Considerations for developing wolf harvesting regulations in the contiguous United States
L. David Mech
2010, Journal of Wildlife Management (74) 1421-1424
As gray wolves (Canis lupus) are removed from the federal Endangered Species List, management reverts to the states. Eventually most states will probably allow public wolf harvesting. Open seasons between about 1 November and 1 March accord more with basic wolf biology than during other times. Managers who consider wolf...
A method of mounting multiple otoliths for beam-based microchemical analyses
C.J. Donohoe, Christian E. Zimmerman
2010, Environmental Biology of Fishes (89) 473-477
Beam-based analytical methods are widely used to measure the concentrations of elements and isotopes in otoliths. These methods usually require that otoliths be individually mounted and prepared to properly expose the desired growth region to the analytical beam. Most analytical instruments, such as LA-ICPMS and ion and electron microprobes, have...
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...
Stratigraphic response across a structurally dynamic shelf: The latest guadalupian composite sequence at Walnut Canyon, New Mexico, U.S.A
J. Rush, C. Kerans
2010, Journal of Sedimentary Research (80) 808-828
The uppermost Yates and Tansill formations (Late Permian), as exposed along Walnut Canyon in Carlsbad Caverns National Park, New Mexico, USA, provide a unique opportunity to document the depositional architecture of a progradational, oversteepened, and mechanically failure-prone carbonate platform. Detailed facies mapping permitted critical assessment of depositional processes operating along...
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...
Hurricane storm surge and amphibian communities in coastal wetlands of northwestern Florida
Margaret S. Gunzburger, William B. Hughes, William J. Barichivich, Jennifer S. Staiger
2010, Wetlands Ecology and Management (18) 651-663
Isolated wetlands in the Southeastern United States are dynamic habitats subject to fluctuating environmental conditions. Wetlands located near marine environments are subject to alterations in water chemistry due to storm surge during hurricanes. The objective of our study was to evaluate the effect of storm surge overwash on wetland amphibian...
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...
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...
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...
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,...
Shallow magma accumulation at Kīlauea Volcano, Hawai‘i, revealed by microgravity surveys
Daniel J. Johnson, Albert A. Eggers, Marco Bagnardi, Maurizio Battaglia, Michael P. Poland, Asta Miklius
2010, Geology (38) 1139-1142
Using microgravity data collected at Kīlauea Volcano, Hawai‘i (United States), between November 1975 and January 2008, we document significant mass increase beneath the east margin of Halema‘uma‘u Crater, within Kīlauea's summit caldera. Surprisingly, there was no sustained uplift accompanying the mass accumulation. We propose that the positive gravity residual in...
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 =...
Micromorphology and stable-isotope geochemistry of historical pedogenic siderite formed in PAH-contaminated alluvial clay soils, Tennessee, U.S.A
S.G. Driese, Greg A. Ludvigson, J.A. Roberts, D.A. Fowle, Luis A. Gonzalez, J.J. Smith, V.M. Vulava, L.D. McKay
2010, Journal of Sedimentary Research (80) 943-954
Alluvial clay soil samples from six boreholes advanced to depths of 400-450 cm (top of limestone bedrock) from the Chattanooga Coke Plant (CCP) site were examined micromorphologically and geochemically in order to determine if pedogenic siderite (FeCO3) was present and whether siderite occurrence was related to organic contaminant distribution. Samples...
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...
National ecosystem assessments supported by scientific and local knowledge
J. E. Herrick, V.C. Lessard, K.E. Spaeth, P.L. Shaver, R.S. Dayton, D.A. Pyke, L. Jolley, J.J. Goebel
2010, Frontiers in Ecology and the Environment (8) 403-408
An understanding of the extent of land degradation and recovery is necessary to guide land-use policy and management, yet currently available land-quality assessments are widely known to be inadequate. Here, we present the results of the first statistically based application of a new approach to national assessments that integrates scientific...
Growth, condition factor, and bioenergetics modeling link warmer stream temperatures below a small dam to reduced performance of juvenile steelhead
S.T. Sauter, P.J. Connolly
2010, Northwest Science (84) 369-377
We investigated the growth and feeding performance of juvenile steelhead Oncorhynchus mykiss using field measures and bioenergetics modeling. Juvenile steelhead populations were sampled from mid-June through August 2004 at study sites upstream and downstream of Hemlock Dam. The growth and diet of juvenile steelhead were determined for a warm (summer)...
Using noble gases measured in spring discharge to trace hydrothermal processes in the Norris Geyser Basin, Yellowstone National Park, U.S.A.
W.P. Gardner, D. D. Susong, D. K. Solomon, H.P. Heasler
2010, Journal of Volcanology and Geothermal Research (198) 394-404
Dissolved noble gas concentrations in springs are used to investigate boiling of hydrothermal water and mixing of hydrothermal and shallow cool water in the Norris Geyser Basin area. Noble gas concentrations in water are modeled for single stage and continuous steam removal. Limitations on boiling using noble gas concentrations are...
Dynamics and spatio-temporal variability of environmental factors in Eastern Australia using functional principal component analysis
J.K. Szabo, E.M. Fedriani, M. M. Segovia-Gonzalez, L.B. Astheimer, M.J. Hooper
2010, Journal of Biological Systems (18) 763-785
This paper introduces a new technique in ecology to analyze spatial and temporal variability in environmental variables. By using simple statistics, we explore the relations between abiotic and biotic variables that influence animal distributions. However, spatial and temporal variability in rainfall, a key variable in ecological studies, can cause difficulties...
The Medieval Climate Anomaly and Little Ice Age in Chesapeake Bay and the North Atlantic Ocean
T. M. Cronin, K. Hayo, R.C. Thunell, G. S. Dwyer, C. Saenger, Debra A. Willard
2010, Palaeogeography, Palaeoclimatology, Palaeoecology (297) 299-310
A new 2400-year paleoclimate reconstruction from Chesapeake Bay (CB) (eastern US) was compared to other paleoclimate records in the North Atlantic region to evaluate climate variability during the Medieval Climate Anomaly (MCA) and Little Ice Age (LIA). Using Mg/Ca ratios from ostracodes and oxygen isotopes from benthic foraminifera as proxies...
Contrasting activity patterns of sympatric and allopatric black and grizzly bears
C.C. Schwartz, S.L. Cain, S. Podruzny, S. Cherry, L. Frattaroli
2010, Journal of Wildlife Management (74) 1628-1638
The distribution of grizzly (Ursus arctos) and American black bears (U. americanus) overlaps in western North America. Few studies have detailed activity patterns where the species are sympatric and no studies contrasted patterns where populations are both sympatric and allopatric. We contrasted activity patterns for sympatric black and grizzly bears...
Simulation and analysis of conjunctive use with MODFLOW's farm process
R. T. Hanson, W. Schmid, C.C. Faunt, B. Lockwood
2010, Ground Water (48) 674-689
The extension of MODFLOW onto the landscape with the Farm Process (MF-FMP) facilitates fully coupled simulation of the use and movement of water from precipitation, streamflow and runoff, groundwater flow, and consumption by natural and agricultural vegetation throughout the hydrologic system at all times. This allows for more complete analysis...
A comparative analysis of double-crested cormorant diets from stomachs and pellets from two Lake Ontario colonies
James H. Johnson, Robert M. Ross, Russell D. McCullough, Alastair Mathers
2010, Journal of Freshwater Ecology (25) 669-672
Double-crested cormorant (Phalacrocorax auritus) diets were compared with evidence from the stomachs of shot birds and from regurgitated pellets at High Bluff Island and Little Galloo Island, Lake Ontario. The highest similarity in diets determined by stomach and pellet analyses occurred when both samples were collected on the same day....
A methodology for ecosystem-scale modeling of selenium
Theresa S. Presser, Samuel N. Luoma
2010, Integrated Environmental Assessment and Management (6) 685-710
The main route of exposure for selenium (Se) is dietary, yet regulations lack biologically based protocols for evaluations of risk. We propose here an ecosystem-scale model that conceptualizes and quantifies the variables that determinehow Se is processed from water through diet to predators. This approach uses biogeochemical and physiological factors...
The tail of the Storegga Slide: Insights from the geochemistry and sedimentology of the Norwegian Basin deposits
C. K. Paull, W. Ussler III, W.S. Holbrook, T.M. Hill, H. Haflidason, W. Winters, T. Lorenson, I. Aiello, J.E. Johnson, E. Lundsten
2010, Sedimentology (57) 1409-1429
Deposits within the floor of the Norwegian Basin were sampled to characterize the deposition from the Storegga Slide, the largest known Holocene-aged continental margin slope failure complex. A 29 to 67 cm thick veneer of variable-coloured, finely layered Holocene sediment caps a homogeneous, extremely well-sorted, poorly consolidated, very fine-grained, grey-coloured...
Reptile and amphibian responses to large-scale wildfires in southern California
C.J. Rochester, C.S. Brehme, D.R. Clark, D.C. Stokes, S.A. Hathaway, Robert N. Fisher
2010, Journal of Herpetology (44) 333-351
In 2003, southern California experienced several large fires that burned thousands of hectares of wildlife habitats and conserved lands. To investigate the effects of these fires on the reptile and amphibian communities, we compared the results from prefire herpetofauna and vegetation sampling to two years of postfire sampling across 38...
