Groundwater quality in the shallow aquifers of the Madera–Chowchilla and Kings subbasins, San Joaquin Valley, California
Miranda S. Fram, Jennifer L. Shelton
2018, Open-File Report 2017-1162
Groundwater provides more than 40 percent of California’s drinking water. To protect this vital resource, the State of California created the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The GAMA Program’s Priority Basin Project assesses the quality of groundwater resources used for drinking-water supply and increases public access to groundwater-quality...
River otter distribution in Nebraska
N. R. Bieber, S. P. Wilson, Craig R. Allen
2018, Wildlife Society Bulletin (42) 136-143
The river otter (Lontra canadensis) was extirpated from Nebraska, USA, in the early 1900s and reintroduced starting in 1986. Information is needed regarding the distribution of river otters in Nebraska before decisions can be made regarding its conservation status. Understanding distribution of a species is critically important for effective management....
River otter distribution in Nebraska
N.R. Bieber, S.P. Wilson, Craig R. Allen
2018, Wildlife Society Bulletin (42) 136-143
The river otter (Lontra canadensis) was extirpated from Nebraska, USA, in the early 1900s and reintroduced starting in 1986. Information is needed regarding the distribution of river otters in Nebraska before decisions can be made regarding its conservation status. Understanding distribution of a species is critically important for effective management....
Simulation of hydrodynamics, water quality, and lake sturgeon habitat volumes in Lake St. Croix, Wisconsin and Minnesota, 2013
Erik A. Smith, Richard L. Kiesling, Jeffrey R. Ziegeweid, Sarah M. Elliott, Suzanne Magdalene
2018, Scientific Investigations Report 2017-5157
Lake St. Croix is a naturally impounded, riverine lake that makes up the last 40 kilometers of the St. Croix River. Substantial land-use changes during the past 150 years, including increased agriculture and urban development, have reduced Lake St. Croix water-quality and increased nutrient loads delivered to Lake St. Croix....
Crevice-nesting auklets are early-successional species requiring disturbance to persist
Heather M. Renner, Lawrence R Walker, Christopher F. Waythomas, Jeffrey C. Williams, Yuri Artkhin
2018, Arctic, Antarctic, and Alpine Research (49) 585-599
Auklets (Aethia spp.) are small seabirds, endemic to the North Pacific Ocean, that nest in rock crevices on islands in Alaska and Russia. Nesting habitats for least (A. pusilla) and crested (A. cristatella) auklet colonies in the southern part of their range (Aleutian and Kuril Islands) are becoming overgrown...
Chemical concentrations in water and suspended sediment, Green River to Lower Duwamish Waterway near Seattle, Washington, 2016–17
Kathleen E. Conn, Robert W. Black, Norman T. Peterson, Craig A. Senter, Elena A. Chapman
2018, Data Series 1073
From August 2016 to March 2017, the U.S. Geological Survey (USGS) collected representative samples of filtered and unfiltered water and suspended sediment (including the colloidal fraction) at USGS streamgage 12113390 (Duwamish River at Golf Course, at Tukwila, Washington) during 13 periods of differing flow conditions. Samples were analyzed by...
Effects of watershed and in-stream liming on macroinvertebrate communities in acidified tributaries to an Adirondack lake
Scott D. George, Barry P. Baldigo, Gregory B. Lawrence, Randall L. Fuller
2018, Ecological Indicators (85) 1058-1067
Liming techniques are being explored as a means to accelerate the recovery of aquatic biota from decades of acid deposition in many regions. The preservation or restoration of native sportfish populations has typically been the impetus for liming programs, and as such, less attention has been given to its effects...
Extreme-event geoelectric hazard maps: Chapter 9
Jeffrey J. Love, Paul A. Bedrosian
2018, Book chapter, Extreme events in geospace
Maps of geoelectric amplitude covering about half the continental United States are presented that will be exceeded, on average, once per century in response to an extreme-intensity geomagnetic disturbance. These maps are constructed using an empirical parameterization of induction: convolving latitude-dependent statistical maps of extreme-value geomagnetic disturbances, obtained from decades...
Nutrient dynamics in partially drained arctic thaw lakes
Joshua C. Koch, Tom F. Fondell, Joel A. Schmutz, Sarah M. Laske
2018, Journal of Geophysical Research: Biogeosciences (123) 440-452
Thaw lakes are ubiquitous on arctic coastal plains (ACPs). While many thaw lakes have steep banks, stable water levels, and static surface areas, others only partially fill their basins and vary in area over the summer. These partially drained lakes (PDLs) are hydrologically connected to the wetlands immediately surrounding them....
Effects of sea lamprey substrate modification and carcass nutrients on macroinvertebrate assemblages in a small Atlantic coastal stream
Daniel M. Weaver, Stephen M. Coghlan Jr., Joseph D. Zydlewski
2018, Journal of Freshwater Ecology (33) 19-30
Aquatic macroinvertebrates respond to patch dynamics arising from interactions of physical and chemical disturbances across space and time. Anadromous fish, such as sea lamprey, Petromyzon marinus, migrate from the ocean and alter physical and chemical properties of recipient spawning streams. Sea lamprey disturb stream benthos physically through nest construction and spawning,...
Mapping forest change using stacked generalization: An ensemble approach
Sean P. Healey, Warren B. Cohen, Zhiqiang Yang, C. Kenneth Brewer, Evan B. Brooks, Noel Gorelick, Alexander J. Hernandez, Chengquan Huang, M. Joseph Hughes, Robert E. Kennedy, Thomas Loveland, Gretchen G. Moisen, Todd A. Schroeder, Stephen V. Stehman, James Vogelmann, Curtis E. Woodcock, Limin Yang, Zhe Zhu
2018, Remote Sensing of Environment (204) 717-728
The ever-increasing volume and accessibility of remote sensing data has spawned many alternative approaches for mapping important environmental features and processes. For example, there are several viable but highly varied strategies for using time series of Landsat imagery to detect changes in forest cover. Performance among algorithms varies across complex natural systems, and it...
Photographs of wading bird depredation events to monitor invasion extent of Asian Swamp Eel (Monopterus albus)
Andrew T. Taylor, James M. Long, H. von Scmeling
2018, Southeastern Naturalist (17) N72-N76
Several anecdotes exist of wading birds depredating invasive Monopterus albus (Asian Swamp Eel) in waterways of the conterminous US. We present photographic evidence of 4 different wading bird species depredating adult Asian Swamp Eels in Georgia and Florida herein. Photographs taken by wildlife enthusiasts could provide a means for early...
High resolution water body mapping for SWAT evaporative modelling in the Upper Oconee watershed of Georgia, USA
Amber R. Ignatius, John Jones
2018, Hydrological Processes (32) 51-65
Technological improvements in remote sensing and geographic information systems have demonstrated the abundance of artificially constructed water bodies across the landscape. Although research has shown the ubiquity of small ponds globally, and in the southeastern United States in particular, their cumulative impact in terms of evaporative alteration is less well...
Advancements in hydrochemistry mapping: methods and application to groundwater arsenic and iron concentrations in Varanasi, Uttar Pradesh, India
Ricardo A. Olea, N. Janardhana Raju, Juan J. Egozcue, Vera Pawlowsky-Glahn, Shubhra Singh
2018, Stochastic Environmental Research and Risk Assessment (32) 241-259
The area east of Varanasi is one of numerous places along the watershed of the Ganges River with groundwater concentrations of arsenic surpassing the maximum value of 10 parts per billion (ppb) recommended by the World Health Organization in drinking water. Here we apply geostatistics and compositional data analysis for...
Characterizing aquatic habitats for long‐term monitoring of a fourth‐order, regulated river in the Pacific Northwest, USA
Christopher P. Konrad, K. Burton, R. Little, Andrew S. Gendaszek, Mark D. Munn, Scott W. Anderson
2018, River Research and Applications (34) 24-33
A pragmatic approach to the long‐term monitoring of rivers leverages available information with targeted field investigations to address key uncertainties relevant to management decisions. An over‐arching management issue for many rivers is how reservoir operation affects the amount and location of in‐channel sediment and the resulting distribution of aquatic habitats....
Barataria and Terrebonne Bays: Chapter F in Emergent wetlands status and trends in the northern Gulf of Mexico: 1950-2010
Lawrence Handley, Kathryn A. Spear, Mirka Zapletal, Cindy A. Thatcher, William R. Jones, Scott A. Wilson
2018, Report, Emergent Wetlands Status and Trends in the Northern Gulf of Mexico: 1950-2010 report
The study area included in the Barataria and Terrebonne Bays vignette of southeastern Louisiana spans eastward from Terrebonne Bay to Barataria Bay (Figure 1) and includes portions of Terrebonne, Lafourche, St. Charles, Jefferson, Orleans, Plaquemines, and St. Bernard Parishes. This area falls between the Mississippi River on the east and northeast, extends down through...
Resilience in environmental risk and impact assessment: Concepts and measurement
David G. Angeler, Craig R. Allen, Ahjond S. Garmestani, Kevin L. Pope, Dirac Twidwell, Mirco Bundschuh
2018, Bulletin of Environmental Contamination and Toxicology (101) 543-548
Different resilience concepts have different assumptions about system dynamics, which has implications for resilience-based environmental risk and impact assessment. Engineering resilience (recovery) dominates in the risk assessment literature but this definition does not account for the possibility of ecosystems to exist in multiple regimes. In this paper we discuss resilience...
Dietary bioprocessed soybean meal does not affect the growth of exercised juvenile rainbow trout (Oncorhynchus mykiss)
Jill M. Voorhees, Michael Barnes, Steven R. Chipps, Michael Browne
2018, Journal of Animal Research and Nutrition (3) 1-13
Context: This 88-day experiment evaluated the rearing performance of juvenile rainbow trout (Oncorhynchus mykiss) fed one of three isonitrogenous and isocaloric diets and reared at velocities of either 2.3 or 18.7 cm s-1.Objective: Evaluate the effects of diet and exercise during rainbow trout rearing.Design: Fishmeal was the primary protein source...
Correlation of the Eagle Ford Group, Woodbine Group, and equivalent Cenomanian-Turonian Mudstones using regional wireline-log cross sections across the Texas Gulf Coast, U.S.A.
Nicholas J. Gianoutsos, Katherine J. Whidden, Russell F. Dubiel, William A. Rouse
2018, Gulf Coast Association of Geological Societies Transactions (68) 219-228
As part of the U.S. Geological Survey’s 2018 hydrocarbon assessment of the Eagle Ford Group and associated Cenomanian-Turonian strata, a series of regional wireline-log cross sections were constructed to examine geologic characteristics of this stratigraphic interval across the Texas Gulf Coast from Mexico to Louisiana. The cross sections were...
Preface: The wetland book, I: Structure and function, management, and methods
C. Max Finlayson, Mark Everard, Kenneth Irvine, Robert J. McInnes, Beth A. Middleton, Anne A. Van Dam, Nick C. Davidson
2018, Book chapter, The wetland book, I: Structure, function, management, and methods
The Wetland Book is a hard copy and online production that provides an unparalleled collation of information on wetlands. It is global in scope and contains 462 chapters prepared by leading wetland researchers and managers. The wide disciplinary and geographic scope is a unique feature and differentiates The Wetland Book...
Yellowstone grizzly bear investigations — Annual report of the Interagency Grizzly Bear Study Team 2017
Frank T. van Manen, Mark A. Haroldson, Bryn Karabensh, editor(s)
2018, Report
This Annual Report summarizes results of grizzly bear (Ursus arctos) monitoring and research conducted in the Greater Yellowstone Ecosystem (GYE) by the Interagency Grizzly Bear Study Team (IGBST) during 2017. This report also contains a summary of grizzly bear management actions to address conflict situations. Annual reports of the IGBST...
Quantifying uncertainty and tradeoffs in resilience assessments
Craig R. Allen, Hannah E. Birge, David G. Angeler, Craig Anthony Arnold, Brian C. Chaffin, Daniel A. DeCaro, Ahjond S. Garmestani, Lance Gunderson
2018, Ecology and Society (1)
Several frameworks have been developed to assess the resilience of social-ecological systems, but most require substantial data inputs, time, and technical expertise. Stakeholders and practitioners often lack the resources for such intensive efforts. Furthermore, most end with problem framing and fail to explicitly address trade-offs and uncertainty. To remedy this...
Data quality from a community-based, water-quality monitoring project in the Yukon River basin
Nicole M. Herman-Mercer, Ronald C. Antweiler, Nicole J. Wilson, Edda A. Mutter, Ryan C. Toohey, Paul F. Schuster
2018, Citizen Science: Theory and Practice (3) 1-13
This paper examines the quality of data collected by the Indigenous Observation Network, a community-based water-quality project in the Yukon River Basin of Alaska and Canada. The Indigenous Observation Network relies on community technicians to collect surface-water samples from as many as fifty locations to achieve their goals of monitoring...
Growth-suppressing and algicidal properties of an extract from Arundo donax, an invasive riparian plant, against Prymnesium parvum, an invasive harmful alga
Reynaldo Patino, Rakib H. Rashel, Amede Rubio, Scott Longing
2018, Harmful Algae (71) 1-9
This study examined the ability of acidic and neutral/alkaline fractions of a methanolic extract from giant reed (Arundo donax) and of two of its constituents, gramine and skatole, to inhibit growth of the ichthyotoxic golden alga (Prymnesium parvum) in batch culture. For this study, growth suppression was defined as inhibition of...
Variation in angler distribution and catch rates of stocked rainbow trout in a small reservoir
Brian S. Harmon, Dustin R. Martin, Christopher J. Chizinski, Kevin L. Pope
2018, PLoS ONE (13) 1-6
We investigated the spatial and temporal relationship of catch rates and angler party location for two days following a publicly announced put-and-take stocking of rainbow trout (Oncorhynchus mykiss). Catch rates declined with time since stocking and distance from stocking. We hypothesized that opportunity for high catch rates would cause anglers...
