Quickly erupted volcanic sections of the Steens Basalt, Columbia River Basalt Group: Secular variation, tectonic rotation, and the Steens Mountain reversal
Nicholas A. Jarboe, Robert S. Coe, Paul R. Renne, Jonathan M. G. Glen, Edward A. Mankinen
2008, Geochemistry, Geophysics, Geosystems (9)
The Steens Basalt, now considered part of the Columbia River Basalt Group (CRBG), contains the earliest eruptions of this magmatic episode. Lava flows of the Steens Basalt cover about 50,000 km2 of the Oregon Plateau in sections up to 1000 m thick. The large number of continuously exposed, quickly...
Molt and aging criteria for four North American grassland passerines
Peter Pyle, Stephanie L. Jones, Janet M. Ruth
2008, Biological Technical Publication BTP-R6011-2008
Prairie and grassland habitats in central and western North America have declined substantially since settlement by Europeans (Knopf 1994) and many of the birds and other organisms that inhabit North American grasslands have experienced steep declines (Peterjohn and Sauer 1999; Johnson and Igl 1997; Sauer, Hines, and Fallon 2007). The...
Preliminary report on the 29 July 2008 Mw 5.4 Chino Hills, Eastern Los Angeles Basin, California, earthquake sequence
Egill Hauksson, Karen R. Felzer, Doug Given, Michal Giveon, Susan E. Hough, Kate Hutton, Hiroo Kanamori, Volkan Sevilgen, Shengji Wei, Alan K. Yong
2008, Seismological Research Letters (79) 855-866
The 29 July 2008 Mw 5.4 Chino Hills earthquake was the largest event to occur within the greater Los Angeles metropolitan region since the Mw 6.7 1994 Northridge earthquake. The earthquake was widely felt in a metropolitan region with a population of more than 10 million people and was recorded...
Two new species of Perlesta (Plecoptera: Perlidae) from eastern North America
B.C. Kondratieff, R.E. Zuellig, R.F. Kirchner, D. R. Lenat
2008, Proceedings of the Entomological Society of Washington (110) 668-673
Two new species of the Nearctic perlid genus Perlesta, P. durfeei Kondratieff, Zuellig, and Kirchner and P. georgiae Kondratieff, Zuellig, and Lenat are described and illustrated from Virginia and North Carolina, U.S.A., respectively....
Cutaneous and diphtheritic avian poxvirus infection in a nestling Southern Giant Petrel (Macronectes giganteus) from Antarctica
Valerie Shearn-Bochsler, David Earl Green, K. A. Converse, D. E. Docherty, T. Thiel, H.N. Geisz, William R. Fraser, Donna L. Patterson-Fraser
2008, Polar Biology (31) 569-573
The Southern giant petrel (Macronectes giganteus) is declining over much of its range and currently is listed as vulnerable to extinction by the International Union for the Conservation of Nature (IUCN). Island-specific breeding colonies near Palmer Station, Antarctica, have been monitored for over 30 years, and because this population continues to...
Habitat features affect bluehead sucker, flannelmouth sucker, and roundtail chub across a headwater tributary system in the Colorado River Basin
M.R. Bower, W.A. Hubert, F.J. Rahel
2008, Journal of Freshwater Ecology (23) 347-357
We assessed the distributions of three species of conservation concern, bluehead sucker (Catostomus discobolus), flannelmouth sucker (Catostomus latipinnis), and roundtail chub (Gila robusta), relative to habitat features across a headwater tributary system of the Colorado River basin in Wyoming. We studied the upper Muddy Creek watershed, Carbon County, portions of...
At-sea distribution of radio-marked Ashy Storm-Petrels Oceanodroma homochroa captured on the California Channel Islands
J. Adams, John Y. Takekawa
2008, Marine Ornithology: Journal of Seabird Research and Conservation (36) 9-17
Small, rare and wide-ranging pelagic birds are difficult to locate and observe at sea; little is therefore known regarding individual movements and habitat affinities among many of the world's storm-petrels (Family Hydrobatidae). We re-located 57 of 70 radio-marked Ashy Storm-Petrels Oceanodroma homochroa captured at three colonies in the California Channel...
Behavior and movement of adult chum salmon in the lower Cowlitz River, 2007: Final Report of Research
T.L. Liedtke, T.J. Kock, B.K. Ekstrom, D.W. Rondorf, J. Henning
2008, Report
n/a...
Estimates of fish-, spill-, and sluiceway-passage efficiencies of radio-tagged juvenile Chinook salmon during spring and summer at The Dalles Dam in 2003: Draft final report of research
H.C. Hansel, J.W. Beeman, B.J. Hausmann, S.D. Juhnke, P.V. Haner, J.L. Phelps
2008, Report
n/a...
Effects of summer flow augmentation on the migratory behavior and survival of juvenile Snake River fall Chinook salmon. Annual report 2006
K.F. Tiffan, W.P. Connor
2008, Report
n/a...
How temperature affects juvenile coho salmon
Mary Ann Madej
2008, Endangered Species Bulletin (33) 38-39
Water temperature influences many aspects of a salmon’s life cycle, including egg development, juvenile appetite and growth, migration, and distribution. Coho salmon (Oncorhynchus kisutch), like most salmonids, need cool water for rearing, and they typically reside in a stream for a minimum of one year after hatching. Historically, coho were...
Distribution of breeding Arizona Grasshopper Sparrow (Ammodramus savannarum ammolegus) in the southwestern United States: Past, present, and future
Janet M. Ruth
2008, Studies in Avian Biology (37) 113-124
The Arizona Grasshopper Sparrow (Ammodramus savannarum ammolegus) breeds in desert grasslands of southeastern Arizona and southwestern New Mexico in the US, and in adjacent parts of northern Sonora and Chihuahua, Mexico. Roads that were surveyed in 1982 and 1987 in Arizona and New Mexico were relocated and roadside survey protocols...
Ecology in the information age: Patterns of use and attrition rates of internet-based citations in ESA journals, 1997–2005
Jeffrey J. Duda, Richard J. Camp
2008, Frontiers in Ecology and the Environment (6) 145-151
As the amount of information available on the internet has increased, so too has the number of citations to network-accessible information in scholarly research. We searched all papers in four Ecological Society of America journals from 1997 to 2005 for articles containing a citation to material on the internet. We...
Ecological effects of large fires on US landscapes: benefit or catastrophe?
Robert E. Keane, James K. Agee, Peter Fule, Jon E. Keeley, Carl H. Key, Stanley G. Kitchen, Richard Miller, Lisa A. Schulte
2008, International Journal of Wildland Fire (17) 696-712
The perception is that today’s large fires are an ecological catastrophe because they burn vast areas with high intensities and severities. However, little is known of the ecological impacts of large fires on both historical and contemporary landscapes. The present paper presents a review of the current knowledge of the...
Naturalness and beyond: Protected area stewardship in an era of global environmental change
David N. Cole, Laurie Yung, Erika S. Zavaleta, Gregory H. Aplet, F. Stuart Chapin III, David M. Graber, Eric S. Higgs, Richard J. Hobbs, Peter B. Landres, Constance I. Millar, David J. Parsons, John M. Randall, Nathan L. Stephenson, Kathy A. Tonnessen, Peter S. White, Stephen Woodley
2008, George Wright Society Forum (25) 36-56
For most large U.S. parks and wilderness areas, enabling legislation and management policy call for preservation of these protected areas unimpaired in perpetuity. Central to the notions of protection, preservation, and unimpairment has been the concept of maintaining “naturalness,” a condition imagined by many to persist over time in the...
Modeling the effects of fire severity and spatial complexity on Small Mammals in Yosemite National Park, California
Susan L. Roberts, Jan W. Van Wagtendonk, A. Keith Miles, Douglas A. Kelt, James A. Lutz
2008, Fire Ecology (4) 83-104
We evaluated the impact of fire severity and related spatial and vegetative parameters on small mammal populations in 2 yr- to 15 yr-old burns in Yosemite National Park, California, USA. We also developed habitat models that would predict small mammal responses to fires of differing severity. We hypothesized that fire...
Breeding behavior and dispersal of radio-marked California clapper rails
Michael L. Casazza, Cory T. Overton, John Y. Takekawa, Tobias M. Rohmer, K. Navarre
2008, Western Birds (39) 101-106
No abstract available....
At-sea distribution of satellite-tracked grey-faced petrels, Pterodroma macroptera gouldi, captured on the Ruamaahua (Aldermen) Islands, New Zealand
Catriona MacLeod, Josh Adams, Phil Lyver
2008, Papers and Proceedings Royal Society of Tasmania (142) 73-88
We used satellite telemetry to determine the at-sea distribution of 32 adult (non-breeders and failed breeders) Grey-faced Petrels, Pterodroma macroptera gouldi, during July-October in 2006 and 2007. Adults captured at breeding colonies on the Ruamaahua (Aldermen) Islands ranged across the southwestern Pacific Ocean and Tasman Sea between 20-49°S and 142°E...
Seasonal passerine migratory movements over the arid Southwest
Rodney K. Felix, Robert H. Diehl, Janet M. Ruth
2008, Studies in Avian Biology (37) 126-137
Biannually, millions of Neotropical and Nearctic migratory birds traverse the arid southwestern US-Mexico borderlands, yet our knowledge of avian migration patterns and behaviors in this region is extremely limited. To describe the spatial and temporal patterns of migration, we examined echoes from weather surveillance radar sites across the American Southwest...
Comparison of blood aminotransferase methods for assessment of myopathy and hepatopathy in Florida manatees (Trichechus manatus latirostris)
K.E. Harr, K. Allison, R. K. Bonde, D. Murphy, J. W. Harvey
2008, Journal of Zoo and Wildlife Medicine (39) 180-187
Muscle injury is common in Florida manatees (Trichechus manatus latirostris). Plasma aspartate amino-transferase (AST) is frequently used to assess muscular damage in capture myopathy and traumatic injury. Therefore, accurate measurement of AST and alanine aminotransferase (ALT) is important in managed, free-ranging animals, as well as in those rehabilitating from injury....
Global change and biological soil crusts: Effects of ultraviolet augmentation under altered precipitation regimes and nitrogen additions
J. Belnap, S. L. Phillips, S. Flint, J. Money, M. Caldwell
2008, Global Change Biology (14) 670-686
Biological soil crusts (BSCs), a consortium of cyanobacteria, lichens, and mosses, are essential in most dryland ecosystems. As these organisms are relatively immobile and occur on the soil surface, they are exposed to high levels of ultraviolet (UV) radiation and atmospheric nitrogen (N) deposition, rising temperatures, and alterations in precipitation...
Earliest report of the genus Phyricodothyris George (Brachiopoda: Reticularioidea) in North America
J.L. Carter, A.D. Kollar, D. K. Brezinski
2008, Annals of Carnegie Museum (77) 253-257
Described from the Wymps Gap Member of the Mauch Chunk Formation of southwestern Pennsylvania and adjacent Maryland is a new species, Phyricodothyris lauriegrahamae, of the Upper Mississippian reticulariod brachiopod Phyricodothyris George, 1932. The Wymps Gap Limestone from which the type material was collected is middle Chesterian (late Visdan) in age....
Development and evaluation of geochemical methods for the sourcing of archaeological maize
L. V. Benson, Howard E. Taylor, K.A. Peterson, B.D. Shattuck, C.A. Ramotnik, J.R. Stein
2008, Journal of Archaeological Science (35) 912-921
Strontium (Sr)-isotope values on bone from deer mice pairs from 12 field sites in the Chaco Canyon area, New Mexico, were compared with isotope values of synthetic soil waters from the same fields. The data indicate that mice obtain Sr from near-surface sources and that soil samples collected at depths...
Land cover and forest formation distributions for St. Kitts, Nevis, St. Eustatius, Grenada and Barbados from decision tree classification of cloud-cleared satellite imagery
E.H. Helmer, T.A. Kennaway, D.H. Pedreros, M. L. Clark, H. Marcano-Vega, L.L. Tieszen, T.R. Ruzycki, S.R. Schill, C.M.S. Carrington
2008, Caribbean Journal of Science (44) 175-198
Satellite image-based mapping of tropical forests is vital to conservation planning. Standard methods for automated image classification, however, limit classification detail in complex tropical landscapes. In this study, we test an approach to Landsat image interpretation on four islands of the Lesser Antilles, including Grenada and St. Kitts, Nevis and...
Optimized Autonomous Space In-situ Sensor-Web for volcano monitoring
W.-Z. Song, B. Shirazi, S. Kedar, S. Chien, F. Webb, D. Tran, A. Davis, D. Pieri, R. LaHusen, J. Pallister, D. Dzurisin, S. Moran, M. Lisowski
2008, Conference Paper, IEEE Aerospace Conference Proceedings
In response to NASA's announced requirement for Earth hazard monitoring sensor-web technology, a multidisciplinary team involving sensor-network experts (Washington State University), space scientists (JPL), and Earth scientists (USGS Cascade Volcano Observatory (CVO)), is developing a prototype dynamic and scaleable hazard monitoring sensor-web and applying it to volcano monitoring. The combined...
