Secondary sulfate minerals associated with acid drainage in the eastern US: Recycling of metals and acidity in surficial environments
J. M. Hammarstrom, R.R. Seal II, A. L. Meier, J.M. Kornfeld
2005, Chemical Geology (215) 407-431
Weathering of metal-sulfide minerals produces suites of variably soluble efflorescent sulfate salts at a number of localities in the eastern United States. The salts, which are present on mine wastes, tailings piles, and outcrops, include minerals that incorporate heavy metals in solid solution, primarily the highly soluble members of the...
Strange bedfellows - A deep-water hermatypic coral reef superimposed on a drowned barrier island; Southern Pulley Ridge, SW Florida platform margin
B. D. Jarrett, A. C. Hine, R. B. Halley, D. F. Naar, S. D. Locker, A.C. Neumann, D. Twichell, C. Hu, B.T. Donahue, W.C. Jaap, D. Palandro, K. Ciembronowicz
2005, Marine Geology (214) 295-307
The southeastern component of a subtle ridge feature extending over 200 km along the western ramped margin of the south Florida platform, known as Pulley Ridge, is composed largely of a non-reefal, coastal marine deposit. Modern biostromal reef growth caps southern Pulley Ridge (SPR), making it the deepest hermatypic reef...
Home range and space use patterns of flathead catfish during the summer-fall period in two Missouri streams
Jason C. Vokoun, Charles F. Rabeni
2005, Transactions of the American Fisheries Society (134) 509-517
Flathead catfish Pylodictis olivaris were radio-tracked in the Grand River and Cuivre River, Missouri, from late July until they moved to overwintering habitats in late October. Fish moved within a definable area, and although occasional long-distance movements occurred, the fish typically returned to the previously occupied area. Seasonal...
A space‐for‐time substitution reveals the long‐term decline in genotypic diversity of a widespread salt marsh plant, Spartina alterniflora, over a span of 1500 years
S.E. Travis, M.W. Hester
2005, Journal of Ecology (93) 417-430
Clonal populations face a trade‐off between sexual recruitment and vegetative growth and, once established, may undergo continuous declines in genotypic diversity if their sexual recruits make poor competitors. The geological history of delta formation in the Lower Mississippi River Valley was used to age eight S. alterniflora marshes for use in a...
Use of prepositioned grid electrofishers for the collection of robust redhorse broodstock
T.B. Grabowski, J. Jeffery Isely
2005, North American Journal of Aquaculture (67) 89-92
We investigated the potential of prepositioned grid electrofishers as a means of collecting broodstock for the rare robust redhorse Moxostoma robustum. We found that combined with visual observation, this technique allowed for the efficient capture of fish in breeding condition. We were able to harvest eggs in the field and...
Paleoproterozoic high-sulfidation mineralization in the Tapajós gold province, Amazonian Craton, Brazil: geology, mineralogy, alunite argon age, and stable-isotope constraints
Caetano Juliani, Robert O. Rye, Carmen Nunes, Lawrence W. Snee, Rafael H. Correa, Lena V.S. Monteiro, Jorge S. Bettencourt, Rainer Neumann, Arnaldo A. Neto
2005, Chemical Geology (215) 95-125
The Brazilian Tapajós gold province contains the first evidence of high-sulfidation gold mineralization in the Amazonian Craton. The mineralization appears to be in large nested calderas. The Tapajós–Parima (or Ventuari–Tapajós) geological province consists of a metamorphic, igneous, and sedimentary sequence formed during a 2.10 to 1.87 Ga ocean−continent orogeny. The...
Aqueous stability of gadolinium in surface waters receiving sewage treatment plant effluent Boulder Creek, Colorado
P. L. Verplanck, Howard E. Taylor, D. Kirk Nordstrom, L. B. Barber
2005, Environmental Science & Technology (39) 6923-6929
In many surface waters, sewage treatment plant (STP) effluent is a substantial source of both regulated and unregulated contaminants, including a suite of complex organic compounds derived from household chemicals, pharmaceutical, and industrial and medical byproducts. In addition, STP effluents in some urban areas have also been shown to have...
Forest cover influences dispersal distance of white-tailed deer
E.S. Long, Duane R. Diefenbach, C.S. Rosenberry, B.D. Wallingford, M.D. Grund
2005, Journal of Mammalogy (86) 623-629
Animal dispersal patterns influence gene flow, disease spread, population dynamics, spread of invasive species, and establishment of rare or endangered species. Although differences in dispersal distances among taxa have been reported, few studies have described plasticity of dispersal distance among populations of a single species. In 2002-2003, we radiomarked 308...
An annotated list of the caddisflies (Trichoptera) of Mount Rainier National Park, Washington, USA
D.E. Ruiter, B.C. Kondratieff, R.A. Lechleitner, R.E. Zuellig
2005, Transactions of the American Entomological Society (131) 159-187
The caddisflies of Mount Rainier National Park (MRNP), Washington, USA, were surveyed between 1997 and 2004. At least 1,930 specimens from over 250 collections at 163 sites were examined. Based on the current understanding of caddisfly systematics, 108 species were identified. With nine additional species previously reported that we did...
Fish assemblage structure following Impoundment of a Great Plains river
M.C. Quist, W.A. Hubert, F.J. Rahel
2005, Western North American Naturalist (65) 53-63
Understanding the upstream and downstream effect of impoundments on stream fish assemblages is important in managing fish populations and predicting the effects of future human activities on stream ecosystems. We used information collected over a 41-year period (1960-2001) to assess changes in fish assemblage structure resulting from impoundment of the...
Woody debris along an upland chronosequence in boreal Manitoba and its impact on long-term carbon storage
K.L. Manies, J.W. Harden, B. P. Bond-Lamberty, K. P. O’Neill
2005, Canadian Journal of Forest Research (35) 472-482
This study investigated the role of fire-killed woody debris as a source of soil carbon in black spruce (Picea mariana (Mill.) BSP) stands in Manitoba, Canada. We measured the amount of standing dead and downed woody debris along an upland chronosequence, including wood partially and completely covered by moss growth....
Seismic signature of a phreatic explosion: Hydrofracturing damage at Karthala volcano, Grande Comore Island, Indian Ocean
C. Savin, J.-R. Grasso, P. Bachelery
2005, Bulletin of Volcanology (67) 717-731
Karthala volcano is a basaltic shield volcano with an active hydrothermal system that forms the southern two-thirds of the Grande Comore Island, off the east coat of Africa, northwest of Madagascar. Since the start of volcano monitoring by the local volcano observatory in 1988, the July 11th, 1991 phreatic eruption...
Peatlands and green frogs: A relationship regulated by acidity?
M. J. Mazerolle
2005, Écoscience (12) 60-67
The effects of site acidification on amphibian populations have been thoroughly addressed in the last decades. However, amphibians in naturally acidic environments, such as peatlands facing pressure from the peat mining industry, have received little attention. Through two field studies and an experiment, I assessed the use of bog habitats...
Gold enrichment and the Bi-Au association in pyrrhotite-rich massive sulfide deposits, Escanaba trough, Southern Gorda Ridge
T.O. Tormanen, R.A. Koski
2005, Economic Geology (100) 1135-1150
High gold contents (to 10.1 ppm, avg 1.4 ppm, n = 34) occur in pyrrhotite-rich massive sulfide samples from the sediment-covered floor of the Escanaba trough, the slow-spreading, southernmost segment of Gorda Ridge. These concentrations reflect the presence of primary gold, formed during high-temperature hydrothermal activity in mounds and chimneys,...
A tropical freshwater wetlands: I. Structure, growth, and regeneration
James P. Allen, Ken W. Krauss, Katherine C. Ewel, Bobby D. Keeland, E. E. Waguk
2005, Wetlands Ecology and Management (13) 657-669
Forested wetlands dominated by Terminalia carolinensis are endemic to Micronesia but common only on the island of Kosrae, Federated States of Micronesia. On Kosrae, these forests occur on Nansepsep, Inkosr, and Sonahnpil soil types, which differ in degree of flooding and soil saturation. We compared forest structure, growth, nutrition, and regeneration on...
Diseases of frogs and toads
D. E. Green, K. A. Converse
S.K. Majumdar, J.E. Huffman, F.J. Brenner, A.I. Panah, editor(s)
2005, Book chapter, Wildlife Diseases: Landscape Epidemiology, Spatial Distribution, and Utilization of Remote Sensing Technology.
This chapter presents information on infectious diseases of free-living frogs and toads that have completed metamorphosis. The diseases discussed in this chapter pertain principally to sub-adult and adult frogs and toads that are at least 60-90 days removed from completion of metamorphosis. The main emphasis of this chapter is the...
A simple and effective radiometric correction method to improve landscape change detection across sensors and across time
X. Chen, Lee Vierling, D. Deering
2005, Remote Sensing of Environment (98) 63-79
Satellite data offer unrivaled utility in monitoring and quantifying large scale land cover change over time. Radiometric consistency among collocated multi-temporal imagery is difficult to maintain, however, due to variations in sensor characteristics, atmospheric conditions, solar angle, and sensor view angle that can obscure surface change detection. To detect accurate...
The inverse problem of refraction travel times, part I: Types of Geophysical Nonuniqueness through Minimization
J. Ivanov, R. D. Miller, J. Xia, D. Steeples, C.B. Park
2005, Pure and Applied Geophysics (162) 447-459
In a set of two papers we study the inverse problem of refraction travel times. The purpose of this work is to use the study as a basis for development of more sophisticated methods for finding more reliable solutions to the inverse problem of refraction travel times, which is known...
Hydrogen and oxygen isotope constraints on hydrothermal alteration of the Trinity peridotite, Klamath Mountains, California
V. Liakhovitch, James E. Quick, R. T. Gregory
2005, International Geology Review (47) 203-214
The Trinity peridotite represents a rare opportunity to examine a relatively fertile plagioclase peridotite that was exhumed and later subjected to intrusive events in a seafloor environment, followed by its emplacement and incorporation into a continent. Over 250 stable isotopic determinations on whole rocks and minerals elucidate the hydrothermal evolution...
Two-stage sequential sampling: A neighborhood-free adaptive sampling procedure
M. Salehi, D. R. Smith
2005, Journal of Agricultural, Biological, and Environmental Statistics (10) 84-103
Designing an efficient sampling scheme for a rare and clustered population is a challenging area of research. Adaptive cluster sampling, which has been shown to be viable for such a population, is based on sampling a neighborhood of units around a unit that meets a specified condition. However, the edge...
Assessment of rarity of the blackmouth shiner Notropis melanostomus (Cyprinidae) based on museum and recent survey data
M. T. O’Connell, Uzee O’Connell, J.D. Williams
2005, Southeastern Naturalist (4) 247-260
Accurate knowledge of an organism's distribution is necessary for conserving species with small or isolated populations. A perceived rarity may only reflect inadequate sampling effort and suggest the need for more research. We used a recently developed method to evaluate the distribution of a rare fish species, the blackmouth shiner...
2004 inventory of the distribution and abundance of non-indigenous plants and rare plants at two riverine national parks in the Great Lakes Network -- final report
J. Larson, D.L. Larson
2005, Report
Fire history of the San Francisco East Bay region and implications for landscape patterns
Jon E. Keeley
2005, International Journal of Wildland Fire (14) 285-296
The San Francisco East Bay landscape is a rich mosaic of grasslands, shrublands and woodlands that is experiencing losses of grassland due to colonization by shrubs and succession towards woodland associations. The instability of these grasslands is apparently due to their disturbance-dependent nature coupled with 20th century changes in fire...
Eradication of invasive Tamarix ramosissima along a desert stream increases native fish density
T.A. Kennedy, J. C. Finlay, S.E. Hobbie
2005, Ecological Applications (15) 2072-2083
Spring ecosystems of the western United States have high conservation value, particularly because of the highly endemic, and often endangered, fauna that they support. Refuges now protect these habitats from many of the human impacts that once threatened them, but invasive species often persist. Invasive saltcedar is ubiquitous along streams,...
Host diversity begets parasite diversity: Bird final hosts and trematodes in snail intermediate hosts
Ryan F. Hechinger, Kevin D. Lafferty
2005, Proceedings of the Royal Society B: Biological Sciences (272) 1059-1066
An unappreciated facet of biodiversity is that rich communities and high abundance may foster parasitism. For parasites that sequentially use different host species throughout complex life cycles, parasite diversity and abundance in ‘downstream’ hosts should logically increase with the diversity and abundance of ‘upstream’ hosts (which carry the preceding stages...
