Infectious hematopoietic necrosis virus virological and genetic surveillance 2000–2012
Rachel Breyta, Ilana L. Brito, Gael Kurath, Shannon L. LaDeau
2017, Ecology (98) 283-283
Surveillance records of the acute RNA pathogen of Pacific salmonid fish infectious hematopoietic necrosis virus are combined for the first time to enable landscape-level ecological analyses and modeling. The study area is the freshwater ecosystems of the large Columbia River watershed in the U.S. states of Washington, Oregon, and Idaho,...
Spatial demographic models to inform conservation planning of golden eagles in renewable energy landscapes
J. David Wiens, Nathan H. Schumaker, Richard D. Inman, Todd C. Esque, Kathleen M. Longshore, Kenneth E. Nussear
2017, Journal of Raptor Research (51) 234-257
Spatial demographic models can help guide monitoring and management activities targeting at-risk species, even in cases where baseline data are lacking. Here, we provide an example of how site-specific changes in land use and anthropogenic stressors can be incorporated into a spatial demographic model to investigate effects on population dynamics...
Drivers of Holocene sea-level change in the Caribbean
Nicole Khan, Erica Ashe, Benjamin P. Horton, Andrea Dutton, Robert E. Kopp, Gilles Brocard, Simon E. Engelhart, David F. Hill, W.R. Peltier, Christopher H. Vane, Fred N. Scatena
2017, Quaternary Science Reviews (155) 13-36
We present a Holocene relative sea-level (RSL) database for the Caribbean region (5°N to 25°N and 55°W to 90°W) that consists of 499 sea-level index points and 238 limiting dates. The database was compiled from multiple sea-level indicators (mangrove peat, microbial mats, beach rock and acroporid and massive corals). We...
Hydrochemical determination of source water contributions to Lake Lungo and Lake Ripasottile (central Italy)
Claire Archer, Paula Noble, David Kreamer, Vincenzo Piscopo, Marco Petitta, Michael R. Rosen, Simon R. Poulson, Gianluca Piovesan, Scott Mensing
2017, Journal of Limnology (76) 326-342
Lake Lungo and Lake Ripasottile are two shallow (4-5 m) lakes located in the Rieti Basin, central Italy, that have been described previously as surface outcroppings of the groundwater table. In this work, the two lakes as well as springs and rivers that represent their potential source waters are characterized...
Large decadal-scale changes in uranium and bicarbonate in groundwater of the irrigated western U.S
Karen R. Burow, Kenneth Belitz, Neil M. Dubrovsky, Bryant C. Jurgens
2017, Science of the Total Environment (586) 87-95
Samples collected about one decade apart from 1105 wells from across the U.S. were compiled to assess whether uranium concentrations in the arid climate are linked to changing bicarbonate concentrations in the irrigated western U.S. Uranium concentrations in groundwater were high in the arid climate in the western U.S, where...
Influence of repeated prescribed fire on tree growth and mortality in Pinus resinosa forests, northern Minnesota
Alessandra Bottero, Anthony W. D’Amato, Brian J. Palik, Christel C. Kern, John B. Bradford, Sawyer S. Scherer
2017, Forest Science (63) 94-100
Prescribed fire is widely used for ecological restoration and fuel reduction in fire-dependent ecosystems, most of which are also prone to drought. Despite the importance of drought in fire-adapted forests, little is known about cumulative effects of repeated prescribed burning on tree growth and related response to drought. Using dendrochronological...
Human footprint affects US carbon balance more than climate change
Dominique Bachelet, Ken Ferschweiler, Tim Sheehan, Barry Baker, Benjamin M. Sleeter, Zhiliang Zhu
2017, Book chapter, Reference Module in Earth Systems and Environmental Sciences
The MC2 model projects an overall increase in carbon capture in conterminous United States during the 21st century while also simulating a rise in fire causing much carbon loss. Carbon sequestration in soils is critical to prevent carbon losses from future disturbances, and we show that natural ecosystems store more...
Forest restoration at Redwood National Park: exploring prescribed fire alternatives to second-growth management: a case study
Eamon Engber, Jason Teraoka, Phillip J. van Mantgem
2017, General Technical Report PSW-GTR-258
Almost half of Redwood National Park is comprised of second-growth forests characterized by high stand density, deficient redwood composition, and low understory biodiversity. Typical structure of young redwood stands impedes the recovery of old-growth conditions, such as dominance of redwood (Sequoia sempervirens (D. Don) Endl.), distinct canopy layers and diverse...
Pathogen transport in groundwater systems: Contrasts with traditional solute transport
Randall J. Hunt, William P. Johnson
2017, Hydrogeology Journal (25) 921-930
Water quality affects many aspects of water availability, from precluding use to societal perceptions of fit-for-purpose. Pathogen source and transport processes are drivers of water quality because they have been responsible for numerous outbreaks resulting in large economic losses due to illness and, in some cases, loss of life. Outbreaks...
Guidance documents: Continued support to improve operations of fish hatcheries and field sites to reduce the impact or prevent establishment of New Zealand Mudsnails and other invasive mollusks
Christine M. Moffitt
2017, Cooperator Science Series FWS/CSS-124-2017
This project tested and revised a risk assessment/management tool authored by Moffitt and Stockton designed to provide hatchery biologists and others a structure to measure risk and provide tools to control, prevent or eliminate invasive New Zealand mudsnails (NZMS) and other invasive mollusks in fish hatcheries and hatchery operations. The...
Geology of the Petersburg batholith, eastern Piedmont, Virginia
Brent E. Owens, Mark W. Carter, Christopher M. Bailey
2017, Book chapter, From the Blue Ridge to the beach Geological field excursions across Virginia
The 295-300 Ma Petersburg batholith in east-central Virginia forms one of the largest and northernmost of the Alleghanian plutonic complexes in the southern Appalachian Piedmont. The batholith is primarily composed of granite including massive and foliated (both magmatic and solid-state fabrics) varieties. The plutonic complex intruded medium-grade metamorphosed volcanic/plutonic rocks...
Understanding the past to interpret the future: Comparison of simulated groundwater recharge in the upper Colorado River basin (USA) using observed and general-circulation-model historical climate data
Fred D. Tillman, Subhrendu Gangopadhyay, Tom Pruitt
2017, Hydrogeology Journal (25) 347-358
In evaluating potential impacts of climate change on water resources, water managers seek to understand how future conditions may differ from the recent past. Studies of climate impacts on groundwater recharge often compare simulated recharge from future and historical time periods on an average monthly or overall average annual basis,...
Geology along the Blue Ridge Parkway in Virginia
Mark W. Carter, C. Scott Southworth, Richard P. Tollo, Arthur J. Merschat, Sara Wagner, Ava Lazor, John N. Aleinikoff
2017, Book chapter, From the Blue Ridge to the beach: Geological field excursions across Virginia
Detailed geologic mapping and new SHRIMP (sensitive high-resolution ion microprobe) U-Pb zircon, Ar/Ar, Lu-Hf, 14C, luminescence (optically stimulated), thermochronology (fission-track), and palynology reveal the complex Mesoproterozoic to Quaternary geology along the ~350 km length of the Blue Ridge Parkway in Virginia. Traversing the boundary of the central and southern Appalachians, rocks...
Replication and shedding kinetics of infectious hematopoietic necrosis virus in juvenile rainbow trout
Andrew R. Wargo, Robert J. Scott, Benjamin Kerr, Gael Kurath
2017, Virus Research (227) 200-211
Viral replication and shedding are key components of transmission and fitness, the kinetics of which are heavily dependent on virus, host, and environmental factors. To date, no studies have quantified the shedding kinetics of infectious hematopoietic necrosis virus (IHNV) in rainbow trout (Oncorhynchus mykiss), or how they are associated with...
What can volunteer angler tagging data tell us about the status of the Giant Trevally (ulua aukea) Caranx ignobilis fishery in Hawaii: revisiting data collected during Hawaii’s Ulua and Papio Tagging Project 2000-2016
Timothy B. Grabowski, Erik C. Franklin
2017, Cooperator Science Series FWS/CSS-126-2017
Giant Trevally (ulua aukea) Caranx ignobilis is one of the most highly prized and frequentlytargeted nearshore species. However, there is very little information on its current status inHawaiian waters. This study uses mark-recapture data collected as part of recreational anglertagging program conducted by the Hawaii Department of Land and Natural...
Fish assemblages
Daniel J. McGarvey, Jeffrey A. Falke, Hiram W. Li, Judith Li
F. Richard Hauer, G. A. Lamberti, editor(s)
2017, Book chapter, Methods in stream ecology, 3rd Edition
Methods to sample fishes in stream ecosystems and to analyze the raw data, focusing primarily on assemblage-level (all fish species combined) analyses, are presented in this chapter. We begin with guidance on sample site selection, permitting for fish collection, and information-gathering steps to be completed prior to conducting fieldwork. Basic...
Ecological risk assessment of Grass Carp (Ctenopharyngodon idella) for the Great Lakes Basin
Cynthia S. Kolar, Becky Cudmore
2017, Canadian Science Advisory Secretariat Central and Arctic Region Science Advisory Report 2016/057
Grass Carp (Ctenopharyngodon idella) is an herbivorous, freshwater fish that was first introduced in the United States in the early 1960s for use in biological control of aquatic vegetation. It has since escaped and dispersed through the Mississippi River basin towards the Great Lakes. To characterize the risk of Grass...
Model-based estimators of density and connectivity to inform conservation of spatially structured populations
Dana J. Morin, Angela K. Fuller, J. Andrew Royle, Chris Sutherland
2017, Ecosphere (8) 1-16
Conservation and management of spatially structured populations is challenging because solutions must consider where individuals are located, but also differential individual space use as a result of landscape heterogeneity. A recent extension of spatial capture–recapture (SCR) models, the ecological distance model, uses spatial encounter histories of individuals (e.g., a record...
Lake Ontario benthic prey fish assessment, 2016
Brian Weidel, Maureen Walsh, Jeremy P. Holden, Michael J. Connerton
2017, NYSDEC Lake Ontario Annual Report 2016-12b
Benthic prey fishes are a critical component of the Lake Ontario food web, serving as energy vectors from benthic invertebrates to native and introduced piscivores. Beginning in 1978, Lake Ontario benthic prey fishes were assessed using bottom trawls collected from the lake’s south shore (depth range: 8 – 150 m)....
Status and trends in the Lake Superior fish community, 2016
Mark Vinson, Lori M. Evrard, Owen T. Gorman, Daniel Yule
2017, Report, Compiled reports to the Great Lakes Fishery Commission of the annual bottom trawl and acoustics surveys for 2016
In 2016, the Lake Superior fish community was sampled with daytime bottom trawls at 76 nearshore and 35 offshore stations. Spring and summer water temperatures in 2016 were warmer than average and considerably warmer than observed in 2014 and 2015. In the nearshore zone, a total of 17,449 individuals from...
Improved vertical streambed flux estimation using multiple diurnal temperature methods in series
Dylan J. Irvine, Martin A. Briggs, Ian Cartwright, Courtney R. Scruggs, Laura K. Lautz
2017, Groundwater (55) 73-80
Analytical solutions that use diurnal temperature signals to estimate vertical fluxes between groundwater and surface water based on either amplitude ratios (Ar) or phase shifts (Δϕ) produce results that rarely agree. Analytical solutions that simultaneously utilize Ar and Δϕ within a single solution have more recently been derived, decreasing uncertainty...
Implications of the earthquake cycle for inferring fault locking on the Cascadia megathrust
Frederick Pollitz, Eileen Evans
2017, Geophysical Journal International (209) 167-185
GPS velocity fields in the Western US have been interpreted with various physical models of the lithosphere-asthenosphere system: (1) time-independent block models; (2) time-dependent viscoelastic-cycle models, where deformation is driven by viscoelastic relaxation of the lower crust and upper mantle from past faulting events; (3) viscoelastic block models, a time-dependent...
Post-9.45 Ma depositional and structural history of the Bear Canyon conglomerate between Indian Pass and Picacho State Recreation Area, southeastern California
Jason Ricketts, L. Sue Beard, Ryan S. Crow, Kevin Coffey, Gordon B. Haxel
2017, Conference Paper, ECSZ Does It: Revisiting the Eastern California Shear Zone: Desert Symposium Field Guide and Proceedings
No abstract available....
Accurate aging of juvenile salmonids using fork lengths
Suresh Sethi, Jonathon Gerken, Joshua Ashline
2017, Fisheries Research (185) 161-168
Juvenile salmon life history strategies, survival, and habitat interactions may vary by age cohort. However, aging individual juvenile fish using scale reading is time consuming and can be error prone. Fork length data are routinely measured while sampling juvenile salmonids. We explore the performance of aging juvenile fish based solely...
Imaging of earthquake faults using small UAVs as a pathfinder for air and space observations
Andrea Donnellan, Joseph Green, Adnan Ansar, Joseph Aletky, Margaret Glasscoe, Yehuda Ben-Zion, J. Ramon Arrowsmith, Stephen B. DeLong
2017, Conference Paper, 2017 IEEE Aerospace Conference Proceedings
Large earthquakes cause billions of dollars in damage and extensive loss of life and property. Geodetic and topographic imaging provide measurements of transient and long-term crustal deformation needed to monitor fault zones and understand earthquakes. Earthquake-induced strain and rupture characteristics are expressed in topographic features imprinted on the landscapes of...
