Demographic factors affecting population growth in giant gartersnakes
Jonathan P. Rose, Julia Ersan, Glenn D. Wylie, Michael L. Casazza, Brian J. Halstead
2019, Journal of Wildlife Management (83) 1540-1551
Demographic models provide insight into which vital rates and life stages contribute most to population growth. Integral projection models (IPMs) offer flexibility in matching model structure to a species’ demography. For many rare species, data are lacking for key vital rates, and uncertainty might dissuade researchers from attempting to build...
A spatial model of streaked horned lark breeding habitat in the Columbia River, USA
James Hatten, Gary L. Slater, Jerrmaine L. Treadwell, Matthew R. Stevenson
2019, Ecological Modelling (409)
The streaked horned lark (hereafter “lark”; Eremophila alpestris strigata) is a federally listed bird subspecies of the Pacific Northwest that occupies open landscapes with short vegetation and abundant bare ground. Across its breeding range, which has contracted dramatically, the lark relies primarily on human-modified habitats maintained in early successional states...
Three-layered silver nanoparticles to trace dissolution and association to a green alga
Dominic Ponton, Marie Noele Croteau, Samuel N Luoma, Sahar Pourhoseini, Ruth Merrifield, Jamie Lead
2019, Nanotoxicology (13) 1149-1160
Core-shell silver nanoparticles (NPs) consisting of an inner Ag core and successive layers of Au and Ag (Ag@Au@Ag) were used to measure the simultaneous association of Ag NPs and ionic Ag by the green alga Chlamydomonas (C.) reinhardtii. Dissolution of the inner Ag core was prevented by a gold (Au)...
Invasive silver carp may compete with unionid mussels for algae: First experimental evidence
Elizabeth P Tristano, Alison A. Coulter, Teresa Newton, James # Garvey
2019, Aquatic Conservation: Marine and Freshwater Ecosystems (29) 1749-1757
1. Unionid mussels are imperiled throughout the United States, where their global diversity is highest. Silver carp (Hypophthalmichthys molitrix Valenciennes in Cuvier & Valenciennes, 1844), an invasive planktivorous fish, has spread throughout Midwestern rivers and currently threatens the Great Lakes. Because silver carp remove plankton and other particles from...
Wetland management strategy to reduce mercury export in water and bioaccumulation in fish
Joshua T. Ackerman, Jacob Fleck, Collin A. Eagles-Smith, Mark C. Marvin-DiPasquale, Lisamarie Windham-Myers, Mark P. Herzog, Harry L. McQuillen
2019, Environmental Toxicology and Chemistry (38) 2178-2196
Wetland environments provide numerous ecosystem services but also facilitate methylmercury (MeHg) production and bioaccumulation. We developed a wetland‐management technique to reduce MeHg concentrations in wetland fish and water. We physically modified seasonal wetlands by constructing open‐ and deep‐water treatment cells at the downstream end of seasonal wetlands to promote naturally...
Effects of microcystin-LR on juvenile Lost River suckers (Deltistes luxatus) during feeding trials, Upper Klamath Lake, Oregon, 2014−16
Barbara A. Martin, Kathy R. Echols, Diane G. Elliott, Kevin Feltz, Carla M. Conway, Summer M. Burdick
2019, Open-File Report 2019-1079
Executive SummaryHistorically, populations of Lost River suckers (Deltistes luxatus) of the Upper Klamath Basin were so numerous that they were commercially harvested; however, declining numbers throughout the 20th century led to the listing of the species under the United States Endangered Species Act in 1988. Habitat destruction, poor...
The effect of stress changes on time-dependent earthquake probabilities for the central Wasatch Fault Zone, Utah, USA
A. Verdecchia, S. Carena, B. Pace, Christopher DuRoss
2019, Geophysical Journal International (219) 1065-1081
Static and quasi-static Coulomb stress changes produced by large earthquakes can modify the probability of occurrence of subsequent events on neighboring faults. This approach is based on physical (Coulomb stress changes) and statistical (probability calculations) models, which are influenced by the quality and quantity of data available in the study...
Ecological health indicators
Paul L. Angermeier
2019, Book chapter, Encyclopedia of Ecology
Contemporary policymakers rarely stress ecological knowledge, and yet this knowledge remains crucial—just as it was in prehistory—to protecting overall human well-being. Measuring carefully selected ecological health indicators—that is, signs or symptoms, especially those focused on biotic assemblages—can provide insights into the ecological condition of...
Water-level data for the Albuquerque Basin and adjacent areas, central New Mexico, period of record through September 30, 2018
Andre B. Ritchie, Amy E. Galanter
2019, Data Series 1116
The Albuquerque Basin, located in central New Mexico, is about 100 miles long and 25–40 miles wide. The basin is hydrologically defined as the extent of consolidated and unconsolidated deposits of Tertiary and Quaternary age that encompasses the structural Rio Grande Rift between San Acacia to the south and Cochiti...
Alongshore momentum balance over shoreface-connected ridges, Fire Island, NY
Conor Ofsthun, Xiaodong Wu, George Voulgaris, John C. Warner
2019, Continental Shelf Research (186) 21-33
Hydrodynamic and hydrographic data collected on the inner shelf of Fire Island, NY, over a region of shoreface-connected ridges (SFCRs) are used to describe wind-driven circulation over uneven topographies along relatively straight coastlines. The data revealed a predominantly alongshore flow, under westward wind forcing, with localized offshore current veering over...
Trade-offs relating to grassland and forest mine reclamation approaches in the central Appalachian region and its implications for the songbird community
Petra B. Wood, Eric L. Margenau, Cathy A. Weakland, Donald J. Brown
2019, Avian Conservation and Ecology (14)
Surface mining in the Appalachian region, USA, converts large areas of mature forest to early-successional habitat. This shift in landscape structure has the potential to reduce habitat availability and suitability for forest-dwelling songbirds by reducing and fragmenting mature forest, but also to increase habitat availability for grassland and shrubland-associated songbirds....
Towards recovery of an endangered island endemic: Distributional and behavioral responses of Key Largo woodrats associated with exotic predator removal
Michael V. Cove, Theodore Simons, Beth Gardner, Allan F. O’Connell
2019, Biological Conservation (237) 423-429
Exotic predators create novel ecological contexts for native species, particularly when prey exhibit predator naïve behaviors. Population recovery of island endemic species following predator eradication has been documented broadly, but studies examining mammalian prey behavioral responses to exotic predator removal are less common. The Key Largo woodrat (Neotoma floridana smalli)...
Population dynamics and evaluation of management scenarios for white sturgeon in the Sacramento-San Joaquin River basin
Shannon E. Blackburn, Marty L. Gingras, Jason DuBois, Zachary J. Jackson, Michael C. Quist
2019, North American Journal of Fisheries Management (39) 896-912
Recent surveys suggest a declining population of White Sturgeon Acipenser transmontanus in the Sacramento–San Joaquin River basin (SSJ), California. Probable reasons for the decline include overharvest and habitat degradation compounded by poor recruitment during recent droughts. Despite the importance and status of White Sturgeon, knowledge of their population dynamics in the SSJ...
Using a Bayesian network to understand the importance of coastal storms and undeveloped landscapes for the creation and maintenance of early successional habitat
Sara L. Zeigler, Benjamin T. Gutierrez, Emily J. Sturdivant, Daniel H. Catlin, James D. Fraser, A. Hecht, Sarah M. Karpanty, Nathaniel G. Plant, E. Robert Thieler
2019, PLoS ONE (14)
Coastal storms have consequences for human lives and infrastructure but also create important early successional habitats for myriad species. For example, storm-induced overwash creates nesting habitat for shorebirds like piping plovers (Charadrius melodus). We examined how piping plover habitat extent and location changed on barrier islands in New York, New...
Decision analysis for the reintroduction of Bull Trout into the lower Pend Oreille River, Washington
Joseph R. Benjamin, William R. Brignon, Jason B. Dunham
2019, North American Journal of Fisheries Management (39) 1026-1045
The decision to reintroduce a species can be difficult owing to conflicting opinions and objectives, as well as uncertainty of the outcome. Structured decision making addresses these considerations by identifying realistic fundamental objectives and building achievable management alternatives, within a quantitative modeling framework. The process is driven by participation of...
Spatial and temporal variation of ecosystem properties at macroscales
Patricia A. Soranno, Tyler Wagner, Sarah M. Collins, Jean-Francois Lapierre, Samantha K. Oliver
2019, Ecology Letters (22) 1587-1598
Although spatial and temporal variation in ecological properties has been well-studied, crucial knowledge gaps remain for studies conducted at macroscales and for ecosystem properties related to material and energy. We test four propositions of spatial and temporal variation in ecosystem properties within a macroscale (1000 km's) extent. We fit Bayesian hierarchical...
Fluvial sedimentary history of Arlington Canyon, Channel Islands National Park, California
R. Randall Schumann, Jeffrey S. Pigati
2019, Journal of Quaternary Science (34) 499-508
Arlington Canyon, in the northwest part of Santa Rosa Island, Channel Islands National Park, California, has been the setting for important scientific discoveries over the past half century, including the oldest human remains in North America, several vertebrate fossil sites, and purported evidence of a catastrophic extinction event at the...
Using UAS capabilities to help identify hummock-hollow formation and fragmentation in critical marsh habitat (Spartina patens) for mottled ducks in southeast Texas
William R. Jones, Stephen B. Hartley, Camille L. Stagg, Michael J. Osland
2019, Open-File Report 2019-1045
For many years, marshes in the coastal areas from Texas to Louisiana have served as critical habitat for Anas fulvigula, the mottled duck. Mottled ducks are a priority species in the Texas/Louisiana Gulf Coast area and have been affected by critical habitat reduction. In recent years, mottled duck habitats have...
Climate vulnerability assessment for Pacific salmon and steelhead in the California Current Large Marine Ecosystem
Lisa G Crozier, Michelle M McClure, Tim J. Beechie, Steven J. Bograd, David A. Boughton, Mark H. Carr, Thomas D. Cooney, Jason B. Dunham, Correigh M. Greene, Melissa A Haltuch, Elliott L. Hazen, Damon M Holzer, David D. Huff, Rachel C. Johnson, Chris E Jordan, Issac C Kaplan, Steven T Lindley, Nathan J Mantua, Peter B. Moyle, James M Myers, Mark W Nelson, Brian C Spence, Laurie A. Weitkamp, Thomas H. Williams, Ellen Willis-Norton
2019, PLoS ONE (14)
Major ecological realignments are already occurring in response to climate change. To be successful, conservation strategies now need to account for geographical patterns in traits sensitive to climate change, as well as climate threats to species-level diversity. As part of an effort to provide such information, we conducted...
The bee fauna of coastal Napatree Point and two inland sites in southern Rhode Island
Aya Rothwell, Howard S. Ginsberg
2019, Northeastern Naturalist (26) 446-464
We surveyed the bee fauna at Napatree Point, a coastal barrier beach in southwestern Rhode Island, using bee-bowl and netting samples, and compared results to bee-bowl samples at 2 inland sites. We collected a total of 53 species and morphospecies at Napatree Point, including 5 likely Rhode Island state records...
Resource Assessment Economic Filter (RAEF)—A graphical user interface supporting implementation of simple engineering mine cost analyses of quantitative mineral resource assessment simulations
Jason L. Shapiro, Robinson Jr.
2019, Techniques and Methods 7-C23
Economic evaluations of undiscovered mineral resources provide important context in which to consider the results of quantitative mineral resource assessments. The U.S. Geological Survey economic analysis method uses a simple engineering cost model approach developed by the U.S. Bureau of Mines that applies mine and mill engineering cost equations to...
Endless forams: >34,000 modern planktonic foraminiferal images for taxonomic training and automated species recognition using convolutional neural networks
Allison Y. Hsiang, Anieke Brombacher, Marina Costa Rillo, Maryline J. Mleneck-Vautravers, Stephen Connett, Sian Lordsmith, Anna Jentzen, Michael J. Henehan, Brett Metcalfe, Isabel Fenton, Bridget Wade, Lyndsey Fox, Julie Meilland, Catherine V. Davis, Ulrike Baranowski, Jeroen Groeneveld, Kirsty M. Edgar, Aurore Movellan, Tracy Aze, Harry J. Dowsett, Giles Miller, Nelson Rios, Pincelli M. Hull
2019, Paleoceanography and Paleoclimatology (34) 1157-1177
Accurate planktonic foraminiferal species identification is central to many paleoceanographic studies, from selecting specific species for geochemical research to elucidating the biotic dynamics of microfossil communities relevant to physical oceanographic processes and interconnected phenomena such as climate change. However, species identification varies among taxonomic schools, few resources exist to train...
The importance of simulation assumptions when evaluating detectability in population models
Adrian P. Monroe, Gregory T. Wann, Cameron L. Aldridge, Peter S. Coates
2019, Ecosphere (10)
Population monitoring is important for investigating a variety of ecological questions, and N-mixture models are increasingly used to model population size (N) and trends (lambda) while estimating detectability (p) from repeated counts within primary periods (when populations are closed to changes). Extending these models to dynamic processes with serial dependence...
Giving ecological meaning to satellite-derived fire severity metrics across North American forests
Sean Parks, Lisa M. Holsinger, Michael J. Koontz, Luke S. Collins, Ellen Whitman, Marc-Andre Parisien, Rachel A. Loehman, Jennifer L. Barnes, Jean-Francois Bourdon, Jonathan Boucher, Yan Boucher, Anthony C. Caprio, Adam Collingwood, Ron Hall, Jane Park, Lisa Saperstein, Charlotte Smetanka, Rebecca A. Smith, Nick Soverel
2019, Remote Sensing (11)
Satellite-derived spectral indices such as the relativized burn ratio (RBR) allow fire severity maps to be produced in a relatively straightforward manner across multiple fires and broad spatial extents. These indices often have strong relationships with field-based measurements of fire severity, thereby justifying their widespread use in management and science....
Monitoring breeding and survival of ring-necked pheasant (Phasianus colchicus) in the Sacramento Valley, Sacramento-San Joaquin River Delta, and Klamath Basin, northern California—Five-year summary, 2013–17
Ian A. Dwight, Peter S. Coates, Jessica H. Vogt, Joseph L. Atkinson, Joseph P. Fleskes, Daniel P. Connelly, Matt G. Meshriy, Scott C. Gardner, Simone T. Stoute, Maurice E. Pitesky
2019, Open-File Report 2019-1062
The U.S. Geological Survey Western Ecological Research Center, Pheasants Forever, Mandeville Island Duck Club, and the California Department of Fish and Wildlife collaborated in a reconnaissance study to monitor populations of ring-necked pheasant (Phasianus colchicus) using radio-telemetry in the Sacramento Valley, Sacramento-San Joaquin River Delta, and Klamath Basin of...
