Nutritional status of honey bee (Apis mellifera L.) workers across an agricultural land-use gradient
Matthew Smart, Clint Otto, Jonathan G. Lundgren
2019, Scientific Reports (9)
Land use and habitat quality have emerged as critical factors influencing the health, productivity, and survival of honey bee colonies. However, characterization of the mechanistic relationship between differential land-use conditions and ultimate outcomes for honey bee colonies has been elusive. We assessed the physiological health of individual worker honey...
Soil aggregates as a source of dissolved organic carbon to streams: An experimental study on the effect of solution chemistry on water extractable carbon
Malayika M. Cincotta, Julia N. Perdrial, Aaron Shavitz, Arianna Libenson, Maxwell Landsman, Nicolas Perdrial, Jesse Armfield, Thomas Adler, James B. Shanley
2019, Frontiers in Environmental Science (7)
Over the past two decades, headwater streams of the northern hemisphere have shown increased amounts of dissolved organic carbon (DOC), coinciding with decreased acid deposition. The exact nature of the mechanistic link between precipitation composition and stream water DOC is still widely debated in the literature. We hypothesize that...
300,000 yr history of water-table fluctuations at Wind Cave, South Dakota, USA—Scale, timing, and groundwater mixing in the Madison Aquifer
James B. Paces, Margaret V. Palmer, Arthur N. Palmer, Andrew J. Long, Matthew P. Emmons
2019, GSA Bulletin (132) 1447-1468
Deposits of calcite coating the lower passages of Wind Cave in the southern Black Hills of South Dakota were precipitated under phreatic conditions. Data from samples associated with a new cave survey and hydrologic studies indicate that past water tables within Wind Cave reached a maximum height of 45 m...
Protracted multipulse emplacement of a post-resurgent pluton: The case of Platoro caldera complex (Southern Rocky Mountain volcanic field, Colorado)
Filip Tomek, Amy K. Gilmer, M. S. Petronis, Peter W. Lipman, M. S. Foucher
2019, Geochemistry, Geophysics, Geosystems (20) 5225-5250
Many eroded calderas expose associated postcollapse plutons, but detailed fieldwork‐supported studies have rarely focused on the internal structure that can contribute to understanding of emplacement dynamics. The Alamosa River monzonite pluton is a postcollapse intrusion at the Platoro caldera complex that erupted six large ignimbrites between 30.2 and 28.8 Ma in...
Phytoplankton community and algal toxicity at a recurring bloom in Sullivan Bay, Kabetogama Lake, Minnesota, USA
Victoria Christensen, Ryan P. Maki, Erin A. Stelzer, Jack E. Norland, Eakalak Khan
2019, Scientific Reports (9)
Kabetogama Lake in Voyageurs National Park, Minnesota, USA suffers from recurring late summer algal blooms that often contain toxin-producing cyanobacteria. Previous research identified the toxin microcystin in blooms, but we wanted to better understand how the algal and cyanobacterial community changed throughout an open water season and how changes in...
Updates to the Madison Lake (Minnesota) CE–QUAL–W2 water-quality model for assessing algal community dynamics
Erik A. Smith, Richard L. Kiesling
2019, Scientific Investigations Report 2019-5124
A previously developed CE–QUAL–W2 model for Madison Lake, Minnesota, simulated the algal community dynamics, water quality, and fish habitat suitability of Madison Lake under recent (2014) meteorological conditions. Additionally, this previously developed model simulated the complex interplay between external nutrient loading, internal nutrient loading from sediment release of phosphorus, and...
The lava flow that came to Hilo—The 1880–81 eruption of Mauna Loa volcano, Island of Hawai‘i
James P. Kauahikaua, Ben Gaddis, Ku`ulei Kanahele, Ken Hon, Valerie Wasser
2019, Scientific Investigations Report 2019-5129
The Mauna Loa eruption sequence of 1880–81 consists of two eruptions. The May 1880 eruption in Mokuʻāweoweo at the summit of Mauna Loa lasted just a few days and was followed 6 months later by three lava flows that issued from vents along the Northeast Rift Zone. The November 1880...
Assessment of the impacts of image signal-to-noise ratios in impervious surface mapping
George Z. Xian, Hua Shi, Cody Anderson, Zhuoting Wu
2019, Remote Sensing (11)
Medium spatial resolution satellite images are frequently used to characterize thematic land cover and a continuous field at both regional and global scales. However, high spatial resolution remote sensing data can provide details in landscape structures, especially in the urban environment. With upgrades to spatial resolution and spectral coverage for...
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—2018
Daniel J. Cain, Janet K. Thompson, Francis Parchaso, Sarah Pearson, Robin Stewart, Matthew A. Turner, Kelly H. Shrader, Emily L. Zierdt Smith, Samuel N. Luoma
2019, Open-File Report 2019-1084
Trace-metal concentrations in sediment and in the clam Macoma petalum (formerly reported as Macoma balthica), 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 Francisco Bay, Calif. This report includes...
The effects of management practices on grassland birds—Henslow’s Sparrow (Centronyx henslowii)
James R. Herkert
2019, Professional Paper 1842-II
Keys to Henslow’s Sparrow (Centronyx henslowii) management are providing large grasslands with tall, dense, herbaceous vegetation and well-developed litter; avoiding habitat disturbances during the breeding season; and controlling plant succession. Henslow’s Sparrows have been reported to use habitats with less than or equal to (≤) 122 centimeters (cm) average vegetation...
Evaluation of potential sources of sauger Sander canadensis for reintroduction into Lake Erie
Travis Hartman, Jeff Tyson, Kevin Page, Wendylee Stott
2019, Journal of Great Lakes Research (45) 1299-1309
Sauger (Sander canadensis) supported recreational and commercial fisheries in Lake Erie until the fishery collapsed in the early-1950s, with extirpation of sauger occurring soon after. Previous attempts to rebuild populations via stocking programs were unsuccessful, and the reasons for lack of success are unclear. The Ohio Department of Natural Resources-Division...
Overview, chronology, and impacts of the 2016–2017 eruption of Bogoslof volcano, Alaska
Michelle L. Coombs, Kristi L. Wallace, Cheryl Cameron, John J. Lyons, Aaron Wech, Kim M. Angeli, Peter Cervelli
2019, Bulletin of Volcanology (81)
The 2016–2017 eruption of Bogoslof volcano, a back-arc shallow submarine volcano in Alaska’s Aleutian arc, began in December 2016 and included 70 explosive events and at least two episodes of subaerial dome building. Because the volcano had no local monitoring stations during the eruption, a combination of distant seismic stations,...
Submergence responses of cool-season annual plants and potential for fish habitat
G Coppola, Leandro E. Miranda, ME Colvin, HR Hatcher, Marcus A. Lashley
2019, North American Journal of Fisheries Management (39) 1269-1276
Unnatural water regimes of flood control reservoirs limit vegetation establishment in littoral zones and produce mudflats with low structural complexity insufficient for many juvenile fishes. One strategy to enhance habitat on mudflats is to sow cool-season plants to provide submerged structure when inundated. However, how long the structure of these...
Precision of VS30 values derived from noninvasive surface wave methods at 31 sites in California
Alan K. Yong, Antony Martin, Jack Boatwright
2019, Soil Dynamics and Earthquake Engineering (127)
We study the inter- and intra-method variability of VS30 results by inverting/forward-modeling individual dispersion data for 31 seismographic stations located in California where combinations of surface-wave methods were applied and the minimum recorded wavelength from each method satisfies the 30-meter depth criteria. These methods consist of noninvasive geophysical (active...
Streambed flux measurement informed by distributed temperature sensing leads to a significantly different characterization of groundwater discharge
Troy E. Gilmore, Mari-Vaughn V. Johnson, J Korus, Aaron R. Mittelstet, Martin A. Briggs, V. Zlotnik, S. Corcoran
2019, Water (11)
Groundwater discharge though streambeds is often focused toward discrete zones, indicating that preliminary reconnaissance may be useful for capturing the full spectrum of groundwater discharge rates using point-scale quantitative methods. However, many direct-contact reconnaissance techniques can be time consuming, and remote sensing (e.g. thermal infrared) typically does not penetrate the...
Earthquakes, PAGER
David J. Wald, Kishor S. Jaiswal, Kristin Marano, Mike Hearne
2019, Book chapter, Encyclopedia of Solid Earth Geophysics
PAGER, short for Prompt Assessment of Global Earthquakes for Response, is an automated system developed and run by the US Geological Survey (USGS) that produces information concerning the impact of significant earthquakes around the world within approximately 20 min of any magnitude 5.5 or larger event. PAGER rapidly...
A statewide evaluation of Florida Bass genetic introgression in Tennessee
John S. Hargrove, Mark W. Rogers, P.T. Kackmar, P. Black
2019, North American Journal of Fisheries Management (39) 637-651
Largemouth Bass (Micropterus salmoides) are one of the most popular freshwater sport fish in the United States and managers in southeastern states have stocked the Florida Bass (M. s. floridanus) subspecies outside of its natural range to increase size structure of existing Largemouth Bass populations. In Tennessee, fisheries for Largemouth...
Changes in adult Chinook salmon (Oncorhynchus tshawytscha) survival within the lower Columbia River amid increasing pinniped abundance
A. Michelle Wargo Rub, Nicholas A. Som, Mark J. Henderson, Benjamin P. Sandford, Donald M. Van Doornik, David J. Teel, Matt Tennis, Olaf P. Langness, Bjorn van der Leeuw, David D. Huff
2019, Canadian Journal Fisheries and Aquatic Sciences (76) 1862-1873
Significant effort towards conservation has contributed to the recovery of historically depleted pinniped populations world-wide. However, in several locations where pinnipeds have increased, they have been blamed for preventing the recovery of commercially valuable fish species through predation. Prompted by increasing pinniped abundance within the Columbia River (CR) USA,...
Evaluation of artificial cover units as a sampling technique and habitat enhancement for madtoms in rivers
W. R. Cope, Thomas J. Kwak, T. R. Black, Krishna Pacifici
2019, North American Journal of Fisheries Management (39) 778-787
Instream habitat degradation and loss are major threats to freshwater fishes and critical conservation issues among nongame species, due to a lack of research and knowledge concerning their habitat requirements. Instream physical cover is an important component of fish habitat, especially for benthic species that require cover for reproduction and...
Effects of invasive plants on fire regimes and postfire vegetation diversity in an arid ecosystem
Emma C. Underwood, Robert C. Klinger, Matthew L. Brooks
2019, Ecology and Evolution (9) 12421-12435
We assessed the impacts of co‐occurring invasive plant species on fire regimes and postfire native communities in the Mojave Desert, western USA. We analyzed the distribution and co‐occurrence patterns of three invasive annual grasses (Bromus rubens, Bromus tectorum, and Schismus spp.) known to alter fuel conditions and community structure, and...
Puerto Rico Sicydium goby diversity: Species-specific insights on population structures and distributions
A.C. Engman, G.M Hogue, W.C. Starnes, M. E. Raley, Thomas J. Kwak
2019, Neotropical Biodiversity (5) 22-29
Sicydiine gobies are major contributors to Caribbean stream fish biodiversity, and ecosystem functions and services. In the Caribbean, Sicydiine gobies are represented by a single genus, Sicydium, but species-level Sicydium taxonomy and distributions remain unresolved in this region. A previous study posited that four species of Sicydium are present in...
Changes in long-term water quality of Baltimore streams are associated with both gray and green infrastructure
Alexander J. Reisinger, Ellen L Woytowitz, Emily H. Majcher, Emma J. Rosi, Kenneth T. Belt, Jonathan M. Duncan, Sujay S. Kaushal, Peter M. Groffman
2019, Limnology and Oceanography journal (64) S60-S76
The steadily rising global urban population has placed substantial strain on urban water quality, and this strain is projected to increase for the foreseeable future. Considerable attention has been given to the hydrological and physico-chemical effects of urbanization on stream ecosystems. However, due to the relative infancy of the field...
Adapting to climate change: Guidance for the management of inland glacial lake fisheries
R.W. Tingley, Craig P. Paukert, G. G. Sass, P. C. Jacobson, G. J. A. Hansen, Abigail Lynch, P. D. Shannon
2019, Lake and Reservoir Management (35) 435-452
Climate change is altering glacial lake fisheries in the United States, presenting a complex challenge for fisheries managers. Here we provide a regional perspective to guide management of heterogeneous and yet interdependent fishery resources in glacial lakes of the upper Midwest. Our main objective was to promote the adaptation of...
Mercury source changes and food web shifts alter contamination signatures of predatory fish from Lake Michigan
Ryan F. Lepak, Joel C. Hoffman, Sarah E. Janssen, David P. Krabbenhoft, Jacob M. Ogorek, John F. DeWild, Michael T. Tate, Christopher L. Babiarz, Runsheng Yin, Elizabeth W Murphy, Daniel R Engstrom, James P. Hurley
2019, Proceedings of the National Academy of Sciences (116) 23600-23608
To understand the impact reduced mercury (Hg) loading and invasive species have had on methylmercury bioaccumulation in predator fish of Lake Michigan, we reconstructed bioaccumulation trends from a fish archive (1978 to 2012). By measuring fish Hg stable isotope ratios, we related temporal changes in Hg concentrations to varying Hg...
2019 Disaster Relief Act: USGS recovery activities
Jo Ellen Hinck, Joseph Stachyra
2019, Fact Sheet 2019-3066
The Additional Supplemental Appropriations for Disaster Relief Act of 2019 (H.R. 2157) was signed by the President on June 6, 2019. The U.S. Geological Survey received $98.5 million for repair and replacement of facilities and equipment, collection of high-resolution elevation data in affected areas, and scientific assessments to support recovery...
