Effects of scoria-cone eruptions upon nearby human communities
M.H. Ort, M.D. Elson, K.C. Anderson, W. A. Duffield, J.A. Hooten, D.E. Champion, G. Waring
2008, Geological Society of America Bulletin (120) 476-486
Scoria-cone eruptions are typically low in volume and explosivity compared with eruptions from stratovolcanoes, but they can affect local populations profoundly. Scoria-cone eruption effects vary dramatically due to eruption style, tephra blanket extent, climate, types of land use, the culture and complexity of the affected group, and resulting governmental action....
Historical and current environmental influences on an endemic great plains fish
John R. Fischer, C.P. Paukert
2008, American Midland Naturalist (159) 364-377
Native fishes of the Great Plains are at risk of decline due to disturbances to physical habitat caused by changes in land and water use, as well as shifts in species assemblages driven by the invasion of introduced species with the loss of natives. We used historical and current fish...
Sandwave migration in Monterey Submarine Canyon, Central California
J. P. Xu, F. L. Wong, R. Kvitek, D.P. Smith, C. K. Paull
2008, Marine Geology (248) 193-212
Repeated high-resolution multibeam bathymetric surveys from 2002 through 2006 at the head of the Monterey Submarine Canyon reveal a sandwave field along the canyon axis between 20 and 250??m water depth. These sandwaves range in wavelength from 20 to 70??m and 1 to 3??m in height. A quantitative measure was...
Landscape genetics and the spatial distribution of chronic wasting disease
Julie A. Blanchong, M.D. Samuel, K.T. Scribner, B.V. Weckworth, J.A. Langenberg, K.B. Filcek
2008, Biology Letters (4) 130-133
Predicting the spread of wildlife disease is critical for identifying populations at risk, targeting surveillance and designing proactive management programmes. We used a landscape genetics approach to identify landscape features that influenced gene flow and the distribution of chronic wasting disease (CWD) in Wisconsin white-tailed deer. CWD prevalence was negatively...
A two-part measure of degree of invasion for cross-community comparisons
Q. Guo, A. Symstad
2008, Conservation Biology (22) 666-672
Invasibility is a critical feature of ecological communities, especially for management decisions. To date, invasibility has been measured in numerous ways. Although most researchers have used the richness (or number) of exotic species as a direct or indirect measure of community invasibility, others have used alternative measures such as the...
New Orleans and Hurricane Katrina. IV: Orleans East Bank (Metro) protected basin
R.B. Seed, R.G. Bea, A. Athanasopoulos-Zekkos, G.P. Boutwell, J.D. Bray, C. Cheung, D. Cobos-Roa, J. Cohen-Waeber, B.D. Collins, L.F. Harder Jr., R. E. Kayen, J.M. Pestana, M.F. Riemer, J.D. Rogers, R. Storesund, X. Vera-Grunauer, Joseph Wartman
2008, Journal of Geotechnical and Geoenvironmental Engineering (134) 762-779
This paper addresses damage caused by Hurricane Katrina to the main Orleans East Bank protected basin. This basin represented the heart of New Orleans, and contained the main downtown area, the historic French Quarter, the Garden District, and the sprawling Lakefront and Canal Districts. Nearly half of the loss of...
Silurian gastropoda from southeastern and west-central Alaska
D.M. Rohr, R. B. Blodgett, J. Fryda
2008, Journal of Paleontology (82) 604-611
Additional Silurian (Ludlovian) gastropods are described from the Heceta Formation in the Alexander terrane on Prince of Wales Island, southeastern Alaska. Species include Spinicharybdis krizi n. sp., Spinicharybdis boucoti n. sp., Morania wagneri n. sp., Haplospira craigi n. sp., Australonema sp., Pachystrophia cf. gotlandica (Lindstro??m, 1884), and Medfrazyga gilmulli n....
Age and growth of the knobbed whelk Busycon carica (Gmelin 1791) in South Carolina subtidal waters
A.G. Eversole, W.D. Anderson, J. Jeffery Isely
2008, Journal of Shellfish Research (27) 423-426
Knobbed whelk, Busycon carica (Gmelin, 1791), age and growth were estimated using tagged and recaptured individuals (n = 396) from areas off South Carolina coastal islands. Recaptured whelks were at large an average of 298 d (4-2,640 d). Growth, an increase in shell length (SL), was evident in 24% of...
Hepatic heat shock protein 70 and plasma cortisol levels in rainbow trout after tagging with a passive integrated transponder
J.W. Feldhaus, S.A. Heppell, M.G. Mesa, H. Li
2008, Transactions of the American Fisheries Society (137) 690-695
This study examined the potentially stressful effects of tagging juvenile rainbow trout Oncorhynchus mykiss with passive integrated transponder (PIT) tags by measuring short-term (<120-h) changes in plasma concentrations of cortisol and hepatic heat shock protein 70 (hsp70). In a laboratory experiment, plasma cortisol levels were measured in fish before they...
Predicting the locations of naturally fishless lakes
Emily Gaenzle Schilling, C.S. Loftin, K.E. Degoosh, Alexander D. Huryn, K.E. Webster
2008, Freshwater Biology (53) 1021-1035
1. Fish have been introduced into many previously fishless lakes throughout North America over the past 100+ years. It is difficult to determine the historical distribution of fishless lakes, however, because these introductions have not always been well-documented. 2. Due to its glacial history and low human population density, the...
Oxygen isotope geochemistry of the lassen volcanic center, California: Resolving crustal and mantle contributions to continental Arc magmatism
T.C. Feeley, M.A. Clynne, G.S. Winer, W.C. Grice
2008, Journal of Petrology (49) 971-997
This study reports oxygen isotope ratios determined by laser fluorination of mineral separates (mainly plagioclase) from basaltic andesitic to rhyolitic composition volcanic rocks erupted from the Lassen Volcanic Center (LVC), northern California. Plagioclase separates from nearly all rocks have δ18O values (6·1–8·4‰) higher than expected for production of the magmas...
Rayleigh-wave dispersive energy imaging using a high-resolution linear radon transform
Y. Luo, J. Xia, R. D. Miller, Y. Xu, J. Liu, Q. Liu
2008, Pure and Applied Geophysics (165) 903-922
Multichannel Analysis of Surface Waves (MASW) analysis is an efficient tool to obtain the vertical shear-wave profile. One of the key steps in the MASW method is to generate an image of dispersive energy in the frequency-velocity domain, so dispersion curves can be determined by picking peaks of dispersion energy....
Habitat use and movement patterns by adult saugers from fall to summer in an unimpounded small-river system
K.M. Kuhn, W.A. Hubert, Kevin Johnson, D. Oberlie, D. Dufek
2008, North American Journal of Fisheries Management (28) 360-367
The Little Wind River drainage in Wyoming is a relatively small unimpounded river system inhabited by native saugers Sander canadensis. Radio telemetry was used to assess habitat use and movement patterns by adult saugers in the river system from fall through early summer. Fifty-four adult saugers were captured during fall...
The role of hydrologic regimes on dissolved organic carbon composition in an agricultural watershed
P.J. Hernes, R.G.M. Spencer, R.Y. Dyda, B.A. Pellerin, P.A.M. Bachand, B.A. Bergamaschi
2008, Geochimica et Cosmochimica Acta (72) 5266-5277
Willow Slough, a seasonally irrigated agricultural watershed in the Sacramento River valley, California, was sampled weekly in 2006 in order to investigate seasonal concentrations and compositions of dissolved organic carbon (DOC). Average DOC concentrations nearly doubled from winter baseflow (2.75 mg L-1) to summer irrigation (5.14 mg L-1), while a...
Net trophic transfer efficiencies of polychlorinated biphenyl congeners to lake whitefish (Coregonus clupeaformis) from their food
C.P. Madenjian, D.V. O’Connor, R.R. Rediske, J. P. O’Keefe, S.A. Pothoven
2008, Environmental Toxicology and Chemistry (27) 631-636
Lake whitefish (Coregonus clupeaformis) were fed rainbow smelt (Osmerus mordax) in four laboratory tanks over a 133-d experiment. At the start of the experiment, 10 to 14 of the fish in each tank were sacrificed, and the concentrations of 40 polychlorinated biphenyl (PCB) congeners within these fish were determined. Polychlorinated...
Volcanic risk perception of young people in the urban areas of Vesuvius: Comparisons with other volcanic areas and implications for emergency management
S. Carlino, R. Somma, G.C. Mayberry
2008, Journal of Volcanology and Geothermal Research (172) 229-243
More than 600 000 people are exposed to volcanic risk in the urban areas near the volcano, Vesuvius, and may need to be evacuated if there is renewed volcanic activity. The success of a future evacuation will strongly depend on the level of risk perception and preparedness of the at-risk...
Early marine growth of pink salmon in Prince William Sound and the coastal gulf of Alaska during years of low and high survival
A.D. Cross, D.A. Beauchamp, K.W. Myers, J.H. Moss
2008, Transactions of the American Fisheries Society (137) 927-939
Although early marine growth has repeatedly been correlated with overall survival in Pacific salmon Oncorhynchus spp., we currently lack a mechanistic understanding of smolt-to-adult survival. Smolt-to-adult survival of pink salmon O. gorbuscha returning to Prince William Sound was lower than average for juveniles that entered marine waters in 2001 and...
Stratigraphy and structural setting of Upper Cretaceous Frontier Formation, western Centennial Mountains, southwestern Montana and southeastern Idaho
T. S. Dyman, R. G. Tysdal, W. J. Perry Jr., D. J. Nichols, J. D. Obradovich
2008, Cretaceous Research (29) 237-248
Stratigraphic, sedimentologic, and palynologic data were used to correlate the Frontier Formation of the western Centennial Mountains with time-equivalent rocks in the Lima Peaks area and other nearby areas in southwestern Montana. The stratigraphic interval studied is in the middle and upper parts (but not uppermost) of the formation based...
Effects of seawater acclimation on mRNA levels of corticosteroid receptor genes in osmoregulatory and immune systems in trout
T. Yada, S. Hyodo, C.B. Schreck
2008, General and Comparative Endocrinology (156) 622-627
Influence of environmental salinity on expression of distinct corticosteroid receptor (CR) genes, glucocorticoid receptor (GR)-1 and -2, and mineralcorticoid receptor (MR), was examined in osmoregulatory and hemopoietic organs and leucocytes of steelhead trout (Oncorhynchus mykiss). There was no significant difference in plasma cortisol levels between freshwater (FW)- or seawater (SW)-acclimated...
Summer temperature variation and implications for juvenile Atlantic salmon
M. E. Mather, D.L. Parrish, C.A. Campbell, J.R. McMenemy, Joseph M. Smith
2008, Hydrobiologia (603) 183-196
Temperature is important to fish in determining their geographic distribution. For cool- and cold-water fish, thermal regimes are especially critical at the southern end of a species' range. Although temperature is an easy variable to measure, biological interpretation is difficult. Thus, how to determine what temperatures are meaningful to fish...
Avoidance behavior of juvenile lake sturgeon (Acipenser fulvescens) exposed to Bayluscide 3.2% Granular Sea Lamprey Larvicide
Michael A Boogaard, Jane E Rivera, Mark P Gaikowski
2008, Report
Avoidance of juvenile lake sturgeons < 100 mm in length in response to application of the Bayluscide 3.2% Granular Sea Lamprey Larvicide was assessed. Clear plexiglas columns (107 cm in height, 30.5 cm in diameter) to evaluate the potential for the normally bottom-dwelling fishes to move vertically in the water...
Mathematical models frame environmental dispute [Review of the article Useless arithmetic: Ten points to ponder when using mathematical models in environmental decision making]
Berton Lee Lamb, Nina Burkardt
2008, Public Administration Review (68) 55-60
When Linda Pilkey- Jarvis and Orrin Pilkey state in their article, "Useless Arithmetic," that "mathematical models are simplified, generalized representations of a process or system," they probably do not mean to imply that these models are simple. Rather, the models are simpler than nature and that is the heart of...
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...
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....
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...
