Egg size matching by an intraspecific brood parasite
Patrick R. Lemons, James S. Sedinger
2011, Behavioral Ecology (22) 696-700
Avian brood parasitism provides an ideal system with which to understand animal recognition and its affect on fitness. This phenomenon of laying eggs in the nests of other individuals has classically been framed from the perspective of interspecific brood parasitism and host recognition of parasitic eggs. Few examples exist of...
Diverse, discrete, mantle-derived batches of basalt erupted along a short normal fault zone: The Poison Lake chain, southernmost Cascades
L.J.P. Muffler, M.A. Clynne, A.T. Calvert, D.E. Champion
2011, Geological Society of America Bulletin (123) 2177-2200
The Poison Lake chain consists of small, monogenetic, calc-alkaline basaltic volcanoes located east of the Cascade arc axis, 30 km ENE of Lassen Peak in northeastern California. This chain consists of 39 distinguishable units in a 14-km-long and 2-kmwide zone trending NNW, parallel to nearby Quaternary normal faults. The 39...
Using a semi-natural stream to produce young sturgeons for conservation stocking: Maintaining natural selection during spawning and rearing
B. Kynard, D. Pugh, T. Parker, Micah Kieffer
2011, Journal of Applied Ichthyology (27) 420-424
Young sturgeons used for conservation stocking are presently produced using the same methods used for commercial culture. To determine if young sturgeons could be produced without relaxing natural selection factors, we developed a semi‐natural stream where we annually studied mating of wild shortnose sturgeon (Acipenser brevirostrum) observed movement of gametes...
Absence of remotely triggered large earthquakes beyond the mainshock region
T. Parsons, A.A. Velasco
2011, Nature Geoscience (4) 312-316
Large earthquakes are known to trigger earthquakes elsewhere. Damaging large aftershocks occur close to the mainshock and microearthquakes are triggered by passing seismic waves at significant distances from the mainshock. It is unclear, however, whether bigger, more damaging earthquakes are routinely triggered at distances far from the mainshock, heightening the...
High hunting pressure selects for earlier birth date: Wild boar as a case study
M. Gamelon, A. Besnard, J.-M. Gaillard, S. Servanty, E. Baubet, S. Brandt, O. Gimenez
2011, Evolution (65) 3100-3112
Exploitation by humans affects the size and structure of populations. This has evolutionary and demographic consequences that have typically being studied independent of one another. We here applied a framework recently developed applying quantitative tools from population ecology and selection gradient analysis to quantify the selection on a quantitative trait-birth...
A natural experiment on the condition-dependence of achromatic plumage reflectance in black-capped chickadees
L. D'Alba, Caroline R. Van Hemert, Colleen M. Handel, M.D. Shawkey
2011, PLoS ONE (6)
Honest advertisement models posit that only individuals in good health can produce and/or maintain ornamental traits. Even though disease has profound effects on condition, few studies have experimentally tested its effects on trait expression and even fewer have identified a mechanistic basis for these effects. Recent evidence suggests that black...
Ultramafic-derived arsenic in a fractured bedrock aquifer
P.C. Ryan, J. Kim, A.J. Wall, J.C. Moen, L.G. Corenthal, D.R. Chow, C.M. Sullivan, K.S. Bright
2011, Applied Geochemistry (26) 444-457
In the fractured bedrock aquifer of northern Vermont, USA, As concentrations in groundwater range from <1 to 327??g/L (<13-4360nm/L) and these elevated occurrences have a general spatial association with ultramafic rock bodies. The ultramafic rocks in this region are comprised mainly of serpentinites and talc-magnesite rocks with average As concentration...
Study design and sampling intensity for demographic analyses of bear populations
R.B. Harris, C.C. Schwartz, R.D. Mace, M.A. Haroldson
2011, Ursus (22) 24-36
The rate of population change through time (??) is a fundamental element of a wildlife population's conservation status, yet estimating it with acceptable precision for bears is difficult. For studies that follow known (usually marked) bears, ?? can be estimated during some defined time by applying either life-table or matrix...
Home range dynamics, habitat selection, and survival of Greater Roadrunners
S.W. Kelley, D. Ransom Jr., J.A. Butcher, G.G. Schulz, B.W. Surber, W.E. Pinchak, C.A. Santamaria, L.A. Hurtado
2011, Journal of Field Ornithology (82) 165-174
Greater Roadrunners (Geococcyx californianus) are common, poorly studied birds of arid and semi-arid ecosystems in the southwestern United States. Conservation of this avian predator requires a detailed understanding of their movements and spatial requirements that is currently lacking. From 2006 to 2009, we quantified home-range and core area sizes and...
Remote sensing of soil moisture using airborne hyperspectral data
M. Finn, M. Lewis, D. Bosch, Mario Giraldo, K. Yamamoto, D. Sullivan, R. Kincaid, R. Luna, G. Allam, Craig Kvien, Murray Williams
2011, GIScience and Remote Sensing (48) 522-540
Landscape assessment of soil moisture is critical to understanding the hydrological cycle at the regional scale and in broad-scale studies of biophysical processes affected by global climate changes in temperature and precipitation. Traditional efforts to measure soil moisture have been principally restricted to in situ measurements, so remote sensing techniques...
Toxicity of methylmercury injected into eggs when dissolved in water versus corn oil
Gary H. Heinz, Daivd J. Hoffman, Jon D. Klimstra, Katherine R. Stebbins, Shannon L. Kondrad
2011, Environmental Toxicology and Chemistry (30) 2103-2106
In a previous study, the embryotoxicity of methylmercury dissolved in corn oil was compared among 26 species of birds. Corn oil is not soluble in the water‐based matrix that constitutes the albumen of an egg. To determine whether the use of corn oil limited the usefulness of this earlier study,...
Integration of Palmer Drought Severity Index and remote sensing data to simulate wetland water surface from 1910 to 2009 in Cottonwood Lake area, North Dakota
Shengli Huang, Devendra Dahal, Claudia Young, Gyanesh Chander, Shuguang Liu
2011, Remote Sensing of Environment (115) 3377-3389
Spatiotemporal variations of wetland water in the Prairie Pothole Region are controlled by many factors; two of them are temperature and precipitation that form the basis of the Palmer Drought Severity Index (PDSI). Taking the 196 km2 Cottonwood Lake area in North Dakota as our pilot study site, we integrated PDSI, Landsat...
Adaptive management of natural resources-framework and issues
Byron K. Williams
2011, Journal of Environmental Management (92) 1346-1353
Adaptive management, an approach for simultaneously managing and learning about natural resources, has been around for several decades. Interest in adaptive decision making has grown steadily over that time, and by now many in natural resources conservation claim that...
Are patterns in nutrient limitation belowground consistent with those aboveground: Results from a 4 million year chronosequence
Sasha C. Reed, P.M. Vitousek, C.C. Cleveland
2011, Biogeochemistry (106) 323-336
Accurately predicting the effects of global change on net carbon (C) exchange between terrestrial ecosystems and the atmosphere requires a more complete understanding of how nutrient availability regulates both plant growth and heterotrophic soil respiration. Models of soil development suggest that the nature of nutrient limitation changes over the course...
Improving our legacy: Incorporation of adaptive management into state wildlife action plans
J.J. Fontaine
2011, Journal of Environmental Management (92) 1403-1408
The loss of biodiversity is a mounting concern, but despite numerous attempts there are few large scale conservation efforts that have proven successful in reversing current declines. Given the challenge of biodiversity conservation, there is a need to develop strategic conservation plans that address species declines even with the inherent...
Storage as a Metric of Catchment Comparison
J. P. McNamara, D. Tetzlaff, K. Bishop, C. Soulsby, M. Seyfried, N.E. Peters, Brent T. Aulenbach, R. Hooper
2011, Hydrological Processes (25) 3364-3371
The volume of water stored within a catchment, and its partitioning among groundwater, soil moisture, snowpack, vegetation, and surface water are the variables that ultimately characterize the state of the hydrologic system. Accordingly, storage may provide useful metrics for catchment comparison. Unfortunately, measuring and predicting the amount of water present...
Hydrogeology, Chemical and Microbial Activity Measurement Through Deep Permafrost
R.L. Stotler, S.K. Frape, B.M. Freifeld, B. Holden, T.C. Onstott, T. Ruskeeniemi, E. Chan
2011, Ground Water (49) 348-364
Little is known about hydrogeochemical conditions beneath thick permafrost, particularly in fractured crystalline rock, due to difficulty in accessing this environment. The purpose of this investigation was to develop methods to obtain physical, chemical, and microbial information about the subpermafrost environment from a surface-drilled borehole. Using a U-tube, gas and...
Enhancement of long period components of recorded and synthetic ground motions using InSAR
J.A. Abell, J. Carlos de la Llera, Charles W. Wicks Jr.
2011, Soil Dynamics and Earthquake Engineering (31) 817-829
Tall buildings and flexible structures require a better characterization of long period ground motion spectra than the one provided by current seismic building codes. Motivated by that, a methodology is proposed and tested to improve recorded and synthetic ground motions which are consistent with the observed co-seismic displacement field...
Spectral heterogeneity on Phobos and Deimos: HiRISE observations and comparisons to Mars Pathfinder results
N. Thomas, R. Stelter, A. Ivanov, N.T. Bridges, Kenneth E. Herkenhoff, A. S. McEwen
2011, Planetary and Space Science (59) 1281-1292
The High-Resolution Imaging Science Experiment (HiRISE) onboard Mars Reconnaissance Orbiter (MRO) has been used to observe Phobos and Deimos at spatial scales of around 6 and 20 m/px, respectively. HiRISE (McEwen et al.; JGR, 112, CiteID E05S02, DOI: 10.1029/2005JE002605, 2007) has provided, for the first time, high-resolution colour images of...
Channel evolution on the dammed Elwha River, Washington, USA
A.E. Draut, J.B. Logan, M. C. Mastin
2011, Geomorphology (127) 71-87
Like many rivers in the western U.S., the Elwha River, Washington, has changed substantially over the past century in response to natural and human forcing. The lower river is affected by two upstream dams that are slated for removal as part of a major river restoration effort. In preparation for...
Fishes and tetrapods in the upper pennsylvanian (kasimovian) cohn coal member of the mattoon formation of illinois, United States: Systematics, paleoecology, and paleoenvironments
D. Carpenter, H. J. Falcon-Lang, M.J. Benton, W.J. Nelson
2011, Palaios (26) 639-657
A newly discovered vertebrate assemblage is reported from the Upper Pennsylvanian (mid- to upper Kasimovian) Cohn Coal Member of the Mattoon Formation of southeast Illinois, United States. Teeth, scales, and spines of xenacanth (Dicentrodus, Orthacanthus, Triodus, Xenacanthus) and euselachian (Sphenacanthus) sharks dominate the assemblage. Less common are the teeth, scales,...
Notes on the origin of inertinite macerals in coal: Evidence for fungal and arthropod transformations of degraded macerals
J.C. Hower, J.M.K. O’Keefe, C.F. Eble, A. Raymond, B. Valentim, T.J. Volk, A.R. Richardson, Anne B. Satterwhite, R.S. Hatch, J.D. Stucker, M.A. Watt
2011, International Journal of Coal Geology (86) 231-240
The role of fungus in the formation of coal macerals, both as a primary contributor in the form of a fungus fossil/maceral funginite, and in their role in degrading wood, thus producing degraded maceral forms, has been established. Fungus, in the course of breaking down the lignin and cellulose in wood,...
Users as essential contributors to spatial cyberinfrastructures
B.S. Poore
2011, Conference Paper, Proceedings of the National Academy of Sciences of the United States of America
Current accounts of spatial cyberinfrastructure development tend to overemphasize technologies to the neglect of critical social and cultural issues on which adoption depends. Spatial cyberinfrastructures will have a higher chance of success if users of many types, including nonprofessionals, are made central to the development process. Recent studies in the...
Survival of white-tailed deer neonates in Minnesota and South Dakota
T.W. Grovenburg, C. C. Swanson, C.N. Jacques, R. W. Klaver, T.J. Brinkman, B.M. Burris, C.S. Deperno, J.A. Jenks
2011, Journal of Wildlife Management (75) 213-220
Understanding the influence of intrinsic (e.g., age, birth mass, and sex) and habitat factors on survival of neonate white-tailed deer improves understanding of population ecology. During 2002–2004, we captured and radiocollared 78 neonates in eastern South Dakota and southwestern Minnesota, of which 16 died before 1 September. Predation accounted for...
Review: Regional land subsidence accompanying groundwater extraction
Devin L. Galloway, Thomas J. Burbey
2011, Hydrogeology Journal (19) 1459-1486
The extraction of groundwater can generate land subsidence by causing the compaction of susceptible aquifer systems, typically unconsolidated alluvial or basin-fill aquifer systems comprising aquifers and aquitards. Various ground-based and remotely sensed methods are used to measure and map subsidence. Many areas of subsidence caused by groundwater pumping have been...
