Evaluating aromatization of solid bitumen generated in the presence and absence of water: Implications for solid bitumen reflectance as a thermal proxy
Paul C. Hackley, Aaron M. Jubb, Patrick L. Smith, Ryan J. McAleer, Brett J. Valentine, Javin J. Hatcherian, Palma J. Botterell, Justin E. Birdwell
2022, International Journal of Coal Geology (258)
Geological models for petroleum generation suggest thermal conversion of oil-prone sedimentary organic matter in the presence of water promotes increased liquid saturate yield, whereas absence of water causes formation of an aromatic, cross-linked solid <a class="topic-link" title="Learn more about bitumen...
Using a multi-model ensemble approach to determine biodiversity hotspots with limited occurrence data in understudied areas: An example using freshwater mussels in México
Alexander H. Kiser, Kevin S. Cummings, Jeremy S. Tiemann, Chase H. Smith, Nathan A. Johnson, Roel R. Lopez, Charles R. Randklev
2022, Ecology and Evolution (15)
Species distribution models (SDMs) are an increasingly important tool for conservation particularly for difficult-to-study locations and with understudied fauna. Our aims were to (1) use SDMs and ensemble SDMs to predict the distribution of freshwater mussels in the Pánuco River Basin in Central México; (2) determine...
Long-term effects of prescribed fire on large tree growth in mixed conifer forests at Lassen Volcanic National Park, California
Zachary Wenderott, Phillip J. van Mantgem, Micah C. Wright, Calvin A. Farris, Rosemary L. Sherriff
2022, Forest Ecology and Management (517)
Prescribed fire in dry coniferous forests of the western U.S. is used to reduce fire hazards. How large, old trees respond to these treatments is an important management consideration. Growth is a key indicator of residual tree condition, which can be predictive of mortality and...
Temperature explains the formation of a metalimnetic oxygen minimum in a deep mesotrophic lake
Cory P. McDonald, Mahta Naziri Saeed, Dale M. Robertson, Stephanie Prellwitz
2022, Inland Waters (12) 331-340
Green Lake, a deep mesotrophic lake located in a primarily agricultural watershed in central Wisconsin, USA, has experienced annual metalimnetic oxygen minima since the early 20th century. However, the severity of the phenomenon has increased over time, and late-summer dissolved oxygen (DO) concentrations have typically been <3 mg L−1 in...
Accessibility of environmental data for sharing: The role of UX in large cyberinfrastructure projects
Rachel Volentine, Alison Specht, Suzie Allard, Mike Frame, Rachael Hu, Lisa Zolly
2022, Ecological Informatics (63)
Incorporating user experience (UX) testing when creating research cyberinfrastructure is often overlooked, but if left too late, the cost of retrofitting is considerable, and the very clients the cyberinfrastructure was built to serve may be lost. Successfully integrating UX testing into the product...
Quantifying the conservation status and abundance trends of wildlife communities with detection-nondetection data
Matthew T Farr, Timothy O O’Brien, Charles Yackulic, Elise F. Zipkin
2022, Conservation Biology (36)
Effective conservation requires understanding species' abundance patterns and demographic rates across space and time. Ideally, such knowledge should be available for whole communities, as variation in species' dynamics can elucidate factors leading to biodiversity losses. However, collecting data to simultaneously estimate abundance and demographic rates is often prohibitively time-intensive and...
Evaluation for internal consistency in the thermodynamic network involving fluorite, cryolite and villiaumite solubilities and aqueous species at 25°C and 1 bar
D. Kirk Nordstrom
2022, Mineralogical Magazine (86) 652-660
Thermodynamic data are constrained by the interrelated thermodynamic equations in addition to the observational measurements and their uncertainties. The consequence is a network of thermodynamic properties that can be evaluated for their internal consistency. In this study, three fluoride minerals that can cause high fluoride concentrations in...
Hybrid enrichment of adaptive variation revealed by genotype-environment associations in montane sedges
Richard G.J. Hodel, Robert Massatti, L Lacey Knowles
2022, Molecular Ecology (31) 3722-3737
The role of hybridization in diversification is complex and may result in many possible outcomes. Not only can hybridization produce new lineages, but those lineages may contain unique combinations of adaptive genetic variation derived from parental taxa that allow hybrid-origin lineages to occupy unique environmental space...
Central Midwest Water Science Center— Harmful Algal Blooms team
Katherine M. Summers, Heather M. Krempa, Jessica D. Garrett
2022, Fact Sheet 2022-3011
The U.S. Geological Survey (USGS) Central Midwest Water Science Center (CMWSC) includes three States—Illinois, Iowa, and Missouri. USGS water science centers across the Nation provide information on water resources including streamflow, water use, water availability, and the quality of surface water and groundwater (https://www.usgs.gov/mission-areas/water-resources).The USGS CMWSC Harmful Algal...
Estimating stream temperature in the Willamette River Basin, northwestern Oregon—A regression-based approach
Laurel E. Stratton Garvin, Stewart A. Rounds, Norman L. Buccola
2022, Scientific Investigations Report 2021-5022
The alteration of thermal regimes, including increased temperatures and shifts in seasonality, is a key challenge to the health and survival of federally protected cold-water salmonids in streams of the Willamette River basin in northwestern Oregon. To better support threatened fish species, the U.S. Army Corps of Engineers (USACE) and...
Flight characteristics forecast entry by eagles into rotor-swept zones of wind turbines
Brian W. Rolek, Melissa A. Braham, Tricia A. Miller, Adam E. Duerr, Todd E. Katzner, Jennifer D. McCabe, Leah Dunn, Christopher J.W. McClure
2022, Ibis (164) 968-980
Operators of wind power facilities can mitigate wildlife mortality by slowing or stopping wind turbines (hereafter ‘curtail’) when birds are at an increased risk of collision. Some facility operators curtail when individual birds have flight characteristics (e.g. altitude, distance or relative bearing of a bird's flight path) that exceed some...
Estimating occupancy from autonomous recording unit data in the presence of misclassifications and detection heterogeneity
Matt Clement, Andy Royle, Ronald Mixan
2022, Methods in Ecology and Evolution (13) 1719-1729
1. Autonomous Recording Units (ARUs) are now widely used to survey communities of species. These surveys generate spatially and temporally replicated counts of unmarked animals, but such data typically include false negatives and misclassified detections, both of which may vary across sites in proportion to abundance. These data challenges can...
A validation of satellite derived cyanobacteria detections with state reported events and recreation advisories across U.S. lakes
Peter Whitman, Blake Schaeffer, Wilson Salls, Megan Coffer, Sachidananda Mishra, Bridget Seegers, Keith A. Loftin, Richard Stumpf, P. Jeremy Werdell
2022, Harmful Algae (115)
Cyanobacteria harmful algal blooms (cyanoHABs) negatively affect ecological, human, and animal health. Traditional methods of validating satellite algorithms with data from water samples are often inhibited by the expense of quantifying cyanobacteria indicators in the field and the lack of public data....
Factors affecting interannual variation in diet and body lipid content of age-0 Scaphirhynchus sturgeon in the lower Missouri River, USA
A. Gonzalez, James M. Long, N.J.C. Gosch, A.P. Civiello, T.R. Gemeinhardt
2022, River Research and Applications (38) 1167-1178
The ability of young fish to find and consume food during early life history is an important factor affecting survival and recruitment. While dietary assessments for age-0 Scaphirhynchus sturgeon (shovelnose sturgeon and pallid sturgeon) in the Missouri River, USA have received increased attention over the last 15 years,...
Fuel reduction treatments reduce modeled fire intensity in the sagebrush steppe
Lisa M. Ellsworth, Beth A. Newingham, Scott Shaff, C. F. Rick Williams, Eva K. Strand, Matt Reeves, David A. Pyke, Eugene W. Schupp, Jeanne C. Chambers
2022, Ecosphere (13)
Increased fire size and frequency coupled with annual grass invasion pose major challenges to sagebrush (Artemisia spp.) ecosystem conservation, which is currently focused on protecting sagebrush community composition and structure. A common strategy for mitigating potential fire is to use fuel treatments that alter the structure and...
The researcher's lament: Why do they ignore my science?
Gustavo A. Bisbal
2022, Ecosphere (13)
The researcher's lament is shared by many environmental and conservation scientists who complain about the little support they receive for their research proposals during the review and selection process. Understandably, any hopes of having their anticipated scientific findings applied toward the formulation of environmental management decisions or natural resource policy...
Characterization of and relations among precipitation, streamflow, suspended-sediment, and water-quality data at the U.S. Army Garrison Fort Carson and Piñon Canyon Maneuver Site, Colorado, water years 2016–18
William A. Battaglin, Zachary D. Kisfalusi
2022, Scientific Investigations Report 2022-5018
Frequent and prolonged military training maneuvers are an intensive type of land use that may disturb land cover, compact soils, and have lasting effects on adjacent stream hydrology and ecosystems. To better understand the potential effect of military training on hydrologic and environmental processes, the U.S. Geological Survey in cooperation...
Preliminary petrographic and geochemical data for potential source rocks for sediment-hosted stratabound copper deposits in the Lake Superior portion of the Midcontinent Rift
Timothy S. Hayes, Frank K. Mazdab
2022, Conference Paper, Institute on Lake Superior Geology: Proceedings, 2022
No abstract available....
Quantitative method development to determine feed consumption using a dye
James J. Wamboldt, Justine Nelson, Linnea M Thomas, J. Nolan Steiner, Jillian Hebert, Richard A. Erickson, Joel G. Putnam
2022, North American Journal of Aquaculture (84) 354-369
Although there are many methods to determine ingestion and absorption of aquafeeds, none exist that are simple, cost-effective, and quantitative and that can mark fish with a long-lasting, visible indicator. In addition to aquafeed development, selective baits are needed that can be used for aquatic invasive species removal efforts, including...
Heterogeneity of recreationists in a park and protected area
O.A. DaRugna, M.A. Kaemingk, C.J. Chizinski, Kevin L. Pope
2022, PLoS ONE (17)
Limited information and resources have caused many parks and protected areas (PPAs) to functionally manage recreationists as a single homogeneous group, despite potential negative social and ecological consequences. We aimed to evaluate the homogeneity of recreationists at the Valentine National Wildlife Refuge (NWR) by 1) quantifying frequencies of consumptive (i.e.,...
Scale dependence of coral reef oases and their environmental correlates
Robin Elahi, Peter J. Edmunds, Ruth D. Gates, Ilsa B. Kuffner, Brian B. Barnes, Iliana Chollett, Travis A. Courtney, James R. Guest, Elizabeth A. Lenz, Lauren Toth, T. Shay Viehman, Ivor D. Williams
2022, Ecological Applications (32)
Identifying relatively intact areas within ecosystems and determining the conditions favoring their existence is necessary for effective management in the context of widespread environmental degradation. In this study, we used 3766 surveys of randomly selected sites in the United States and U.S. Territories to identify the...
Trophic interactions and feedbacks maintain intact and degraded states of Hawaiian tropical forests
Stephanie G. Yelenik, Eli T. Rose, Eben H. Paxton
2022, Ecosphere (13)
Feedbacks within ecosystems can lead to internal reinforcement of the current state providing ecosystem resilience. Often, multiple biotic interactions across trophic levels play a role in such feedbacks, yet these are generally studied independently, obscuring the relative importance of interactions among different factors. We look at...
Marine mammal hotspots across the circumpolar Arctic
Charmain Hamilton, Christian Lydersen, Jon Aars, Mario Acquarone, Todd C. Atwood, Alastair Baylis, Martin Biuw, Andrei N. Boltunov, Erik W. Born, Peter L. Boveng, Tanya M. Brown, Michael Cameron, John J. Citta, Justin A. Crawford, Rune Dietz, Jim Elias, Steven H. Ferguson, Aaron T. Fisk, Lars P. Folkow, Kathryn J. Frost, Dmitri M. Glazov, Sandra M. Granquist, Rowenna Gryba, Lois A. Harwood, Tore Haug, Mads Peter Heide-Jorgensen, Nigel E. Hussey, Jimmy Kalinek, Kristin L. Laidre, Dennis I. Litovka, Josh M. London, Lisa Loseto, Shannon MacPhee, Marianne Marcoux, Cory J. D. Matthews, Kjell J Nilssen, Erling S. Nordoy, Greg O’Corry-Crowe, Nils Oien, Morten Tange Olsen, Lori T. Quakenbush, Aqqalu Rosing-Asvid, Varvara Semenova, Kim E. W. Shelden, Olga V. Shpak, Garry Stenson, Luke Storrie, Signe Sveegaard, Jonas Teilmann, Fernando Ugarte, Andrew L. Von Duyke, Cortney Watt, Oystein Wiig, Ryan R. Wilson, David J. Yurkowski, Kit M. Kovacs
2022, Diversity and Distributions (28) 2729-2753
AimIdentify hotspots and areas of high species richness for Arctic marine mammals.LocationCircumpolar Arctic.MethodsA total of 2115 biologging devices were deployed on marine mammals from 13 species in the Arctic from 2005 to 2019. Getis-Ord Gi* hotspots were calculated based on the number of...
The gap between experts, farmers and non-farmers on perceived environmental vulnerability and the influence of values and beliefs
J.S. Bergtold, M.M. Caldas, S.R. Ramsey, M.R. Sanderson, G. Granco, Martha E. Mather
2022, Journal of Environmental Management (316)
Science has played a mixed role in guiding conservation and sustainability-oriented decision-making by individuals, policymakers, institutions, and governments. Not all science-based conservation and sustainability initiatives that address issues facing humanity and ecosystems and global problems have gained public support. Conservation decisions and...
Abundance and productivity of Marbled Murrelets (Brachyramphus marmoratus) off central California during the 2020 and 2021 breeding seasons
Jonathan J. Felis, Josh Adams, Cheryl Horton, Emily C. Kelsey, Laney M. White
2022, Data Report 1157
Marbled murrelets (Brachyramphus marmoratus) have been listed as “endangered” by the State of California and “threatened” by the U.S. Fish and Wildlife Service since 1992 in California, Oregon, and Washington. Information regarding marbled murrelet abundance, distribution, population trends, and habitat associations is critical for risk assessment, effective management, evaluation of...
