Conference Papers
Science Quality and Integrity
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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
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Acadia National Park climate change scenario planning workshop summary
This report summarizes outcomes from a two-day scenario planning workshop for Acadia National Park, Maine. The primary objective of the workshop was to help Acadia senior leadership make management and planning decisions based on up-to-date climate science and assessments of future uncertainty. The workshop was also designed as a training program, helping build participants' capabilities to develo
Authors
Jonathan Star, Nicholas Fisichelli, Alexander Bryan, Amanda Babson, Rebecca Cole-Will, Abraham J. Miller-Rushing
A practical guide to the use of major elements, trace elements, and isotopes in compositional data analysis: Applications for deep formation brine geochemistry
In the geosciences, isotopic ratios and trace element concentrations are often used along with major element concentrations to help determine sources of and processes affecting geochemical variation. Compositional Data Analysis (CoDA) is a set of tools, generally attuned to major element data, concerned with the proper statistical treatment and removal of spurious correlations from compositional d
Authors
Madalyn S. Blondes, Mark A. Engle, Nicholas Geboy
Estimating the risks for adverse effects of total phosphorus in receiving streams with the Stochastic Empirical Loading and Dilution Model (SELDM)
Studies from North Carolina (NC) indicate that increasing concentrations of total phosphorus (TP) and other constituents are correlated to adverse effects on stream ecosystems as evidenced by differences in benthic macroinvertebrate populations in streams across the state. As a result, stringent in-stream criteria based on the Water Quality Assessed by Benthic macroinvertebrate health ratings (WQA
Authors
Gregory E. Granato, Susan C. Jones
Shoal basses: A clade of cryptic identity
Shoal basses are a cryptic clade composed of Micropterus spp. restricted to
the Apalachicola River system and three southeastern Atlantic slope river drainages in the southeastern United States. This reciprocally monophyletic clade includes the Shoal Bass M. cataractae (endemic to the Apalachicola River system), the Chattahoochee Bass M. chattahoochae, and two undescribed forms from the Altamaha,
Authors
Byron J. Freeman, Andrew T. Taylor, Kenneth J. Oswald, John Wares, Mary Freeman, Joseph M. Quattro, Jean K. Leitner
Coastal change from a massive sediment input: Dam removal, Elwha River, Washington, USA
The removal of two large dams on the Elwha River, Washington, provides an ideal opportunity to study coastal morphodynamics during increased sediment supply. The dam removal project exposed ~21 million cubic meters (~30 million tonnes) of sediment in the former reservoirs, and this sediment was allowed to erode by natural river processes. Elevated rates of sand and gravel sediment transport in the
Authors
Jonathan A. Warrick, Guy R. Gelfenbaum, Andrew W. Stevens, Ian M. Miller, George M. Kaminsky, Melissa M. Foley
Operational considerations for implementing regional sediment management plans in the northern Gulf of Mexico
Development of a comprehensive and stakeholder-driven Regional Sediment Management plan can provide the basis for long-term sustainable resource use and protection. This paper highlights three operational components that can positively influence sediment management at a regional scale, including (1) integration of an operational sediment budget, (2) development of a monitoring and adaptive managem
Authors
Steven G. Underwood, Syed M. Khalil, Mark R. Byrnes, Gregory D. Steyer, Richard C Raynie
Discovering loose group movement patterns from animal trajectories
The technical advances of positioning technologies enable us to track animal movements at finer spatial and temporal scales, and further help to discover a variety of complex interactive relationships. In this paper, considering the loose gathering characteristics of the real-life groups' members during the movements, we propose two kinds of loose group movement patterns and corresponding discover
Authors
Yuwei Wang, Ze Luo, Yan Xiong, Diann J. Prosser, Scott H. Newman, John Y. Takekawa, Baoping Yan
Dreissenid mussel research priorities workshop
Currently, dreissenid mussels have yet to be detected in the northwestern part of the United States and western Canada. Infestation of one of the jurisdictions within the mussel-free Pacific Northwest would likely have significant economic, societal and environmental implications for the entire region. Understanding the biology and environmental tolerances of dreissenid mussels, and effectiveness
Authors
Mark Sytsma, Stephen Phillips, Timothy D. Counihan
Applications of optical sensors for high-frequency water-quality monitoring and research
The recent commercial availability of in-situ optical sensors, together with new techniques for data collection and analysis, provides the opportunity to monitor a wide range of water-quality constituents over time scales during which environmental conditions actually change. Traditional approaches for data collection (daily to monthly discrete samples) are often limited by high sample collection,
Authors
Brian Pellerin
Dune management challenges on developed coasts
From October 26-28, 2015, nearly 100 members of the coastal management and research communities met in Kitty Hawk, NC, USA to bridge the apparent gap between the coastal dune research of scientists and engineers and the needs of coastal management practitioners. The workshop aimed to identify the challenges involved in building and managing dunes on developed coasts, assess the extent to which sci
Authors
Nicole A. Elko, Kate Brodie, Hilary F. Stockdon, Karl F. Nordstrom, Chris Houser, Kim McKenna, Laura Moore, Julie D. Rosati, Peter Ruggiero, Roberta Thuman, Ian J. Walker
Using hydrophones as a surrogate monitoring technique to detect temporal and spatial variability in bedload transport
Collecting physical bedload measurements is an expensive and time-consuming endeavor that rarely captures the spatial and temporal variability of sediment transport. Technological advances can improve monitoring of sediment transport by filling in temporal gaps between physical sampling periods. We have developed a low-cost hydrophone recording system designed to record the sediment-generated nois
Authors
Mathieu D. Marineau, J. Toby Minear, Scott A. Wright
Using maximum topology matching to explore differences in species distribution models
Species distribution models (SDM) are used to help understand what drives the distribution of various plant and animal species. These models are typically high dimensional scalar functions, where the dimensions of the domain correspond to predictor variables of the model algorithm. Understanding and exploring the differences between models help ecologists understand areas where their data or under
Authors
Jorge Poco, Harish Doraiswamy, Marian Talbert, Jeffrey Morisette, Claudio Silva