Rapa Nui (Easter Island) Rano Raraku crater lake basin: Geochemical characterization and implications for the Ahu-Moai Period
Elena Argiriadis, Mara Bortolini, Natalie Kehrwald, Marco Roman, Clara Turetta, Shahpara Hanif, Evans Osayuki Erhendi, Jose Miguel Ramirez Aliaga, David B. McWethy, Amy E. Myrbo, Anibal Pauchard, Carlo Barbante, Dario Battistel
2021, PLoS ONE (10)
Rano Raraku, the crater lake constrained by basaltic tuff that served as the primary quarry used to construct the moai statues on Rapa Nui (Easter Island), has experienced fluctuations in lake level over the past centuries. As one of the only freshwater sources on the island, understanding the...
A new approach to evaluate and reduce uncertainty of model-based biodiversity projections for conservation policy formulation
Bonnie Myers, Sarah R. Weiskopf, Alexey N. Shiklomanov, Simon Ferrier, Ensheng Weng, Kimberly Ann Casey, Michael Harfoot, Stephen Jackson, Allison K. Leidner, Timothy M. Lenton, Gordon Luikart, Hiroyuki Matsuda, Nathalie Pettorelli, Isabel M. D. Rosa, Alexander C. Ruane, Gabriel B. Senay, Shawn P. Serbin, Derek P. Tittensor, Beard Jr.
2021, BioScience (71) 1261-1273
Biodiversity projections with uncertainty estimates under different climate, land-use, and policy scenarios are essential to setting and achieving international targets to mitigate biodiversity loss. Evaluating and improving biodiversity predictions to better inform policy decisions remains a central conservation goal and challenge. A comprehensive strategy to evaluate and reduce uncertainty...
Hydrogeology and gain/loss assessment of two lakes contaminated with per- and polyfluoroalkyl substances, vicinity of Joint Base McGuire-Dix-Lakehurst, New Jersey, 2020–21
Alex R. Fiore, Christopher M. Witzigman, Robert G. Reiser
2021, Scientific Investigations Report 2021-5107
Per- and polyfluoroalkyl substances (PFAS) have been identified in two lakes near Joint Base McGuire-Dix-Lakehurst (JBMDL) in New Jersey—Little Pine Lake in Pemberton Township and Pine Lake in Manchester Township. The streams that enter these lakes begin in or near JBMDL where sources of PFAS contamination are located. The U.S....
Multiscale hyperspectral imaging of hydrothermal alteration in Yellowstone National Park, USA
Todd M. Hoefen, Raymond F. Kokaly, Keith Eric Livo, John Michael Meyer, JoAnn M. Holloway
2021, Conference Paper, 2021 IEEE International Geoscience and Remote Sensing Symposium (IGARSS) Proceedings
Imaging spectroscopy (hyperspectral imaging) data have mainly been used to map surface materials covering relatively small areas from airborne sensors over the past 20+ years. As part of the U.S. Geological Survey Integrated hyperspectral, geophysical and geochemical studies of Yellowstone National Park hydrothermal systems project, we have collected multiscale imaging...
Persistent nitrate in alpine waters with changing atmospheric deposition and warming trends
Sydney C. Clark, Rebecca T. Barnes, Isabella A. Oleksy, Jill S. Baron, Meredith G. Hastings
2021, Environmental Science and Technology (55) 14946-14956
Nitrate concentrations in high-elevation lakes of the Colorado Front Range remain elevated despite declining trends in atmospherically deposited nitrate since 2000. The current source of this elevated nitrate in surface waters remains elusive, given shifts in additional nitrogen sources via glacial inputs and atmospheric ammonium deposition. We present the complete...
Integrating satellite thermal imagery and global weather datasets for operational actual evapotranspiration mapping and drought early warning applications
Gabriel B. Senay, Stefanie Bohms, Claudia Young, Cheryl L. Holen, Maxwell Thomas Mcelhone, Michael Budde, James Rowland
2021, Conference Paper
The development and online access to an operational global actual evapotranspiration (ETa) is described. The global ETa is generated using the Operational Simplified Surface Energy Balance (SSEBop) model with inputs from the Moderate Resolution Imaging Spectroradiometer (MODIS) land surface temperature and gridded weather datasets. Global and regional ETa, as well...
USGS CEOS analysis ready data for land achievements and future plans
Christopher Barnes, Andreia Siqueira, Steven T. Labahn
2021, Conference Paper
The efforts of the Committee on Earth Observation Satellites (CEOS) to bring CEOS Analysis Ready Data for Land (CARD4L) products to countries and international organizations quickly and easily continues to receive important support from the U.S. Geological Survey (USGS). As part of its engagement with CARD4L, the USGS worked to...
A comprehensive statewide spatiotemporal stream assessment of per- and polyfluoroalkyl substances (PFAS) in an agricultural region of the United States
Dana W. Kolpin, Laura E. Hubbard, D.M. Cwiertny, Shannon M. Meppelink, D.A. Thompson, James L. Gray
2021, Environmental Science & Technology Letters (8) 981-988
Public concern regarding per- and polyfluoroalkyl substances (PFAS) has grown substantially in recent years. In addition, research has documented multiple potential agriculture-related release pathways for PFAS (e.g., biosolids and livestock manure). Nevertheless, little research on the environmental prevalence of PFAS has...
Disentangling stationary and dynamic estuarine fish habitat to inform conservation: Species-specific responses to physical habitat and water quality in San Francisco Estuary
Frederick V. Feyrer, Matthew J. Young, Brock Huntsman, Larry R. Brown
2021, Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science (13) 548-563
Estuaries represent critical aquatic habitat that connects surface water distributed between Earth’s landmasses and oceans. They are dynamic transitional ecosystems, which provide important habitat for fishes and other aquatic organisms. Effective conservation of species inhabiting estuaries requires knowledge of the habitat features that drive their abundance...
Hierarchical functional response of a forager on a wetland landscape
Don DeAngelis, Simeon Yurek, Stephen Tennenbaum, Hyo Won Lee
2021, Frontiers in Ecology and Evolution (9)
We show that for some foragers the form that a functional response takes depends on the temporal and spatial scales considered. In representing the consumption rate of an organism, it may be necessary to use a hierarchy of functional responses. Consider, for example, a wading bird foraging in...
Characterizing downstream migration timing of American Eels using commercial catch data in the Penobscot and Delaware rivers
Daniel M. Weaver, Douglas B. Sigourney, Mari-Beth Delucia, Joseph D. Zydlewski
2021, Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science (13) 534-547
Adult “silver-phase” American Eels Anguilla rostrata were a focus of commercial fisheries in the 1970s and 1980s, but stocks have been depleted due to many anthropogenic factors. One significant source of mortality occurs during the downstream migration of eels when passing through turbines at hydroelectric facilities. We sought to construct a model...
Data services in ocean science with a focus on the biology
Joana Beja, Leen Vandepitte, Abigail Benson, Anton Van de Putte, Dan Lear, Daphnis De Pooter, Gwenaelle Moncoiffe, John Nicholls, Nina Wambiji, Patricia Miloslavich, Vasilis Gerovasileiou
2021, Book chapter, Ocean science data: Collection, management, networking and services
Biological ocean science has a long history; it goes back millennia, whereas the related data services have emerged in the recent digital era of the past decades. To understand where we come from—and why data services are so important—we will start by taking you back to the rise in the...
Growth inhibition of the harmful alga Prymnesium parvum by plant-derived products and identification of ellipticine as highly potent allelochemical
Mousumi Mary, R. H. Rashel, Reynaldo Patino
2021, Journal of Applied Phycology (33) 3853-3860
Prymnesium parvum is a toxin-producing harmful alga that has caused ecological and economic damage worldwide. Effective methods to control blooms of this species in the field, however, are unavailable. This study examined five natural compounds present in the invasive plant Arundo donax and one synthetic derivative (5,6-dichlorogramine) for their effect on P. parvum growth. All...
Earthquake magnitude distributions on northern Caribbean faults from combinatorial optimization models
Eric L. Geist, Uri S. ten Brink
2021, JGR Solid Earth (126)
On-fault earthquake magnitude distributions are calculated for northern Caribbean faults using estimates of fault slip and regional seismicity parameters. Integer programming, a combinatorial optimization method, is used to determine the optimal spatial arrangement of earthquakes sampled from a truncated Gutenberg-Richter distribution that minimizes the global misfit in...
Assessment of variation in the detection and prevalence of blood parasites among sympatrically breeding geese in western Alaska, USA
Raymond M. Buchheit, Joel Schmutz, John A. Reed, Brian D. Uher-Koch, Andrew M. Ramey
2021, Journal of Wildlife Diseases (57) 799-807
Haemosporidian parasites may impact avian health and are subject to shifts in distribution and abundance with changing ecologic conditions. Therefore, understanding variation in parasite prevalence is important for evaluating biologically meaningful changes in infection patterns and associated population level impacts. Previous research in western Alaska, US, indicated a possible increase...
A new analysis of caldera unrest through the integration of geophysical data and FEM modeling: The Long Valley caldera case study
Fabio Pulvirenti, Francesca Silverii, Maurizio Battaglia
2021, Remote Sensing (13)
The Long Valley Caldera, located at the eastern edge of the Sierra Nevada range in California, has been in a state of unrest since the late 1970s. Seismic, gravity and geodetic data strongly suggest that the source of unrest is an intrusion beneath the caldera resurgent dome....
Past, present, and future of Mars Polar Science: Outcomes and outlook from the 7th International Conference on Mars Polar Science and Exploration
Patricio Becerra, Isaac B. Smith, Shannon M Hibbard, Chimira Andres, Jonathan Bapst, Ali Bramson, Peter Buhler, Andrea Coronato, Serina Diniega, Jeremy Emmett, Anna Grau Galofre, Clemence Herny, Melinda Kahre, J. Paul Knightly, Stefano Nerozzi, Alyssa Pascuzzo, Ganna Portyankina, Jorge Rabassa, Leslie Tamppari, Timothy N. Titus, Jennifer L Whitten, Zurine Yoldi
2021, The Planetary Science Journal (2)
Mars Polar Science is a subfield of Mars science that encompasses all studies of the cryosphere of Mars and its interaction with the Martian environment. Every 4 yr, the community of scientists dedicated to this subfield meets to discuss new findings and debate open issues in the...
Differential landscape use by forest owls two years after a mixed-severity wildfire
Leila S. Duchac, Damon B. Lesmeister, Katie M. Dugger, Raymond J. Davis
2021, Ecosphere (12)
Owls are important avian predators in forested systems, but little is known about landscape use by most forest-adapted owl species in environments impacted by mixed-severity wildfire. To better understand species-specific patterns of post-wildfire landscape use within an owl guild, we used passive acoustic monitoring using autonomous recording units. The technology...
Spatio-temporal analysis of hypoxia in the Central Basin of Lake Erie of North America
Wenzhao Xu, Paris D. Collingsworth, Richard Kraus, Barbara Minsker
2021, Water Resources Research
We develop a spatio-temporal geostatistical interpolation framework to estimate hypoxia extent (dissolved oxygen [DO] concentrations below 2 mg/L) with data from a network of DO loggers. The framework uses empirical orthogonal functions and Bayesian kriging to identify the spatially varying temporal pattern and estimate the distribution of hypoxia, including estimation uncertainty....
Patch utilization and flower visitations by wild bees in a honey bee-dominated, grassland landscape
Clint Otto, Larissa L. Bailey, Autumn H. Smart
2021, Ecology and Evolution (11) 14888-14904
Understanding habitat needs and patch utilization of wild and managed bees has been identified as a national research priority in the United States. We used occupancy models to investigate patterns of bee use across 1030 transects spanning a gradient of floral resource abundance and richness and distance from apiaries in...
Impact of precipitation and increasing temperatures on drought trends in eastern Africa
Sarah F. Kew, Sjoukje Y. Philip, Mathias Hauser, Michael Hobbins, Niko Wanders, Ted Veldkamp, Gert von Oldenburgh, Karin van der Wiel, Ted I. E. Veldkamp, Joyce Kimutai, Chris Funk, Friederike Otto
2021, Earth Systems Science Dynamics (12) 17-35
In eastern Africa droughts can cause crop failure and lead to food insecurity. With increasing temperatures, there is an a priori assumption that droughts are becoming more severe. However, the link between droughts and climate change is not sufficiently understood. Here we investigate trends in long-term agricultural drought and...
Acute oral toxicity and tissue residues of saxitoxin in the mallard (Anas platyrhynchos)
Robert J. Dusek, Matthew M. Smith, Caroline R. Van Hemert, Valerie I. Shearn-Bochsler, Sherwood Hall, Clark D. Ridge, Ransome Hardison, Robert Kaler, Barbara L. Bodenstein, Erik K. Hofmeister, Jeffrey S. Hall
2021, Harmful Algae (109)
Since 2014, widespread, annual mortality events involving multiple species of seabirds have occurred in the Gulf of Alaska, Bering Sea, and Chukchi Sea. Among these die-offs, emaciation was a common finding with starvation often identified as the cause of death. However, saxitoxin...
Lessons learned from development of natural capital accounts in the United States and European Union
Kenneth J. Bagstad, Jane Carter Ingram, Carl D. Shapiro, Alessandra La Notte, Joachim Maes, Sara Vallecillo, Clyde F. Casey, Pierre D. Glynn, Mehdi Heris, Justin A. Johnson, Chris Lauer, John Matuszak, Kirsten L. L. Oleson, Stephen M. Posner, Charles Rhodes, Brian Voigt
2021, Ecosystem Services (52)
The United States and European Union (EU) face common challenges in managing natural capital and balancing conservation and resource use with consumption of other forms of capital. This paper synthesizes findings from 11 individual application papers from a special issue of Ecosystem...
Near-field receiving-water monitoring of trace metals and a benthic community near the Palo Alto Regional Water Quality Control Plant in south San Francisco Bay, California—2019
Daniel J. Cain, Marie Noele Croteau, Janet K. Thompson, Francis Parchaso, A. Robin Stewart, Kelly H. Shrader, Emily L. Zierdt Smith, Samuel N. Luoma
2021, Open-File Report 2021-1079
Trace-metal concentrations in sediment and in the clam Limecola petalum (formerly reported as Macoma balthica and M. petalum), clam reproductive activity, and benthic macroinvertebrate community structure were investigated in a mudflat 1 kilometer south of the discharge of the Palo Alto Regional Water Quality Control Plant (PARWQCP) in south San...
The climate envelope of Alaska’s northern treelines: Implications for controlling factors and future treeline advance
Colin T. Maher, Roman J. Dial, Neal J. Pastick, Rebecca E. Hewitt, M. Torre Jorgenson, Patrick F. Sullivan
2021, Ecography (44) 1710-1722
Understanding the key mechanisms that control northern treelines is important to accurately predict biome shifts and terrestrial feedbacks to climate. At a global scale, it has long been observed that elevational and latitudinal treelines occur at similar mean growing season air temperature (GSAT) isotherms, inspiring the growth limitation hypothesis (GLH)...
