Estimation of a Trophic State Index for selected inland lakes in Michigan, 1999–2013
Lori M. Fuller, Richard S. Jodoin
2016, Scientific Investigations Report 2016-5023
A 15-year estimated Trophic State Index (eTSI) for Michigan inland lakes is available, and it spans seven datasets, each representing 1 to 3 years of data from 1999 to 2013. On average, 3,000 inland lake eTSI values are represented in each of the datasets by a process that relates field-measured...
Electronic archival tags provide first glimpse of bathythermal habitat use by free-ranging adult lake sturgeon Acipenser fulvescens
Andrew S. Briggs, Darryl W. Hondorp, Henry R. Quinlan, James C. Boase, Lloyd C. Mohr
2016, Journal of Freshwater Ecology (31) 477-483
Information on lake sturgeon (Acipenser fulvescens) depth and thermal habitat use during non-spawning periods is unavailable due to the difficulty of observing lake sturgeon away from shallow water spawning sites. In 2002 and 2003, lake sturgeon captured in commercial trap nets near Sarnia, Ontario were implanted with archival tags and...
Paleozoic magmatism and porphyry Cu-mineralization in an evolving tectonic setting in the North Qilian Orogenic Belt, NW China
Kun-Feng Qiu, Jun Deng, Ryan D. Taylor, Kai-Rui Song, Yao-Hui Song, Quan-Zhong Li, Richard J. Goldfarb
2016, Journal of Asian Earth Sciences (122) 20-40
The NWW-striking North Qilian Orogenic Belt records the Paleozoic accretion–collision processes in NW China, and hosts Paleozoic Cu–Pb–Zn mineralization that was temporally and spatially related to the closure of the Paleo Qilian-Qinling Ocean. The Wangdian Cu deposit is located in the eastern part of the North Qilian Orogenic Belt, NW...
GIS representation of coal-bearing areas in Antarctica
Matthew D. Merrill
2016, Open-File Report 2016-1031
Understanding the distribution of coal-bearing geologic units in Antarctica provides information that can be used in sedimentary, geomorphological, paleontological, and climatological studies. This report is a digital compilation of information on Antarctica’s coal-bearing geologic units found in the literature. It is intended to be used in small-scale spatial geographic information...
Evaluation of air-soil temperature relationships simulated by land surface models during winter across the permafrost region
Wenli Wang, Annette Rinke, John C. Moore, Duoying Ji, Xuefeng Cui, Shushi Peng, David M. Lawrence, A. David McGuire, Eleanor J. Burke, Xiaodong Chen, Christine Delire, Charles Koven, Andrew MacDougall, Kazuyuki Saito, Wenxin Zhang, Ramdane Alkama, Theodore J. Bohn, Philippe Ciais, Bertrand Decharme, Isabelle Gouttevin, Tomohiro Hajima, Gerhard Krinner, Dennis P. Lettenmaier, Paul A. Miller, Benjamin Smith, Tetsuo Sueyoshi
2016, The Cryosphere
A realistic simulation of snow cover and its thermal properties are important for accurate modelling of permafrost. We analyze simulated relationships between air and near-surface (20 cm) soil temperatures in the Northern Hemisphere permafrost region during winter, with a particular focus on snow insulation effects in nine land surface...
Measuring spatial patterns in floodplains: A step towards understanding the complexity of floodplain ecosystems: Chapter 6
Murray W. Scown, Martin C. Thoms, Nathan R. De Jager
David J. Gilvear, Malcolm T. Greenwood, Martin C. Thoms, Paul J. Wood, editor(s)
2016, Book chapter, River science: Research and management for the 21st century
Floodplains can be viewed as complex adaptive systems (Levin, 1998) because they are comprised of many different biophysical components, such as morphological features, soil groups and vegetation communities as well as being sites of key biogeochemical processing (Stanford et al., 2005). Interactions and feedbacks among the biophysical components often result...
Illuminating wildfire erosion and deposition patterns with repeat terrestrial lidar
Francis K. Rengers, G.E. Tucker, J. A. Moody, Brian Ebel
2016, Journal of Geophysical Research F: Earth Surface (121) 588-608
Erosion following a wildfire is much greater than background erosion in forests because of wildfire-induced changes to soil erodibility and water infiltration. While many previous studies have documented post-wildfire erosion with point and small plot-scale measurements, the spatial distribution of post-fire erosion patterns at the watershed scale remains largely unexplored....
Assessing the socioeconomic impact and value of open geospatial information
Francoise Pearlman, Jay Pearlman, Richard Bernknopf, Andrew Coote, Massimo Craglia, Lawrence Friedl, Jason Gallo, Henry Hertzfeld, Claire Jolly, Molly K. Macauley, Carl Shapiro, Alan Smart
2016, Open-File Report 2016-1036
The production and accessibility of geospatial information including Earth observation is changing greatly both technically and in terms of human participation. Advances in technology have changed the way that geospatial data are produced and accessed, resulting in more efficient processes and greater accessibility than ever before. Improved technology has also...
Application of effective discharge analysis to environmental flow decision-making
S. Kyle McKay, Mary Freeman, A.P. Covich
2016, Environmental Management (575) 1153-1165
Well-informed river management decisions rely on an explicit statement of objectives, repeatable analyses, and a transparent system for assessing trade-offs. These components may then be applied to compare alternative operational regimes for water resource infrastructure (e.g., diversions, locks, and dams). Intra- and inter-annual hydrologic variability further complicates these already complex...
Study of biological communities subject to imperfect detection: Bias and precision of community N-mixture abundance models in small-sample situations
Yuichi Yamaura, Marc Kery, Andy Royle
2016, Ecological Research (31) 289-305
Community N-mixture abundance models for replicated counts provide a powerful and novel framework for drawing inferences related to species abundance within communities subject to imperfect detection. To assess the performance of these models, and to compare them to related community occupancy models in situations with marginal information, we used...
Prebreeding survival of Roseate Terns Sterna dougallii varies with sex, hatching order and hatching date
Ian C. T. Nisbet, David Monticelli, Jeffrey A. Spendelow, Patricia Szczys
2016, Ibis (158) 327-334
Unequal sex ratios can reduce the productivity of animal populations and are especially prevalent among endangered species. A cohort of 333 Roseate Tern Sterna dougallii chicks at a site where the adult sex ratio was skewed towards females was sexed at hatching and followed through fledging and return to the breeding area,...
Ecology, distribution, and predictive occurrence modeling of Palmers chipmunk (Tamias palmeri): a high-elevation small mammal endemic to the Spring Mountains in southern Nevada, USA
Chris E. Lowrey, Kathleen M. Longshore, Brett R. Riddle, Stacy Mantooth
2016, Journal of Mammalogy (97) 1033-1043
Although montane sky islands surrounded by desert scrub and shrub steppe comprise a large part of the biological diversity of the Basin and Range Province of southwestern North America, comprehensive ecological and population demographic studies for high-elevation small mammals within these areas are rare. Here, we examine the ecology and...
Prioritizing avian species for their risk of population-level consequences from wind energy development
Julie A. Beston, James E. Diffendorfer, Scott Loss, Douglas H. Johnson
2016, PLoS ONE (11) Article e0150813
Recent growth in the wind energy industry has increased concerns about its impacts on wildlife populations. Direct impacts of wind energy include bird and bat collisions with turbines whereas indirect impacts include changes in wildlife habitat and behavior. Although many species may withstand these effects, species that are long-lived with...
Stress in mangrove forests: early detection and preemptive rehabilitation are essential for future successful worldwide mangrove forest management
Roy R Lewis, Eric C Milbrandt, Benjamin Brown, Ken W. Krauss, Andre S. Rovai, James W. Beever, Laura L Flynn
2016, Marine Pollution Bulletin (109) 764-771
Mangrove forest rehabilitation should begin much sooner than at the point of catastrophic loss. We describe the need for “mangrove forest heart attack prevention”, and how that might be accomplished in a general sense by embedding plot and remote sensing monitoring within coastal management plans. The major cause of mangrove...
Online induction heating for determination of isotope composition of woody stem water with laser spectrometry: A methods assessment
Brynne E. Lazarus, Matthew J. Germino, Jessica L. Vander Veen
2016, Isotopes in Environmental and Health Studies (52) 309-325
Application of stable isotopes of water to studies of plant–soil interactions often requires a substantial preparatory step of extracting water from samples without fractionating isotopes. Online heating is an emerging approach for this need, but is relatively untested and major questions of how to best deliver standards and assess interference...
Does water chemistry limit the distribution of New Zealand mud snails in Redwood National Park?
Ryan Vazquez, Darren M. Ward, Adam J. Sepulveda
2016, Biological Invasions (18) 1523-1531
New Zealand mud snails (NZMS) are exotic mollusks present in many waterways of the western United States. In 2009, NZMS were detected in Redwood Creek in Redwood National Park, CA. Although NZMS are noted for their ability to rapidly increase in abundance and colonize new areas, after more than 5 years...
The differing biogeochemical and microbial signatures of glaciers and rock glaciers
Timothy S. Fegel, Jill Baron, Andrew G. Fountain, Gunnar F. Johnson, Edward K. Hall
2016, Journal of Geophysical Research G: Biogeosciences (121) 919-932
Glaciers and rock glaciers supply water and bioavailable nutrients to headwater mountain lakes and streams across all regions of the American West. Here we present a comparative study of the metal, nutrient, and microbial characteristics of glacial and rock glacial influence on headwater ecosystems in three mountain ranges of the...
Organic contaminants in Great Lakes tributaries: Prevalence and potential aquatic toxicity
Austin K. Baldwin, Steven R. Corsi, Laura A. De Cicco, Peter L. Lenaker, Michelle A. Lutz, Daniel J. Sullivan, Kevin D. Richards
2016, Science of the Total Environment (554-555) 42-52
Organic compounds used in agriculture, industry, and households make their way into surface waters through runoff, leaking septic-conveyance systems, regulated and unregulated discharges, and combined sewer overflows, among other sources. Concentrations of these organic waste compounds (OWCs) in some Great Lakes tributaries indicate a high potential for adverse impacts on...
Using science-policy integration to improve ecosystem science and inform decision-making: Lessons from U.S. LTERs
Pamela H. Templer, Kathleen Fallon Lambert, Marissa Weiss, Jill Baron, Charles T. Driscoll, David R. Foster
2016, Bulletin of the Ecological Society of America (97) 123-128
This Special Session took place on 12 August 2015 at the 100th Meeting of the Ecological Society of America in Baltimore, Maryland, and was conceived of and coordinated by the Science Policy Exchange. The Science Policy Exchange (SPE) is a boundary- spanning organization established to work at the interface of...
Application of lime (CaCO3) to promote forest recovery from severe acidification increases potential for earthworm invasion
Caitlin Homan, Colin M Beirer, Timothy S McCay, Gregory B. Lawrence
2016, Forest Ecology and Management (368) 39-44
The application of lime (calcium carbonate) may be a cost-effective strategy to promote forest ecosystem recovery from acid impairment, under contemporary low levels of acidic deposition. However, liming acidified soils may create more suitable habitat for invasive earthworms that cause significant damage to forest floor communities and may disrupt ecosystem...
Assessment of undiscovered hydrocarbon resources of sub-Saharan Africa
Michael E. Brownfield
2016, Data Series 69-GG
Introduction The main objective of the U.S. Geological Survey’s (USGS) National and Global Petroleum Assessment Project is to assess the potential for undiscovered, technically recoverable oil and natural gas resources of the United States and the world (U.S. Geological Survey World Conventional Resources Assessment Team, 2012). The USGS updated assessments that...
Impacts of introduced Rangifer on ecosystem processes of maritime tundra on subarctic islands
Mark A. Ricca, A. Keith Miles, Dirk H. Van Vuren, Valerie T. Eviner
2016, Ecosphere (7) Article e01219
Introductions of mammalian herbivores to remote islands without predators provide a natural experiment to ask how temporal and spatial variation in herbivory intensity alter feedbacks between plant and soil processes. We investigated ecosystem effects resulting from introductions of Rangifer tarandus (hereafter “Rangifer”) to native mammalian predator- and herbivore-free islands in the Aleutian...
The role of competition – colonization tradeoffs and spatial heterogeneity in promoting trematode coexistence
Erin A. Mordecai, Alejandra G. Jaramillo, Jacob E. Ashford, Ryan F. Hechinger, Kevin D. Lafferty
2016, Ecology (97) 1484-1496
Competition – colonization tradeoffs occur in many systems, and theory predicts that they can strongly promote species coexistence. However, there is little empirical evidence that observed competition – colonization tradeoffs are strong enough to maintain diversity in natural systems. This is due in part to a mismatch between theoretical assumptions...
Changing regional emissions of airborne pollutants reflected in the chemistry of snowpacks and wetfall in the Rocky Mountain region, USA, 1993–2012
George P. Ingersoll, Debra C. Miller, Kristi H. Morris, Jill A. McMurray, Garrett M. Port, Brian Caruso
2016, Water, Air, & Soil Pollution (227) 1-18
Wintertime precipitation sample data from 55 Snowpack sites and 17 National Atmospheric Deposition Program (NADP)/National Trends Network Wetfall sites in the Rocky Mountain region were examined to identify long-term trends in chemical concentration, deposition, and precipitation using Regional and Seasonal Kendall tests. The Natural Resources Conservation Service snow-telemetry...
Interannual and long-term changes in the trophic state of a multibasin lake: Effects of morphology, climate, winter aeration, and beaver activity
Dale M. Robertson, William Rose, Paul C. Reneau
2016, Canadian Journal of Fisheries and Aquatic Sciences (73) 445-460
Little St. Germain Lake (LSG), a relatively pristine multibasin lake in Wisconsin, USA, was examined to determine how morphologic (internal), climatic (external), anthropogenic (winter aeration), and natural (beaver activity) factors affect the trophic state (phosphorus, P; chlorophyll, CHL; and Secchi depth, SD) of each of its basins. Basins intercepting the...
