Monitoring direct and indirect climate effects on whitebark pine ecosystems at Crater Lake National park
S.B. Smith, D.C. Odion, D.A. Sarr, K.M. Irvine
2011, Park Science (28)
Whitebark pine (Pinus albicaulis) is the distinctive, often stunted, and picturesque tree line species in the American West. As a result of climate change, mountain pine beetles (Dendroctonus ponderosae) have moved up in elevation, adding to nonnative blister rust (Cronartium ribicola) disease as a major cause of mortality in whitebark...
Sexing young snowy owls
Mathew T. Seidensticker, Denver W. Holt, Jennifer Detienne, Sandra L. Talbot, Kathy Gray
2011, Journal of Raptor Research (45) 281-289
We predicted sex of 140 Snowy Owl (Bubo scandiacus) nestlings out of 34 nests at our Barrow, Alaska, study area to develop a technique for sexing these owls in the field. We primarily sexed young, flightless owls (3844 d old) by quantifying plumage markings on the remiges and tail, predicting...
Incorporating biodiversity into rangeland health: Plant species richness and diversity in great plains grasslands
Amy J. Symstad, Jayne L. Jonas
2011, Rangeland Ecology and Management (64) 555-572
Indicators of rangeland health generally do not include a measure of biodiversity. Increasing attention to maintaining biodiversity in rangelands suggests that this omission should be reconsidered, and plant species richness and diversity are two metrics that may be useful and appropriate. Ideally, their response to a variety of anthropogenic and...
Shortnose sturgeon use small coastal rivers: The importance of habitat connectivity
Gayle B. Zydlewski, M.T. Kinnison, P.E. Dionne, Joseph D. Zydlewski, Gail S. Wippelhauser
2011, Journal of Applied Ichthyology (27) 41-44
Contrary to conventional wisdom for shortnose sturgeon (Acipenser brevirostrum), we document shortnose sturgeon use of habitats beyond large rivers. Telemetry data from 2008 to 2010 in the Gulf of Maine demonstrates that adult shortnose sturgeon (up to 70%) frequently move between Maine’s two largest rivers, the Kennebec and Penobscot Rivers....
Mapping and monitoring Louisiana's mangroves in the aftermath of the 2010 Gulf of Mexico Oil spill
S. Giri, J. Long, L. Tieszen
2011, Journal of Coastal Research (27) 1059-1064
Information regarding the present condition, historical status, and dynamics of mangrove forests is needed to study the impacts of the Gulf of Mexico oil spill and other stressors affecting mangrove ecosystems. Such information is unavailable for Louisiana at sufficient spatial and thematic detail. We prepared mangrove forest distribution maps of...
Kin encounter rate and inbreeding avoidance in canids
E. Geffen, M. Kam, R. Hefner, P. Hersteinsson, A. Angerbjorn, L. Dalen, E. Fuglei, K. Noren, J.R. Adams, J. Vucetich, T.J. Meier, L.D. Mech, B.M. Vonholdt, D.R. Stahler, R.K. Wayne
2011, Molecular Ecology (20) 5348-5358
Mating with close kin can lead to inbreeding depression through the expression of recessive deleterious alleles and loss of heterozygosity. Mate selection may be affected by kin encounter rate, and inbreeding avoidance may not be uniform but associated with age and social system. Specifically, selection for kin recognition and inbreeding...
Nest-site fidelity and dispersal of Gyrfalcons estimated by noninvasive genetic sampling
Travis L. Booms, Sandra L. Talbot, George K. Sage, Brian J. McCaffery, Kevin G. McCracken, Philip F. Schempf
2011, Conference Paper, Condor
We used feathers from adult Gyrfalcons (Falco rusticolus) molted in breeding territories and blood samples from nestlings to document nest-site fidelity and dispersal of breeding adults and juveniles at three areas 100- 350 km apart in Yukon Delta National Wildlife Refuge, Alaska, 2003-2007. We used genotypes from seven polymorphic microsatellite...
USGS "Did You Feel It?" internet-based macroseismic intensity maps
D.J. Wald, V. Quitoriano, B. Worden, M. Hopper, J. W. Dewey
2011, Annals of Geophysics (54) 688-707
The U.S. Geological Survey (USGS) "Did You Feel It?" (DYFI) system is an automated approach for rapidly collecting macroseismic intensity data from Internet users' shaking and damage reports and generating intensity maps immediately following earthquakes; it has been operating for over a decade (1999-2011). DYFI-based intensity maps made rapidly available...
Evidence of shift in C4 species range in central Argentina during the late Holocene
L.C.R. Silva, M.A. Giorgis, M. Anand, L. Enrico, N. Perez-Harguindeguy, V. Falczuk, L.L. Tieszen, M. Cabido
2011, Plant and Soil (349) 261-279
AimMillennial-scale biogeographic changes are well understood in many parts of the world, but little is known about long-term vegetation dynamics in subtropical regions. Here we investigate shifts in C3/C4 plant abundance occurred in central Argentina during the past few millenniaMethodsWe determined present...
Forecasting carbon budget under climate change and CO 2 fertilization for subtropical region in China using integrated biosphere simulator (IBIS) model
Q. Zhu, H. Jiang, J. Liu, C. Peng, X. Fang, S. Yu, G. Zhou, X. Wei, W. Ju
2011, Polish Journal of Ecology (59) 3-24
The regional carbon budget of the climatic transition zone may be very sensitive to climate change and increasing atmospheric CO 2 concentrations. This study simulated the carbon cycles under these changes using process-based ecosystem models. The Integrated Biosphere Simulator (IBIS), a Dynamic Global Vegetation Model (DGVM), was used to evaluate...
Daily movements of female mallards wintering in Southwestern Louisiana
Paul T. Link, Alan D. Afton, Robert R. Cox Jr., Bruce E. Davis
2011, Waterbirds (34) 422-428
Understanding daily movements of waterfowl is crucial to management of winter habitats, especially along the Gulf Coast where hunting pressure is high. Radio-telemetry was used to investigate movements of female Mallards (Anas platyrchychos) wintering in southwestern Louisiana. Movement distances were analyzed from 2,455 paired locations (diurnal and nocturnal) of 126...
U.S. DOE methodology for the development of geologic storage potential for carbon dioxide at the national and regional scale
Angela Goodman, J. Alexandra Hakala, Grant Bromhal, Dawn Deel, Traci Rodosta, Scott Frailey, Michael Small, Doug Allen, Vyacheslav Romanov, Jim Fazio, Nicolas Huerta, Dustin McIntyre, Barbara Kutchko, George Guthrie
2011, International Journal of Greenhouse Gas Control (5) 952-965
A detailed description of the United States Department of Energy (US-DOE) methodology for estimating CO2 storage potential for oil and gas reservoirs, saline formations, and unmineable coal seams is provided. The oil and gas reservoirs are assessed at the field level, while saline formations and unmineable coal seams are assessed...
Unique geologic insights from "non-unique" gravity and magnetic interpretation
R. W. Saltus, R.J. Blakely
2011, GSA Today (21) 4-11
Interpretation of gravity and magnetic anomalies is mathematically non-unique because multiple theoretical solutions are always possible. The rigorous mathematical label of "nonuniqueness" can lead to the erroneous impression that no single interpretation is better in a geologic sense than any other. The purpose of this article is to present a...
Reassessment of stable continental regions of Southeast Asia
R. L. Wheeler
2011, Seismological Research Letters (82) 971-983
Probabilistic seismic-hazard assessments of the central and eastern United States (CEUS) require estimates of the size of the largest possible earthquake (Mmax). In most of the CEUS, sparse historical seismicity does not provide a record of moderate and large earthquakes that is sufficient to constrain Mmax. One remedy for the...
Associations between dioxins/furans and dioxin-like PCBs in estuarine sediment and blue crab
J. Liebens, C.J. Mohrherr, Natalie K. Karouna-Renier, R.A. Snyder, K.R. Rao
2011, Water, Air, & Soil Pollution (222) 403-419
The objective of the present study was to evaluate the relationships between the quantity, toxicity, and compositional profile of dioxin/furan compounds (PCDD/Fs) and dioxin-like polychlorinated biphenyls (DL-PCBs) in estuarine sediment and in the blue crab (Callinectes sapidus). Sediment and blue crab samples were collected in three small urban...
The black carp in North America: an update
Leo G. Nico, Howard L. Jelks
2011, Conference Paper, Invasive asian carps in North America: American Fisheries Symposium 74
No abstract available....
Fe-Ni metal and sulfide minerals in CM chondrites: An indicator for thermal history
M. Kimura, Jeffrey N. Grossman, M.K. Weisberg
2011, Meteoritics and Planetary Science (46) 431-442
CM chondrites were subjected to aqueous alteration and, in some cases, to secondary metamorphic heating. The effects of these processes vary widely, and have mainly been documented in silicate phases. Herein, we report the characteristic features of Fe‐Ni metal and sulfide phases in 13 CM and 2 CM‐related chondrites to...
Cooling rates and the depth of detachment faulting at oceanic core complexes: Evidence from zircon Pb/U and (U-Th)/He ages
Craig B. Grimes, Michael J. Cheadle, Barbara E. John, P.W. Reiners, J. L. Wooden
2011, Geochemistry, Geophysics, Geosystems (12)
Oceanic detachment faulting represents a distinct mode of seafloor spreading at slow spreading mid‐ocean ridges, but many questions persist about the thermal evolution and depth of faulting. We present new Pb/U and (U‐Th)/He zircon ages and combine them with magnetic anomaly ages to define the cooling histories of gabbroic crust...
Surface complexation modeling for predicting solid phase arsenic concentrations in the sediments of the Mississippi River Valley alluvial aquifer, Arkansas, USA
M.S.U. Sharif, R.K. Davis, K.F. Steele, B. Kim, P.D. Hays, T.M. Kresse, J.A. Fazio
2011, Applied Geochemistry (26) 496-504
The potential health impact of As in drinking water supply systems in the Mississippi River Valley alluvial aquifer in the state of Arkansas, USA is significant. In this context it is important to understand the occurrence, distribution and mobilization of As in the Mississippi River Valley alluvial aquifer. Application of...
Efficacy and toxicity of iodine disinfection of Atlantic salmon eggs
M.A. Chalupnicki, H. G. Ketola, C. E. Starliper, D. Gallagher
2011, North American Journal of Aquaculture (73) 124-128
Recent interest in the restoration of Atlantic salmon Salmo salar in the Great Lakes has given rise to new culture techniques and management programs designed to reduce pathogen transmission while stabilizing and enhancing wild populations. We examined the toxicity of iodine to Atlantic salmon eggs and its effectiveness as a...
Potential effects of alpha-recoil on uranium-series dating of calcrete
L.A. Neymark
2011, Chemical Geology (282) 98-112
Evaluation of paleosol ages in the vicinity of Yucca Mountain, Nevada, at the time the site of a proposed high-level nuclear waste repository, is important for fault-displacement hazard assessment. Uranium-series isotope data were obtained for surface and subsurface calcrete samples from trenches and boreholes in Midway Valley, Nevada, adjacent to...
Using Lagrangian sampling to study water quality during downstream transport in the San Luis Drain, California, USA
E.C. Volkmar, R.A. Dahlgren, W.T. Stringfellow, S.S. Henson, S.E. Borglin, C. Kendall, E. E. Van Nieuwenhuyse
2011, Chemical Geology (283) 68-77
To investigate the mechanism for diel (24h) changes commonly observed at fixed sampling locations and how these diel changes relate to downstream transport in hypereutrophic surface waters, we studied a parcel of agricultural drainage water as it traveled for 84h in a concrete-lined channel having no additional water inputs or...
Microbial community structure of hydrothermal deposits from geochemically different vent fields along the Mid-Atlantic Ridge
Gilberto E. Flores, James H. Campbell, Julie D. Kirshtein, Jennifer Meneghin, Mircea Podar, Joshua I. Steinberg, Jeffrey S. Seewald, Margaret Kingston Tivey, Mary A. Voytek, Zamin K. Yang, Anna-Louise Reysenbach
2011, Environmental Microbiology (13) 2158-2171
To evaluate the effects of local fluid geochemistry on microbial communities associated with active hydrothermal vent deposits, we examined the archaeal and bacterial communities of 12 samples collected from two very different vent fields: the basalt-hosted Lucky Strike (37°17'N, 32°16.3'W, depth 1600-1750m) and the ultramafic-hosted Rainbow (36°13'N, 33°54.1'W, depth 2270-2330m)...
Reduction of garbage in the diet of nonbreeding glaucous gulls corresponding to a change in waste management
Emily L. Weiser, Abby N. Powell
2011, Arctic (64) 220-226
Glaucous gulls (Larus hyperboreus) are major predators in the Arctic and may benefit from human development. We studied use of garbage by glaucous gulls in Barrow, Alaska, in 2007, when municipal waste was disposed of in a landfill, and in 2008, when it was incinerated. In both years, diet samples...
A perspective on nonstationarity and water management
R.M. Hirsch
2011, Journal of the American Water Resources Association (47) 436-446
This essay offers some perspectives on climate-related nonstationarity and water resources. Hydrologists must not lose sight of the many sources of nonstationarity, recognizing that many of them may be of much greater magnitude than those that may arise from climate change. It is paradoxical that statistical and deterministic approaches give...
