Challenges of predicting the potential distribution of a slow-spreading invader: a habitat suitability map for an invasive riparian tree
Catherine S. Jarnevich, Lindsay V. Reynolds
2011, Biological Invasions (13) 153-163
Understanding the potential spread of invasive species is essential for land managers to prevent their establishment and restore impacted habitat. Habitat suitability modeling provides a tool for researchers and managers to understand the potential extent of invasive species spread. Our goal was to use habitat suitability modeling to map potential...
Geologic map of the Caetano caldera, Lander and Eureka counties, Nevada
Joseph P. Colgan, Christopher D. Henry, David A. John
2011, Nevada Bureau of Mines and Geology Map 174
The Eocene (34 Ma) Caetano caldera in north-central Nevada offers an exceptional opportunity to study the physical and petrogenetic evolution of a large (20 km by 10–18 km pre-extensional dimensions) silicic magma chamber, from precursor magmatism to caldera collapse and intrusion of resurgent plutons. Caldera-related rocks shown on this map...
Seismic swarm associated with the 2008 eruption of Kasatochi Volcano, Alaska: earthquake locations and source parameters
Natalia G. Ruppert, Stephanie G. Prejean, Roger A. Hansen
2011, Journal of Geophysical Research (116)
An energetic seismic swarm accompanied an eruption of Kasatochi Volcano in the central Aleutian volcanic arc in August of 2008. In retrospect, the first earthquakes in the swarm were detected about 1 month prior to the eruption onset. Activity in the swarm quickly intensified less than 48 h prior to...
Python sebae (Northern African Python or African Rock Python)
R.N. Reed, D. Giardina, T. Pernas, D. Hazelton, J.G. Dozier, J. Prieto, R.W. Snow, K.L. Krysko
2011, Herpetological Review (42)
No abstract available....
Status and Natural History of Emballonura Semicaudata Rotensis on Aguiguan, Mariana Islands
Gary J. Wiles, Thomas J. O'Shea, David J. Worthington, Jacob A. Esselstyn, Ernest W. Valdez
2011, Acta Chiropterologica (13) 299-309
Pacific sheath-tailed bats (Emballonura semicaudata rotensis) in the Mariana Islands declined greatly in abundance and distribution during the 20th century. The small island of Aguiguan now supports the only persisting population. We studied abundance and natural history of this population from 1995–2008. There was a likely population increase during the...
I3N risk assessment and pathway analysis: Tools for the prevention of biological invasions
Annie Simpson, Elizabeth A. Sellers
2011, Conference Paper, Plant invasions: Policies, politics, and practices; Proceedings of the 5th Biennial Weeds Across Borders Conference
Information on invasive alien species from published and unpublished accounts and databases is usually scattered in locations and formats that are not easily accessible. Customized informatics tools for collecting and organizing invasive species information can help resource managers better control biological invasions. The Invasives Information Network (I3N) of the Inter-American...
Geophysical setting of the February 21, 2008 Mw 6 Wells earthquake, Nevada, and implications for earthquake hazards
David A. Ponce, Janet T. Watt, C. Bouligand
2011, Nevada Bureau of Mines and Geology Special Publication 36
We utilize gravity and magnetic methods to investigate the regional geophysical setting of the Wells earthquake. In particular, we delineate major crustal structures that may have played a role in the location of the earthquake and discuss the geometry of a nearby sedimentary basin that may have contributed to observed...
Tracking the autumn migration of the bar-headed goose (Anser indicus) with satellite telemetry and relationship to environmental conditions
Yaonan Zhang, Meiyu Hao, John Y. Takekawa, Fumin Lei, Baoping Yan, Diann J. Prosser, David C. Douglas, Zhi Xing, Scott H. Newman
2011, International Journal of Zoology (2011)
The autumn migration routes of bar-headed geese captured before the 2008 breeding season at Qinghai Lake, China, were documented using satellite tracking data. To assess how the migration strategies of bar-headed geese are influenced by environmental conditions, the relationship between migratory routes, temperatures, and vegetation coverage at stopovers sites estimated...
Comparison of simulations of land-use specific water demand and irrigation water supply by MF-FMP and IWFM
Wolfgang Schmid, Emin Dogural, Randall T. Hanson, Tariq Kadir, Francis Chung
2011, Technical Information Record TIR-2
Two hydrologic models, MODFLOW with the Farm Process (MF-FMP) and the Integrated Water Flow Model (IWFM), are compared with respect to each model’s capabilities of simulating land-use hydrologic processes, surface-water routing, and groundwater flow. Of major concern among the land-use processes was the consumption of water through evaporation and transpiration...
The regional structural setting of the 2008 Wells earthquake and Town Creek Flat Basin: implications for the Wells earthquake fault and adjacent structures
Christopher S. Henry, Joseph P. Colgan
2011, Nevada Bureau of Mines and Geology Special Publication 36
The 2008 Wells earthquake occurred on a northeast-striking, southeast-dipping fault that is clearly delineated by the aftershock swarm to a depth of 10-12 km below sea level. However, Cenozoic rocks and structures around Wells primarily record east-west extension along north- to north-northeast-striking, west-dipping normal faults that formed during the middle...
Time constraints in temperate-breeding species: Influence of growing season length on reproductive strategies
K. E. B. Gurney, Russell G. Clark, Stuart Slattery, N. V. Smith-Downey, Jordan I. Walker, L. M. Armstrong, S. E. Stephens, Michael J. Petrula, R. M. Corcoran, K. Martin, K. A. Degroot, Rodney W. Brook, Alan D. Afton, K. Cutting, J. M. Warren, M. Fournier, David N. Koons
2011, Ecography (34) 628-636
Organisms that reproduce in temperate regions have limited time to produce offspring successfully, and this constraint is expected to be more pronounced in areas with short growing seasons. Information concerning how reproductive ecology of endotherms might be influenced by growing season length (GSL) is rare, and species that breed over...
Recent and historic drivers of landscape change in the Everglades ridge, slough, and Tree Island mosaic
Laurel G. Larsen, Nicholas Aumen, Christopher E. Bernhardt, Vic Engel, Thomas J. Givnish, P McCormick S Hagerthey, Judson Harvey, Lynn Leonard, P. McCormick, Christopher McVoy, Gregory E. Noe, Martha K. Nungesser, K. Rutchey, Fred Sklar, Tiffany G. Troxler, John C. Volin, Debra A. Willard
2011, Critical Reviews in Environmental Science and Technology (41) 344-381
More than half of the original Everglades extent formed a patterned peat mosaic of elevated ridges, lower and more open sloughs, and tree islands aligned parallel to the dominant flow direction. This ecologically important landscape structure remained in a dynamic equilibrium for millennia prior to rapid degradation over the past...
Phase and amplitude inversion of crosswell radar data
Karl J. Ellefsen, Aldo T. Mazzella, Robert Horton, Jason R. McKenna
2011, Geophysics (76)
Phase and amplitude inversion of crosswell radar data estimates the logarithm of complex slowness for a 2.5D heterogeneous model. The inversion is formulated in the frequency domain using the vector Helmholtz equation. The objective function is minimized using a back-propagation method that is suitable for a 2.5D model and that...
Carbon and nitrogen biogeochemistry of a Prairie Pothole Wetland, Stutsman County, North Dakota, USA
JoAnn M. Holloway, Martin B. Goldhaber, Christopher T. Mills
2011, Applied Geochemistry (26, supplement) S44-S47
The concentration and form of dissolved organic C (DOC) and N species (NH4+ and NO3-) were investigated as part of a larger hydrogeochemical study of the Cottonwood Lake Study Area within the Prairie Potholes region. Groundwater, pore water and surface wetland water data were used to help characterize the relationships...
Larval fish dynamics in spring pools in middle Tennessee
Phillip William Bettoli, C.A. Goldsworthy
2011, Southeastern Naturalist (10) 145-154
We used lighted larval traps to assess reproduction by fishes inhabiting nine spring pools in the Barrens Plateau region of middle Tennessee between May and September 2004. The traps (n = 162 deployments) captured the larval or juvenile forms of Etheostoma crossopterum (Fringed Darter) (n = 188), Gambusia affinis (Western...
Trophic relations of introduced flathead catfish in an atlantic river
Jessica R. Baumann, Thomas J. Kwak
2011, Transactions of the American Fisheries Society (140) 1120-1134
The flathead catfish Pylodictis olivaris is a large piscivore that is native to the Mississippi and Rio Grande river drainages but that has been widely introduced across the United States. River ecologists and fisheries managers are concerned about introduced flathead catfish populations because of the negative impacts on native fish...
Migration And wintering areas Of Glaucous-winged Gulls From south-central Alaska
Scott A. Hatch, V.A. Gill, Daniel M. Mulcahy
2011, The Condor (113) 340-351
We used satellite telemetry to investigate the migration patterns and wintering areas of Glaucous-winged Gulls (Larus glaucescens) from Middleton Island, Alaska, where this species' population increased tenfold from the 1970s to the 1990s. Fall migration spanned 11 weeks, including numerous stopovers en route, apparently for feeding. Spring migration from wintering...
Effects of climate change on nutrition and genetics of White-tailed Ptarmigan
Sara J. Oyler-McCance, Craig A. Stricker, Judy St. John, Clait E. Braun, Gregory T. Wann, Cameron L. Aldridge
Brett K. Sandercock, Kathy Martin, Gernot Segelbacher, editor(s)
2011, Book chapter, Ecology, conservation, and management of grouse (Studies in Avian Biology no. 39)
White-tailed Ptarmigan (Lagopus leucura) are well suited as a focal species for the study of climate change because they are adapted to cool, alpine environments that are expected to undergo unusually rapid climate change. We compared samples collected in the late 1930s, the late 1960s, and the late 2000s...
Scientific ocean drilling and gas hydrates studies
Carolyn D. Ruppel
2011, Book chapter, Scientific ocean drilling: Accomplishments and challenges
No abstract available....
Effects of eradication and restoration treatments on Italian thistle (Carduus pycnocephalus)
Thomas McGinnis, Jon Keeley
2011, Madroño (58) 207-213
Low elevation grasslands in California long have been dominated by Mediterranean grasses, but many areas still have large native forb populations. Alien forbs invade these grasslands, displacing both native and other alien species. Italian thistle is a noxious alien herb that has recently invaded these grasslands, including ungrazed blue oak...
Fine scale movements and habitat use of black brant during the flightless Wing Molt in Arctic Alaska
Tyler L. Lewis, Paul L. Flint, Dirk V. Derksen, Joel A. Schmutz
2011, Waterbirds (34) 177-185
Thousands of Black Brant (Branta bernicla nigricans) migrate annually to the Teshekpuk Lake Special Area (TLSA), Alaska, to undergo the flightless wing molt on tundra lakes and wetlands. GPS transmitters were attached to Brant over two summers (2007–2008) to examine patterns of movement and habitat use of molting Brant, including...
Marine West Coast forests
Steven S. Perakis, Linda H. Geiser, Erik A. Lilleskov
Linda H. Pardo, Molly J. Robin-Abbott, Charles T. Driscoll, editor(s)
2011, General Technical Report NRS-80-9
No abstract available....
Assessing first-order emulator inference for physical parameters in nonlinear mechanistic models
Mevin Hooten, William B. Leeds, Jerome Fiechter, Christopher K. Wikle
2011, Journal of Agricultural, Biological, and Environmental Statistics (16) 475-494
We present an approach for estimating physical parameters in nonlinear models that relies on an approximation to the mechanistic model itself for computational efficiency. The proposed methodology is validated and applied in two different modeling scenarios: (a) Simulation and (b) lower trophic level ocean ecosystem model. The approach we develop...
Burmese Pythons and other giant constrictors
Robert N. Reed, Gordon H. Rodda
2011, Book chapter, Encyclopedia of Biological Invasions
No abstract available....
An assessment of stressor extent and biological condition in the North American mid-continent great rivers (USA)
Ted R. Angradi, David W. Bolgriend, Terri M. Jicha, Mark S. Pearson, Debra L. Taylor, Mary F. Moffett, Karen A. Blocksom, David M. Walters, Colleen M. Elonen, Leroy E. Anderson, James M. Lazorchak, Euan D. Reavie, Amy R. Kireta, Brian H. Hill
2011, River Systems (19) 48-68
We assessed the North American mid-continent great rivers (Upper Mississippi, Missouri, and Ohio). We estimated the extent of each river in most- (MDC) or least-disturbed condition (LDC) based on multiple biological response indicators: fish and macroinvertebrate, trophic state based on chlorophyll a, macrophyte cover, and exposure of fish-eating wildlife to...
