Accounting for false-positive acoustic detections of bats using occupancy models
Matthew J. Clement, Thomas J. Rodhouse, Patricia C. Ormsbee, Joseph M. Szewczak, James D. Nichols
2014, Journal of Applied Ecology (51) 1460-1467
1. Acoustic surveys have become a common survey method for bats and other vocal taxa. Previous work shows that bat echolocation may be misidentified, but common analytic methods, such as occupancy models, assume that misidentifications do not occur. Unless rare, such misidentifications could lead to incorrect inferences with significant management...
Lesser Scaup
Michael J. Anteau, Jean-Michel DeVink, David N. Koons, Jane E. Austin, Christine M. Custer, Alan D. Afton
2014, Book chapter, The birds of North America online
No abstract available....
Biscayne aquifer drinking water (USGS45): a new isotopic reference material for δ2H and δ18O measurements of water
Jennifer M. Lorenz, Lauren V. Tarbox, Bryan Buck, Haiping Qi, Tyler B. Coplen
2014, Rapid Communications in Mass Spectrometry (28) 2031-2034
RATIONALE As a result of the scarcity of isotopic reference waters for daily use, a new secondary isotopic reference material for international distribution has been prepared from drinking water collected from the Biscayne aquifer in Ft. Lauderdale, Florida. METHODS This isotopic reference water was filtered, homogenized, loaded into glass ampoules, sealed with a...
Climatic and density influences on recruitment in an irruptive population of Roosevelt elk
Heath D. Starns, Mark A. Ricca, Adam Duarte, Floyd W. Weckerly
2014, Journal of Mammalogy (95) 925-932
Current paradigms of ungulate population ecology recognize that density-dependent and independent mechanisms are not always mutually exclusive. Long-term data sets are necessary to assess the relative strength of each mechanism, especially when populations display irruptive dynamics. Using an 18-year time series of population abundances of Roosevelt elk (Cervus elaphus roosevelti) inhabiting...
Variable population exposure and distributed travel speeds in least-cost tsunami evacuation modelling
Stuart A. Fraser, Nathan J. Wood, David A. Johnston, Graham S. Leonard, Paul D. Greening, Tiziana Rossetto
2014, Natural Hazards and Earth System Sciences (14) 2975-2991
Evacuation of the population from a tsunami hazard zone is vital to reduce life-loss due to inundation. Geospatial least-cost distance modelling provides one approach to assessing tsunami evacuation potential. Previous models have generally used two static exposure scenarios and fixed travel speeds to represent population movement. Some analyses have assumed...
Adaptive restoration of river terrace vegetation through iterative experiments
Michelle P. Dela Cruz, Vanessa B. Beauchamp, Patrick B. Shafroth, Cheryl E. Decker, Aviva O’Neil
2014, Natural Areas Journal (34) 475-487
Restoration projects can involve a high degree of uncertainty and risk, which can ultimately result in failure. An adaptive restoration approach can reduce uncertainty through controlled, replicated experiments designed to test specific hypotheses and alternative management approaches. Key components of adaptive restoration include willingness of project managers to accept the...
Vegetation dynamics after spring and summer fires in red and white pine stands at Voyageurs National Park
Scott A. Weyenberg, Noel B. Pavlovic
2014, Natural Areas Journal (34) 443-458
Conducting dormant season or springtime prescribed fire treatments has become a common practice in many regions of the United States to restore ecosystems to their natural state. Despite the knowledge that historically, fires often occurred during the summer, the application of summer burns has been deterred, in part, by a...
Subsurface geometry of the San Andreas-Calaveras fault junction: Influence of serpentinite and the Coast Range Ophiolite
Janet Tilden Watt, David A. Ponce, Russell W. Graymer, Robert C. Jachens, Robert W. Simpson
2014, Tectonics (33) 2025-2044
While an enormous amount of research has been focused on trying to understand the geologic history and neotectonics of the San Andreas-Calaveras fault (SAF-CF) junction, fundamental questions concerning fault geometry and mechanisms for slip transfer through the junction remain. We use potential-field, geologic, geodetic, and seismicity data to investigate the...
The destructive 1946 Unimak near-field tsunami: New evidence for a submarine slide source from reprocessed marine geophysical data
Roland E. von Huene, Stephen Kirby, John J. Miller, Peter Dartnell
2014, Geophysical Research Letters (41) 6811-6818
The Mw 8.6 earthquake in 1946 off the Pacific shore of Unimak Island at the end of the Alaska Peninsula generated a far-field tsunami that crossed the Pacific to Antarctica. Its tsunami magnitude, 9.3, is comparable to the 9.1 magnitude of the 2011 Tohoku tsunami. On Unimak Island's Pacific shore,...
Spring migration of waterfowl in the Northern Hemisphere: a management and conservation perspective
Joshua D. Stafford, Adam K. Janke, Michael J. Anteau, Aaron T. Pearse, Anthony D. Fox, Johan Elmberg, Jacob N. Straub, Michael W. Eichholz, Celine Arzel
2014, Wildfowl (2014) 70-85
Spring migration is a key part of the annual cycle for waterfowl populations in the northern hemisphere, due to its temporal proximity to the breeding season and because resources may be limited at one or more staging sites. Research based on field observations during spring lags behind other periods of the year, despite...
Migratory patterns of hatchery and stream-reared Atlantic salmon Salmo salar smolts in the Connecticut River, U.S.A.
Stephen D. McCormick, Alexander Haro, Darren T. Lerner, Michael F. O’Dea, Amy M. Regish
2014, Journal of Fish Biology (85) 1005-1022
The timing of downstream migration and detection rates of hatchery-reared Atlantic salmon Salmo salar smolts and stream-reared smolts (stocked 2 years earlier as fry) were examined in the Connecticut River (U.S.A.) using passive integrated transponder (PIT) tags implanted into fish and then detected at a downstream fish bypass collection facility at Turners...
Depth gradients in food-web processes linking habitats in large lakes: Lake Superior as an exemplar ecosystem
Michael E. Sierszen, Thomas R. Hrabik, Jason D. Stockwell, Anne M Cotter, Joel C. Hoffman, Daniel L. Yule
2014, Freshwater Biology (59) 2122-2136
In large lakes around the world, depth-based changes in the abundance and distribution of invertebrate and fish species suggest that there may be concomitant changes in patterns of resource allocation. Using Lake Superior of the Laurentian Great Lakes as an example, we explored this idea through stable isotope analyses of...
Population-level effects of egg predation on a native planktivore in a large freshwater lake
David B. Bunnell, Justin G. Mychek-Londer, Charles P. Madenjian
2014, Ecology of Freshwater Fish (23) 604-614
Using a 37-year recruitment time series, we uncovered a field pattern revealing a strong, inverse relationship between bloater Coregonus hoyi recruitment success and slimy sculpin Cottus cognatus biomass in Lake Michigan (United States), one of the largest freshwater lakes of the world. Given that slimy sculpins (and deepwater sculpin Myoxocephalus...
Probabilistic estimation of dune retreat on the Gold Coast, Australia
Margaret L. Palmsten, Kristen D. Splinter, Nathaniel G. Plant, Hilary F. Stockdon
2014, Shore & Beach (82) 35-43
Sand dunes are an important natural buffer between storm impacts and development backing the beach on the Gold Coast of Queensland, Australia. The ability to forecast dune erosion at a prediction horizon of days to a week would allow efficient and timely response to dune erosion in this highly populated...
Smolting in coastal cutthroat trout Onchorhynchus clarkii clarkii
Joseph D. Zydlewski, G. Zydlewski, B. Kennedy, W. Gale
2014, Journal of Fish Biology (85) 1111-1130
Gill Na+, K+-ATPase activity, condition factor and seawater (SW) challenges were used to assess the development of smolt characteristics in a cohort of hatchery coastal cutthroat trout Oncorhynchus clarkii clarkii from the Cowlitz River in Washington State, U.S.A. Gill Na+, K+-ATPase activity increased slightly in the spring, coinciding with an...
A computer program for uncertainty analysis integrating regression and Bayesian methods
Dan Lu, Ming Ye, Mary C. Hill, Eileen P. Poeter, Gary Curtis
2014, Environmental Modelling and Software (60) 45-56
This work develops a new functionality in UCODE_2014 to evaluate Bayesian credible intervals using the Markov Chain Monte Carlo (MCMC) method. The MCMC capability in UCODE_2014 is based on the FORTRAN version of the differential evolution adaptive Metropolis (DREAM) algorithm of Vrugt et al. (2009), which estimates the posterior probability density...
Survival of Atlantic salmon Salmo salar smolts through a hydropower complex
D.S. Stich, M.M. Bailey, Joseph D. Zydlewski
2014, Journal of Fish Biology (85) 1074-1096
This study evaluated Atlantic salmon Salmo salar smolt survival through the lower Penobscot River, Maine, U.S.A., and characterized relative differences in proportional use and survival through the main-stem of the river and an alternative migration route, the Stillwater Branch. The work was conducted prior to removal of two main-stem dams...
Mineral resource of the month: Vermiculite
Arnold O. Tanner
2014, Earth (October 2014)
Vermiculite comprises a group of hydrated, laminar magnesium-aluminum-iron silicate minerals resembling mica. They are secondary minerals, typically altered biotite, iron-rich phlogopite or other micas or clay-like minerals that are themselves sometimes alteration products of amphibole, chlorite, olivine and pyroxene. Vermiculite deposits are associated with volcanic ultramafic rocks rich in magnesium...
Transdisciplinary application of the cross-scale resilience model
Shana M. Sundstrom, David G. Angeler, Ahjond S. Garmestani, Jorge H. Garcia, Craig R. Allen
2014, Sustainability (6) 6925-6948
The cross-scale resilience model was developed in ecology to explain the emergence of resilience from the distribution of ecological functions within and across scales, and as a tool to assess resilience. We propose that the model and the underlying discontinuity hypothesis are relevant to other complex adaptive systems, and can...
The role of reserves and anthropogenic elements for functional connectivity and resilience of ephemeral habitats
Daniel R. Uden, Michelle L. Hellman, David G. Angeler, Craig R. Allen
2014, Ecological Applications (24) 1569-1582
Ecological reserves provide important wildlife habitat in many landscapes, and the functional connectivity of reserves and other suitable habitat patches is crucial for the persistence and resilience of spatially structured populations. To maintain or increase connectivity at spatial scales larger than individual patches, conservation actions may focus on creating and...
Where the waters meet: sharing ideas and experiences between inland and marine realms to promote sustainable fisheries management
Steven J. Cooke, Robert Arlinghaus, Devin M. Bartley, T. Douglas Beard Jr., Ian G. Cowx, Timothy E. Essington, Olaf P. Jensen, Abigail J. Lynch, William W. Taylor, Reg Watson
2014, Canadian Journal of Fisheries and Aquatic Sciences (71) 1593-1601
Although inland and marine environments, their fisheries, fishery managers, and the realm-specific management approaches are often different, there are a surprising number of similarities that frequently go unrecognized. We contend that there is much to be gained by greater cross-fertilization and exchange of ideas and strategies between realms and the...
Spatial patterns of lacustrine fish assemblages in a catchment of the Mississippi Alluvial Valley
Caroline S. Andrews, Leandro E. Miranda, Daniel B. Goetz, Robert Kroger
2014, Aquatic Conservation: Marine and Freshwater Ecosystems (24) 634-644
In the alluvial valley of the lower Mississippi River, floodplain lakes form isolated aquatic fragments that retain differing degrees of connectivity to neighbouring rivers. Within these floodplain lakes it was hypothesized that fish species composition, relative abundance, and biodiversity metrics would be shaped largely by aquatic connectivity...
Spatial structuring within a reservoir fish population: implications for management
David R. Stewart, James M. Long, Daniel E. Shoup
2014, Marine and Freshwater Research (66) 202-212
Spatial structuring in reservoir fish populations can exist because of environmental gradients, species-specific behaviour, or even localised fishing effort. The present study investigated whether white crappie exhibited evidence of improved population structure where the northern more productive half of a lake is closed to fishing to provide waterfowl hunting opportunities....
Mississippi River nitrate loads from high frequency sensor measurements and regression-based load estimation
Brian A. Pellerin, Brian A. Bergamaschi, Robert J. Gilliom, Charles G. Crawford, John Franco Saraceno, C. Paul Frederick, Bryan D. Downing, Jennifer C. Murphy
2014, Environmental Science & Technology (48) 12612-12619
Accurately quantifying nitrate (NO3–) loading from the Mississippi River is important for predicting summer hypoxia in the Gulf of Mexico and targeting nutrient reduction within the basin. Loads have historically been modeled with regression-based techniques, but recent advances with high frequency NO3– sensors allowed us to evaluate model performance relative to...
Palila restoration research, 1996−2012
Paul C. Banko, Chris Farmer, Carter T. Atkinson, Kevin W. Brinck, Richad Camp, Colleen Cole, Raymond Canner, Steve Dougill, Daniel Goltz, Elizabeth Gray, Steven C. Hess, Jennifer Higashino, Susan I. Jarvi, Luanne Johnson, Leona Laniawe, Megan Laut, Linda Miller, Christopher J. Murray, Daniel Nelson, David L. Leonard, Peter Oboyshi, Leanne Patch-Highfill, David D. Pollock, Kalei Rapozo, Marla Schwarzfeld, John Slotterback, Robert M. Stephens
Paul C. Banko, Chris Farmer, editor(s)
2014, Technical Report HCSU-046
The Palila Restoration Project was initiated in 1996 by the U.S. Geological Survey to assist government agencies mitigate the effects of realigning Saddle Road (Highway 200) through Palila Critical Habitat (U.S. Fish and Wildlife Service 1998, Federal Highway Administration 1999). Ecological research on the palila (Loxioides bailleui), an endangered Hawaiian...
