Anadromous sea lampreys (Petromyzon marinus) are ecosystem engineers in a spawning tributary
Robert S. Hogg, Stephen M. Coghlan Jr., Joseph D. Zydlewski, Kevin S. Simon
2014, Freshwater Biology (59) 1294-1307
Sea lampreys (Petromyzon marinus) disturb the substratum during nest construction and alter the physical habitat, potentially affecting other stream organisms. We quantified differences in depth, velocity, fine-sediment coverage, embeddedness, intragravel permeability and benthic invertebrate assemblages (density and diversity) among nest mounds, nest pits and undisturbed reference locations...
Red-cockaded Woodpecker Picoides borealis Microhabitat Characteristics and Reproductive Success in a Loblolly-Shortleaf Pine Forest
Douglas R. Wood, L. Wesley Burger Jr., Francisco Vilella
2014, The Open Ornithology Journal (7) 49-54
We investigated the relationship between red-cockaded woodpecker (Picoides borealis) reproductive success and microhabitat characteristics in a southeastern loblolly (Pinus taeda) and shortleaf (P. echinata) pine forest. From 1997 to 1999, we recorded reproductive success parameters of 41 red-cockaded woodpecker groups at the Bienville National Forest, Mississippi. Microhabitat characteristics were measured...
Conserving migratory mule deer through the umbrella of sage-grouse
H. E. Copeland, H. Sawyer, K. L. Monteith, D.E. Naugle, Amy Pocewicz, N. Graf, Matthew Kauffman
2014, Ecosphere (5) 1-16
Conserving migratory ungulates in increasingly human-dominated landscapes presents a difficult challenge to land managers and conservation practitioners. Nevertheless, ungulates may receive ancillary benefits from conservation actions designed to protect species of greater conservation priority where their ranges are sympatric. Greater Sage-Grouse (Centrocerus urophasianus), for example, have been proposed as an...
Development of dietary-based toxic reference values to assess the risk of chlorophacinone to non-target raptorial birds
Barnett A. Rattner, Rebecca S. Lazarus, S. L. Shultz, Katherine E. Horak, Benjamin G. Abbo, Steven F. Volker
R. M. Timms, J. M. O’Brien, editor(s)
2014, Conference Paper, Proceedings of the 26th Vertebrate Pest Conference
Regulatory changes in the use of some second-generation anticoagulant rodenticides in parts of North America may result in expanded use of first-generation anticoagulant rodenticides (FGARs). Recent toxicological studies with captive raptors have demonstrated that these species are considerably more sensitive to the FGAR diphacinone than traditional avian wildlife test species...
Best practices for continuous monitoring of temperature and flow in wadeable streams
Jen Stamp, Anna I. Hamilton, Michelle Craddock, Laila Parker, Allison H. Roy, Daniel J. Isaak, Zachary Holden, Margaret Passmore, Britta Bierwagen
2014, Report
The United States Environmental Protection Agency (U.S. EPA) is working with its regional offices, states, tribes, river basin commissions and other entities to establish Regional Monitoring Networks (RMNs) for freshwater wadeable streams. To the extent possible, uninterrupted, biological, temperature and hydrologic data will be collected on an ongoing basis at...
The 2010 slow slip event and secular motion at Kilauea, Hawai`i inferred from TerraSAR-X InSAR data
Jingyi Chen, Howard A. Zebker, Paul Segall, Asta Miklius
2014, Journal of Geophysical Research B: Solid Earth (119) 6667-6683
We present here an Small BAseline Subset (SBAS) algorithm to extract both transient and secular ground deformations on the order of millimeters in the presence of tropospheric noise on the order of centimeters, when the transient is of short duration and known time, and the background deformation is smooth in...
Free-living waterfowl and shorebirds
Daniel M. Mulcahy
Gary West, Darryl Heard, Nigel Caulkett, editor(s)
2014, Book chapter, Zoo animal and wildlife immobilization and anesthesia
No abstract available....
Multiple plumage traits convey information about age and within-age-class qualities of a canopy-dwelling songbird, the Cerulean Warbler
Than J. Boves, David A. Buehler, Petra Bohall Wood, Amanda D. Rodewald, Jeffrey L. Larkin, Patrick D. Keyser, T. Ben Wigley
2014, The Auk (131) 20-31
Colorful plumage traits in birds may convey multiple, redundant, or unreliable messages about an individual. Plumage may reliably convey information about disparate qualities such as age, condition, and parental ability because discrete tracts of feathers may cause individuals to incur different intrinsic or extrinsic costs. Few studies have examined the...
Geophysical interpretation of U, Th, and rare earth element mineralization of the Bokan Mountain peralkaline granite complex, Prince of Wales Island, southeast Alaska
Anne E. McCafferty, Douglas B. Stoeser, Bradley S. Van Gosen
2014, Interpretation (2) SJ47-SJ63
A prospectivity map for rare earth element (REE) mineralization at the Bokan Mountain peralkaline granite complex, Prince of Wales Island, southeastern Alaska, was calculated from high-resolution airborne gamma-ray data. The map displays areas with similar radioelement concentrations as those over the Dotson REE-vein-dike system, which is characterized by moderately high...
Characterizing lentic freshwater fish assemblages using multiple sampling methods
Jesse R. Fischer, Michael C. Quist
2014, Environmental Monitoring and Assessment (186) 4461-4474
Characterizing fish assemblages in lentic ecosystems is difficult, and multiple sampling methods are almost always necessary to gain reliable estimates of indices such as species richness. However, most research focused on lentic fish sampling methodology has targeted recreationally important species, and little to no information is available regarding the influence...
Status of whitebarkpine in the Greater Yellowstone Ecosystem: A step-trend analysis comparing 2004-2007 to 2008-2011
Erin Shanahan, Kathryn M. Irvine, Dave Roberts, Andrea R. Litt, Kristin Legg, Rob Daley, Nina Chambers
2014, Natural Resource Technical Report NPS/GRYN/NRTR—2014/917
Whitebark pine (Pinus albicaulis) is a foundation and keystone species in upper subalpine environments of the northern Rocky Mountains that strongly influences the biodiversity and productivity of high-elevation ecosystems (Tomback et al. 2001, Ellison et al. 2005). Throughout its historic range, whitebark pine has decreased significantly as a major component...
Selection of forest canopy gaps by male Cerulean Warblers in West Virginia
Kelly A. Perkins, Petra Bohall Wood
2014, Wilson Journal of Ornithology (126) 288-297
Forest openings, or canopy gaps, are an important resource for many forest songbirds, such as Cerulean Warblers (Setophaga cerulea). We examined canopy gap selection by this declining species to determine if male Cerulean Warblers selected particular sizes, vegetative heights, or types of gaps. We tested whether these parameters differed among...
A comparison of two sampling designs for fish assemblage assessment in a large river
Ian A. Kiraly, Stephen M. Coghlan Jr., Joseph D. Zydlewski, Daniel Hayes
2014, Transactions of the American Fisheries Society (143) 508-518
We compared the efficiency of stratified random and fixed-station sampling designs to characterize fish assemblages in anticipation of dam removal on the Penobscot River, the largest river in Maine. We used boat electrofishing methods in both sampling designs. Multiple 500-m transects were selected randomly and electrofished in each of nine...
Effects of low and high salinity regimes on seasonal gametogenesis of the ribbed mussel Geukensia granosissima in coastal Louisiana, USA
Aaron Honig, Megan K. LaPeyre, John Supan
2014, Sexuality and Early Development in Aquatic Organisms (1) 75-82
Benthic intertidal bivalves play an essential role in estuarine ecosystems by contributing to habitat provision, water filtration, and host vegetation productivity. As such, ecosystem level changes that impact population distributions and persistence of local bivalve populations may have large ecosystem level consequences, making it important to better understand the population...
A spatial analysis of population dynamics and climate change in Africa: potential vulnerability hot spots emerge where precipitation declines and demographic pressures coincide
David López-Carr, Narcisa G. Pricope, Juliann E. Aukema, Marta M. Jankowska, Christopher C. Funk, Gregory J. Husak, Joel C. Michaelsen
2014, Population and Environment (35) 323-339
We present an integrative measure of exposure and sensitivity components of vulnerability to climatic and demographic change for the African continent in order to identify “hot spots” of high potential population vulnerability. Getis-Ord Gi* spatial clustering analyses reveal statistically significant locations of spatio-temporal precipitation decline coinciding with high population density and...
Productivity and carbon dioxide exchange of leguminous crops: estimates from flux tower measurements
Tagir G. Gilmanov, John M. Baker, Carl J. Bernacchi, David P. Billesbach, George G. Burba, Saulo Castro, Jiquan Chen, Werner Eugster, Marc L. Fischer, John A. Gamon, Maheteme T. Gebremedhin, Aaron J. Glenn, Timothy J. Griffis, Jerry L. Hatfield, Mark W. Heuer, Daniel M. Howard, Monique Y. Leclerc, Henry W. Loescher, Oliver Marloie, Tilden P. Meyers, Albert Olioso, Rebecca L. Phillips, John H. Prueger, R. Howard Skinner, Andrew E. Suyker, Mario Tenuta, Bruce K. Wylie
2014, Agronomy Journal (106) 545-559
Net CO2 exchange data of legume crops at 17 flux tower sites in North America and three sites in Europe representing 29 site-years of measurements were partitioned into gross photosynthesis and ecosystem respiration by using the nonrectangular hyperbolic light-response function method. The analyses produced net CO2 exchange data and new ecosystem-scale ecophysiological...
Seasonal shifts in the diet of the big brown bat (Eptesicus fuscus), Fort Collins, Colorado
Ernest W. Valdez, Thomas J. O’Shea
2014, Southwestern Naturalist (59) 511-516
Recent analyses suggest that the big brown bat (Eptesicus fuscus) may be less of a beetle specialist (Coleoptera) in the western United States than previously thought, and that its diet might also vary with temperature. We tested the hypothesis that big brown bats might opportunistically prey on moths by analyzing...
A continuous record of intereruption velocity change at Mount St. Helens from coda wave interferometry
Alicia J. Hotovec-Ellis, Joan S. Gomberg, John Vidale, Ken C. Creager
2014, Journal of Geophysical Research B: Solid Earth (119) 2199-2214
In September 2004, Mount St. Helens volcano erupted after nearly 18 years of quiescence. However, it is unclear from the limited geophysical observations when or if the magma chamber replenished following the 1980–1986 eruptions in the years before the 2004–2008 extrusive eruption. We use coda wave interferometry with repeating earthquakes to...
Petrologic insights into basaltic volcanism at historically active Hawaiian volcanoes
Rosalind T. Helz, David A. Clague, Thomas W. Sisson, Carl R. Thornber
Michael P. Poland, T. Jane Takahashi, Claire M. Landowski, editor(s)
2014, Professional Paper 1801-6
Study of the petrology of Hawaiian volcanoes, in particular the historically active volcanoes on the Island of Hawai‘i, has long been of worldwide scientific interest. When Dr. Thomas A. Jaggar, Jr., established the Hawaiian Volcano Observatory (HVO) in 1912, detailed observations on basaltic activity at Kīlauea and Mauna Loa volcanoes...
Sources and sinks of carbon in boreal ecosystems of interior Alaska: a review
Thomas A. Douglas, Miriam C. Jones, Christopher A. Hiemstra
2014, Elementa: Science of the anthropocene (2)
Boreal regions store large quantities of carbon but are increasingly vulnerable to carbon loss due to disturbance and climate warming. The boreal region, underlain by discontinuous permafrost, presents a challenging landscape for itemizing current and potential carbon sources and sinks in the boreal soil and vegetation. The roles of fire,...
Ongoing drought-induced uplift in the western United States.
Adrian Antal Borsa, Duncan Carr Agnew, Daniel R. Cayan
2014, Science (345) 1587-1590
The western United States has been experiencing severe drought since 2013. The solid earth response to the accompanying loss of surface and near-surface water mass should be a broad region of uplift. We use seasonally adjusted time series from continuously operating global positioning system stations to measure this uplift, which...
A VS30 map for California with geologic and topographic constraints
Eric Thompson, David J. Wald, Charles Worden
2014, Bulletin of the Seismological Society of America (104) 2313-2321
For many earthquake engineering applications, site response is estimated through empirical correlations with the time‐averaged shear‐wave velocity to 30 m depth (VS30). These applications therefore depend on the availability of either site‐specific VS30 measurements or VS30 maps at local, regional, and global scales. Because VS30 measurements are sparse, a proxy frequently is needed to estimate VS30 at unsampled locations....
Geophysical framework of the Peninsular Ranges batholith—Implications for tectonic evolution and neotectonics
Victoria E. Langenheim, Robert C. Jachens, Carlos Aiken
2014, GSA Memoirs (211) 1-20
The crustal structure of the Peninsular Ranges batholith can be divided geophysically into two parts: (1) a western mafic part that is dense, magnetic, and characterized by relatively high seismic velocities (>6.25 km/s), low heat flow (<60 mW/m2), and relatively sparse seismicity, and (2) an eastern, more felsic part that...
Development of a globally applicable model for near real-time prediction of seismically induced landslides
M. Anna Nowicki, David J. Wald, Michael W. Hamburger, Mike Hearne, Eric M. Thompson
2014, Engineering Geology (173) 54-65
Substantial effort has been invested to understand where seismically induced landslides may occur in the future, as they are a costly and frequently fatal threat in mountainous regions. The goal of this work is to develop a statistical model for estimating the spatial distribution of landslides in near real-time around...
Implications of Web Mercator and its Use in Online Mapping
Sarah E. Battersby, Michael P. Finn, E. Lynn Usery, Kristina H. Yamamoto
2014, Cartographica: The International Journal for Geographic Information and Geovisualization (49) 85-101
Online interactive maps have become a popular means of communicating with spatial data. In most online mapping systems, Web Mercator has become the dominant projection. While the Mercator projection has a long history of discussion about its inappropriateness for general-purpose mapping, particularly at the global scale, and seems to have...
