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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
Body morphology differs in wild juvenile Chinook salmon Oncorhynchus tshawytscha in the Willamette River, Oregon, USA
E.J. Billman, L.D. Whitman, R.K. Schroeder, C.S. Sharpe, David L. G. Noakes, Carl B. Schreck
2014, Journal of Fish Biology (85) 1097-1110
Body morphology of juvenile Chinook salmon Oncorhynchus tshawytscha in the upper Willamette River, Oregon, U.S.A., was analysed to determine if variation in body shape is correlated with migratory life-history tactics followed by juveniles. Body shape was compared between migrating juveniles that expressed different life-history tactics, i.e. autumn migrants and yearling smolts, and among...
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...
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...
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...
Assessing the risk persistent drought using climate model simulations and paleoclimate data
Toby R. Ault, Julia E. Cole, Jonathan T. Overpeck, Gregory T. Pederson, David M. Meko
2014, Journal of Climate (27) 7529-7549
Projected changes in global rainfall patterns will likely alter water supplies and ecosystems in semiarid regions during the coming century. Instrumental and paleoclimate data indicate that natural hydroclimate fluctuations tend to be more energetic at low (multidecadal to multicentury) than at high (interannual) frequencies. State-of-the-art global climate models do not...
Downscaled climate projections for the Southeast United States: evaluation and use for ecological applications
Adrienne Wootten, Kara Smith, Ryan Boyles, Adam Terando, Lydia Stefanova, Vasru Misra, Tom Smith, David L. Blodgett, Fredrick Semazzi
2014, Open-File Report 2014-1190
Climate change is likely to have many effects on natural ecosystems in the Southeast U.S. The National Climate Assessment Southeast Technical Report (SETR) indicates that natural ecosystems in the Southeast are likely to be affected by warming temperatures, ocean acidification, sea-level rise, and changes in rainfall and evapotranspiration. To better...
Ecosystem effects in the Lower Mississippi River Basin
D. Phil Turnipseed, Yvonne C. Allen, Brady R. Couvillion, Karen L. McKee, William C. Vervaeke
2014, Professional Paper 1798-L
The 2011 Mississippi River flood in the Lower Mississippi River Basin was one of the largest flood events in recorded history, producing the largest or next to largest peak streamflow for the period of record at a number of streamgages on the lower Mississippi River. Ecosystem effects include changes to...
Watching the dark: New surveillance cameras are changing bat research
Paul M. Cryan, P. Marcos Gorresen
2014, BATS Magazine (32) 2-4
It is, according to an old proverb, “better to light a candle than to curse the darkness.” And those of us trying to discover new insights into the mysterious lives of bats often do a lot of cursing in the darkness. Bats do most things under cover of night, and...
Shaking from injection-induced earthquakes in the central and eastern United States
Susan E. Hough
2014, Bulletin of the Seismological Society of America (104) 2619-2626
In this study I consider the ground motions generated by 11 moderate (Mw4.0-5.6) earthquakes in the central and eastern United States that are thought or suspected to be induced by fluid injection. Using spatially rich intensity data from the USGS “Did You Feel It?” system, I show that the...
Mercury deposition and methylmercury formation in Narraguinnep Reservoir, southwestern Colorado, USA
John E. Gray, Mark E. Hines, Harland L. Goldstein, Richard L. Reynolds
2014, Applied Geochemistry (50) 82-90
Narraguinnep Reservoir in southwestern Colorado is one of several water bodies in Colorado with a mercury (Hg) advisory as Hg in fish tissue exceed the 0.3 μg/g guideline to protect human health recommended by the State of Colorado. Concentrations of Hg and methyl-Hg were measured in reservoir bottom sediment and...
Effects of disturbance and climate change on ecosystem performance in the Yukon River Basin boreal forest
Bruce K. Wylie, Matthew B. Rigge, Brian Brisco, Kevin Mrnaghan, Jennifer R. Rover, Jordan Long
2014, Remote Sensing (6) 9145-9169
A warming climate influences boreal forest productivity, dynamics, and disturbance regimes. We used ecosystem models and 250 m satellite Normalized Difference Vegetation Index (NDVI) data averaged over the growing season (GSN) to model current, and estimate future, ecosystem performance. We modeled Expected Ecosystem Performance (EEP), or anticipated productivity, in undisturbed...
Depletion and capture: revisiting “The source of water derived from wells"
Leonard F. Konikow, Stanley A. Leake
2014, Groundwater (52) 100-111
A natural consequence of groundwater withdrawals is the removal of water from subsurface storage, but the overall rates and magnitude of groundwater depletion and capture relative to groundwater withdrawals (extraction or pumpage) have not previously been well characterized. This study assesses the partitioning of long-term cumulative withdrawal volumes into fractions...
Seismological and geodetic constraints on the 2011 Mw5.3 Trinidad, Colorado earthquake and induced deformation in the Raton Basin
William D. Barnhart, Harley M. Benz, Gavin P. Hayes, Justin L. Rubinstein, E. Bergman
2014, Journal of Geophysical Research B: Solid Earth (119) 7923-7933
The Raton Basin of southern Colorado and northern New Mexico is an actively produced hydrocarbon basin that has experienced increased seismicity since 2001, including the August 2011 Mw5.3 Trinidad normal faulting event. Following the 2011 earthquake, regional seismic observations were used to relocate 21 events, including the 2011 main shock,...
Characterizing recent and projecting future potential patterns of mountain pine beetle outbreaks in the Southern Rocky Mountains
Lu Liang, Todd Hawbaker, Yanlei Chen, Zhi-Liang Zhu, Peng Gong
2014, Applied Geography (55) 165-175
The recent widespread mountain pine beetle (MPB) outbreak in the Southern Rocky Mountains presents an opportunity to investigate the relative influence of anthropogenic, biologic, and physical drivers that have shaped the spatiotemporal patterns of the outbreak. The aim of this study was to quantify the landscape-level drivers that explained the...
Can mercury in fish be reduced by water level management? Evaluating the effects of water level fluctuation on mercury accumulation in yellow perch (Perca flavescens)
James H. Larson, Ryan P. Maki, Brent C. Knights, Brian R. Gray
2014, Ecotoxicology (23) 1555-1563
Mercury (Hg) contamination of fisheries is a major concern for resource managers of many temperate lakes. Anthropogenic Hg contamination is largely derived from atmospheric deposition within a lake’s watershed, but its incorporation into the food web is facilitated by bacterial activity in sediments. Temporal variation in Hg content of fish...
