. Brockelman, Sarayudh Bunyavejchewin, Li-Wan Chang, Jyh-Min Chiang, George B. Chuyong, Keith Clay, Richard Condit, Susan Cordell, Stuart J. Davies, Tucker J. Furniss, Christian P. Giardina, I.A.U. Nimal Gunatilleke, C.V. Savitri Gunatilleke, Fangliang He, Robert W. Howe, Stephen P. Hubbell, Chang-Fu Hsieh, Faith M. Inman-Narahari, David Janik, Daniel J. Johnson, David Kenfack, Lisa Korte, Kamil Kral, Andrew J. Larson, James A. Lutz, Sean M. McMahon, William J. McShea, Herve R. Memiaghe, Anuttara Nathalang, Vojtech Novotny, Perry S. Ong, David A. Orwig, Rebecca Ostertag, Geoffrey G. Parker, Richard P. Phillips, Lawren Sack, I-Fang Sun, J. Sebastian Tello, Duncan W. Thomas, Benjamin L. Turner, Dilys M. Vela Diaz, Tomas Vrska, George D. Weiblen, Amy Wolf, Sandra Yap, Jonathan A. Myers
2017, Science (356) 1389-1392
Theory predicts that higher biodiversity in the tropics is maintained by specialized interactions among plants and their natural enemies that result in conspecific negative density dependence (CNDD). By using more than 3000 species and nearly 2.4 million trees across 24 forest plots worldwide, we show that global patterns in tree...
A database and probabilistic assessment methodology for carbon dioxide enhanced oil recovery and associated carbon dioxide retention in the United States
Peter D. Warwick, Mahendra K. Verma, Emil D. Attanasi, Ricardo A. Olea, Madalyn S. Blondes, Philip Freeman, Sean T. Brennan, Matthew D. Merrill, Hossein Jahediesfanjani, Jacqueline Roueche, Celeste D. Lohr
2017, Energy Procedia (114) 7055-7059
The U.S. Geological Survey (USGS) has developed an assessment methodology for estimating the potential incremental technically recoverable oil resources resulting from carbon dioxide-enhanced oil recovery (CO2-EOR) in reservoirs with appropriate depth, pressure, and oil composition. The methodology also includes a procedure for estimating the CO2 that remains in the reservoir after...
Fine particle retention within stream storage areas at base flow and in response to a storm event
J. D. Drummond, L. G. Larsen, R. González-Pinzón, A. I. Packman, Judson Harvey
2017, Water Resources Research (53) 5690-5705
Fine particles (1–100 µm), including particulate organic carbon (POC) and fine sediment, influence stream ecological functioning because they may contain or have a high affinity to sorb nitrogen and phosphorus. These particles are immobilized within stream storage areas, especially hyporheic sediments and benthic biofilms. However, fine particles are also known...
Subsurface geometry of the San Andreas fault in southern California: Results from the Salton Seismic Imaging Project (SSIP) and strong ground motion expectations
Gary S. Fuis, Klaus Bauer, Mark R. Goldman, Trond Ryberg, Victoria E. Langenheim, Daniel S. Scheirer, Michael J. Rymer, Joann M. Stock, John A. Hole, Rufus D. Catchings, Robert Graves, Brad T. Aagaard
2017, Bulletin of the Seismological Society of America (107) 1642-1662
The San Andreas fault (SAF) is one of the most studied strike‐slip faults in the world; yet its subsurface geometry is still uncertain in most locations. The Salton Seismic Imaging Project (SSIP) was undertaken to image the structure surrounding the SAF and also its subsurface geometry. We present SSIP studies...
Monitoring land surface albedo and vegetation dynamics using high spatial and temporal resolution synthetic time series from Landsat and the MODIS BRDF/NBAR/albedo product
Zhuosen Wang, Crystal B. Schaaf, Qingson Sun, JiHyun Kim, Angela M. Erb, Feng Gao, Miguel O. Roman, Yun Yang, Shelley Petroy, Jeffrey Taylor, Jeffrey G. Masek, Jeffrey T. Morisette, Xiaoyang Zhang, Shirley A. Papuga
2017, International Journal of Applied Earth Observation and Geoinformation (59) 104-117
Seasonal vegetation phenology can significantly alter surface albedo which in turn affects the global energy balance and the albedo warming/cooling feedbacks that impact climate change. To monitor and quantify the surface dynamics of heterogeneous landscapes, high temporal and spatial resolution synthetic time series of albedo and the enhanced vegetation index...
Novel, continuous monitoring of fine‐scale movement using fixed‐position radiotelemetry arrays and random forest location fingerprinting
Andrew B. Harbicht, Theodore R. Castro-Santos, William R. Ardren, Dimitry Gorsky, Dylan Fraser
2017, Methods in Ecology and Evolution (8) 850-859
Radio‐tag signals from fixed‐position antennas are most often used to indicate presence or absence of individuals, or to estimate individual activity levels from signal strength variation within an antenna's detection zone. The potential of such systems to provide more precise information on tag location and movement has not been...
Morphological and molecular characterization of Sarcocystis arctica-like sarcocysts from the Arctic fox (Vulpes lagopus) from Alaska, USA
Camila K. Cerqueira-Cezar, Peter C. Thompson, Shiv K. Verma, Joseph Mowery, Rafael Calero-Bernal, Fernando H. Antunes Murata, David R. Sinnett, Caroline R. Van Hemert, Benjamin M. Rosenthal, Jitender P. Dubey
2017, Parasitology Research (116) 1871-1878
The muscles of herbivores commonly harbor sarcocysts of parasites belonging to species in the genus Sarcocystis, but such muscle parasites are rare in carnivores. Here, we report Sarcocystis arctica-like sarcocysts in muscles of Arctic foxes (Vulpes lagopus) from Alaska, USA, for the first time. The tongues of...
Gradients in Catostomid assemblages along a reservoir cascade
Leandro E. Miranda, Kevin R. Keretz, Chelsea R. Gilliland
2017, River Research and Applications (33) 983-990
Serial impoundment of major rivers leads to alterations of natural flow dynamics and disrupts longitudinal connectivity. Catostomid fishes (suckers, family Catostomidae) are typically found in riverine or backwater habitats yet are able to persist in impounded river systems. To the detriment of conservation, there is limited information about distribution of...
Evaluation of genetic population structure of smallmouth bass in the Susquehanna River basin, Pennsylvania
Megan K. Schall, Meredith L. Bartron, Timothy Wertz, Jonathan M. Niles, Cassidy H. Shaw, Tyler Wagner
2017, North American Journal of Fisheries Management (37) 850-861
The Smallmouth Bass Micropterus dolomieu was introduced into the Susquehanna River basin, Pennsylvania, nearly 150 years ago. Since introduction, it has become an economically and ecologically important species that supports popular recreational fisheries. It is also one of the most abundant top predators in the system. Currently, there is no...
Unique genome organization of non-mammalian papillomaviruses provides insights into the evolution of viral early proteins
Koenraad Van Doorslaer, Valeria Ruoppolo, Annie Schmidt, Amelie Lescroel, Dennis Jongsomjit, Megan Elrod, Simona Kraberger, Daisy Stainton, Katie M. Dugger, Grant Ballard, David G. Ainley, Arvind Varsani
2017, Virus Evolution (3)
The family Papillomaviridae contains more than 320 papillomavirus types, with most having been identified as infecting skin and mucosal epithelium in mammalian hosts. To date, only nine non-mammalian papillomaviruses have been described from birds (n = 5), a fish (n = 1), a snake (n = 1), and turtles (n = 2). The identification of papillomaviruses in sauropsids and a...
Short-term ecological consequences of collaborative restoration treatments in ponderosa pine forests of Colorado
Jenny S. Briggs, Paula J. Fornwalt, Jonas A. Feinstein
2017, Forest Ecology and Management (395) 69-80
Ecological restoration treatments are being implemented at an increasing rate in ponderosa pine and other dry conifer forests across the western United States, via the USDA Forest Service’s Collaborative Forest Landscape Restoration (CFLR) program. In this program, collaborative stakeholder groups work with National Forests (NFs) to adaptively implement and monitor...
Diet composition of age-0 fishes in created habitats of the Lower Missouri River
Trevor A. Starks, James M. Long
2017, The American Midland Naturalist (178) 112-122
Channelization of the Missouri River has greatly reduced the availability of shallow water habitats used by many larval and juvenile fishes and contributed to imperilment of floodplain-dependent biota. Creation of small side channels, or chutes, is being used to restore shallow water habitat and reverse negative environmental effects associated with...
Estimating the number of recreational anglers for a given waterbody
Kevin L. Pope, Larkin A. Powell, Brian S. Harmon, Mark A. Pegg, Christopher J. Chizinski
2017, Fisheries Research (191) 69-75
Knowing how many anglers use a given body of water is paramount for understanding components of a fishery related to angling pressure and harvest, yet no study has attempted to provide an estimate of the population size of anglers for a given waterbody. Here, we use information from creel surveys...
Mapping informal small-scale mining features in a data-sparse tropical environment with a small UAS
Peter G. Chirico, Jessica D. Dewitt
2017, Journal of Unmanned Vehicle Systems (5) 69-91
This study evaluates the use of a small unmanned aerial system (UAS) to collect imagery over artisanal mining sites in West Africa. The purpose of this study is to consider how very high-resolution imagery and digital surface models (DSMs) derived from structure-from-motion (SfM) photogrammetric techniques from a small UAS can...
Real-time geomagnetic monitoring for space weather-related applications: Opportunities and challenges
Jeffrey J. Love, Carol Finn
2017, Space Weather (15) 820-827
An examination is made of opportunities and challenges for enhancing global, real-time geomagnetic monitoring that would be beneficial for a variety of operational projects. This enhancement in geomagnetic monitoring can be attained by expanding the geographic distribution of magnetometer stations, improving the quality of magnetometer data, increasing acquisition sampling rates,...
Geomagnetically induced currents: Science, engineering, and applications readiness
Antti Pulkkinen, E. Bernabeu, A. Thomson, A. Viljanen, R. Pirjola, D. Boteler, J. Eichner, P.J. Cilliers, D. Welling, N.P. Savani, R.S. Weigel, Jeffrey J. Love, Christopher Balch, C.M. Ngwira, G. Crowley, Adam Schultz, R. Kataoka, B. Anderson, D. Fugate, J.J. Simpson, M. MacAlester
2017, Space Weather (15) 828-856
This paper is the primary deliverable of the very first NASA Living With a Star Institute Working Group, Geomagnetically Induced Currents (GIC) Working Group. The paper provides a broad overview of the current status and future challenges pertaining to the science, engineering, and applications of the GIC problem. Science is...
Decadal declines in avian herbivore reproduction: density-dependent nutrition and phenological mismatch in the Arctic
Megan V. Ross, Ray T. Alisaukas, David C. Douglas, Dana K. Kellett
2017, Ecology (98) 1869-1883
A full understanding of population dynamics depends not only on estimation of mechanistic contributions of recruitment and survival, but also knowledge about the ecological processes that drive each of these vital rates. The process of recruitment in particular may be protracted over several years, and can depend on numerous ecological...
Reproductive ecology, spawning behavior, and juvenile distribution of Mountain Whitefish in the Madison River, Montana
Jan K. Boyer, Christopher S. Guy, Molly A. H. Webb, Travis B. Horton, Thomas E. McMahon
2017, Transactions of the American Fisheries Society (146) 939-954
Mountain Whitefish Prosopium williamsoni were historically common throughout much of the U.S. Intermountain West. However, within the last decade Mountain Whitefish have exhibited population-level declines in some rivers. In the Madison River, Montana, anecdotal evidence indicates Mountain Whitefish abundance has declined and the population is skewed toward larger individuals, which is typically...
Active tectonics of the northern Mojave Desert: The 2017 Desert Symposium field trip road log
David M. Miller, R.E. Reynolds, Geoffrey Phelps, Jeffrey S. Honke, Andrew J. Cyr, David C. Buesch, Kevin M. Schmidt, G. Losson
2017, Conference Paper, ECSZ Does It: Revisiting the Eastern California Shear Zone
The 2017 Desert Symposium field trip will highlight recent work by the U.S. Geological Survey geologists and geophysicists, who have been mapping young sediment and geomorphology associated with active tectonic features in the least well-known part of the eastern California Shear Zone (ECSZ). This area, stretching from Barstow eastward in...
Response of deep groundwater to land use change in desert basins of the Trans-Pecos region, Texas, USA: Effects on infiltration, recharge, and nitrogen fluxes
Wendy Marie Robertson, J.K. Bohlke, John M. Sharp
2017, Hydrological Processes (31) 2349-2364
Quantifying the effects of anthropogenic processes on groundwater in arid regions can be complicated by thick unsaturated zones with long transit times. Human activities can alter water and nutrient fluxes, but their impact on groundwater is not always clear. This study of basins in the Trans-Pecos region of Texas links...
Estimating incision healing rate for surgically implanted acoustic transmitters from recaptured fish
Abby Schoonyan, Richard T. Kraus, Matthew D. Faust, Christopher Vandergoot, Steven J. Cooke, H. Andrew Cook, Todd A. Hayden, Charles C. Krueger
2017, Animal Biotelemetry (5)
Background Intracoelomic implantation of electronic tags has become a common method in fishery research, but rarely are fish examined by scientists after release to understand the extent that surgical incisions have healed. Walleye (Sander vitreus) are a valuable, highly exploited fishery resource in the Laurentian Great Lakes. Here, fishery capture...
Yellowstone grizzly bears: Ecology and conservation of an icon of wildness
P.J. White, Kerry A. Gunther, Frank T. van Manen, editor(s)
2017, Book
No abstract available....
Land before water: The relative temporal sequence of human alteration of freshwater ecosystems in the conterminous United States
Ellen Wohl, Katherine B. Lininger, Jill Baron
2017, Anthropocene (18) 27-46
Human alteration of ecosystems prior to Euro-American contact in the area that became the conterminous United States disproportionately affected terrestrial systems compared to freshwater ecosystems, primarily through the use of fire and agriculture in some regions of the United States. After circa 1600 AD, trapping of beaver, along with intensive modification of rivers and...
Tracking the fate of nitrate through pulse-flow wetlands: A mesocosm scale 15N enrichment tracer study
Tiffany L. Messer, Michael R. Burchell, J.K. Bohlke, Craig R. Tobias
2017, Ecological Engineering (106) 597-608
Quantitative information about the fate of applied nitrate (NO3-N) in pulse-flow constructed wetlands is essential for designing wetland treatment systems and assessing their nitrogen removal services for agricultural and stormwater applications. Although many studies have documented NO3-N losses in wetlands, controlled experiments indicating the relative importance of different processes and...
