Ontogenesis of endangered humpback chub (Gila cypha) in the Little Colorado River, Arizona
Dennis M. Stone, Owen T. Gorman
2006, American Midland Naturalist (155) 123-135
The largest population of endangered humpback chub Gila cypha inhabits the Colorado River below Glen Canyon Dam and the lower 14 km of the Little Colorado River (LCR), Arizona. Currently, adults from both rivers spawn and their progenies grow and recruit to adulthood primarily within the LCR, where we studied G....
New geographic records of Hamlets, Hypoplectrus spp. (Serranidae), in the Caribbean Sea
Ernest H. Williams Jr., Lucy Bunkley-Williams, Caroline S. Rogers, Robert Fenner
2006, Revista de Biología Tropical: International Journal of Tropical Biology and Conservation (54) 171-173
The exact number of species of hamlets, Hypoplectrus spp., in the Caribbean is controversial and the geographic distributions of these species/forms are poorly documented. We report Curaçao, Netherlands Antilles, as a new locality for the Barred Hamlet, H. puella (Cuvier), and Shy Hamlet, H. guttavarius (Poey); and St. John and St. Thomas, U.S. Virgin Islands, for...
The effects of wetland habitat structure on Florida apple snail density
L.B. Karunaratne, P.C. Darby, R.E. Bennetts
2006, Wetlands (26) 1143-1150
Wetlands often support a variety of juxtaposed habitat patches (e.g., grass-, shrub- or tree-dominated) differentially suited to support the inhabiting fauna. The proportion of available habitat types has been affected by human activity and consequently has contributed to degrading habitat quality for some species. The Florida apple snail (Pomacea paludosa)...
Chapter 9 The magma feeding system of Somma-Vesuvius (Italy) strato-volcano: New inferences from a review of geochemical and Sr, Nd, Pb and O isotope data
M. Piochi, B. de Vivo, R. A. Ayuso
2006, Developments in Volcanology (9) 181-202
A large database of major, trace and isotope (Sr, Nd, Pb, O) data exists for rocks produced by the volcanic activity of Somma-Vesuvius volcano. Variation diagrams strongly suggest a major role for evolutionary processes such as fractional crystallization, contamination, crystal trapping and magma maxing, occurring after magma genesis in the...
Eco-informatics and natural resource management
J.B. Cushing, T. Wilson, A. Borning, L. Delcambre, G. Bowker, Mike Frame, J. Schnase, W. Sonntag, J. Fulop, C. Hert, E. Hovy, J. Jones, E. Landis, C. Schweik, L. Brandt, V. Gregg, S. Spengler
2006, Conference Paper, ACM International Conference Proceeding Series
This project highlight reports on the 2004 workshop [1], as well as follow-up activities in 2005 and 2006, regarding how informatics tools can help manage natural resources and decide policy. The workshop was sponsored jointly by sponsored by the NSF, NBII, NASA, and EPA, and attended by practitioners from government...
The Hancock County tetrapod locality: A new Mississippian (Chesterian) wetlands fauna from western Kentucky (USA)
W.J. Garcia, G.W. Storrs, S.F. Greb
2006, Special Paper of the Geological Society of America 155-167
The earliest tetrapods are known from a handful of Upper Devonian and Lower Carboniferous localities in Europe, North America, and Australia. All Upper Devonian sites and virtually all Early Carboniferous faunas are regarded as predominantly aquatic and most occur within, or are associated with, wetland habitats. A new mid- Carboniferous...
Gimme shelter: The importance of crevices to some fish species inhabiting a deeper-water rocky outcrop in Southern California
M.S. Love, D.M. Schroeder, B. Lenarz, G.R. Cochrane
2006, California Cooperative Oceanic Fisheries Investigations Reports (47) 119-126
Federal law governing fisheries management recognizes the role habitat plays in structuring fish assemblages and achieving sustainable fisheries. However, in most instances it is not known which aspects of habitat are important to the lives of fish species. In 2004, we examined the importance of sheltering sites (crevices) to fishes...
Integrating field research, modeling and remote sensing to quantify morphodynamics in a high-energy coastal setting, ocean beach, San Francisco, California
P.L. Barnard, D.M. Hanes
2006, Conference Paper, Coastal Dynamics 2005 - Proceedings of the Fifth Coastal Dynamics International Conference
Wave and coastal circulation modeling are combined with multibeam bathymetry, high-resolution beach surveys, cross-shore Personal Water Craft surveys, digital bed sediment camera surveys, and real-time video monitoring to quantify morphological change and nearshore processes at Ocean Beach, San Francisco. Initial SWAN (Simulating Waves Nearshore) wave modeling results show a focusing...
Phylogeography and spatial genetic structure of the southern torrent salamander: Implications for conservation and management
Mark P. Miller, Susan M. Haig, R.S. Wagner
2006, Journal of Heredity (97) 561-570
The Southern torrent salamander (Rhyacotriton variegatus) was recently found not warranted for listing under the US Endangered Species Act due to lack of information regarding population fragmentation and gene flow. Found in small-order streams associated with late-successional coniferous forests of the US Pacific Northwest, threats to their persistence include disturbance...
Water-quality characteristics and contaminants in the rural karst-dominated Spring Mill Lake watershed, southern Indiana
N.R. Hasenmueller, M.A. Buehler, N.C. Krothe, J.B. Comer, T.D. Branam, M.V. Ennis, R.T. Smith, D.D. Zamani, L. Hahn, J.P. Rybarczyk
2006, Special Paper of the Geological Society of America 153-167
The Spring Mill Lake watershed is located in the Mitchell Plateau, a karst area that developed on Mississippian carbonates in southern Indiana. Spring Mill Lake is a reservoir built in the late 1930s and is located in Spring Mill State Park. Within the park, groundwater from subsurface conduits issues as...
Use of the moon to support on-orbit sensor calibration for climate change measurements
T.C. Stone, H. H. Kieffer
2006, Conference Paper, Proceedings of SPIE - The International Society for Optical Engineering
Production of reliable climate datasets from multiple observational measurements acquired by remote sensing satellite systems available now and in the future places stringent requirements on the stability of sensors and consistency among the instruments and platforms. Detecting trends in environmental parameters measured at solar reflectance wavelengths (0.3 to 2.5 microns)...
Vicarious calibration of GOES imager visible channel using the moon
X. Wu, T.C. Stone, F. Yu, D. Han
2006, Conference Paper, Proceedings of SPIE - The International Society for Optical Engineering
In this paper, we study the feasibility of a method for vicarious calibration of the GOES Imager visible channel using the Moon. The measured Moon irradiance from 26 undipped moon imagers exhausted all the potential Moon appearances between July 1998 and December 2005, together with the seven scheduled Moon observation...
Seismic evidence for rock damage and healing on the San Andreas fault associated with the 2004 M 6.0 Parkfield earthquake
Y.-G. Li, P. Chen, E.S. Cochran, J.E. Vidale, T. Burdette
2006, Bulletin of the Seismological Society of America (96)
We deployed a dense linear array of 45 seismometers across and along the San Andreas fault near Parkfield a week after the M 6.0 Parkfield earthquake on 28 September 2004 to record fault-zone seismic waves generated by aftershocks and explosions. Seismic stations and explosions were co-sited with our previous experiment...
Uranium-series constraints on subrepository water flow at yucca mountain, nevada
L.A. Neymark, S.J. Chipera, J.B. Paces, D. T. Vaniman
2006, Conference Paper, Proceedings of the 11th International High Level Radioactive Waste Management Conference, IHLRWM
Mineral abundances and whole-rock chemical and uranium-series isotopic compositions were measured in unfractured and rubble core samples from borehole USW SD-9 in the same layers of variably zeolitized tuffs that underlie the proposed nuclear waste repository at Yucca Mountain, Nevada. Uranium concentrations and isotopic compositions also were measured in pore...
Measurements of the diurnal cycle of temperature, humidity, wind, and carbon dioxide in a subalpine forest during the carbon in the mountains experiment (CME04)
Sean P. Burns, Jielun Sun, S.P. Oncley, A.C. Delany, B.B. Stephens, D.E. Anderson, D. S. Schimel, D.H. Lenschow, Russell K. Monson
2006, Conference Paper, 17th Symposium on Boundary Layers and Turbulence, 27th Conference on Agricultural and Forest Meteorology, 17th Conference on Biometeorology and Aerobiology
[No abstract available]...
Development of spatially diverse and complex dune-field patterns: Gran Desierto Dune Field, Sonora, Mexico
C. Beveridge, G. Kocurek, R.C. Ewing, N. Lancaster, P. Morthekai, A.K. Singhvi, S. A. Mahan
2006, Sedimentology (53) 1391-1409
The pattern of dunes within the Gran Desierto of Sonora, Mexico, is both spatially diverse and complex. Identification of the pattern components from remote-sensing images, combined with statistical analysis of their measured parameters demonstrate that the composite pattern consists of separate populations of simple dune patterns. Age-bracketing by optically stimulated...
Phylogeography and spatial genetic structure of the Southern torrent salamander: Implications for conservation and management
M.P. Miller, S. M. Haig, R.S. Wagner
2006, Journal of Heredity (97) 561-570
The Southern torrent salamander (Rhyacotriton variegatus) was recently found not warranted for listing under the US Endangered Species Act due to lack of information regarding population fragmentation and gene flow. Found in small-order streams associated with late-successional coniferous forests of the US Pacific Northwest, threats to their persistence include disturbance...
The study of ozone variations in the Las Vegas metropolitan area using remote sensing information and ground observations
G. Xian, M. Crane
2006, Conference Paper, 86th AMS Annual Meeting
Urban development in the Las Vegas Valley, Nevada, has grown rapidly in the past fifty years. Associated with this growth has been a change in landscape from natural cover types to developed urban land mixed with planned vegetation canopy throughout in the metropolitan area. Air quality in the Las Vegas...
Diagenetic alteration of impact spherules in the Neoarchean Monteville layer, South Africa
I. Kohl, B.M. Simonson, M. Berke
2006, Special Paper of the Geological Society of America 57-73
Intercontinental correlation of distal Archean impact ejecta layers can be used to help create a global time-stratigraphic framework for early Earth events. For example, an impact spherule layer in the Neoarchean Monteville Formation (Griqualand West Basin, South Africa) may be correlated with layers in one or more formations in Western...
Integrated biostratigraphy of foraminifers, radiolarians and conodonts in shallow and deep water Middle Permian (Capitanian) deposits of the "Rader slide", Guadalupe Mountains, West Texas
M.K. Nestell, G.P. Nestell, B. R. Wardlaw, M.J. Sweatt
2006, Stratigraphy (3) 161-194
A diverse assemblage of microfossils is present in a 6m thick sequence of three debris flow deposits interbedded with thin turbidite limestone beds and fine grained siliciclastics exposed above the megaconglomerate in a section (known as the "Rader Slide" in numerous guidebook stops) of the Rader Limestone Member of the...
The role of sandstone in the development of an Ozark karst system, south-central Missouri
R. C. Orndorff, D. J. Weary, R.W. Harrison
2006, Special Paper of the Geological Society of America 31-38
Cave, spring, and sinkhole development in the Ozarks of south-central Missouri is placed in a geologic framework through detailed geologic mapping. Geologic mapping shows that initial dissolution and inception of cave development is concentrated just beneath sandstone beds within Upper Cambrian and Lower Ordovician dolostone. Although rocks of the Ozarks...
Mercury in water and biomass of microbial communities in hot springs of Yellowstone National Park, USA
S.A. King, S. Behnke, K. Slack, D. P. Krabbenhoft, D. Kirk Nordstrom, M.D. Burr, Robert G. Striegl
2006, Applied Geochemistry (21) 1868-1879
Ultra-clean sampling methods and approaches typically used in pristine environments were applied to quantify concentrations of Hg species in water and microbial biomass from hot springs of Yellowstone National Park, features that are geologically enriched with Hg. Microbial populations of chemically-diverse hot springs were also characterized using modern methods in...
An integrated chronostratigraphic data system for the twenty-first century
P.J. Sikora, James G. Ogg, A. Gary, C. Cervato, Felix Gradstein, B.T. Huber, C. Marshall, J.A. Stein, B. Wardlaw
2006, Special Paper of the Geological Society of America 53-59
Research in stratigraphy is increasingly multidisciplinary and conducted by diverse research teams whose members can be widely separated. This developing distributed-research process, facilitated by the availability of the Internet, promises tremendous future benefits to researchers. However, its full potential is hindered by the absence of a development strategy for the...
Prediction failure of a wolf landscape model
L.D. Mech
2006, Wildlife Society Bulletin (34) 874-877
I compared 101 wolf (Canis lupus) pack territories formed in Wisconsin during 1993-2004 to the logistic regression predictive model of Mladenoff et al. (1995, 1997, 1999). Of these, 60% were located in putative habitat suitabilities <50%, including 22% in suitabilities of 0-9%. About a third of the area with putative...
Traversing a boreal forest landscape: Summer movements of Tule Greater White-fronted Geese
Craig R. Ely, K.S. Bollinger, Jerry W. Hupp, D.V. Derksen, J. Terenzi, John Y. Takekawa, D.L. Orthmeyer, T.C. Rothe, M.J. Petrula, D.R. Yparraguirre
2006, Waterbirds (29) 43-55
We monitored the movement, distribution and site affinities of radio-marked Tule Greater White-fronted Geese (Anser albifrons elgasi) during spring and summer in Alaska, 1994-1997 and 2004. Our assessment of summer movements was comprehensive, as locations were obtained during prenesting, nesting, and molt for over 90% of geese with active radios...
