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Filter Total Items: 917
Scale dependence of coral reef oases and their environmental correlates
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 correlates of sites categorized as “oases” (defined as sites with relativel
Authors
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
On the potential for remote observations of coastal morphodynamics from surf-cameras
Recreational surf-cameras (surfcams) are ubiquitous along many coastlines, and yet are a largely untapped source of coastal morphodynamic observations. Surfcams offer broad spatial coverage and flexibility in data collection, but a method to remotely acquire ground control points (GCPs) and initial camera parameter approximations is necessary to better leverage this existing infrastructure to make
Authors
Matthew P. Conlin, Peter N. Adams, Margaret Louise Palmsten
Predicted sea-level rise-driven biogeomorphological changes on Fire Island, New York: Implications for people and plovers
Forecasting biogeomorphological conditions for barrier islands is critical for informing sea-level rise (SLR) planning, including management of coastal development and ecosystems. We combined five probabilistic models to predict SLR-driven changes and their implications on Fire Island, New York, by 2050. We predicted barrier island biogeomorphological conditions, dynamic landcover response, piping
Authors
Sara Lynn Zeigler, Benjamin T. Gutierrez, Erika Lentz, Nathaniel Plant, Emily J. Sturdivant, Kara S. Doran
Spatially integrating microbiology and geochemistry to reveal complex environmental health issues: Anthrax in the contiguous United States
Maxent models were run using the B. anthracis presence data and/or the animal outbreak presence data. Models run using the animal outbreak data alone utilized two scales: the Outbreak State scale which included only states reporting animal anthrax outbreaks from 2001 to 2013 and the National scale which included all states in the contiguous United States. Three iterations of the environmental data
Authors
Erin Silvestri, Stephen Douglas, Vicky Luna, C.A.O. Jean-Babtiste, D. Harbin, Laura Hempel, Timothy Boe, Tonya Nichols, Dale W. Griffin
Chandeleur Islands to Breton Island bathymetric and topographic datasets and operational sediment budget development: Methodology and analysis report
This study is part of the Coastal Protection and Restoration Authority (CPRA) Louisiana Barrier Island Comprehensive Monitoring (BICM) program. The goal of the BICM program is to provide long-term data on the barrier islands of Louisiana for monitoring change and assisting in coastal management. The BICM program uses historical data and acquires new data to map and monitor shoreline position, sedi
Authors
James G. Flocks, Arnell S. Forde, Julie Bernier
Chenier Plain region bathymetric and topographic datasets: Methodology report
The goal of the Louisiana Barrier Island Comprehensive Monitoring (BICM) program is to provide long-term data on coastal Louisiana for monitoring change and assisting in coastal management. This study (carried out under Coastal Protection and Restoration Authority contract number 2000339324, BICM2—Chenier TopoBathy DEM) builds upon the previous BICM physical assessment of the Chenier Plain region
Authors
James G. Flocks, Arnell S. Forde, Julie Bernier
Contrasting Common Era climate and hydrology sensitivities from paired lake sediment dinosterol hydrogen isotope records in the South Pacific Convergence Zone
Hydroclimate on ‘Uvea (Wallis et Futuna) is controlled by rainfall associated with the South Pacific Convergence Zone (SPCZ), the southern hemisphere's largest precipitation feature. To extend the short observational precipitation record, the hydrogen isotopic composition of the algal lipid biomarker dinosterol (δ2Hdinosterol) was measured in sediment cores from two volcanic crater lakes on ‘Uvea.
Authors
Ashley E. Maloney, Julie N. Richey, Daniel B. Nelson, Samantha N Hing, David A. Sear, Jonathan D. Hassall, Peter G. Langdon, Ursula Sichrowsky, Robert Schabetsberger, Atoloto Malau, Jean-Yves Meyer, Ian W. Croudace, Julian P. Sachs
Elevations of mangrove forests of Pohnpei, Micronesia
Mangrove surface elevation is the crux of mangrove vulnerability to sea level rise. Local topography influences critical periods of tidal inundation that govern distributions of mangrove species and dictates future distributions. This study surveyed ground surface elevations of the extensive mangroves of Pohnpei, Federated States of Micronesia, integrating four survey technologies to solve issues
Authors
Joanna C Ellison, Kevin Buffington, Karen M. Thorne, Dean B. Gesch, Jeffrey Irwin, Jeffrey J. Danielson
Atlantic circulation change still uncertain
Deep oceanic overturning circulation in the Atlantic (Atlantic Meridional Overturning Circulation (AMOC)) is projected to decrease in the future in response to anthropogenic warming. Caesar et al.1 argue that an AMOC slowdown started in the nineteenth century and intensified during the mid-twentieth century. Although the argument and selected evidence proposed have some merits, we find that their
Authors
K. Halimeda Kilbourne, Alan D. Wanamaker, Paola Moffa-Sanchez, David J. Reynolds, Daniel E. Amrhein, Paul G. Butler, Marlos Goes, Malte Jansen, Christopher M. Little, Madelyn Jean Mette, Eduardo Moreno-Chamarro, Pablo Ortega, Bette L. Otto-Bliesner, Thomas Rossby, James Scourse, Nina M. Whitney
A statistical framework for integrating nonparametric proxy distributions into geological reconstructions of relative sea level
Robust, proxy-based reconstructions of relative sea-level (RSL) change are critical to distinguishing the processes that drive spatial and temporal sea-level variability. The relationships between individual proxies and RSL can be complex and are often poorly represented by traditional methods that assume Gaussian likelihood distributions. We develop a new statistical framework to estimate past RS
Authors
Erica L. Ashe, Nicole S. Khan, Lauren Toth, Andrea Dutton, Robert E. Kopp
Smoothed Particle Hydrodynamics simulations of reef surf zone processes driven by plunging irregular waves
As waves interact with the slopes of coral reefs and other steep bathymetry profiles, plunging breaking usually occurs where the free surface overturns and violent water motion is triggered. Resolving these surf zone processes pose significant challenges for conventional mesh-based hydrodynamic models, due to the rapidly-deforming nature of the free surface and associated flows. Yet the accurate p
Authors
Ryan J. Lowe, C. Altomare, Mark L. Buckley, Renan F. da Silva, Jeff E. Hansen, Dirk P. Rijnsdorp, J.M. Domínguez, A.J.C. Crespo
Combining tangential flow filtration and size fractionation of mesocosm water as a method for the investigation of waterborne coral diseases
The causative agents of most coral diseases today remain unknown, complicating disease response and restoration efforts. Pathogen identifications can be hampered by complex microbial communities naturally associated with corals and seawater, which create complicating “background noise” that can potentially obscure a pathogen’s signal. Here, we outline an approach to investigate waterborne coral di
Authors
James S. Evans, Valerie J. Paul, Blake Ushijima, Christina A. Kellogg