Hydrologic monitoring networks in the Death Valley Regional Flow System, Nye County, Nevada and Inyo County, California
Steven R. Reiner, Peggy E. Elliott, Katherine J. Earp, Wayne R. Belcher
2020, Fact Sheet 2020-3018
IntroductionWater is an important resource in the arid southwest region of the United States where there is a limited supply of surface water and groundwater. In the Death Valley regional groundwater flow system (DVRFS) in southern Nevada and eastern California, groundwater is the main source of supply for agricultural, commercial,...
Combining models of the critical streakline and the cross-sectional distribution of juvenile salmon to predict fish routing at river junctions
Dalton Hance, Russell Perry, Jon R. Burau, Aaron R. Blake, Paul Stumpner, Xiaochun Wang, Adam Pope
2020, San Francisco Estuary and Watershed Science (18)
Because fish that enter the interior Delta have poorer survival than those emigrating via the Sacramento River, understanding the mechanisms that drive entrainment rates at side channel junctions is critically important for the management of imperiled juvenile salmon. Here, we implement a previously proposed process-based conceptual model to study entrainment...
Bloater restoration
Jeremy P. Holden, Erin Brown, Brian Weidel, Michael J. Connerton, Brian O'Malley, C. Osborne
2020, Report, 2019 Annual report of the lake Ontario management unit
No abstract available....
Lake Ontario fall benthic prey fish assessment
Jeremy P. Holden, Brian Weidel, Michael J. Connerton, Brian P. O’Malley, C. Osborne
2020, Report, 2019 Annual report of the lake Ontario management unit
No abstract available....
NGWA Groundwater Modeling Advisory Panel Survey on the Use of Uncertainty Analysis in Groundwater Modeling
Steve Luis, Pete Schulmeyer, David Bean, Connor P. Newman, Dan Puddephatt, Rodney A. Sheets, Randall J. Hunt
2020, Report
This white paper provides the results of a survey by members of the NGWA Groundwater Modeling Advisory Panel to assess the use of uncertainty analysis in groundwater modeling.The objective of the survey was to improve understanding of the use of uncertainty analysis in practical groundwater modeling projects subject to real-world...
Lake Ontario spring prey fish assessment
Jeremy P. Holden, Brian Weidel, Michael J. Connerton
2020, Report, 2019 Annual report of the lake Ontario management unit
No abstract available....
A multiscale approach to understanding migratory land bird habitat use of functional stopover habitat types and management efforts
Theodore J. Zenzal Jr.
2020, Newsletter
It is hard to believe that many of the small “backyard birds” people see during spring and autumn can make migratory journeys that span thousands of kilometers. In fact, over two-thirds of all land birds (i.e., those not associated with aquatic habitats) and over half of the migratory species in...
Species and genetic diversity in Lake Huron in 2018
Wendylee Stott, Edward F. Roseman, Chris C. Wilson
2020, Special Publication 2020-01
Fish community objectives (FCOs) for species and genetic diversity (DesJardine et al. 1995) complement the species- or genera-specific objectives by recognizing that diversity within and among species can improve ecosystem resiliency through portfolio effects (DuFour et al. 2015). In Lake Huron, native species (such as Lake Trout and Lake Whitefish),...
Lake trout rehabilitation in Lake Ontario, 2019
Brian F. Lantry, Stacy Furgal, Brian Weidel, Michael Connerton, Dimitry Gorsky, Christopher Osborne
2020, Report, 2019 Lake Ontario Unit Annual Report
Each year we report on the progress toward rehabilitation of the Lake Ontario lake trout (Salvelinus namaycush) population, including the results of stocking, annual assessment surveys, creel surveys, and evidence of natural reproduction observed from all standard surveys performed by USGS and NYSDEC. The catch per unit effort of adult...
Lake trout spawning studies: Updates, new survey, and comparison to standard September gillnet survey
Stacy Furgal, Christopher Osborne, Brian F. Lantry, Brian Weidel, Dimitry Gorsky, Michael Connerton
2020, Report, 2019 Lake Ontario Unit Annual Report
In Lake Ontario, lake trout restoration efforts have not established a self-sustaining population. Herein we describe efforts to evaluate standard and new surveys, and to estimate dispersal from stocking locations, to better understand impediments to natural reproduction. In 2019, lake trout egg deposition was sampled at two locations, Stony Island...
Potential freshening impacts on fines migration and pore-throat clogging during gas hydrate production: 2-D micromodel study with Diatomaceous UBGH2 sediments
Junbong Jang, Shaung Cao, Laura A. Stern, William F. Waite, Jongwon Jung, Joo Yong Lee
2020, Marine and Petroleum Geology (116)
The methane gas hydrate stored in natural sediments is considered a potential gas resource. Countries such as China, India, Japan, and Korea are interested in commercializing this resource, and offshore field pilot tests for gas production have been conducted using depressurization methods to destabilize gas hydrate and facilitate the...
Bottom trawl assessment of Lake Ontario prey fishes, 2019
Brian Weidel, Brian O’Malley, Michael J. Connerton, Jeremy P. Holden, Christopher Osborne
2020, Report, NYSDEC Lake Ontario Annual Report 2019
Multi-agency, collaborative Lake Ontario bottom trawl surveys provide information for decision making related to Fish Community Objectives including predator-prey balance and understanding prey fish community diversity. In 2019, bottom trawl surveys in April (n = 252 tows) and October (n = 160 tows) sampled main lake and embayments at depths...
Gardening with climate-smart native plants in the Northeast
Bethany A. Bradley, A. Bayer, Bridget Griffin, Sydni Joubran, Brittany B. Laginhas, Lara Munro, Sam Talbot, Jenica M. Allen, Audrey Barker-Plotkin, Evelyn M. Beaury, Carrie Brown-Lima, Emily J. Fusco, Hailey Mount, Bailey Servais, Toni Lyn Morelli
2020, Report
2019 Lake Michigan Lake Trout Working Group Report
Charles P. Madenjian, Charles R. Bronte, Rick Clark, Ben Dickinson, Kevin Donner, Roger Gordon, Dale Hanson, John Janssen, Jory Jonas, Matthew Kornis, Steve Lenart, Dan Makauskas, Erik Olsen, Becky Redman, Laura Schmidt, Jason Smith, Ted Treska
2020, Report
This report provides a review on the progression of lake trout (Salvelinus namaycush) rehabilitation towards meeting the Salmonine Fish Community Objectives (FCOs) for Lake Michigan (Eshenroder et. al. 1995) and the interim goal and evaluation objectives articulated in A Fisheries Management Implementation Strategy for the Rehabilitation of Lake Trout in...
Comparing discharge computation methods in the Great Lakes connecting channels
Aaron F Thompson, Sandrina N Rodrigues, Jeanette C Fooks, Kevin Oberg, Tim J Calappi
2020, Journal of Hydrologic Engineering (25)
Records of discharge for the connecting channels within the Great Lakes Basin are important to national governments of Canada and the United States and the various water management agencies and users in the basin. For more than 100 years, the official discharge records for the St. Clair and...
Behavior, size, and body condition predict susceptibility to management and reflect post-treatment frequency shifts in an invasive snake
Melia G. Nafus, Amy A. Yackel Adams, S. M. Boback, Siers, Robert Reed
2020, Global Ecology and Conservatuin (21)
Foraging behavior can have population-level effects that are of interest for wildlife management. For invasive species, foraging behavior has been tied to establishment ability and rate of spread and is generally of import in understanding invasion biology. A major method for controlling invasive vertebrates is using food-based baits as attractants....
Forests do not limit bumble bee foraging movements in a montane meadow complex
John Michael Mola, Michael R. Miller, Sean M. O'Rourke, Neal M. Williams
2020, Ecological Entomology (45) 955-965
1. Understanding the roles of habitat fragmentation and resource availability in shaping animal movement are integral for promoting species persistence and conservation. For insects like bumble bees, their movement patterns affect the survival and reproductive potential of their colonies as well as the pollen flow of plant species. However, our...
Cascadia Margin cold seeps: Subduction zone fluids, gas hydrates, and chemosynthetic habitats
Amanda Demopoulos, Carolyn D. Ruppel, Nancy G. Prouty, Janet Watt, Tamara Baumberger, David A Butterfield
2020, Conference Paper, Workshop to identify national ocean exploration priorities in the Pacific: White paper submissions
Priority Geographic Area: The outer continental shelf and upper continental slope from Canada/U.S. border offshore Washington State to the Mendocino Fracture Zone (Northern California), entirely within the U.S. Exclusive Economic Zone (EEZ), from the outermost shelf to at least 2000 m water depth (Figure 1). Description of Priority Area: Since...
Mapping, exploration, and characterization of the California continental margin and associated features from the California-Oregon border to Ensenada, Mexico
Amanda Demopoulos, Nancy G. Prouty, Daniel S. Brothers, Janet Watt, James E. Conrad, Jason Chaytor, Chris Caldow
2020, Conference Paper, Workshop to identify national ocean exploration priorities in the Pacific: White paper submissions
Priority Geographic Area: Both within and outside US Exclusive Economic Zone (EEZ). California continental margin. This area includes and continues south of the geographic area captured in the Watt et al. white paper. Description of Priority Area: The California continental margin, from the narrow shelf to abyssal depths, contains diverse...
Steps to develop early warning systems and future scenarios of wave-driven flooding along coral reef-lined coasts
Gundula Winter, Curt D. Storlazzi, Sean Vitousek, Ap van Dongeren, Robert T. McCall, Ron Hoeke, William Skirving, John Marra, Johan Reyns, Jerome Aucan, Matthew J. Widlansky, Janet Becker, Chris Perry, Gerd Masselink, Ryan Lowe, Murray Ford, Andrew Pomeroy, Fernando J. Mendez, Ana C. Rueda, Moritz Wandres
2020, Frontiers in Marine Science (7)
Tropical coral reef-lined coasts are exposed to storm wave-driven flooding. In the future, flood events during storms are expected to occur more frequently and to be more severe due to sea-level rise, changes in wind and weather patterns, and the deterioration of coral reefs. Hence, disaster managers and coastal planners...
Determinants and consequences of dispersal in vertebrates with complex life cycles: a review of pond-breeding amphibians
H Cayuela, V Valenzuela-Sanchez, L Teulier, I Martinez-Solano, J Lena, J Merila, Erin L. Muths, R Shine, L Quay, M Denoel, J Clobert, B. Schmidt
2020, The Quarterly Review of Biology (95)
Dispersal is a central process in ecology and evolution. It strongly influences the dynamics of spatially structured populations, by affecting population growth rate and local colonization-extinction processes. Dispersal can also influence evolutionary processes because it determines rates and patterns of gene flow in spatially structured populations and is closely linked...
Population and harvest dynamics of midcontinent sandhill cranes
Aaron T. Pearse, Glen A. Sargeant, Gary Krapu, David A. Brandt
2020, Journal of Wildlife Management (84) 902-910
Sandhill cranes (Antigone canadensis) inhabiting the midcontinent of North America have been hunted since the 1960s under management goals of maintaining abundance, retaining geographic distribution, and maximizing sustainable harvest. Some biologists have raised concerns regarding harvest sustainability because sandhill cranes have lower reproductive rates than other game birds. We summarized...
Herring Disease Program II 19120111-E - 2019 Annual Report
Paul Hershberger, Maureen K. Purcell
2020, Report
We will investigate fish health factors that may be contributing to the failed recovery of Pacific herring populations in Prince William Sound. Field samples will provide infection and disease prevalence data from Prince William Sound and Sitka Sound that will inform the ASA model, serological data that will indicate the...
Flea parasitism and host survival in a plague-relevant system: Theoretical and conservation implications
David A. Eads, Rachel C. Abbott, Dean E. Biggins, Tonie E. Rocke
2020, Journal of Wildlife Diseases (56) 378-387
Plague is a bacterial zoonosis of mammalian hosts and flea vectors. The disease is capable of ravaging rodent populations and transforming ecosystems. Because plague mortality is likely to be predicted by flea parasitism, it is critical to understand vector dynamics. It has been hypothesized that paltry precipitation and reduced vegetative...
2019 Status of the Lake Ontario Lower Trophic Levels
Kristen T. Holeck, Lars G. Rudstam, Christopher Hotaling, Dave Lemon, Web Pearsall, Jana Lantry, Mike Connerton, Chris Legard, Steve LaPan, Zy Biesinger, Brian F. Lantry, Brian Weidel, Brian O’Malley
2020, Report, 2019 Lake Ontario Unit Annual Report
Spring total phosphorus (TP) in 2019 was 3.2 µg/L (offshore) and 4.7 µg/L (nearshore), both all-time lows; however, there is no significant time trend in our data series (1995-2019 for nearshore; 2002-2019 for offshore). Apr/May – Oct mean TP concentrations were low at both nearshore and offshore locations (range, 3.7...
