Influence of population density and length structure on angler catch rate in kokanee fisheries
Zachary B. Klein, Michael C. Quist, Daniel J. Schill, Andrew M. Dux, Matthew P. Corsi
2020, North American Journal of Fisheries Management (40) 182-189
Management agencies are often charged with providing fisheries that lead to angler participation. Catch rate is one of the primary drivers of angler participation but can be influenced by a suite of factors, including population structure (e.g., density and size structure). The complexity of understanding how population structure influences angler...
Movement dynamics of Smallmouth Bass in a large western river system
Conor McClure, Michael C. Quist, Joseph Kozfkay, Michael Peterson, Daniel J. Schill
2020, North American Journal of Fisheries Management (40) 154-162
The Snake River, Idaho, between Swan Falls and Brownlee dams supports a popular fishery for Smallmouth Bass Micropterus dolomieu. Recently, anglers have expressed concern about harvest of Smallmouth Bass associated with seasonal congregations in and near the lower reaches of several major tributaries. Little is known about Smallmouth Bass movement in...
Overall results and key findings on the use of UAV visible-color, multispectral, and thermal infrared imagery to map agricultural drainage pipes
Barry J. Allred, Luis Martinez, Melake Fessehazion, Greg Rouse, Tanja N. Williamson, DeBonne Wishart, Triven Koganti, Robert Freeland, Neal Eash, Adam Batschelet, Robert Featheringill
2020, Agricultural Water Management (232)
Effective and efficient methods are needed to map agricultural subsurface drainage systems. Visible-color (VIS-C), multispectral (MS), and thermal infrared (TIR) imagery obtained by unmanned aerial vehicles (UAVs) may provide a means for determining drainage pipe locations. Aerial surveys using a UAV with VIS-C, MS, and TIR cameras were conducted at...
Eastern oyster clearance and respiration rates in response to acute and chronic exposure to suspended sediment loads
Megan K. La Peyre, S. K. Bernasconi, R. Lavaud, S. M. Casas, J. F. La Peyre
2020, Journal of Sea Research (157) 1-7
Coastal Louisiana supports some of the most productive areas for the eastern oyster, Crassostrea virginica. Changing conditions from restoration and climate change alter freshwater and sediment inflows into critical estuarine areas affecting water quality, including salinity and concentrations of suspended sediment. This study examined the effects of acute (1 h) and chronic (8 weeks) exposure of...
Conservation genomics in a changing arctic
Jocelyn P. Colella, Sandra L. Talbot, Christian Brochmann, Eric B. Taylor, Eric P. Hoberg, Joseph A. Cook
2020, Trends in Ecology and Evolution (35) 149-162
Although logistically challenging to study, the Arctic is a bellwether for global change and is becoming a model for questions pertinent to the persistence of biodiversity. Disruption of Arctic ecosystems is accelerating, with impacts ranging from mixing of biotic communities to individual behavioral responses. Understanding these changes is crucial for...
Final project memorandum: Identifying conservation objectives for the Gulf Coast habitats of the black skimmer and gull-billed tern
James P. Cronin
2020, Report
Many shorebirds and nearshore waterbirds are of conservation concern across the Gulf of Mexico due to stressors such as human disturbance, predation, and habitat loss and degradation. Conservation and protection of these birds is important for the functioning of healthy ecosystems and for maintaining biodiversity in North America. Consequently, resource...
Pacific Continental Shelf Environmental Assessment (PaCSEA): Characterization of Seasonal Water Masses within the Northern California Current System Using Airborne Remote Sensing off Northern California, Oregon, and Washington, 2011–2012
J A Schulien, Josh Adams, Jonathan J. Felis
2020, Report
Here, we use ocean color measurements (Figure 1) and sea surface temperature (SST) data collected using sensors mounted on low-flying aircraft to characterize NCCS water masses and identify patterns among seasons and between years. To accomplish this, we applied k-means clustering to measured and derived ecologically-relevant physical and bio-optical variables...
Influence of remediation on sediment toxicity within the Grand Calumet River, Indiana, USA
Jeffery A. Steevens, John M. Besser, Rebecca A. Dorman, Daniel W. Sparks
2020, Chemosphere (249)
The Grand Calumet River (GCR), located in northern Indiana, is contaminated due to a wide range of historical industrial activities. This study was conducted to determine the influence of sediment remediation within the GCR on concentrations of chemical contaminants and toxicity to sediment-dwelling organisms. Between 2005 and 2016, sediments with...
Extending seasonal discharge records for streamgage sites on the North Fork Fortymile and Middle Fork Fortymile Rivers, Alaska, through water year 2019
Janet H. Curran
2020, Scientific Investigations Report 2020-5003
Daily mean discharge values were estimated for May 20–September 30 for 1976–82 and 2006–18 for the U.S. Geological Survey North Fork Fortymile River and Middle Fork Fortymile River streamgage sites in Alaska. A relation between study streamgage discharge and discharge for an index streamgage on the main-stem Fortymile River...
Review of studies of composition, toxicology and human health impacts of wastewater from unconventional oil and gas development from shale
Lynn M. Crosby, William H. Orem
2020, Book chapter, A handbook of environmental toxicology: Human disorders and ecotoxicology
Unconventional oil and gas (UOG) extractions has produced large economic benefits. However, prudent management of UOG wastes necessitates a thorough understanding of the complex composition, fate, and potential impacts of wastewater releases. UOG production results in large volumes of wastewater. Despite limited re-use of the wastewater, the majority needs to...
Identification of management thresholds of urban development in support of aquatic biodiversity conservation
Craig D. Snyder, John A. Young
2020, Ecological Indicators (112)
Urbanization degrades stream ecosystems and causes loss of bodiversity. Using benthic macroinvertebrates as a surragate for overall aquatic diversity, we conducted a series of analytical approaches to derive management thresholds of urban development designed to link ecological responses to the primary management goal of protecting aquatic diversity in streams within...
Direct trace element determination in oil and gas produced waters with inductively coupled plasma - Optical emission spectrometry (ICP-OES): Advantages of high salinity tolerance
Aaron M. Jubb, Mark Engle, Jessica Chenault, Madalyn Blondes, Cloelle G. Danforth, Colin Doolan, Tanya Gallegos, Dan Mueller, Jenna Shelton
2020, Geostandards and Geoanalytical Research (44) 385-397
Waters co-produced during petroleum extraction are the largest waste stream from oil and gas development. Reuse or disposal of these waters is difficult due to their high salinities and the sheer volumes generated. Produced waters may also contain valuable mineral commodities. While an understanding of produced water trace element composition...
Mortality of endangered juvenile Lost River Suckers associated with cyanobacteria blooms in mesocosms in Upper Klamath Lake, Oregon
Summer M. Burdick, Danielle M Hereford, Carla M. Conway, Nathan V Banet, Rachel L. Powers, Barbara A. Martin, Diane G. Elliott
2020, Transactions of the American Fisheries Society (149) 245-265
Unsustainably high mortality within the first 2 years of life prevents endangered Lost River Suckers Deltistes luxatus in Upper Klamath Lake, Oregon, from recruiting to spawning populations. Massive blooms of the cyanobacterium Aphanizomenon flos‐aquae and their subsequent death and decay in the lake (bloom‐crashes) are associated with high pH, low percent oxygen saturation, high total...
Differences in antibody responses against Chelonid Alphaherpesvirus 5 (ChHV5) suggest differences in virus biology in ChHV5-seropositive green turtles from Hawaii and ChHV5-seropositive green turtles from Florida
Thierry M. Work, Julie Dagenais, Anna Willimann, George Balazs, Kate Mansfield, Mathias Ackermann
2020, Journal of Virology (94)
Fibropapillomatosis (FP) is a tumor disease associated with a herpesvirus (chelonid herpesvirus 5 [ChHV5]) that affects mainly green turtles globally. Understanding the epidemiology of FP has been hampered by a lack of robust serological assays to monitor exposure to ChHV5. This is due in part to an inability to efficiently...
Predictive relations between acid-base chemistry and fish assemblages in streams of the Adirondack Mountains
Diane Bertok, Barry P. Baldigo, Scott D. George
2020, NYSERDA Report 20-04
Surface waters across much of New York State’s Adirondack Mountains were acidified in the late 20th century but began to recover following the 1990 Title IV Amendments to the Clean Air Act. Previous assessments of acidification recovery in the Adirondacks have generally been based on surface water chemistry data and...
Infrasound generated by the 2016-2017 shallow submarine eruption of Bogoslof volcano, Alaska
John J. Lyons, Alexandra M. Iezzi, David Fee, Hans Schwaiger, Aaron Wech, Matthew M. Haney
2020, Bulletin of Volcanology (82)
The 2016–2017 shallow submarine eruption of Bogoslof volcano produced numerous infrasound signals over 9 months that were recorded on six Alaska Volcano Observatory (AVO) arrays at ranges of 59 to over 800 km from the volcano. The lack of geophysical monitoring near Bogoslof and the repeated production of volcanic clouds to flight...
Progress in natural capital accounting for ecosystems
Lars Hein, Kenneth J. Bagstad, Carl Obst, Bram Edens, Sjoerd Schenau, Gem Castillo, Francois Soulard, Claire Brown, Amanda Driver, Michael Bordt, Anton Steurer, Rocky Harris, Alejandro Capparros
2020, Science (6477) 514-515
Reversing the ongoing degradation of the planet's ecosystems requires timely and detailed monitoring of ecosystem change and uses. Yet, the System of National Accounts (SNA), first developed in response to the economic crisis of the 1930s and used by statistical offices worldwide to record economic activity (for example, production, consumption,...
Expert bioblitzes facilitate non-native fish tracking and interagency partnerships
Pamela J. Schofield
2020, Management of Biological Invasions (11) 139-154
Documenting the distribution and composition of non-native species populations can be challenging, especially when species cross jurisdictional boundaries that require interagency coordination. Herein I report the development of three tools that have been used in Florida over the past seven years to assist with tracking of non-native fishes: 1) an...
Applications of correlative light and electron microscopy (CLEM) to organic matter in the North American shale petroleum systems
Brett J. Valentine, Paul C. Hackley
2020, Book chapter, Mudstone diagenesis: Research perspectives for shale hydrocarbon reservoirs, seals, and source rocks
Scanning electron microscopy (SEM) has revolutionized our understanding of shale petroleum systems through microstructural characterization of dispersed organic matter (OM). However, due to the low atomic weight of carbon, all OM appears black in SEM (BSE image) regardless of differences in thermal maturity or OM type (kerogen types or solid...
Ecosystem-specific growth responses to climate pattern by a temperate freshwater fish
Jonathan J. Spurgeon, Mark A. Pegg, Kevin L. Pope, Lin Xie
2020, Ecological Indicators (112)
Somatic growth patterns among animal populations are maintained through complex processes that vary among ecosystems. Changes in growth patterns may be concomitant with changes in climate; however, understanding how growth will manifest among ecosystems is limited. Information embedded within fish hard-parts...
Habitat affinities and at-sea ranging behaviors among main Hawaiian Island seabirds: Breeding seabird telemetry, 2013–2016
Josh Adams, Jonathan J. Felis, Max Czapanskiy
2020, Report
Recent Hawaiʻi state clean energy policy mandates and federal interest in developing offshore renewable energy resources have prompted unsolicited lease requests for offshore wind energy infrastructure (OWEI) to be located in ocean waters off Hawaiʻi. This study describing at-sea ranging behaviors for five seabirds was intended to provide new information...
Estimating late 19th century hydrology in the Greater Everglades Ecosystem: An integration of paleoecologic data and models
Frank E. Marshall, Christopher E. Bernhardt, G. Lynn Wingard
2020, Frontiers in Environmental Science (8)
Determining hydrologic conditions prior to instrumental records is a challenge for restoration of freshwater ecosystems worldwide. Paleoecologic data provide this information on past conditions and when these data are used to adjust hydrologic models, allow conditions to be hindcast that may not be directly estimated from the paleo-data alone....
Throughfall reduction x fertilization: Deep soil water usage in a clay rich ultisol under loblolly pine in the Southeast USA
Jiaguo Qi, Daniel M. Markewitz, Mary Ann McGuire, Lisa Samuelson, Eric Ward
2020, Frontiers in Forests and Global Change (2)
Forests in the Southeast USA are predicted to experience a moderate decrease in precipitation inputs over this century that may result in soil water deficiency during the growing season. The potential impact of a drier climate on the productivity of managed loblolly pine (Pinus taeda L.) plantations in the Southeast...
SPEAR: The next generation GFDL modeling system for seasonal to multidecadal prediction and projection
Thomas L. Delworth, William F. Cooke, Alistair A. Adcroft, Mitchell Bushuk, Jan-Huey Chen, Krista A. Dunne, Paul Ginoux, Richard Gudgel, Lucas Harris, Matthew J. Harrison, Robert W. Hallberg, Nathaniel Johnson, Sarah B. Kapnick, Shian-Jian Lin, Feiyu Lu, Sergey Malyshev, Paul C. D. Milly, Hiroyuki Murakami, Vaishali Naik, Salvatore Pascale, David Paynter, Anthony Rosati, M. D. Schwarzkopf, Elena Shevliakova, Seth Underwood, Andrew T. Wittenberg, Baoqiang Xiang, Xiaosong Yang, Fanrong Zeng, Honghai Zhang, Liping Zhang, Ming Zhao
2020, Journal of Advances in Modeling Earth Systems (12)
We document the development and simulation characteristics of the next generation modeling system for seasonal to decadal prediction and projection at the Geophysical Fluid Dynamics Laboratory (GFDL). SPEAR (Seamless System for Prediction and EArth System Research) is built from component models recently developed at GFDL—the AM4 atmosphere model, MOM6 ocean...
Climate change vulnerability assessment for Pacific Lamprey in rivers of the Western United States
Christina J Wang, Howard A Shaller, Kelly C. Coates, Michael C. Hayes, Robert K Rose
2020, Journal of Freshwater Ecology (35) 29-55
Pacific Lamprey (Entosphenus tridentatus) are a native anadromous species that, like salmon, historically returned to spawn in large numbers in watersheds along the west coast of the United States (U.S.). Lamprey play a vital role in river ecosystems and are one of the oldest vertebrates that have persisted over time...
