Impact of spectral resolution on quantifying cyanobacteria in lakes and reservoirs: A machine-learning assessment
Kiana Zolfaghari, Nima Pahlevan, Caren Binding, Daniela Gurlin, Stefan G.H. Simis, Antonio Ruiz Verdu, Lin Li, Christopher J. Crawford, Andrea VanderWoude, Reagan Errera, Arthur Zastepa, Claude R. Duguay
2022, IEEE Transactions in Geoscience and Remote Sensing (60)
Cyanobacterial harmful algal blooms are an increasing threat to coastal and inland waters. These blooms can be detected using optical radiometers due to the presence of phycocyanin (PC) pigments. The spectral resolution of best-available multispectral sensors limits their ability to diagnostically detect PC in the presence of other photosynthetic pigments....
Broad-scale geographic and temporal assessment of northern long-eared bat (Myotis septentrionalis) maternity colony-landscape association
Katherine M. Gorman, Sabrina M. Deeley, Elaine L. Barr, Samuel R. Freeze, Nicholas Kalen, Michael S. Muthersbaugh, W. Mark Ford
2022, Endangered Species Research (77) 119-130
As the federally threatened northern long-eared bat Myotis septentrionalis continues to decline due to white-nose syndrome (WNS) impacts, the application of effective conservation measures is needed but often hindered by the lack of ecological data. To date, recommended management practices have been adopted in part from other federally listed sympatric species such...
Characteristics of day-roosts used by the Northern Long-eared Bat (Myotis septentrionalis) in coastal New York
Katherine M. Gorman, Elaine L. Barr, Tomas Nocera, W. Mark Ford
2022, Northeastern Naturalist (29) 153-170
In North America, Myotis septentrionalis (Northern Long-eared Bat) has experienced precipitous declines from white-nose syndrome. As these bats become rare and difficult to capture, additional day-roost assessments to inform management may fill gaps in our understanding, particularly in habitats and regions where such roosts have never been surveyed. Over 2 summers, we...
Demography and site fidelity of a grassland bird, the Henslow’s Sparrow, in powerline right-of-way habitat
Elizabeth Ann Hunter, Abigail Dwire, Todd M. Schneider
2022, Journal of Field Ornithology (93)
Grassland birds are among the fastest declining avian species in North America, primarily due to habitat loss. In the southeastern U.S., much grassland and open savanna habitat has been converted to timber production or agriculture, neither of which typically provides habitat for breeding or wintering grassland birds. Powerline right-of-ways could...
Satellite solar-induced chlorophyll fluorescence and near-infrared reflectance capture complementary aspects of dryland vegetation productivity dynamics
Xian Wang, Joel A. Biederman, John F. Knowles, Russell L. Scott, Alexander J Turner, Matthew P. Dannenberg, Philipp Kohler, Christian Frankenberg, Marcy E Litvak, Gerald N. Flerchinger, Beverly E. Law, Hyojung Kwon, Sasha C. Reed, William J Parton, Greg A. Barron-Gafford, William K. Smith
2022, Remote Sensing of the Environment (270)
Mounting evidence indicates dryland ecosystems play an important role in driving the interannual variability and trend of the terrestrial carbon sink. Nevertheless, our understanding of the seasonal dynamics of dryland ecosystem carbon uptake through photosynthesis [gross primary productivity (GPP)] remains relatively limited due in part to the limited availability of...
Nitrogen reductions have decreased hypoxia in the Chesapeake Bay: Evidence from empirical and numerical modeling
Luke T Frankel, Marjorie A. M. Friedrichs, Pierre St-Laurent, Aaron J. Bever, Romuald N. Lipcius, Gopal Bhatt, Gary W. Shenk
2022, Science of the Total Environment (814)
Seasonal hypoxia is a characteristic feature of the Chesapeake Bay due to anthropogenic nutrient input from agriculture and urbanization throughout the watershed. Although coordinated management efforts since 1985 have reduced nutrient inputs to the Bay, oxygen concentrations at depth in the summer still frequently...
Acute and lagged fitness consequences for a sagebrush obligate in a post mega-wildfire landscape
Christopher R. Anthony, Lee J. Foster, Christian A. Hagen, Katie Dugger
2022, Ecology and Evolution (12)
Species responses to disturbance influence their extinction risks. Greater sage- grouse (Centrocercus urophasianus) are bioindicators of sagebrush ecosystem health and the loss of sagebrush (Artemisia spp.) due to wildfire, can cause long-term declines in sage- grouse populations and...
Seasonal variability of invertebrate prey diet and selectivity of the dominant forage fishes in Lake Huron
Patricia M Dieter, David Bunnell, David M. Warner
2022, Food Webs (30) 1-10
Predators can shift their diets and even selectivity in response to changing environmental conditions. Since the early 2000s, Lake Huron experienced major food-web shifts that have caused changes in the prey availability and quality for consumers at multiple trophic levels. Previous studies have reported declining energetic condition for key planktivorous fishes,...
Food, beverage, and feedstock processing facility wastewater: A unique and underappreciated source of contaminants to U.S. streams
Laura E. Hubbard, Dana W. Kolpin, Carrie E. Givens, Bradley D. Blackwell, Paul M. Bradley, James L. Gray, Rachael F. Lane, Jason R. Masoner, R. Blaine McCleskey, Kristin M. Romanok, Mark W. Sandstrom, Kelly L. Smalling, Daniel L. Villeneuve
2022, Environmental Science & Technology (56) 1028-1040
Process wastewaters from food, beverage, and feedstock facilities, although regulated, are an under-investigated environmental contaminant source. Food process wastewaters (FPWWs) from 23 facilities in 17 U.S. states were sampled and documented for a plethora of chemical and microbial contaminants. Of the 576 analyzed organics, 184 (32%) were detected at least...
Acoustic and genetic data can reduce uncertainty regarding populations of migratory tree-roosting bats impacted by wind energy
Amanda Hale, Cris D. Hein, Bethany Straw
2022, Animals (12)
Wind turbine-related mortality may pose a population-level threat for migratory tree-roosting bats, such as the hoary bat (Lasiurus cinereus) in North America. These species are dispersed within their range, making it impractical to estimate census populations size using traditional survey methods. Nonetheless, understanding population size and...
Acquisition of Moon measurements by Earth orbiting sensors for lunar calibration
Thomas C. Stone
2022, IEEE Transactions on Geoscience and Remote Sensing (60)
The reflected light from the Moon can be utilized as a reference for radiometric calibration by employing a model to generate reference values corresponding to the Moon observations made by instruments. Using a calibration target that is outside the atmosphere provides a distinct advantage for...
Representing plant diversity in land models: An evolutionary approach to make ‘Functional Types’ more functional
Leander D.L. Anderegg, Daniel Mark Griffith, Jeannine Cavender-Bares, William J. Riley, Joseph A. Berry, Todd E. Dawson, Christopher J. Still
2022, Global Change Biology (28) 2541-2554
Plants are critical mediators of terrestrial mass and energy fluxes, and their structural and functional traits have profound impacts on local and global climate, biogeochemistry, biodiversity, and hydrology. Yet Earth System Models (ESMs), our most powerful tools for predicting the effects of humans on the coupled...
Relational database for horizontal‐to‐vertical spectral ratios
Pengfei Wang, Paolo Zimmaro, Tristan E Buckreis, Tatiana Gospe, Scott J Brandenberg, Sean Kamran Ahdi, Alan Yong, Jonathan P. Stewart
2022, Seismological Research Letters (93) 1075-1088
Frequency‐dependent horizontal‐to‐vertical spectral ratios (HVSRs) of Fourier amplitudes from three‐component recordings can provide useful information for site response modeling. However, such information is not incorporated into most ground‐motion models, including those from Next‐Generation Attenuation projects, which instead use the time‐averaged shear‐wave velocity (VS"><span...
Reservoir attributes display cascading spatial patterns along river basins
N.M. Faucheux, A.R. Sample, C.A. Aldridge, D.M. Norris, C. Owens, Victoria R. Starnes, S. VanderBloemen, Leandro E. Miranda
2022, Water Resources Research (58)
Considering reservoirs as linear fragments in a basin's river network could improve understanding, predictability, and management efficiency. We looked for general cascading spatial patterns across five categories of reservoir attributes: land cover, morphology and hydrology, fish habitat, fish assemblages, and fisheries. Attributes were pulled from various databases for large reservoirs...
Modeling the occurrence of M ∼ 5 caldera collapse-related earthquakes in Kīlauea volcano, Hawai'i
Andrea L. Llenos, Andrew J. Michael
2022, Geophysical Research Letters (49)
During the 2018 Kīlauea eruption and caldera collapse, M ∼ 5 caldera collapse earthquakes occurred almost daily from mid-May until the beginning of August. While caldera collapses happen infrequently, the collapse-related seismicity damaged nearby structures, and so these events should be included in a complete seismic hazard assessment. Here,...
A quantitative soil-geomorphic framework for developing and mapping ecological site groups
Travis W. Nauman, Samuel S Burch, Joel T. Humphries, Anna C. Knight, Michael C. Duniway
2022, Rangeland Ecology and Management (81) 9-33
Land management decisions need context about how landscapes will respond to different circumstances or actions. As ecologists’ understanding of nonlinear ecological dynamics has evolved into state-and-transition models (STMs), they have put more emphasis on defining and mapping the soil, geomorphological, and climate...
Demographic response of brown treesnakes to extended population suppression
Melia G. Nafus, Shane R. Siers, Brenna A. Levine, Zachary C. Quiogue, Amy A. Yackel Adams
2022, Journal of Wildlife Management (86)
From a management perspective, reptiles are relatively novel invasive taxa. Few methods for reptile control have been developed and very little is known about their effectiveness for reducing reptile populations, particularly when the goal is eradication. Many reptiles, and especially snakes, are cryptic, secretive, and undergo...
Reconstructing the paleoceanographic and redox conditions responsible for variations in uranium content in North American Devonian black shales
Michelle L. Abshire, Natascha Riedinger, John M. Clymer, Clint Scott, Silke Severmann, Stephen J. Romaniello, James O. Puckette
2022, Palaeogeography, Palaeoclimatology, Palaeoecology (587)
The uranium (U) content, and more recently, the ratio between 238U and 235U in black shales are commonly applied as a proxy to determine redox conditions and infer organic-richness. Uranium contents typically display a linear relationship with total organic carbon (TOC) in shales. This relationship is due to...
Synthetic evaluation of infrasonic multipole waveform inversion
Alexandra M. Iezzi, Robin S Matoza, David Fee, Keehoon Kim, A.D. Jolly
2022, Journal of Geophysical Research-Solid Earth (127)
Acoustic source inversions estimate the mass flow rate of volcanic explosions or yield of chemical explosions and provide insight into potential source directionality. However, the limitations of applying these methods to complex sources and their ability to resolve a stable solution have not been investigated in detail....
Geochemical insights into formation of enigmatic ironstones from Rio Grande rise, South Atlantic Ocean
Mariana Benites, James R. Hein, Kira Mizell, Kenneth A. Farley, Jonathon Treffkorn, Luigi Jovane
2022, Marine Geology (444)
Rio Grande Rise (RGR) is an intraplate oceanic elevation in the South Atlantic Ocean that formed at a hotspot on the Mid-Atlantic Ridge during the Cretaceous. In spreading center and hotspot environments, ironstones form mainly by biomineralization of reduced Fe from hydrothermal fluids or oxidation of sulfide deposits. However, RGR...
Effects of salinity and a glucocorticoid antagonist, RU486, on waterborne aldosterone and corticosterone of northern leopard frog larvae
Brian J. Tornabene, Creagh W Breuner, Blake R. Hossack, Erica J Crespi
2022, General and Comparative Endocrinology (317)
Increased salinity is an emerging contaminant of concern for aquatic taxa. For amphibians exposed to salinity, there is scarce information about the physiological effects and changes in osmoregulatory hormones such as corticosterone (CORT) and aldosterone (ALDO). Recent studies have quantified effects of salinity on CORT physiology of amphibians based on...
Phytoplankton community interactions and cyanotoxin mixtures in three recurring surface blooms within one lake
Victoria Christensen, Hayley T. Olds, Jack E. Norland, Eakalak Khan
2022, Journal of Hazardous Materials (427)
Cyanobacteria can produce numerous secondary metabolites (cyanotoxins) with various toxicities, yet data on cyanotoxins in many lakes are limited. Moreover, little research is available on complex relations among cyanobacteria that produce toxins. Therefore, we studied cyanobacteria and 19 cyanotoxins at three sites with recurring blooms in Kabetogama Lake (USA). Seven of 19...
New insights into organic matter accumulation from high-resolution geochemical analysis of a black shale: Middle and Upper Devonian Horn River Group, Canada
Haolin Zhou, Nicholas B. Harris, Tian Dong, Korhan Ayranci, Jilu Feng, Benoit Rivard, Paul C. Hackley, Javin J. Hatcherian
2022, Geological Society of America Bulletin (134) 2130-2144
Organic matter (OM) accumulation in organic matter-rich mudstones, or black shales, is generally recognized to be controlled by combinations of bioproductivity, preservation, and dilution. However, specific triggers of OM deposition in these formations are commonly difficult to identify with geochemical proxies, in part because of feedbacks that cause geochemical proxies...
Mapped predictions of manganese and arsenic in an alluvial aquifer using boosted regression trees
Katherine J. Knierim, James A. Kingsbury, Kenneth Belitz, Paul Stackelberg, Burke J. Minsley, James R. Rigby
2022, Groundwater (60) 362-376
Manganese (Mn) concentrations and the probability of arsenic (As) exceeding the drinking-water standard of 10 μg/L were predicted in the Mississippi River Valley alluvial aquifer (MRVA) using boosted regression trees (BRT). BRT, a type of ensemble-tree machine-learning model, were created using predictor variables that affect Mn and...
Does where they start affect where they finish? A multimethod investigation of the role of stocking location on survival and dispersal of hatchery-reared Lake Sturgeon in Missouri River tributaries
M.J. Moore, Craig P. Paukert, T.W. Bonnot, B. Brooke, T. Moore
2022, River Research and Applications (38) 627-638
Despite ongoing Lake Sturgeon recovery efforts, little is known about the role of stocking location on survival and dispersal to nursery habitats. We stocked age-0 Lake Sturgeon at four sites in two adjacent Missouri River tributaries and used telemetry to examine whether survival and dispersal differed among stocking sites and...
