Metabolic rhythms in flowing waters: An approach for classifying river productivity regimes
Philip Savoy, Emily S. Bernhardt, Alison P. Appling, James B. Heffernan, Edward G. Stets, Jordan S. Read, Judson Harvey
2019, Limnology and Oceanography (64) 1835-1851
Although seasonal patterns of ecosystem productivity have been extensively described and analyzed with respect to their primary forcings in terrestrial and marine systems, comparatively little is known about these same processes in rivers. However, it is now possible to perform a large‐scale synthesis on the patterns and drivers of river...
A hierarchical Bayesian approach for handling missing classification data
Alison C. Ketz, Therese L. Johnson, Mevin Hooten, N. Thompson Hobbs
2019, Ecology and Evolution (9) 3130-3140
Ecologists use classifications of individuals in categories to understand composition of populations and communities. These categories might be defined by demographics, functional traits, or species. Assignment of categories is often imperfect, but frequently treated as observations without error. When individuals are observed but not classified, these “partial” observations must...
Practical tips to establish an actionable science portfolio for climate adaptation
Gustavo A. Bisbal
2019, Science and Public Policy (46) 148-153
The delivery of climate adaptation science products and services to inform resource management decisions—otherwise known as actionable climate adaptation science—is the primary driver and intended outcome of the science portfolios administered within the Department of the Interior's Climate Adaptation Science Center (CASC) network in the USA. This commitment hinges on...
Hillslope hydrology in global change research and earth system modeling
Ying Fan, Martyn Clark, David M. Lawrence, Sean Swenson, L. E. Band, S. L. Brantley, P. D. Brooks, W. E. Dietrich, A. Flores, G. Grant, J. W. Kirchner, D. S. Mackay, J.J. McDonnell, Paul C. D. Milly, P. L. Sullivan, C. Tague, H. Ajami, N. W. Chaney, A. Hartmann, P. Hazenberg, J. McNamara, J. Pelletier, J. Perket, E. Rouholahnejad-Freund, T. Wagener, X. Zeng, E. Beighley, J. Buzan, M. Huang, B. Livneh, B. P. Mohanty, B. Nijssen, M. Safeeq, C. Shen, W. van Verseveld, J. Volk, D. Yamazaki
2019, Water Resources Research (55) 1737-1772
Earth System Models (ESMs) are essential tools for understanding and predicting global change, but they cannot explicitly resolve hillslope‐scale terrain structures that fundamentally organize water, energy, and biogeochemical stores and fluxes at subgrid scales. Here we bring together hydrologists, Critical Zone scientists, and ESM developers, to explore how hillslope structures...
Prediction of ice‐free conditions for a perennially ice‐covered Antarctic lake
Maciej K. Obryk, P. T. Doran, J. C. Priscu
2019, Journal of Geophysical Research F: Earth Surface (124) 686-694
Although perennially ice‐covered Antarctic lakes have experienced variable ice thicknesses over the past several decades, future ice thickness trends and associated aquatic biological responses under projected global warming remain unknown. Heat stored in the water column in chemically stratified Antarctic lakes that have middepth temperature maxima can significantly influence the...
The black brant population is declining based on mark recapture
James S. Sedinger, Thomas V. Riecke, Alan G. Leach, David H. Ward
2019, Journal of Wildlife Management (83) 627-637
Annual survival and recruitment in black brant (Branta bernicla nigricans) have declined since the 1990s, yet aerial surveys of the global population have been stable or even increasing over the past decade. We used a combination of a Lincoln estimator based on harvest information and band recoveries, and marked‐unmarked ratios...
Geochemically distinct oil families in the onshore and offshore Santa Maria basins, California
Kenneth E. Peters, Paul G. Lillis, Thomas Lorenson, J. E. Zumberge
2019, AAPG Bulletin (103) 243-271
The purpose of this work is to identify genetic affinities among 48 crude oil samples from the onshore and offshore Santa Maria basins. A total of 21 source-related biomarker and stable carbon isotope ratios among the samples were assessed to assure that they were unaffected by secondary processes. Chemometric analysis...
Bioprocessed soybean meal replacement of fish meal in rainbow trout (Oncorhynchus mykiss) diets
Jill M. Voorhees, Steven R. Chipps, Michael Barnes, Pedro Gonzalez-Redondo
2019, Cogent Food & Agriculture (5)
This 125-day experiment evaluated the growth of adult rainbow trout (Oncorhynchus mykiss) fed one of three isonitrogenous and isocaloric diets (46% protein, 16% lipid). Fish meal was the primary protein source for the reference diet, which was compared to two other diets where bioprocessed soybean meal replaced 60% or 80%...
Mapping a keystone shrub species, huckleberry (Vaccinium membranaceum), using seasonal colour change in the Rocky Mountains
Carolyn R. Shores, Nathaniel Mikle, Tabitha A. Graves
2019, International Journal of Remote Sensing (40) 5695-5715
Black huckleberries (Vaccinium membranaceum) provide a critical food resource to many wildlife species, including apex omnivores such as the grizzly bear (Ursus arctos), and play an important socioeconomic role for many communities in western North America, especially indigenous peoples. Remote sensing imagery offers the potential for accurate landscape-level mapping of...
Long-term nitrogen addition shifts the soil nematode community to bacterivore-dominated and reduces its ecological maturity in a subalpine forest
E. Ashley Shaw, Claudia M. Boot, John C. Moore, Diana H. Wall, Jill Baron
2019, Soil Biology and Biochemistry (130) 177-184
Nitrogen deposition from anthropogenic sources is a global problem that reaches even the most remote ecosystems. Responses belowground vary by ecosystem, and have feedbacks to geochemical processes, including carbon storage. A long-term nitrogen addition study in a subalpine forest has shown carbon loss over time, atypical for a forest ecosystem. Loss of microbial biomass is likely linked to...
Linking fire and the United Nations Sustainable Development Goals
Deborah A. Martin
2019, Science of the Total Environment (662) 547-558
Fire is a ubiquitous natural disturbance that affects 3–4% of the Earth's surface each year. It is a tool used by humans for land clearing and burning of agricultural wastes. The United Nations Sustainable Development Goals (SDGs) do not explicitly mention fire, though many of the Goals are affected by the beneficial and adverse consequences of...
Disease‐structured N‐mixture models: A practical guide to model disease dynamics using count data
Graziella V. DiRenzo, Christian Che-Castaldo, Sarah P. Saunders, Evan H. Campbell Grant, Elise F. Zipkin
2019, Ecology and Evolution (9) 899-909
Obtaining inferences on disease dynamics (e.g., host population size, pathogen prevalence, transmission rate, host survival probability) typically requires marking and tracking individuals over time. While multistate mark–recapture models can produce high‐quality inference, these techniques are difficult to employ at large spatial and long temporal scales or in small remnant host...
Using motion-activated cameras to study diet and productivity of cliff-nesting Golden Eagles
Jordan Harrison, Michael N. Kochert, Benjamin P. Pauli, Julie A. Heath
2019, Journal of Raptor Research (53) 26-37
Studies of cliff-nesting raptors can be challenging because direct observations of nest contents are difficult. Our goals were to develop a protocol for installing motionactivated trail cameras at Golden Eagle (Aquila chrysaetos) nests to record diet information and productivity, and to estimate prey detection probability using different diet study methods. In 2014 and 2015,...
Slough evolution and legacy mercury remobilization induced by wetland restoration in South San Francisco Bay
Amy C. Foxgrover, Mark C. Marvin-DiPasquale, Bruce E. Jaffe, Theresa A. Fregoso
2019, Estuarine, Coastal and Shelf Science (220) 1-12
Coastal wetlands have a long history of degradation and destruction due to human development. Now recognized as one of the most productive ecosystems in the world, substantial efforts are being made to restore this critical habitat. While wetland restoration efforts are generally viewed as beneficial in terms of providing wildlife...
Oxygen isotopic investigation of silicic magmatism in the Stillwater caldera complex, Nevada: Generation of large-volume, low-δ18O rhyolitic tuffs and assessment of their regional context in the Great Basin of the western United States
Kathryn E. Watts, David A. John, Joseph P. Colgan, Christopher D. Henry, Ilya N. Bindeman, John W. Valley
2019, GSA Bulletin (131) 1133-1156
Successive caldera-forming eruptions from ca. 30 to 25 Ma generated a large nested caldera complex in western Nevada that was subsequently dissected by Basin and Range extension, providing extraordinary cross-sectional views through diverse volcanic and plutonic rocks. A high-resolution oxygen isotopic study was conducted on units that represent all major...
Physical mechanisms influencing localized patterns of temperature variability and coral bleaching within a system of reef atolls
Rebecca H. Green, Ryan J. Lowe, Mark L. Buckley, Taryn M. Lopez, James Gilmour
2019, Coral Reefs (38) 759-771
Interactions between oceanic and atmospheric processes within coral reefs can significantly alter local-scale (< km) water temperatures, and consequently drive variations in heat stress and bleaching severity. The Scott Reef atoll system was one of many reefs affected by the 2015–2016 mass coral bleaching event across tropical Australia, and specifically experienced...
Improved automated detection of subpixel-scale inundation – Revised Dynamic Surface Water Extent (DSWE) partial surface water tests
John Jones
2019, Remote Sensing (11) 1-26
In order to produce useful hydrologic and aquatic habitat data from the Landsat system, the U.S. Geological Survey has developed the “Dynamic Surface Water Extent” (DSWE) Landsat Science Product. DSWE will provide long-term, high-temporal resolution data on variations in inundation extent. The model used to generate DSWE is composed of...
Estimating uncertainty of North American landbird population sizes
Jessica C. Stanton, Peter J. Blancher, Kenneth V. Rosenberg, Arvind O. Panjabi, Wayne E. Thogmartin
2019, Avian Conservation and Ecology (14)
An important metric for many aspects of species conservation planning and risk assessment is an estimate of total population size. For landbirds breeding in North America, Partners in Flight (PIF) generates global, continental, and regional population size estimates. These estimates are an important component of the PIF species assessment process,...
Assemblage structure, vertical distributions and stable‐isotope compositions of anguilliform leptocephali in the Gulf of Mexico
Andrea M. Quattrini, Jennifer McClain Counts, Stephen J. Artabane, Adela Roa-Varon, Tara C. McIver, Michael Rhode, Steve W. Ross
2019, Journal of Fish Biology (94) 621-647
In August 2007, October 2008 and September–October 2010, 241 Tucker trawl and plankton net tows were conducted at the surface to depths of 1377 m at six locations in the northern and eastern Gulf of Mexico (GOM) to document leptocephalus diversity and determine how assemblage structure, larval size, abundance and isotopic...
The effects of topographic surveying technique and data resolution on the detection and interpretation of geomorphic change
Alan Kasprak, Nathaniel D. Bransky, Joel B. Sankey, Joshua Caster, Temulen T. Sankey
2019, Geomorphology (333) 1-15
Change detection of high resolution topographic data is commonly used in river valleys to quantify reach- and site-scale sediment budgets by estimating the erosion/deposition volume, and to interpret the geomorphic processes driving erosion and deposition. Field survey data are typically collected as point clouds that are often converted to gridded raster datasets and the ultimate choice of grid...
Effects of urban multi-stressors on three stream biotic assemblages
Ian R. Waite, Mark D. Munn, Patrick W. Moran, Christopher P. Konrad, Lisa H. Nowell, Michael R. Meador, Peter C. Van Metre, Daren M. Carlisle
2019, Science of the Total Environment (660) 1472-1485
During 2014, the U.S. Geological Survey (USGS) National Water-Quality Assessment(NAWQA) project assessed stream quality in 75 streams across an urban disturbance gradient within the Piedmont ecoregion of southeastern United States. Our objectives were to identify primary instream stressors affecting algal, macroinvertebrate and fish assemblages in wadeable streams. Biotic communities were surveyed once at each site,...
Postglacial faulting near Crater Lake, Oregon, and its possible association with the Mazama caldera-forming eruption
Charles R. Bacon, Joel E. Robinson
2019, Geological Society of America Bulletin (131) 1440-1458
Volcanoes of subduction-related magmatic arcs occur in a variety of crustal tectonic regimes, including where active faults indicate arc-normal extension. The Cascades arc volcano Mount Mazama overlaps on its west an ∼10-km-wide zone of ∼north-south–trending normal faults. A lidar (light detection and ranging) survey of Crater Lake National Park, reveals...
Marshes are the new beaches: Integrating sediment transport into restoration planning
Neil K. Ganju
2019, Estuaries and Coasts (42) 917-926
Recent coastal storms and associated recovery efforts have led to increased investment in nature-based coastal protection, including restoration of salt marshes and construction of living shorelines. In particular, many of these efforts focus on increasing vertical elevation through sediment nourishment, where sediment is removed from the tidal channel and placed...
A bibliometric profile of the Remote Sensing Open Access Journal published by MDPI between 2009 and 2018
YuYing Zhang, Prasad S. Thenkabail, Peng Wang
2019, Remote Sensing (11) 1-34
Remote Sensing Open Access Journal (RS OAJ) is an international leading journal in the field of remote sensing science and technology. It was first published in the year 2009 and is currently celebrating tenth year of publications. In this research, a bibliometric analysis of RS OAJ was conducted based on...
Opportunities and barriers for endangered species conservation using payments for ecosystem services
Aaron M. Lien, Colleen Ulibarri, Wendy Vanasco, George B. Ruyle, Scott A. Bonar, Laura Lopez-Hoffman
2019, Biological Conservation (232) 74-82
Endangered species laws seek to prevent extinction by outlawing actions that may cause harm or lead to extinction. In doing so, these laws are sometimes criticized for limiting management flexibility and subjecting landowners to regulatory burdens. One proposed solution to this challenge is development of payment for ecosystem service (PES) programs....
