A food web modeling assessment of Asian Carp impacts in the Middle and Upper Mississippi River, USA
Nicholas W. Kramer, Quinton E. Phelps, Clay Pierce, Michael E. Colvin
2019, Food Webs (21)
The invasion of non-native fishes has caused a great detriment to many of our native fishes. Since the introduction of invasive carps, such as Silver, Bighead, Common and Grass Carp, managers and researcher have been struggling to remove these species while also hypothesizing the detriment of further invasion. This study developed...
Invertebrate prey contributions to juvenile Coho Salmon diet from riparian habitats along three Alaska streams: Implications for environmental change
Jess Grunblatt, Benjamin E. Meyer, Mark S. Wipfli
2019, Journal of Freshwater Ecology (34) 617-631
Stream fish rely on a mix of terrestrial and aquatic prey sources. While the importance of terrestrial invertebrates as a food source for stream fish is well documented, the role of aquatic insects that emerge from the stream as winged adult insects (aquatic winged adults) and return to the stream...
Flood-inundation maps for a 23-mile reach of the Medina River at Bandera, Texas, 2018
Namjeong Choi, Frank L. Engel
2019, Scientific Investigations Report 2019-5067
In 2018, the U.S. Geological Survey (USGS), in cooperation with the Bandera County River Authority and Groundwater District and the Texas Water Development Board, studied floods through the period of record to create a library of flood-inundation maps for the Medina River at Bandera, Texas. Digital flood-inundation maps for a...
Flood warning toolset for the Medina River in Bandera County, Texas
Frank L. Engel, Namjeong Choi
2019, Fact Sheet 2019-3043
OverviewFloods are the most common natural disaster in the United States. The Medina River in Bandera County, Texas, is in the Edwards Plateau, where high-intensity rain rates and steep terrain frequently contribute to severe flash flooding capable of causing loss of life and property. For example, the July...
Evaluating k-nearest neighbor (kNN) imputation models for species-level aboveground forest biomass mapping in northeast China
Yuanyuan Fu, Hong S He, Todd Hawbaker, Paul D. Henne, Zhiliang Zhu, David R. Larsen
2019, Remote Sensing (17) 1-20
Quantifying spatially explicit or pixel-level aboveground forest biomass (AFB) across large regions is critical for measuring forest carbon sequestration capacity, assessing forest carbon balance, and revealing changes in the structure and function of forest ecosystems. When AFB is measured at the species level using widely available remote sensing data, regional...
Acoustic tag retention rate varies between juvenile green and hawksbill sea turtles
Thomas Selby, Brian Smith, Michael Cherkiss, Andrew Crowder, Zandy Hillis-Starr, Clayton Pollock, Kristen Hart
2019, Animal Biotelemetry (7)
Background Biotelemetry has become a key tool for studying marine animals in the last decade, and a wide range of electronic tags are now available for answering a range of research questions. However, comparatively, less attention has been given to attachment methods for these tags and the implications of tag retention...
One hundred and sixty years of Grand Canyon geological mapping
Karl Karlstrom, Laura Crossey, Peter W. Huntoon, George Billingsley, Michael Timmons, Ryan S. Crow
2019, Journal of Arizona History (60) 655-674
No abstract available. ...
Strategic conservation for lesser prairie-chickens among landscapes of varying anthropogenic influence
Daniel S. Sullins, David A. Haukos, Joseph M. Lautenbach, Jonathan Lautenbach, Samantha G. Robinson, Mindy B. Rice, Brett K. Sandercock, John D. Kraft, Reid T. Plumb, Jonathan H. Reitz, J. M. Shawn Hutchinson, Christian A. Hagen
2019, Biological Conservation (238)
For millennia grasslands have provided a myriad of ecosystem services and have been coupled with human resource use. The loss of 46% of grasslands worldwide necessitates the need for conservation that is spatially, temporally, and socioeconomically strategic. In the Southern Great Plains of the United States, conversion of native grasslands...
Influence of climate change and postdelisting management on long-term population viability of the conservation-reliant Kirtland's Warbler
Donald J. Brown, Deahn M. Donner, Christine Ribic, Carol I. Bocetti
2019, Ecology and Evolution (9) 10263-10276
Rapid global climate change is resulting in novel abiotic and biotic conditions and interactions. Identifying management strategies that maximize probability of long-term persistence requires an understanding of the vulnerability of species to environmental changes. We sought to quantify the vulnerability of Kirtland's Warbler (Setophaga kirtlandii), a...
Balancing sampling intensity against spatial coverage for a community science monitoring programme
Emily L. Weiser, Jay E. Diffendorfer, Ralph Grundel, Laura Lopez Hoffman, Samuel Pecoraro, Darius J. Semmens, Wayne E. Thogmartin
2019, Journal of Applied Ecology (56) 2252-2263
Community science is an increasingly integral part of biodiversity research and monitoring, often achieving broad spatial and temporal coverage but lower sampling intensity than studies conducted by professional scientists. When designing a community‐science monitoring programme, careful assessment of sampling designs that could be both feasible and successful at meeting...
Measuring suspended sediment in sand-bedded rivers using down-looking acoustic doppler current profilers
Molly S. Wood, Ricardo N. Szupiany, Justin A. Boldt, Timothy D. Straub, Marian M. Domanski
2019, Conference Paper
The use of side-looking acoustic Doppler velocity meters (ADVMs) to estimate fluvial suspended-sediment concentrations (SSC) has become more operational by the U.S. Geological Survey in recent years; however, direct transfer of these techniques to down-looking acoustic Doppler current profilers (ADCPs) currently is not widely feasible. Key assumptions in the sidelooking ADVM...
The state of the world’s mangrove forests: Past, present, and future
Daniel A. Friess, Kerrylee Rogers, Catherine E. Lovelock, Ken Krauss, Stuart E. Hamilton, Shing Yip Lee, Richard Lucas, Jurgenne Primavera, Anusha Rajkaran, Suhua Shi
2019, Annual Review of Environment and Resources (44) 16-1-16.27
Intertidal mangrove forests are a dynamic ecosystem experiencing rapid changes in extent and habitat quality over geological history, today and into the future. Climate and sea level have drastically altered mangrove distribution since their appearance in the geological record ∼75 million years ago (Mya), through to the Holocene. In contrast,...
US Costal Research Program: Fostering academic research
Julie Dean Rosati, Nicole Elko, Hilary F Stockdon, Jeff Lillycrop, Mary Cialone
2019, Conference Paper, Coastal Sediments 2019
The US Coastal Research Program (USCRP) was founded in 2016 through a grassroots initiative of scientists, researchers, and practitioners to address nearshore coastal research priorities of greatest relevance to coastal communities and build a skilled US coastal workforce. The USCRP supports academic research to address challenges identified through thematic workshops...
US Costal Research Program: Building a research community to support coastal stakeholders
Hilary F Stockdon, L. Brandt, M. Cialone, N. Elko, John W. Haines, J. Lillycrop, J. Rosati
2019, Conference Paper, Coastal Sediments 2019 Proceedings
The U.S. Coastal Research Program (USCRP) was created to develop, coordinate, and enable a National science plan to address growing needs of coastal communities. Researchers from federal agencies, academia, industry, and non-governmental organizations work together to identify priorities that support coastal stakeholders in activities such as emergency...
The hydrologic benefits of wetland and prairie restoration in western Minnesota—Lessons learned at the Glacial Ridge National Wildlife Refuge, 2002–15
Timothy K. Cowdery, Catherine A. Christenson, Jeffrey R. Ziegeweid
2019, Scientific Investigations Report 2019-5041
Conversion of agricultural lands to wetlands and native prairie is widely viewed as beneficial because it can restore natural ecological and hydrologic functions. Some of these functions, such as reduced peak flows and improved water quality, are often attributed to restoration; however, such benefits have not been quantified at a...
An evaluation of sedatives for use in transport of juvenile endangered fishes in plastic bags
Laura A. Tennant, Ben M. Vaage, David L. Ward
2019, Journal of Fish and Wildlife Management (10) 532-543
Trucks and aircraft typically transport rare or endangered fishes in large unsealed tanks containing large volumes of water (typically hundreds of liters) during conservation efforts. Ornamental fishes, however, are commonly sent by mail in small sealed plastic bags filled with oxygen, minimal water, and a small amount of sedative to...
Temporally adaptive acoustic sampling to maximize detection across a suite of focal wildlife species
Cathleen Balantic, Therese M. Donovan
2019, Ecology and Evolution (9) 10582-10600
Acoustic recordings of the environment can produce species presence–absence data for characterizing populations of sound-producing wildlife over multiple spatial scales. If a species is present at a site but does not vocalize during a scheduled audio recording survey, researchers may incorrectly conclude that the species is absent (“false negative”)....
Tsunamis: Stochastic models of generation, propagation, and occurrence
Eric L. Geist, David Oglesby, Kenny Ryan
2019, Book chapter, Encyclopedia of complexity and systems science
The devastating consequences of the 2004 Indian Ocean and 2011 Tohoku-oki tsunamis have led to increased research into many different aspects of the tsunami phenomenon. In this paper, we review research related to the observed complexity and uncertainty associated with tsunami generation, propagation, and occurrence described and analyzed using...
Thermal variability drives synchronicity of an aquatic insect resource pulse
Heidi E. Anderson, Lindsey K. Alberson, David Walters
2019, Ecosphere (10)
Spatial heterogeneity in environmental conditions can prolong food availability by desynchronizing the timing of ephemeral, high‐magnitude resource pulses. Spatial patterns of water temperature are highly variable among rivers as determined by both natural and anthropogenic features, but the influence of this variability on freshwater resource pulse phenology is poorly documented....
Estrogen receptor 1 expression and methylation of Esr1 promoter in mouse fetal prostate mesenchymal cells induced by gestational exposure to bisphenol A or ethinylestradiol
Ramji K. Bhandari, Julia A. Taylor, Jennifer Sommerfeld-Sager, Donald E. Tillitt, William A. Ricke, Frederick S. vom Saal
2019, Environmental Epigenetics (5)
Fetal/neonatal environmental estrogen exposures alter developmental programing of the prostate gland causing onset of diseases later in life. We have previously shown in vitro that exposures to 17β-estradiol (E2) and the endocrine disrupting chemical bisphenol A, at concentrations relevant to human exposure, cause an elevation of estrogen receptor α (Esr1) mRNA in...
Paleoclimate of the subtropical Andes during the latest Miocene, Lauca Basin, Chile
Melina Feitl, Andrea Kern, Amanda Jones, Sherilyn Fritz, Paul E. Baker, Joeckel . R.M., Wout Salenbien, Debra A. Willard
2019, Palaeogeography, Palaeoclimatology, Palaeoecology (534)
Uplift of the Andean Cordillera during the Miocene and Pliocene produced large-scale changes in regional atmospheric circulation that impacted local ecosystems. The Lauca Basin (northern Chilean Altiplano) contains variably fluvial and lacustrine sedimentary sequences spanning the interval from 8.7 to 2.3 Ma....
Enhancing reproductive assessments of the Florida manatee Trichechus manatus latirostris by establishing optimal time period and inhibin B baseline concentrations
Dana L Wetzel, John Elliot Reynolds, Robert Bonde, Ryan W Schloesser, Leslie Schwierzke-Wade, William E Roudebush
2019, Endangered Species Research (39) 283-292
The Florida manatee Trichechus manatus latirostris occupies coastal and riverine habitats that may influence the species’ endogenous biological rhythms, including its reproductive potential. Inhibin B provides a biomarker of gonadal function and reproductive potential in humans and other eutherian mammals. This study examined the influence of size, sex, and time of year...
Mechanisms of methane hydrate formation in geological systems
Kehua You, Peter B. Flemings, Alberto Malinverno, Timothy Collett, Kristopher Darnell
2019, Reviews of Geophysics (57) 1146-1196
Natural gas hydrates are ice-like mixtures of gas (mostly methane) and water that are widely found in sediments along the world’s continental margins and within and beneath permafrost in a near-surface depth interval where the pressure is sufficiently high and temperature sufficiently low for gas hydrate to be stable. Beneath...
Carbon chemistry of intact versus chronically drained peatlands in the southeastern USA
Craig A. Stricker, Judith Z. Drexler, Kevin A. Thorn, Jamie A. Duberstein, Sam Rossman
2019, Journal of Geophysical Research: Biogeosciences (124) 2751-2767
The Great Dismal Swamp (GDS) is a large temperate swamp in Virginia/North Carolina with peat soils historically resistant to microbial decomposition. However, this peatland has been subject to ~200 years of disturbance during which extensive drainage, fire suppression, and wide-spread logging have increased decomposition and dramatically decreased the distribution of...
Small ponds in headwater catchments are a dominant influence on regional nutrient and sediment budgets
Noah Schmadel, Judson Harvey, Gregory E. Schwarz, Richard Alexander, Jesus D. Gomez-Velez, Durelle Scott, Scott W. Ator
2019, Geophysical Research Letters (46) 9669-9677
Small ponds—farm ponds, detention ponds, or impoundments below 0.01 km2—serve important human needs throughout most large river basins. Yet the role of small ponds in regional nutrient and sediment budgets is essentially unknown, currently making it impossible to evaluate their management potential to achieve water quality objectives. Here we used...
