Re-evaluating neonatal-age models for ungulates: Does model choice affect survival estimates?
Troy W. Grovenburg, Kevin L. Monteith, Christopher N. Jacques, Robert W. Klaver, Christopher S. DePerno, Todd J. Brinkman, Kyle B. Monteith, Sophie L. Gilbert, Joshua B. Smith, Vernon C. Bleich, Christopher C. Swanson, Jonathan A. Jenks
2014, PLoS ONE (9)
New-hoof growth is regarded as the most reliable metric for predicting age of newborn ungulates, but variation in estimated age among hoof-growth equations that have been developed may affect estimates of survival in staggered-entry models. We used known-age newborns to evaluate variation in age estimates among existing hoof-growth equations and...
What predicts support for antler point restrictions?
Susan A. Schroeder, Louis Cornicelli, David C. Fulton, Marrett D. Grund
2014, Human Dimensions of Wildlife: An International Journal (19) 301-318
Although considerable research has focused on satisfaction with recreation experiences, limited work has examined factors related to regulatory support. In 2005, an antler point restriction (APR) regulation was introduced for hunting white-tailed deer (Odocoileus virginianus) in Minnesota’s Itasca State Park. Hunter surveys were conducted following the 2005, 2006, 2007, and...
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...
Evaluation of wave runup predictions from numerical and parametric models
Hilary F. Stockdon, David M. Thompson, Nathaniel G. Plant, Joseph W. Long
2014, Coastal Engineering (92) 1-11
Wave runup during storms is a primary driver of coastal evolution, including shoreline and dune erosion and barrier island overwash. Runup and its components, setup and swash, can be predicted from a parameterized model that was developed by comparing runup observations to offshore wave height, wave period, and local beach...
Quantifying understorey vegetation in the US Lake States: a proposed framework to inform regional forest carbon stocks
Matthew B. Russell, Anthony W. D’Amato, Bethany K. Schulz, Christopher W. Woodall, Grant M. Domke, John B. Bradford
2014, Forestry (87) 629-638
The contribution of understorey vegetation (UVEG) to forest ecosystem biomass and carbon (C) across diverse forest types has, to date, eluded quantification at regional and national scales. Efforts to quantify UVEG C have been limited to field-intensive studies or broad-scale modelling approaches lacking field measurements. Although large-scale inventories of UVEG...
Magnetic storms and induction hazards
Jeffrey J. Love, E. Joshua Rigler, Antti Pulkkinen, Christopher Balch
2014, Eos, Earth and Space Science News (95) 445-446
Magnetic storms are potentially hazardous to the activities and technological infrastructure of modern civilization. This reality was dramatically demonstrated during the great magnetic storm of March 1989, when surface geoelectric fields, produced by the interaction of the time-varying geomagnetic field with the Earth's electrically conducting interior, coupled onto the overlying...
Fishes and amphibians as laboratory model organisms for toxicological research
Sandeep Mukhi, Leticia Torres, Bibek Sharma, Madhavi Billam, Reynaldo Patino
Jitendra Kumar Sundaray, Rajeeb Kumar Mohanty, Munilkumar Sukham, Subhendu Kumar Otta, editor(s)
2014, Book chapter, Frontiers in aquaculture
No abstract available....
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...
The dynamics of Hawaiian-style eruptions: A century of study
Margaret T. Mangan, Katharine V. Cashman, Donald A. Swanson
Michael P. Poland, T. Jane Takahashi, Claire M. Landowski, editor(s)
2014, Professional Paper 1801-8
This chapter, prepared in celebration of the Hawaiian Volcano Observatoryʼs centennial, provides a historical lens through which to view modern paradigms of Hawaiian-style eruption dynamics. The models presented here draw heavily from observations, monitoring, and experiments conducted on Kīlauea Volcano, which, as the site of frequent and accessible eruptions, has...
Instability of Hawaiian volcanoes
Roger P. Denlinger, Julia K. Morgan
Michael P. Poland, T. Jane Takahashi, Claire M. Landowski, editor(s)
2014, Professional Paper 1801-4
Hawaiian volcanoes build long rift zones and some of the largest volcanic edifices on Earth. For the active volcanoes on the Island of Hawai‘i, the growth of these rift zones is upward and seaward and occurs through a repetitive process of decades-long buildup of a magma-system head along the rift...
Geomorphic evidence for enhanced Pliocene-Quaternary faulting in the northwestern Basin and Range
Magdalena A Ellis, Barnes Jason B, Joseph P. Colgan
2014, Lithosphere (7) 59-72
Mountains in the U.S. Basin and Range Province are similar in form, yet they have different histories of deformation and uplift. Unfortunately, chronicling fault slip with techniques like thermochronology and geodetics can still leave sizable, yet potentially important gaps at Pliocene–Quaternary (∼105–106 yr) time scales. Here, we combine existing geochronology...
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....
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...
Mercury and methylmercury stream concentrations in a Coastal Plain watershed: A multi-scale simulation analysis
Christopher D. Knightes, Heather E. Golden, Celeste A. Journey, Gary M. Davis, Paul Conrads, Mark Marvin-DiPasquale, Mark E. Brigham, Paul M. Bradley
2014, Environmental Pollution (187) 182-192
Mercury is a ubiquitous global environmental toxicant responsible for most US fish advisories. Processes governing mercury concentrations in rivers and streams are not well understood, particularly at multiple spatial scales. We investigate how insights gained from reach-scale mercury data and model simulations can be applied at broader watershed scales using...
Factors affecting fat content in mottled ducks on the Upper Texas Gulf Coast
Brian Kearns, David A. Haukos, Patrick Walther, Warren C. Conway
2014, Journal of the Southeastern Association of Fish and Wildlife Agencies (2015) 274-280
Body condition, or an individual's ability to address metabolic needs, is an important measure of organism health. For waterfowl, body condition, usually some measure of fat, provides a useful proxy for assessing energy budgets during different life history periods and potentially is a measure of response to ecosystem changes. The...
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...
Component geochronology in the polyphase ca. 3920 Ma Acasta Gneiss
Stephen J. Mojzsis, Nicole L. Cates, Guillaume Caro, Dustin Trail, Oleg Abramov, Martin Guitreau, Janne Blichert-Toft, Michelle D. Hopkins, Wouter Bleeker
2014, Geochimica et Cosmochimica Acta (133) 68-96
The oldest compiled U–Pb zircon ages for the Acasta Gneiss Complex in the Northwest Territories of Canada span about 4050–3850 Ma; yet older ca. 4200 Ma xenocrystic U–Pb zircon ages have also been reported for this terrane. The AGC expresses at least 25 km2 of outcrop exposure, but only a small subset of this...
The role of protected area wetlands in waterfowl habitat conservation: implications for protected area network design
William S. Beatty, Dylan C. Kesler, Elisabeth B. Webb, Andrew H. Raedeke, Luke W. Naylor, Dale D. Humburg
2014, Biological Conservation (176) 144-152
The principal goal of protected area networks is biodiversity preservation, but efficacy of such networks is directly linked to animal movement within and outside area boundaries. We examined wetland selection patterns of mallards (Anas platyrhynchos) during non-breeding periods from 2010 to 2012 to evaluate the utility of protected areas to...
Accounting for tagging-to-harvest mortality in a Brownie tag-recovery model by incorporating radio-telemetry data
Frances E. Buderman, Duane R. Diefenbach, Mary Jo Casalena, Christopher S. Rosenberry, Bret D. Wallingford
2014, Ecology and Evolution (4) 1439-1450
The Brownie tag-recovery model is useful for estimating harvest rates but assumes all tagged individuals survive to the first hunting season; otherwise, mortality between time of tagging and the hunting season will cause the Brownie estimator to be negatively biased. Alternatively, fitting animals with radio transmitters can be used to...
Using urban forest assessment tools to model bird habitat potential
Susannah B. Lerman, Keith H. Nislow, David J. Nowak, Stephen DeStefano, David I. King, D. Todd Jones-Farrand
2014, Landscape and Urban Planning (122) 29-40
The alteration of forest cover and the replacement of native vegetation with buildings, roads, exotic vegetation, and other urban features pose one of the greatest threats to global biodiversity. As more land becomes slated for urban development, identifying effective urban forest wildlife management tools becomes paramount to ensure the urban...
Developing a topographic model to predict the northern hardwood forest type within Carolina northern flying squirrel (Glaucomys sabrinus coloratus) recovery areas of the southern Appalachians
Andrew Evans, Richard H. Odom, Lynn M. Resler, W. Mark Ford, Stephen Prisley
2014, International Journal of Forestry Research (2014)
The northern hardwood forest type is an important habitat component for the endangered Carolina northern flying squirrel (CNFS; Glaucomys sabrinus coloratus) for den sites and corridor habitats between boreo-montane conifer patches foraging areas. Our study related terrain data to presence of northern hardwood forest type in the recovery areas of...
A century of studying effusive eruptions in Hawaii
Katherine V. Cashman, Margaret T. Mangan
Michael P. Poland, T. Jane Takahashi, Claire M. Landowski, editor(s)
2014, Professional Paper 1801-9
The Hawaiian Volcano Observatory (HVO) was established as a natural laboratory to study volcanic processes. Since the most frequent form of volcanic activity in Hawai‘i is effusive, a major contribution of the past century of research at HVO has been to describe and quantify lava flow emplacement processes. Lava flow...
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...
The effects of harvest on waterfowl populations
Evan G. Cooch, Matthieu Guillemain, G Scott Boomer, Jean-Dominique Lebreton, James D. Nichols
2014, Wildfowl (Special Issue 4) 220-276
Change in the size of populations over space and time is, arguably, the motivation for much of pure and applied ecological research. The fundamental model for the dynamics of any population is straightforward: the net change in the abundance is the simple difference between the number of individuals entering the population and the number...
A multi-scaled approach to evaluating the fish assemblage structure within southern Appalachian streams USA.
Joseph Kirsch, James T. Peterson
2014, Transactions of the American Fisheries Society (143) 1358-1371
There is considerable uncertainty about the relative roles of stream habitat and landscape characteristics in structuring stream-fish assemblages. We evaluated the relative importance of environmental characteristics on fish occupancy at the local and landscape scales within the upper Little Tennessee River basin of Georgia and North Carolina. Fishes were sampled...
