Predicting species distributions from checklist data using site-occupancy models
M. Kery, B. Gardner, C. Monnerat
2010, Journal of Biogeography (37) 1851-1862
Aim: (1) To increase awareness of the challenges induced by imperfect detection, which is a fundamental issue in species distribution modelling; (2) to emphasize the value of replicate observations for species distribution modelling; and (3) to show how 'cheap' checklist data in faunal/floral databases may be used for the rigorous...
Shell anomalies observed in a population of Archaias angulatus (Foraminifera) from the Florida Keys (USA) sampled in 1982-83 and 2006-07
H.C. Souder, B. McCloskey, P. Hallock, R. Byrne
2010, Marine Micropaleontology (77) 71-81
Archived specimens of Archaias angulatus collected live at a depth of < 2. m in John Pennekamp Coral Reef State Park, Key Largo, Florida, in June, September and December 1982, and March 1983, were compared to specimens collected live from the same site and months in 2006-07. Shells were examined...
A 15 000-year record of climate change in northern New Mexico, USA, inferred from isotopic and elemental contents of bog sediments
L. M. Cisneros-Dozal, J.M. Heikoop, J. Fessenden, R. Scott Anderson, P.A. Meyers, Craig D. Allen, M. Hess, T. Larson, G. Perkins, M. Rearick
2010, Journal of Quaternary Science (25) 1001-1007
Elemental (C, N, Pb) and isotopic (δ13C, δ15N) measurements of cored sediment from a small bog in northern New Mexico reveal changes in climate during the Late Pleistocene and Holocene. Abrupt increases in Pb concentration and δ13C values ca. 14 420 cal. YBP indicate significant runoff to the shallow lake that...
Potential environmental influences on variation in body size and sexual size dimorphism among Arizona populations of the western diamond-backed rattlesnake (Crotalus atrox)
Melissa Amarello, Erica M. Nowak, Emily N. Taylor, Gordon W. Schuett, Roger A. Repp, Philip C. Rosen, David L. Hardy Sr.
2010, Journal of Arid Environments (74) 1443-1449
Differences in resource availability and quality along environmental gradients are important influences contributing to intraspecific variation in body size, which influences numerous life-history traits. Here, we examined variation in body size and sexual size dimorphism (SSD) in relation to temperature, seasonality, and precipitation among 10 populations located throughout Arizona of...
Sharing the floodplain: Mediated modeling for environmental management
S.S. Metcalf, E. Wheeler, T. K. BenDor, S.J. Lubinski, B.M. Hannon
2010, Environmental Modelling and Software (25) 1282-1290
Complex ecosystems, such as the Upper Mississippi River (UMR), present major management challenges. Such systems often provide a range of ecosystem services that are differentially valued by stakeholders representing distinct interests (e.g., agriculture, conservation, navigation) or institutions (e.g., federal and state agencies). When no single entity has the knowledge or...
Genetic characterization of Neotropical Jabiru Storks: Insights for conservation
I.F. Lopes, S. M. Haig, S.N.D. Lama
2010, Waterbirds (33) 425-437
Jabiru Stork (Jabiru mycteria is listed under Appendix I of CITES and considered threatened in Central America. The first population genetic analysis of Jabiru Storks was carried out using mitochondrial DNA (mtDNA) control region sequences (520 bp) and five heterologous microsatellite loci. Samples were collected from the field (N =...
The role of African dust in the formation of Quaternary soils on Mallorca, Spain and implications for the genesis of Red Mediterranean soils
D.R. Muhs, J. Budahn, A. Avila, G. Skipp, J. Freeman, D. Patterson
2010, Quaternary Science Reviews (29) 2518-2543
African dust additions explain the origin of terra rossa soils that are common on the carbonate-platform island of Mallorca, Spain. Mineralogical and geochemical analyses indicate that Quaternary carbonate eolianites on Mallorca have a very high purity, usually composed of more than 90% carbonate minerals (calcite, dolomite, and aragonite). In contrast,...
Experimental investigation of observation error in anuran call surveys
B.T. McClintock, L.L. Bailey, K. H. Pollock, T.R. Simons
2010, Journal of Wildlife Management (74) 1882-1893
Occupancy models that account for imperfect detection are often used to monitor anuran and songbird species occurrence. However, presenceabsence data arising from auditory detections may be more prone to observation error (e.g., false-positive detections) than are sampling approaches utilizing physical captures or sightings of individuals. We conducted realistic, replicated field...
Reference condition approach to restoration planning
J.M. Nestler, C.H. Theiling, S.J. Lubinski, D.L. Smith
2010, River Research and Applications (26) 1199-1219
Ecosystem restoration planning requires quantitative rigor to evaluate alternatives, define end states, report progress and perform environmental benefits analysis (EBA). Unfortunately, existing planning frameworks are, at best, semi-quantitative. In this paper, we: (1) describe a quantitative restoration planning approach based on a comprehensive, but simple mathematical framework that can be...
Tree-ring cutting dates and demographic change in the Southern Colorado Plateau and Rio Grande regions
Michael S. Berry, Larry V. Benson
Timothy A. Kohler, Mark D. Varien, Aaron M. Wright, editor(s)
2010, Book chapter, Leaving Mesa Verde: Peril and change in the thirteenth-century Southwest
No abstract available....
Report of the COSPAR mars special regions colloquium
G. Kminek, J.D. Rummel, C.S. Cockell, R. Atlas, N. Barlow, D. Beaty, W. Boynton, M. Carr, S. Clifford, C.A. Conley, A.F. Davila, A. Debus, P. Doran, M. Hecht, J. Heldmann, J. Helbert, V. Hipkin, G. Horneck, Thomas L. Kieft, G. Klingelhoefer, M. Meyer, H. Newsom, G.G. Ori, J. Parnell, D. Prieur, F. Raulin, D. Schulze-Makuch, J.A. Spry, P.E. Stabekis, E. Stackebrandt, J. Vago, M. Viso, M. Voytek, L. Wells, F. Westall
2010, Advances in Space Research (46) 811-829
In this paper we present the findings of a COSPAR Mars Special Regions Colloquium held in Rome in 2007. We review and discuss the definition of Mars Special Regions, the physical parameters used to define Mars Special Regions, and physical features on Mars that can be interpreted as Mars Special...
Comparison of watershed disturbance predictive models for stream benthic macroinvertebrates for three distinct ecoregions in western US
Ian R. Waite, Larry R. Brown, Jonathan G. Kennen, Jason T. May, Thomas F. Cuffney, James L. Orlando, Kimberly A. Jones
2010, Ecological Indicators (10) 1125-1136
The successful use of macroinvertebrates as indicators of stream condition in bioassessments has led to heightened interest throughout the scientific community in the prediction of stream condition. For example, predictive models are increasingly being developed that use measures of watershed disturbance, including urban and agricultural land-use, as explanatory variables to...
Short baseline variations in site response and wave-propagation effects and their structural causes: Four examples in and around the santa clara valley, California
S. Hartzell, L. Ramirez-Guzman, D. Carver, P. Liu
2010, Bulletin of the Seismological Society of America (100) 2264-2286
Ground motion records of local and regional events from a portable array are used to investigate the structural causes of variations in ground motion over distances of a few hundred meters to a few kilometers in the sedimentary basin environment of the Santa Clara Valley, California, and its margins. Arrays...
Phytochemistry of the fossilized-cuticle frond Macroneuropteris macrophylla (Pennsylvanian seed fern, Canada)
E.L. Zodrow, J. A. D’Angelo, Maria Mastalerz, C.J. Cleal, D. Keefe
2010, International Journal of Coal Geology (84) 71-82
In Canada's Sydney Coalfield, specimens of the extinct Carboniferous seed fern Macroneuropteris macrophylla (Brongniart) invariably show preservation stages intermediate between compression and fossilized-cuticle, even concerning a single pinnule. In this interdisciplinary approach, we study a ca. 300 to 350 mm long fossilized-cuticle-preserved frond section of M. macrophylla (Brongniart) that represents...
Seismic imaging of a fractured gas hydrate system in the Krishna-Godavari Basin offshore India
M. Riedel, T. S. Collett, P. Kumar, A.V. Sathe, A. Cook
2010, Marine and Petroleum Geology (27) 1476-1493
Gas hydrate was discovered in the Krishna-Godavari (KG) Basin during the India National Gas Hydrate Program (NGHP) Expedition 1 at Site NGHP-01-10 within a fractured clay-dominated sedimentary system. Logging-while-drilling (LWD), coring, and wire-line logging confirmed gas hydrate dominantly in fractures at four borehole sites spanning a 500m transect. Three-dimensional (3D)...
Grid-size dependence of Cauchy boundary conditions used to simulate stream-aquifer interactions
S. Mehl, M. C. Hill
2010, Advances in Water Resources (33) 430-442
This work examines the simulation of stream–aquifer interactions as grids are refined vertically and horizontally and suggests that traditional methods for calculating conductance can produce inappropriate values when the grid size is changed. Instead, different grid resolutions require different estimated values. Grid refinement strategies considered include global refinement of the...
A practitioner's tool for assessing glide crack activity
Jordy Hendrikx, Erich H. Peitzsch, Daniel B. Fagre
2010, Conference Paper, Proceedings, 2010 International Snow Science Workshop
Glide cracks can result in full-depth glide avalanche release. Avalanches from glide cracks are notoriously difficult to forecast, but are a reoccurring problem in a number of different avalanche forecasting programs across a range of snow climates. Despite this, there is no consensus for how to best manage, mitigate, or...
A review of silver-rich mineral deposits and their metallogeny
Frederick Graybeal, Peter G. Vikre
2010, Book chapter, The challenge of finding new mineral resources: Global metallogeny, innovative exploration, and new discoveries; SEG Special Publication 15 Vol. 1
Mineral deposits with large inventories or high grades of silver are found in four genetic groups: (1) volcanogenic massive sulfide (VMS), (2) sedimentary exhalative (SEDEX), (3) lithogene, and, (4) magmatichydrothermal. Principal differences between the four groups relate to source rocks and regions, metal associations, process and timing of mineralization, and...
Geologic controls on thermal maturity patterns in Pennsylvanian coal-bearing rocks in the Appalachian basin
Leslie F. Ruppert, James C. Hower, Robert T. Ryder, Jeffrey R. Levine, Michael H. Trippi, William C. Grady
2010, International Journal of Coal Geology (81) 169-181
Thermal maturation patterns of Pennsylvanian strata in the Appalachian basin were determined by compiling and contouring published and unpublished vitrinite reflectance (VR) measurements. VR isograd values range from 0.6% in eastern Ohio and eastern Kentucky (western side of the East Kentucky coal field) to greater than 5.5% in eastern Pennsylvania (Southern Anthracite field,...
Characterizing wet slab and glide slab avalanche occurrence along the Going-to-the-Sun Road, Glacier National Park, Montana, USA
Erich H. Peitzsch, Jordy Hendrikx, Daniel B. Fagre, Blase Reardon
2010, Conference Paper, Proceedings: 2010 international snow science workshop
Wet slab and glide slab snow avalanches are dangerous and yet can be particularly difficult to predict. Both wet slab and glide slab avalanches are thought to depend upon free water moving through the snowpack but are driven by different processes. In Glacier National Park, Montana, both types of avalanches...
Protocol for statistical analysis of vegetation changes at Catoctin Mountain Park
Jeff S. Hatfield, Cairn Krafft
2010, Natural Resource Report NPS/NCR/NCRO/NRTR2010/001
Vegetation data collected at Catoctin Mountain Park, Maryland, in a split-panel rotation design during 2004-2009 were analyzed for differences among three regions within the park and among years. Six plots were paired with plots fenced to exclude white-tailed deer (Odocoileus virginianus), and differences between open and exclosed plots were...
Controls on biochemical oxygen demand in the upper Klamath River, Oregon
Annett B. Sullivan, Dean M. Snyder, Stewart A. Rounds
2010, Chemical Geology (269) 12-21
A series of 30-day biochemical oxygen demand (BOD) experiments were conducted on water column samples from a reach of the upper Klamath River that experiences hypoxia and anoxia in summer. Samples were incubated with added nitrification inhibitor to measure carbonaceous BOD (CBOD), untreated to measure total BOD, which included demand...
Transient electromagnetic mapping of clay units in the San Luis Valley, Colorado
David V. Fitterman, V. J. S. Grauch
2010, Conference Paper, Symposium on the Application of Geophysics to Engineering and Environmental Problems 2010
Transient electromagnetic soundings were used to obtain information needed to refine hydrologic models of the San Luis Valley, Colorado. The soundings were able to map an aquitard called the blue clay that separates an unconfined surface aquifer from a deeper confined aquifer. The blue clay forms a conductor with an average...
Estimating groundwater recharge
Richard W. Healy
2010, Book
Understanding groundwater recharge is essential for successful management of water resources and modeling fluid and contaminant transport within the subsurface. This book provides a critical evaluation of the theory and assumptions that underlie methods for estimating rates of groundwater recharge. Detailed explanations of the methods are provided - allowing readers...
The age of the Steens reversal and the Columbia River Basalt Group
Nicholas A. Jarboe, Robert S. Coe, Paul R. Renne, Jonathan M. G. Glen
2010, Chemical Geology (274) 158-168
The Columbia River Basalt Group (CRBG) eruptions have a well-defined relative magnetostratigraphy but have not been definitively correlated to the geomagnetic polarity time scale. 40Ar/39Ar ages are presented from lavas erupted in the R0 through N1magnetozones of the CRBG and in the transition between R0 and N0. Four ages from transitionally magnetized lava flows at Steens Mountain,...
