Nonlesions, misdiagnoses, missed diagnoses, and other interpretive challenges in fish histopathology studies: a guide for investigators, authors, reviewers, and readers
Jeffrey C. Wolf, Wes A. Baumgartner, Vicki Blazer, Alvin C. Camus, Jeffrey A. Engelhardt, John W. Fournie, Salvatore Frasca Jr., David B. Groman, Michael L. Kent, Lester H. Khoo, Jerry M. Law, Eric D. Lombardini, Christine Ruehl-Fehlert, Helmut E. Segner, Stephen A. Smith, Jan M. Spitsbergen, Klaus Weber, Marilyn J. Wolfe
2015, Toxicologic Pathology (43) 297-325
Differentiating salient histopathologic changes from normal anatomic features or tissue artifacts can be decidedly challenging, especially for the novice fish pathologist. As a consequence, findings of questionable accuracy may be reported inadvertently, and the potential negative impacts of publishing inaccurate histopathologic interpretations are not always fully appreciated. The objectives of...
The economic viability of smallholder timber production under expanding açaí palm production in the Amazon Estuary
Lucas B. Fortini, Douglas R. Carter
2015, Journal of Forest Economics (20) 223-235
Relatively little attention has been paid to the economic potentials and limitations of tropical timber production and management at smallholder scales, with the most relevant research focusing on community forestry efforts. As a rare tropical example of long-lasting small-scale timber production, in this study we explore the economics of smallholder...
Non-native fishes in Florida freshwaters: a literature review and synthesis
Pamela J. Schofield, William F. Loftus
2015, Reviews in Fish Biology and Fisheries (25) 117-145
Non-native fishes have been known from freshwater ecosystems of Florida since the 1950s, and dozens of species have established self-sustaining populations. Nonetheless, no synthesis of data collected on those species in Florida has been published until now. We searched the literature for peer-reviewed publications reporting original data for 42 species...
Introduced northern pike consumption of salmonids in Southcentral Alaska
Adam Sepulveda, David S. Rutz, Aaron W Dupuis, Patrick A Shields, Kristine J. Dunker
2015, Ecology of Freshwater Fish (24) 519-531
The impacts of introduced northern pike (Esox lucius) on salmonid populations have attracted much attention because salmonids are popular subsistence, sport and commercial fish. Concern over the predatory effects of introduced pike on salmonids is especially high in Southcentral Alaska, where pike were illegally introduced to the Susitna River basin...
Models of invasion and establishment of African Mustard (Brassica tournefortii)
Kristin H. Berry, Timothy A. Gowan, David M. Miller, Matthew L. Brooks
2015, Invasive Plant Science and Management (7) 599-616
Introduced exotic plants can drive ecosystem change. We studied invasion and establishment ofBrassica tournefortii (African mustard), a noxious weed, in the Chemehuevi Valley, western Sonoran Desert, California. We used long-term data sets of photographs, transects for biomass of annual plants, and densities of African mustard collected at irregular intervals between 1979...
Trend analyses with river sediment rating curves
Jonathan A. Warrick
2015, Hydrological Processes (29) 936-949
Sediment rating curves, which are fitted relationships between river discharge (Q) and suspended-sediment concentration (C), are commonly used to assess patterns and trends in river water quality. In many of these studies it is assumed that rating curves have a power-law form (i.e., C = aQb, where a and b...
Real-time inversions for finite fault slip models and rupture geometry based on high-rate GPS data
Sarah E. Minson, Jessica R. Murray, John O. Langbein, Joan S. Gomberg
2015, Journal of Geophysical Research (119) 3201-3231
We present an inversion strategy capable of using real-time high-rate GPS data to simultaneously solve for a distributed slip model and fault geometry in real time as a rupture unfolds. We employ Bayesian inference to find the optimal fault geometry and the distribution of possible slip models for that geometry...
Projected risk of population declines for native fish species in the Upper Mississippi River
S.M. Crimmins, P. Boma, W.E. Thogmartin
2015, River Research and Applications (31) 135-142
Conservationists are in need of objective metrics for prioritizing the management of habitats. For individual species, the threat of extinction is often used to prioritize what species are in need of conservation action. Using long-term monitoring data, we applied a Bayesian diffusion approximation to estimate quasi-extinction risk for 54 native...
Assessing stand water use in four coastal wetland forests using sapflow techniques: annual estimates, errors and associated uncertainties
Ken W. Krauss, Jamie A. Duberstein, William H. Conner
2015, Hydrological Processes (29) 112-127
Forests comprise approximately 37% of the terrestrial land surface and influence global water cycling. However, very little attention has been directed towards understanding environmental impacts on stand water use (S) or in identifying rates of S from specific forested wetlands. Here, we use sapflow techniques to address two separate but linked objectives:...
The 2011 Mineral, Virginia, earthquake and its significance for seismic hazards in eastern North America: overview and synthesis
J. Wright Horton Jr., Martin C. Chapman, Russell A. Green
2015, Special Paper of the Geological Society of America (509) 1-25
The 23 August 2011 Mw (moment magnitude) 5.7 ± 0.1, Mineral, Virginia, earthquake was the largest and most damaging in the central and eastern United States since the 1886 Mw 6.8–7.0, Charleston, South Carolina, earthquake. Seismic data indicate that the earthquake rupture occurred on a southeast-dipping reverse fault and consisted of three...
Quantifying climate change mitigation potential in Great Plains wetlands for three greenhouse gas emission scenarios
Kristin B. Byrd, Jamie L. Ratliff, Anne Wein, Norman B. Bliss, Benjamin M. Sleeter, Terry L. Sohl, Zhengpeng Li
2015, Mitigation and Adaptation Strategies for Global Change (20) 439-465
We examined opportunities for avoided loss of wetland carbon stocks in the Great Plains of the United States in the context of future agricultural expansion through analysis of land-use land-cover (LULC) change scenarios, baseline carbon datasets and biogeochemical model outputs. A wetland map that classifies wetlands according to carbon pools...
The precarious persistence of the endangered Sierra Madre yellow-legged frog Rana muscosa in southern California, USA
Adam R. Backlin, Cynthia J. Hitchcock, Elizabeth A. Gallegos, Julie L. Yee, Robert N. Fisher
2015, Oryx (49) 157-164
We conducted surveys for the Endangered Sierra Madre yellow-legged frog Rana muscosa throughout southern California to evaluate the current distribution and status of the species. Surveys were conducted during 2000–2009 at 150 unique streams and lakes within the San Gabriel, San Bernardino, San Jacinto, and Palomar mountains of southern California....
A spaceborne inventory of volcanic activity in Antarctica and southern oceans, 2000-10
Matthew R. Patrick, John L. Smellie
2015, Antarctic Science (25) 475-500
Of the more than twenty historically active volcanoes in Antarctica and the sub-Antarctic region only two, to our knowledge, host any ground-based monitoring instruments. Moreover, because of their remoteness, most of the volcanoes are seldom visited, thus relegating the monitoring of volcanism in this region almost entirely to satellites. In...
The use of wavenumber normalization in computing spatially averaged coherencies (KRSPAC) of microtremor data from asymmetric arrays
M.W. Asten, William J. Stephenson, Stephen H. Hartzell
2015, Conference Paper
The SPAC method of processing microtremor noise observations for estimation of Vs profiles has a limitation that the array has circular or triangular symmetry in order to allow spatial (azimuthal) averaging of inter-station coherencies over a constant station separation. Common processing methods allow for station separations to vary by typically...
Geohydrologic and water-quality characterization of a fractured-bedrock test hole in an area of Marcellus shale gas development, Tioga County, Pennsylvania
John H. Williams, Dennis W. Risser, Clifford H. Dodge
2015, Open-File Report 15-24.0
An integrated analysis of core, geophysical logs, gas isotopes, and specific-depth water-quality samples from the Cherry Flats test hole was used to characterize the stratigraphy, water-bearing zones, and groundwater quality at a site in southern Tioga County, Pennsylvania. The study was completed as a cooperative effort between the Pennsylvania Department...
Sequence stratigraphic framework of upper pliocene to holocene sediments of the Los Angeles Basin, California: Implications for aquifer architecture
Kenneth D. Ehman, Brian D. Edwards, Daniel J. Ponti
2015, Book
Executive Summary Groundwater provides more than one-third of the municipal water supply for the coastal Los Angeles Basin and defining the aquifer architecture is a high priority for ground-water managers. Sequence stratigraphy, the state-of-the-art method for delineating reservoir geometry and continuity in the petroleum industry, is now being incorporated into ground water...
Deep-Water Acoustic Anomalies from Methane Hydrate in the Bering Sea
Warren T. Wood, Ginger A. Barth, David W. Scholl, Nina Lebedeva-Ivanova
2015, Report, NRL Review
A recent expedition to the central Bering Sea, one of the most remote locations in the world, has yielded observations confirming gas and gas hydrates in this deep ocean basin. Significant sound speed anomalies found using inversion of pre-stack seismic data are observed in association with variable seismic amplitude anomalies in...
East versus West: organic contaminant differences in brown pelican (Pelecanus occidentalis) eggs from South Carolina, USA and the Gulf of California, Mexico
Stacy S. Vander Pol, Daniel W. Anderson, Patrick G.R. Jodice, Joyce E. Stuckey
2015, Science of the Total Environment (438) 527-532
Brown pelicans (Pelecanus occidentalis) were listed as endangered in the United States in 1970, largely due to reproductive failure and mortality caused by organochlorine contaminants, such as DDT. The southeast population, P.o. carolinensis, was delisted in 1985, while the west coast population, P.o. californicus, was not delisted until 2009. As fish-eating coastal...
An interpolation method for stream habitat assessments
Kenneth R. Sheehan, Stuart A. Welsh
2015, North American Journal of Fisheries Management (29) 1-9
Interpolation of stream habitat can be very useful for habitat assessment. Using a small number of habitat samples to predict the habitat of larger areas can reduce time and labor costs as long as it provides accurate estimates of habitat. The spatial correlation of stream habitat variables such as substrate...
The role of floodplain restoration in mitigating flood risk, Lower Missouri River, USA
Robert B. Jacobson, Garth A. Lindner, Chance Bitner
Paul F. Hudson, Hans Middelkoop, editor(s)
2015, Book chapter, Geomorphic approaches to integrated floodplain management of lowland fluvial systems in North America and Europe
Recent extreme floods on the Lower Missouri River have reinvigorated public policy debate about the potential role of floodplain restoration in decreasing costs of floods and possibly increasing other ecosystem service benefits. The first step to addressing the benefits of floodplain restoration is to understand the interactions of flow, floodplain...
Hindcast of water availability in regional aquifer systems using MODFLOW Farm Process
Wolfgang Schmid, Randall T. Hanson, Claudia C. Faunt, Steven P. Phillips
2015, Conference Paper, Predictions for hydrology, ecology, and water resources management: Using data and models to benefit society
Coupled groundwater and surface-water components of the hydrologic cycle can be simulated by the Farm Process for MODFLOW (MF-FMP) in both irrigated and non-irrigated areas and aquifer-storage and recovery systems. MF-FMP is being applied to three productive agricultural regions of different scale in the State of California, USA, to assess...
National Field Manual for the Collection of Water-Quality Data. U.S. Geological Survey Techniques of Water-Resources Investigations, Book 9
2015, Techniques of Water-Resources Investigations 09
The mission of the Water Resources Discipline of the U.S. Geological Survey (USGS) is to provide the information and understanding needed for wise management of the Nation's water resources. Inherent in this mission is the responsibility to collect data that accurately describe the physical, chemical, and biological attributes of water...
General classification handbook for floodplain vegetation in large river systems
Jennifer J. Dieck, Janis Ruhser, Erin E. Hoy, Larry R. Robinson
2015, Techniques and Methods 2-A1
This handbook describes the General Wetland Vegetation Classification System developed as part of the U.S. Army Corps of Engineers’ Upper Mississippi River Restoration (UMRR) Program, Long Term Resource Monitoring (LTRM) element. The UMRR is a cooperative effort between the U.S. Army Corps of Engineers, U.S. Geological Survey, U.S. Fish and...
Uncertainty and risk evaluation during the exploration stage of geothermal development
Jeffrey B. Witter, Whitney J. Trainor-Guitton, Drew L. Siler
2014, Conference Paper, Proceedings, Forty-Fourth Workshop on Geothermal Reservoir Engineering
Quantifying and representing uncertainty for geothermal systems is often ignored, in practice, during the exploration phase of a geothermal development project. We propose that this occurs potentially because the task seems so formidable. The primary goal of this paper is to initiate a dialogue within the geothermal community about: which...
Geology and geophysics applied to groundwater hydrology at Fort Irwin, California
David C. Buesch, editor(s)
2014, Open-File Report 2013-1024
Geologic and geophysical investigations in the vicinity of Fort Irwin National Training Center, California, have been completed in support of groundwater investigations, and are presented in eight chapters of this report. A generalized surficial geologic map along with field and borehole investigations conducted during 2010–11 provide a lithostratigraphic and structural...
