Estimating migratory connectivity of birds when re-encounter probabilities are heterogeneous
Emily B. Cohen, Jeffrey A. Hostelter, J. Andrew Royle, Peter P. Marra
2014, Ecology and Evolution (4) 1659-1670
Understanding the biology and conducting effective conservation of migratory species requires an understanding of migratory connectivity – the geographic linkages of populations between stages of the annual cycle. Unfortunately, for most species, we are lacking such information. The North American Bird Banding Laboratory (BBL) houses an extensive database of marking,...
Brittle deformation and slope failure at the North Menan Butte tuff cone, Eastern Snake River Plain, Idaho
Chris H. Okubo
2014, Journal of Volcanology and Geothermal Research (278–279) 86-95
The manifestation of brittle deformation within inactive slumps along the North Menan Butte, a basaltic tuff cone in the Eastern Snake River Plain, is investigated through field and laboratory studies. Microstructural observations indicate that brittle strain is localized along deformation bands, a class of structural discontinuity that is predominant within...
Historic impact of watershed change and sedimentation to reefs along west-central Guam
Nancy G. Prouty, Curt D. Storlazzi, Amanda L. McCutcheon, John W. Jenson
2014, Coral Reefs (33) 733-749
Using coral growth parameters (extension, density, calcification rates, and luminescence) and geochemical measurements (barium to calcium rations; Ba/Ca) from coral cores collected in west-central Guam, we provide a historic perspective on sediment input to coral reefs adjacent to the Piti-Asan watershed. The months of August through December are dominated by...
Arthropod community structure on bark of koa (Acacia koa) and ʻōhiʻā (Metrosideros polymorpha) at Hakalau Forest National Wildlife Refuge, Hawaiʻi Island, Hawaiʻi
Robert W. Peck, Paul C. Banko, Matt Stelmach
2014, Report, Hawai�i Cooperative Studies Unit Technical Report
The arthropod community associated with tree bark contains a wide variety of taxa but is poorly described, particularly in Hawaiʽi. Our overall goals were to evaluate the abundance of arthropods available to foraging birds and how variation in bark substrates may contribute to arthropod distributions in native forests. Our study...
Platinum-group elements in southern Africa: mineral inventory and an assessment of undiscovered mineral resources
Michael L. Zientek, J. Douglas Causey, Heather L. Parks, Robert J. Miller
2014, Scientific Investigations Report 2010-5090-Q
The platinum-group elements, platinum, palladium, rhodium, ruthenium, iridium, and osmium, possess unique physical and chemical characteristics that make them indispensable to modern technology and industry. However, mineral deposits that are the main sources of these elements occur only in three countries in the world, raising concerns about potential disruption in...
Impact of stressors on transmission potential of Renibacterium salmoninarum in Chinook salmon
Maureen K. Purcell, James R. Winton
2014, Report
Renibacterium salmoninarum is the causative agent of bacterial kidney disease (BKD) affecting several species of Pacific salmon. The severity of BKD can range from a chronic infection to overt disease with high mortality as in the case of large losses of adult Chinook salmon (Oncorhynchus tshawytscha) in the Great Lakes...
The behavioural response of adult Petromyzon marinus to damage-released alarm and predator cues
István Imre, Richard Di Rocco, Cowan Belanger, Grant Brown, Nicholas S. Johnson
2014, Journal of Fish Biology (84) 1490-1502
Using semi‐natural enclosures, this study investigated (1) whether adult sea lamprey Petromyzon marinus show avoidance of damage‐released conspecific cues, damage‐released heterospecific cues and predator cues and (2) whether this is a general response to injured heterospecific fishes or a specific response to injured P. marinus. Ten replicate groups of 10 adult P. marinus, separated...
Home range and movements of American alligators (Alligator mississippiensis) in an estuary habitat
Ikuko Fujisaki, Kristen M. Hart, Frank J. Mazzotti, Michael S. Cherkiss, Autumn R. Sartain-Iverson, Brian M. Jeffery, Jeffrey S. Beauchamp, Mathew J. Denton
2014, Animal Biotelemetry (2)
Background Understanding movement patterns of free-ranging top predators throughout heterogeneous habitat is important for gaining insight into trophic interactions. We tracked the movements of five adult American alligators to delineate their estuarine habitat use and determine drivers of their activity patterns in a seasonally-fluctuating environment. We also compared VHF- and satellite-tracks...
Bouse Formation in the Bristol basin near Amboy, California, USA
David M. Miller, Robert E. Reynolds, Jordan E. Bright, Scott W. Starratt
2014, Geosphere (10) 462-475
Limestone beds underlain and overlain by alluvial fan conglomerate near Amboy, California, are very similar in many respects to parts of the Bouse Formation, suggesting that an arm of the Pliocene Bouse water body extended across a wide part of the southern Mojave Desert. The deposits are north of the...
Climate, not atmospheric deposition, drives the biogeochemical mass-balance of a mountain watershed
Jill S. Baron, Jared Heath
2014, Aquatic Geochemistry (20) 167-181
Watershed mass-balance methods are valuable tools for demonstrating impacts to water quality from atmospheric deposition and chemical weathering. Owen Bricker, a pioneer of the mass-balance method, began applying mass-balance modeling to small watersheds in the late 1960s and dedicated his career to expanding the literature and knowledge of complex watershed...
Model behavior and sensitivity in an application of the cohesive bed component of the community sediment transport modeling system for the York River estuary, VA, USA
Kelsey A. Fall, Courtney K. Harris, Carl T. Friedrichs, J. Paul Rinehimer, Christopher R. Sherwood
2014, Journal of Marine Science and Engineering (2) 413-436
The Community Sediment Transport Modeling System (CSTMS) cohesive bed sub-model that accounts for erosion, deposition, consolidation, and swelling was implemented in a three-dimensional domain to represent the York River estuary, Virginia. The objectives of this paper are to (1) describe the application of the three-dimensional hydrodynamic York Cohesive Bed Model,...
El Niño-Southern Oscillation is linked to decreased energetic condition in long-distance migrants
Kristina L. Paxton, Emily B. Cohen, Eben H. Paxton, Zoltan Nemeth, Frank R. Moore
2014, PLoS ONE (9)
Predicting how migratory animals respond to changing climatic conditions requires knowledge of how climatic events affect each phase of the annual cycle and how those effects carry-over to subsequent phases. We utilized a 17-year migration dataset to examine how El Niño-Southern Oscillation climatic events in geographically different regions of the...
Evaluation of high-frequency mean streamwater transit-time estimates using groundwater age and dissolved silica concentrations in a small forested watershed
Norman E. Peters, Douglas A. Burns, Brent T. Aulenbach
2014, Aquatic Geochemistry (20) 183-202
Many previous investigations of mean streamwater transit times (MTT) have been limited by an inability to quantify the MTT dynamics. Here, we draw on (1) a linear relation (r 2 = 0.97) between groundwater 3H/3He ages and dissolved silica (Si) concentrations, combined with (2) predicted streamwater Si concentrations from a...
Suitability of coastal marshes as Whooping Crane (Grus americana) foraging habitat in southwest Louisiana, USA
Sung-Ryong Kang, Sammy L. King
2014, Waterbirds (37) 254-263
Foraging habitat conditions (i.e., water depth, prey biomass, digestible energy density) can be a significant predictor of foraging habitat selection by wading birds. Potential foraging habitats of Whooping Cranes (Grus americana) using marshes include ponds and emergent marsh, but the potential prey and energy availability in these habitat types have...
Interacting effects of discharge and channel morphology on transport of semibuoyant fish eggs in large, altered river systems
Thomas A. Worthington, Shannon K. Brewer, Nicole Farless, Timothy B. Grabowski, Mark S. Gregory
2014, PLoS ONE (9)
Habitat fragmentation and flow regulation are significant factors related to the decline and extinction of freshwater biota. Pelagic-broadcast spawning cyprinids require moving water and some length of unfragmented stream to complete their life cycle. However, it is unknown how discharge and habitat features interact at multiple spatial scales to alter...
Influence of whitebark pine decline on fall habitat use and movements of grizzly bears in the Greater Yellowstone Ecosystem
Cecily M. Costello, Frank T. van Manen, Mark A. Haroldson, Michael R. Ebinger, Steven L. Cain, Kerry A. Gunther, Daniel D. Bjornlie
2014, Ecology and Evolution (4) 2004-2018
When abundant, seeds of the high-elevation whitebark pine (WBP; Pinus albicaulis) are an important fall food for grizzly bears (Ursus arctos) in the Greater Yellowstone Ecosystem. Rates of bear mortality and bear/human conflicts have been inversely associated with WBP productivity. Recently, mountain pine beetles (Dendroctonus ponderosae) have killed many cone-producing WBP...
Re-evaluation of Yellowstone grizzly bear population dynamics not supported by empirical data: response to Doak & Cutler
Frank T. van Manen, Michael R. Ebinger, Mark A. Haroldson, Richard B. Harris, Megan D. Higgs, Steve Cherry, Gary C. White, Charles C. Schwartz
2014, Conservation Letters (7) 323-331
Doak and Cutler critiqued methods used by the Interagency Grizzly Bear Study Team (IGBST) to estimate grizzly bear population size and trend in the Greater Yellowstone Ecosystem. Here, we focus on the premise, implementation, and interpretation of simulations they used to support their arguments. They argued that population increases documented...
Nearshore energy subsidies support Lake Michigan fishes and invertebrates following major changes in food web structure
Benjamin A. Turschak, David B. Bunnell, Sergiusz J. Czesny, Tomas O. Hook, John Janssen, David M. Warner, Harvey A. Bootsma
2014, Ecology, Evolution, and Systematics (95) 1243-1252
Aquatic food webs that incorporate multiple energy channels (e.g. nearshore benthic or pelagic) with varying productivity and turnover rates convey stability to biological communities by providing multiple independent energy sources. Within the Lake Michigan food web, invasive dreissenid mussels have caused rapid changes to food web structure and potentially altered...
Genomic characterization of H14 subtype influenza A viruses in New World waterfowl and experimental infectivity in mallards Anas platyrhynchos
Andrew M. Ramey, Rebecca L. Poulson, Ana S. Gonzalez-Reiche, Daniel R. Perez, David E. Stalknecht, Justin D. Brown
2014, PLoS ONE (9)
Recent repeated isolation of H14 hemagglutinin subtype influenza A viruses (IAVs) in the New World waterfowl provides evidence to suggest that host and/or geographic ranges for viruses of this subtype may be expanding. In this study, we used genomic analyses to gain inference on the origin and evolution of H14...
An intercomparison of three methods for the large-scale isolation of oceanic dissolved organic matter
Nelson W. Green, E. Michael Perdue, George R. Aiken, Kenna D. Butler, Hongmei Chen, Thorsten Dittmar, Jutta Niggemann, Aron Stubbins
2014, Marine Chemistry (161) 14-19
Dissolved organic matter (DOM) was isolated from large volumes of deep (674 m) and surface (21 m) ocean water via reverse osmosis/electrodialysis (RO/ED) and two solid-phase extraction (SPE) methods (XAD-8/4 and PPL) at the Natural Energy Laboratory of Hawaii Authority (NELHA). By applying the three methods to common water samples, the efficiencies...
Merging remote sensing data and national agricultural statistics to model change in irrigated agriculture
Jesslyn F. Brown, Md Shahriar Pervez
2014, Agricultural Systems (127) 28-40
Over 22 million hectares (ha) of U.S. croplands are irrigated. Irrigation is an intensified agricultural land use that increases crop yields and the practice affects water and energy cycles at, above, and below the land surface. Until recently, there has been a scarcity of geospatially detailed information about irrigation that...
Roosting and foraging social structure of the endangered Indiana bat (Myotis sodalis)
Alexander Silvis, Andrew B. Kniowski, Stanley D. Gehrt, W. Mark Ford
2014, PLoS ONE (9) 1-12
Social dynamics are an important but poorly understood aspect of bat ecology. Herein we use a combination of graph theoretic and spatial approaches to describe the roost and social network characteristics and foraging associations of an Indiana bat (Myotis sodalis) maternity colony in an agricultural landscape in Ohio, USA. We...
Relationships among walleye population characteristics and genetic diversity in northern Wisconsin Lakes
Matthew D. Waterhouse, Brian L. Sloss, Daniel A. Isermann
2014, Transactions of the American Fisheries Society (143) 744-756
The maintenance of genetic integrity is an important goal of fisheries management, yet little is known regarding the effects of management actions (e.g., stocking, harvest regulations) on the genetic diversity of many important fish species. Furthermore, relationships between population characteristics and genetic diversity remain poorly understood. We examined relationships among...
Using cumulative diet data and stable isotope analysis to determine trophic position of walleye Sander vitreus in a large, complex system
Mark J. Fincel, Daniel A. James, Steven R. Chipps, Blake A. Davis
2014, Journal of Freshwater Ecology (29) 441-447
Diet studies have traditionally been used to determine prey use and food web dynamics, while stable isotope analysis provides for a time-integrated approach to evaluate food web dynamics and characterize energy flow in aquatic systems. Direct comparison of the two techniques is rare and difficult to conduct in large, species...
Applications of spatial statistical network models to stream data
Daniel J. Isaak, Erin E. Peterson, Jay M. Ver Hoef, Seth J. Wenger, Jeffrey A. Falke, Christian E. Torgersen, Colin Sowder, E. Ashley Steel, Marie-Josée Fortin, Chris E. Jordan, Aaron S. Ruesch, Nicholas Som, Pascal Monestiez
2014, WIREs Water (1) 277-294
Streams and rivers host a significant portion of Earth's biodiversity and provide important ecosystem services for human populations. Accurate information regarding the status and trends of stream resources is vital for their effective conservation and management. Most statistical techniques applied to data measured on stream networks were developed for terrestrial...
