Metabolic and physiochemical responses to a whole-lake experimental increase in dissolved organic carbon in a north-temperate lake
Jacob A. Zwart, Nicola Craig, Patrick T. Kelly, Stephen D. Sebestyen, Christopher T. Solomon, Brian Weidel, Stuart E. Jones
2016, Limnology and Oceanography (61) 723-734
Over the last several decades, many lakes globally have increased in dissolved organic carbon (DOC), calling into question how lake functions may respond to increasing DOC. Unfortunately, our basis for making predictions is limited to spatial surveys, modeling, and laboratory experiments, which may not accurately capture important whole-ecosystem processes. In...
Multi-scale predictions of massive conifer mortality due to chronic temperature rise
Nathan G. McDowell, A.P. Williams, C. Xu, W. T. Pockman, L. T. Dickman, Sanna Sevanto, R. Pangle, J. Limousin, J.J. Plaut, D.S. Mackay, J. Ogee, Jean-Christophe Domec, Craig D. Allen, Rosie A. Fisher, X. Jiang, J.D. Muss, D.D. Breshears, Sara A. Rauscher, C. Koven
2016, Nature Climate Change (6) 295-300
Global temperature rise and extremes accompanying drought threaten forests and their associated climatic feedbacks. Our ability to accurately simulate drought-induced forest impacts remains highly uncertain in part owing to our failure to integrate physiological measurements, regional-scale models, and dynamic global vegetation models (DGVMs). Here we show consistent predictions of widespread mortality of...
Upper Maastrichtian ammonite biostratigraphy of the Gulf Coastal Plain (Mississippi Embayment, southern USA)
Ekaterina Larina, Matthew P. Garb, Neil H. Landman, Natalie Dastas, Nicolas Thibault, Lucy E. Edwards, George Phillips, Remy Rovelli, Corinne Myers, Jone Naujokaityte
2016, Cretaceous Research (60) 128-151
The Cretaceous outcrop belt of the Mississippi Embayment in the Gulf Coastal Plain (GCP) spans the Cretaceous/Paleogene (K/Pg) boundary. A detailed reconstruction of this time interval is critical for understanding the nature of biotic and environmental changes preceding the end-Cretaceous Mass Extinction event and for deciphering the likely extinction mechanism...
Soil amplification with a strong impedance contrast: Boston, Massachusetts
Laurie G. Baise, James Kaklamanos, Bradford M Berry, Eric M. Thompson
2016, Engineering Geology (202)
In this study, we evaluate the effect of strong sediment/bedrock impedance contrasts on soil amplification in Boston, Massachusetts, for typical sites along the Charles and Mystic Rivers. These sites can be characterized by artificial fill overlying marine sediments overlying glacial till and bedrock, where the depth to bedrock ranges from...
A guide for establishing restoration goals for contaminated ecosystems
Anne M. Wagner, Diane L. Larson, Julie A. DalSoglio, James A. Harris, Paul Labus, Emma J. Rosi-Marshall, Krisin E. Skarbis
2016, Integrated Environmental Assessment and Management (12) 264-272
As natural resources become increasingly limited, the value of restoring contaminated sites, both terrestrial and aquatic, becomes increasingly apparent. Traditionally, goals for remediation have been set before any consideration of goals for ecological restoration. The goals for remediation have focused on removing or limiting contamination whereas restoration goals have targeted...
Structure and spatial patterns of macrobenthic community in Tai Lake, a large shallow lake, China
Di Li, Richard A. Erickson, Song Tang, Xuwen Li, Zhichun Niu, Xia Wang, Hongling Liu, Hongxia Yu
2016, Ecological Indicators (61) 170-187
Tai Lake (Chinese: Taihu), the third-largest freshwater lake in China, suffers from harmful cyanobacteria blooms that are caused by economic development and population growth near the lake. Several studies have focused on phytoplankton in Tai Lake after a drinking water crisis in 2007; however, these studies primarily focused on microcystin bioaccumulation...
Spatial capture-recapture models allowing Markovian transience or dispersal
J. Andrew Royle, Angela K. Fuller, Chris Sutherland
2016, Population Ecology (58) 53-62
Spatial capture–recapture (SCR) models are a relatively recent development in quantitative ecology, and they are becoming widely used to model density in studies of animal populations using camera traps, DNA sampling and other methods which produce spatially explicit individual encounter information. One of the core assumptions of SCR models is...
Water use in Georgia by county for 2010 and water-use trends, 1985–2010
Stephen J. Lawrence
2016, Open-File Report 2015-1230
Water use and water withdrawals and returns in 2010 are estimated for each major river basin, principal aquifer, water-planning region, and county in Georgia using data obtained from various Federal and State agencies and local sources. Offstream water use in 2010 is estimated for the categories of public supply, domestic,...
Climate change and water resources in a tropical island system: Propagation of uncertainty from statistically downscaled climate models to hydrologic models
Ashley E. Van Beusekom, William A. Gould, Adam J. Terando, Jaime A. Collazo
2016, International Journal of Climatology (36) 3370-3383
Many tropical islands have limited water resources with historically increasing demand, all potentially affected by a changing climate. The effects of climate change on island hydrology are difficult to model due to steep local precipitation gradients and sparse data. This work uses 10 statistically downscaled general circulation models (GCMs) under...
Acute and chronic toxicity of sodium sulfate to four freshwater organisms in water-only exposures
Ning Wang, Rebecca A. Consbrock, Christopher G. Ingersoll, Douglas K. Hardesty, William G. Brumbaugh, Edward J. Hammer, Candice R. Bauer, David R. Mount
2016, Environmental Toxicology and Chemistry (35) 115-127
The acute and chronic toxicity of sulfate (tested as sodium sulfate) was determined in diluted well water (hardness of 100 mg/L and pH 8.2) with a cladoceran (Ceriodaphnia dubia; 2-d and 7-d exposures), a midge (Chironomus dilutus; 4-d and 41-d exposures), a unionid mussel (pink mucket, Lampsilis abrupta; 4-d and...
The effects of habitat, climate, and Barred Owls on long-term demography of Northern Spotted Owls
Katie M. Dugger, Eric D. Forsman, Alan B. Franklin, Raymond J. Davis, Gary C. White, Carl J. Schwarz, Kenneth P. Burnham, James D. Nichols, James E. Hines, Charles B. Yackulic, Paul F. Doherty, Larissa Bailey, Darren A. Clark, Steven H. Ackers, Lawrence S. Andrews, Benjamin Augustine, Brian L. Biswell, Jennifer Blakesley, Peter C. Carlson, Matthew J. Clement, Lowell V. Diller, Elizabeth M. Glenn, Adam Green, Scott A. Gremel, Dale R. Herter, J. Mark Higley, Jeremy Hobson, Rob B. Horn, Kathryn P. Huyvaert, Christopher McCafferty, Trent McDonald, Kevin McDonnell, Gail S. Olson, Janice A. Reid, Jeremy Rockweit, Viviana Ruiz, Jessica Saenz, Stan G. Sovern
2016, Condor (118) 57-116
Estimates of species' vital rates and an understanding of the factors affecting those parameters over time and space can provide crucial information for management and conservation. We used mark–recapture, reproductive output, and territory occupancy data collected during 1985–2013 to evaluate population processes of Northern Spotted Owls (Strix occidentalis caurina) in 11...
Transforming growth factor-β1 expression in endangered age-0 shortnose suckers (Chasmistes brevirostris) from Upper Klamath Lake, OR relative to histopathology, meristic, spatial, and temporal data
Christopher A. Ottinger, Christine L. Densmore, Laura S. Robertson, Deborah D. Iwanowicz, Scott P. Vanderkooi
2016, Fish & Shellfish Immunology (49) 1-6
During July – September of 2008, 2009, and 2010 endangered age-0 juvenile shortnose suckers were sampled from Upper Klamath Lake, OR in a health evaluation that included the measurement of transforming growth factor – beta (TGF-β) expression in spleen in combination with a histopathology assessment. This analysis was performed to...
The current status of mapping karst areas and availability of public sinkhole-risk resources in karst terrains of the United States
Eve L. Kuniansky, David J. Weary, James E. Kaufmann
2016, Hydrogeology Journal (24) 613-624
Subsidence from sinkhole collapse is a common occurrence in areas underlain by water-soluble rocks such as carbonate and evaporite rocks, typical of karst terrain. Almost all 50 States within the United States (excluding Delaware and Rhode Island) have karst areas, with sinkhole damage highest in Florida, Texas, Alabama, Missouri, Kentucky,...
Seasonal Distribution and Movements of Atlantic and Shortnose Sturgeon in the Penobscot River Estuary, Maine
Joseph D. Zydlewski, Stephen J. Fernandes, Gayle B. Zydlewski, Gail S. Wippelhauser, Michael T. Kinnison
2016, Transactions of the American Fisheries Society (139) 1436-1449
Relatively little is known about the distribution and seasonal movement patterns of shortnose sturgeon Acipenser brevirostrum and Atlantic sturgeon Acipenser oxyrinchus oxyrinchus occupying rivers in the northern part of their range. During 2006 and 2007, 40 shortnose sturgeon (66–113.4 cm fork length [FL]) and 8 Atlantic sturgeon (76.2–166.2 cm FL)...
Soil moisture response to experimentally altered snowmelt timing is mediated by soil, vegetation, and regional climate patterns
Lafe G Conner, Richard A. Gill, Jayne Belnap
2016, Ecohydrology (9) 1006-1016
Soil moisture in seasonally snow-covered environments fluctuates seasonally between wet and dry states. Climate warming is advancing the onset of spring snowmelt and may lengthen the summer-dry state and ultimately cause drier soil conditions. The magnitude of either response may vary across elevation and vegetation types. We situated our study...
Radiometric dating of marine-influenced coal using Re–Os geochronology
Gyana Ranjan Tripathy, Judith L. Hannah, Holly J. Stein, Nicholas J. Geboy, Leslie F. Ruppert
2016, Earth and Planetary Science Letters (432) 13-23
Coal deposits are integral to understanding the structural evolution and thermal history of sedimentary basins and correlating contemporeous estuarine and fluvial delatic strata with marine sections. While marine shales may readily lend themselves to Re–Os dating due to the dominance of hydrogenous Re and Os,...
Impacts of climatic variation on trout: A global synthesis and path forward
Ryan Kovach, Clint C. Muhlfeld, Robert K. Al-Chokhachy, Jason B. Dunham, Benjamin Letcher, Jeffrey L. Kershner
2016, Reviews in Fish Biology and Fisheries (26) 135-151
Despite increasing concern that climate change may negatively impact trout—a globally distributed group of fish with major economic, ecological, and cultural value—a synthetic assessment of empirical data quantifying relationships between climatic variation and trout ecology does not exist. We conducted a systematic review to describe how temporal variation in temperature...
A systematic survey of the integration of animal behavior into conservation
Oded Berger-Tal, Daniel T. Blumstein, Scott Carroll, Robert N. Fisher, Sarah L. Mesnick, Megan A. Owen, David Saltz, Colleen Cassady St. Claire, Ronald R. Swaisgood
2016, Conservation Biology (30) 744-753
The role of behavioral ecology in improving wildlife conservation and management has been the subject of much recent debate. We aim to answer two foundational questions about the current use of behavioral knowledge in conservation: 1. To what extent is behavioral knowledge used in wildlife conservation and management? 2. How...
Human activities and climate variability drive fast-paced change across the world's estuarine-coastal ecosystems
James E. Cloern, Paulo C. Abreu, Jacob Carstensen, Laurent Chauvaud, Ragnar Elmgren, Jacques Grall, Holly Greening, John O.R. Johansson, Mati Kahru, Edward T. Sherwood, J. Xu, Kedong Yin
2016, Global Change Biology (22) 513-529
Time series of environmental measurements are essential for detecting, measuring and understanding changes in the Earth system and its biological communities. Observational series have accumulated over the past 2–5 decades from measurements across the world's estuaries, bays, lagoons, inland seas and shelf waters influenced by runoff. We synthesize information contained...
High and dry: high elevations disproportionately exposed to regional climate change in Mediterranean-climate landscapes
Ian M. McCullough, Frank W. Davis, John R. Dingman, Lorraine E. Flint, Alan L. Flint, Josep M. Serra-Diaz, Alexandra D. Syphard, Max A. Moritz, Lee Hannah, Janet Franklin
2016, Landscape Ecology (31) 1063-1075
Context Predicting climate-driven species’ range shifts depends substantially on species’ exposure to climate change. Mountain landscapes contain a wide range of topoclimates and soil characteristics that are thought to mediate range shifts and buffer species’ exposure. Quantifying fine-scale patterns of exposure across mountainous terrain is a...
Comparative demographics of a Hawaiian forest bird community
Alban Guillaumet, Bethany L. Woodworth, Richard J. Camp, Eben H. Paxton
2016, Journal of Avian Biology (47) 185-196
Estimates of demographic parameters such as survival and reproductive success are critical for guiding management efforts focused on species of conservation concern. Unfortunately, reliable demographic parameters are difficult to obtain for any species, but especially for rare or endangered species. Here we derived estimates of adult survival and recruitment in...
Evidence of estrogenic endocrine disruption in smallmouth and largemouth bass inhabiting Northeast U.S. National Wildlife Refuge waters: A reconnaissance study
Luke R. Iwanowicz, Vicki S. Blazer, A.E. Pinkney, C.P. Guy, A.M. Major, K. Munney, S. Mierzykowski, S. Lingenfelser, A. Secord, K. Patnode, T.J. Kubiak, C. Stern, Cassidy M. Hahn, Deborah D. Iwanowicz, Heather L. Walsh, Adam J. Sperry
2016, Ecotoxicology and Environmental Safety (124) 50-59
Intersex as the manifestation of testicular oocytes (TO) in male gonochoristic fishes has been used as an indicator of estrogenic exposure. Here we evaluated largemouth bass (Micropterus salmoides) or smallmouth bass (Micropterus dolomieu) form 19 National Wildlife Refuges (NWRs) in the Northeast U.S. inhabiting waters on or near NWR lands...
A global planktic foraminifer census data set for the Pliocene ocean
Harry J. Dowsett, Marci M. Robinson, Kevin M. Foley
2016, Scientific Data (2)
This article presents data derived by the USGS Pliocene Research, Interpretation and Synoptic Mapping (PRISM) Project. PRISM has generated planktic foraminifer census data from core sites and outcrops around the globe since 1988. These data form the basis of a number of paleoceanographic reconstructions focused on the mid-Piacenzian...
Species and tissue type regulate long-term decomposition of brackish marsh plants grown under elevated CO2 conditions
Joshua A Jones, Julia A Cherry, Karen L. McKee
2016, Estuarine, Coastal and Shelf Science (169) 38-45
Organic matter accumulation, the net effect of plant production and decomposition, contributes to vertical soil accretion in coastal wetlands, thereby playing a key role in whether they keep pace with sea-level rise. Any factor that affects decomposition may affect wetland accretion, including atmospheric CO2 concentrations. Higher CO2 can influence decomposition rates by...
Non-linear resonant coupling of tsunami edge waves using stochastic earthquake source models
Eric L. Geist
2016, Geophysical Journal International (204) 878-891
Non-linear resonant coupling of edge waves can occur with tsunamis generated by large-magnitude subduction zone earthquakes. Earthquake rupture zones that straddle beneath the coastline of continental margins are particularly efficient at generating tsunami edge waves. Using a stochastic model for earthquake slip, it is shown that a wide range of...
