Combined effects of nitrogen to phosphorus and nitrate toammonia ratios on cyanobacterial metabolite concentrations ineutrophic Midwestern USA reservoirs
Theodore D. Harris, Val H. Smith, Jennifer L. Graham, Dedmer B. Van de Waal, Lenore Tedesco, Nicolas Clercin
2016, Inland Waters (6) 199-210
Recent studies have shown that the total nitrogen to total phosphorus (TN:TP) ratio and nitrogen oxidation state may have substantial effects on secondary metabolite (e.g., microcystins) production in cyanobacteria. We investigated the relationship between the water column TN:TP ratio and the cyanobacterial secondary metabolites geosmin, 2-methylisoborneol (MIB), and microcystin using...
Understanding environmental DNA detection probabilities: A case study using a stream-dwelling char Salvelinus fontinalis
Taylor Wilcox, Kevin S. Mckelvey, Michael K. Young, Adam J. Sepulveda, Bradley B. Shepard, Stephen F Jane, Andrew R. Whiteley, Winsor H. Lowe, Michael K. Schwartz
2016, Biological Conservation (194) 209-216
Environmental DNA sampling (eDNA) has emerged as a powerful tool for detecting aquatic animals. Previous research suggests that eDNA methods are substantially more sensitive than traditional sampling. However, the factors influencing eDNA detection and the resulting sampling costs are still not well understood. Here we use multiple experiments to derive...
Moss and vascular plant indices in Ohio wetlands have similar environmental predictors
Martin A. Stapanian, William Schumacher, Brian Gara, Jean V. Adams, Nick Viau
2016, Ecological Indicators (62) 138-146
Mosses and vascular plants have been shown to be reliable indicators of wetland habitat delineation and environmental quality. Knowledge of the best ecological predictors of the quality of wetland moss and vascular plant communities may determine if similar management practices would simultaneously enhance both populations. We used Akaike's Information Criterion...
Mosses in Ohio wetlands respond to indices of disturbance and vascular plant integrity
Martin A. Stapanian, William Schumacher, Brian Gara, Nick Viau
2016, Ecological Indicators (63) 110-120
We examined the relationships between an index of wetland habitat quality and disturbance (ORAM score) and an index of vascular plant integrity (VIBI-FQ score) with moss species richness and a moss quality assessment index (MQAI) in 45 wetlands in three vegetation types in Ohio, USA. Species richness of mosses and...
Toward more realistic projections of soil carbon dynamics by Earth system models
Y. Luo, Anders Ahlstrom, Steven D. Allison, Niels H. Batjes, V. Brovkin, Nuno Carvalhais, Adrian Chappell, Philippe Ciais, Eric A. Davidson, Adien Finzi, Katerina Georgiou, Bertrand Guenet, Oleksandra Hararuk, Jennifer Harden, Yujie He, Francesca Hopkins, L. Jiang, Charles Koven, Robert B. Jackson, Chris D. Jones, M. Lara, J. Liang, A. David McGuire, William Parton, Changhui Peng, J. Randerson, Alejandro Salazar, Carlos A. Sierra, Matthew J. Smith, Hanqin Tian, Katherine E. O Todd-Brown, Margaret S. Torn, Kees Jan van Groenigen, Ying Wang, Tristram O. West, Yaxing Wei, William R. Wieder, Jianyang Xia, Xia Xu, Xiaofeng Xu, T. Zhou
2016, Global Biogeochemical Cycles (30) 40-56
Soil carbon (C) is a critical component of Earth system models (ESMs), and its diverse representations are a major source of the large spread across models in the terrestrial C sink from the third to fifth assessment reports of the Intergovernmental Panel on Climate Change (IPCC). Improving soil C projections...
Pre-Mississippian tectonic affinity across the Canada Basin–Arctic margins of Alaska and Canada
David W. Houseknecht, Christopher D. Connors
2016, Geology (44) 507-510
New and reprocessed seismic reflection data on the Alaskan and Canadian Arctic margins of the Canada Basin, together with geologic constraints from exploration wells and outcrops, reveal structural and stratigraphic relationships in pre-Mississippian rocks that constrain models of Canada Basin opening. Lithostratigraphic age and acoustic character indicate that the Devonian...
Slab-rollback ignimbrite flareups in the southern Great Basin and other Cenozoic American arcs: A distinct style of arc volcanism
Myron G. Best, Eric H. Christiansen, Shanaka de Silva, Peter W. Lipman
2016, Geosphere (12) 1097-1135
In continental-margin subduction zones, basalt magmas spawned in the mantle interact with the crust to produce a broad spectrum of volcanic arc associations. A distinct style of very voluminous arc volcanism develops far inland on thick crust over periods of 10–20 m.y. and involves relatively infrequent caldera-forming explosive eruptions of...
The Aleutian-Bering Climate Vulnerability Assessment
Aaron Poe, Thomas I. van Pelt, Jeremy S. Littell, editor(s)
2016, Report
Recent efforts to develop downscaled climate projections for the Bering Sea and Aleutians created an opportunity to better assess regional vulnerability to climate change. The Aleutian BeringClimate Vulnerability Assessment (ABCVA) was launched in 2014 to bring together regional science expertise and stakeholder interests in a rapid evaluation of the implications...
Invasive pythons, not anthropogenic stressors, explain the distribution of a keystone species
Adia R. Sovie, Robert A. McCleery, Robert J. Fletcher, Kristen M. Hart
2016, Biological Invasions (18) 3309-3318
Untangling the causes of native species loss in human-modified systems is difficult and often controversial. Evaluating the impact of non-native species in these systems is particularly challenging, as additional human perturbations often precede or accompany introductions. One example is the ongoing debate over whether mammal declines within Everglades National Park...
Along-strike variations in fault frictional properties along the San Andreas Fault near Cholame, California from joint earthquake and low-frequency earthquake relocations
Rebecca M. Harrington, Elizabeth S. Cochran, Emily M. Griffiths, Xiangfang Zeng, Clifford H. Thurber
2016, Bulletin of the Seismological Society of America (106) 319-326
Recent observations of low‐frequency earthquakes (LFEs) and tectonic tremor along the Parkfield–Cholame segment of the San Andreas fault suggest slow‐slip earthquakes occur in a transition zone between the shallow fault, which accommodates slip by a combination of aseismic creep and earthquakes (<15 km depth), and the deep fault, which accommodates slip...
Management-driven science synthesis: An evaluation of Everglades restoration trajectories
Stephen E Davis, James M. Beerens, Rena R. Borkhataria, Daniel L. Childers, Jay Choi, Steven M Davis, Carl Fitz, Evelyn Gaiser, Hiram Henriquez, Thomas E. Lodge, Judson Harvey, Frank Marshall, Bobby McCormick, Melodie Naja, Todd Osborne, Michael S. Ross, Jay Sah, Joel C. Trexler, Thomas Van Lent, Paul R. Wetzel
2016, Report
The Synthesis of Everglades Restoration andEcosystem Services (SERES) Project was funded in 2010 by the U.S. Department of Interior (DOI) through the Critical Ecosystem Studies Initiative (CESI) and established to synthesize the ever-growing body of Everglades scientific information with the goal of addressing topics that have hampered restoration since the...
Streamflow
Michael McHale, Robert W. Dudley, Glenn A. Hodgkins
2016, Report, Climate change indicators in the United States
This indicator describes trends in the amount of water carried by streams across the United States, as well as the timing of runoff associated with snowmelt....
Yellowstone grizzly bear investigations — Annual report of the Interagency Grizzly Bear Study Team 2015
Frank T. van Manen, Mark A. Haroldson, Bryn Karabensh, editor(s)
2016, 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 2015. The report also contains a summary of grizzly bear management actions to address conflict situations. ...
Distributions of small nongame fishes in the lower Yellowstone River
Michael B. Duncan, Robert G. Bramblett, Alexander V. Zale
2016, American Midland Naturalist (175) 1-23
The Yellowstone River is the longest unimpounded river in the conterminous United States. It has a relatively natural flow regime, which helps maintain diverse habitats and fish assemblages uncommon in large rivers elsewhere. The lower Yellowstone River was thought to support a diverse nongame fish assemblage including several species of...
Introduction: Rare Earth and Critical Elements in Ore Deposits
Philip L. Verplanck, Murray W. Hitzman
P. L. Verplanck, M.W. Hitzman, editor(s)
2016, Book chapter, Reviews in Economic Geology
No abstract available....
Tamarisk beetle (Diorhabda spp.) in the Colorado River basin: Synthesis of an expert panel forum
Benjamin R. Bloodworth, Patrick B. Shafroth, Anna A. Sher, Rebecca B. Manners, Daniel W. Bean, Matthew J. Johnson, Osvel Hinojosa-Huerta
2016, Report, Ruth Powell Hutchins Water Center scientific and technical report series
Executive Summary In 2001, the U.S. Department of Agriculture approved the release of a biological control agent, the tamarisk beetle (Diorhabda spp.), to naturally control tamarisk populations and provide a less costly, and potentially more effective, means of removal compared with mechanical and chemical methods. The invasive plant tamarisk (Tamarix spp.;...
Nutrient dynamics of the Delta: Effects on primary producers
Clifford N. Dahm, Alexander E. Parker, Anne E. Adelson, Mairgareth A. Christman, Brian A. Bergamaschi
2016, San Francisco Estuary and Watershed Science (14)
Increasing clarity of Delta waters, the emergence of harmful algal blooms, the proliferation of aquatic water weeds, and the altered food web of the Delta have brought nutrient dynamics to the forefront. This paper focuses on the sources of nutrients, the transformation and uptake of nutrients, and the links of...
Early Mesozoic geology in Virginia
Joseph P. Smoot
Christopher M. Bailey, W. Cullen Sherwood, L. Scott Eaton, David S. Powars, editor(s)
2016, Book chapter, The geology of Virginia (Virginia Museum of Natural History Special Publication 18)
No abstract available....
The potential carbon benefit of reforesting Hawai‘i Island non-native grasslands with endemic Acacia koa trees
Paul C. Selmants, Benjamin M. Sleeter, Nicholas Koch, James B. Friday
Rebekah Dickens Ohara, James B. Friday, editor(s)
2016, Conference Paper, Acacia koa in Hawaiʻi: Facing the future: 2016 Koa symposium proceedings
Large areas of forest in the tropics have been cleared and converted to pastureland. Hawai‘i Island is no exception, with over 100,000 ha of historically forested land now dominated by non-native grasses. Passive forest restoration has been unsuccessful because these grasslands tend to persist even after grazers have been removed,...
Measuring the impact of invasive species on popular culture: a case study based on toy turtles from Japan
Jeffrey E. Lovich, Katsuya Yamamoto
2016, Humans and Nature (27) 1-11
The red-eared slider turtle (Trachemys scripta elegans) is native to portions of the United States of America (USA) and adjacent northeastern Mexico. The bright and colorful hatchlings have long been popular as pets globally but numerous individuals have been released into the wild establishing populations in areas well outside their...
Drivers of Caribbean freshwater ecosystems and fisheries
Thomas J. Kwak, Augustin C. Engman, Jesse R. Fischer, Craig G. Lilyestrom
2016, Book chapter, Freshwater, fish and the future: Proceedings of the Global Cross-Sectoral Conference
No abstract available....
Earthquake probabilities for the Wasatch front region in Utah, Idaho, and Wyoming
Ivan G. Wong, William R. Lund, Christopher B. DuRoss, Patricia Thomas, Walter Arabasz, Anthony J. Crone, Michael D. Hylland, Nico Luco, Susan S. Olig, James C. Pechmann, Stephen Personius, Mark D. Petersen, David P. Schwartz, Robert B. Smith, Steve Rowman
2016, Report
In a letter to The Salt Lake Daily Tribune in September 1883, U.S. Geological Survey (USGS) geologist G.K. Gilbert warned local residents about the implications of observable fault scarps along the western base of the Wasatch Range. The scarps were evidence that large surface-rupturing earthquakes had occurred in the past...
Hydrologic effects on diameter growth phenology for Celtis laevigata and Quercus lyrata in the floodplain of the lower White River, Arkansas
Scott T. Allen, Wesley Cochran, Ken W. Krauss, Richard F. Keim, Sammy L. King
Callie Jo Schweitzer, Wayne K. Clatterbuck, Christopher M. Oswalt, editor(s)
2016, Conference Paper, Proceedings of the 18th Biennial Southern Silvicultural Research Conference: USDA Forest Service General Technical Report SRS-212
Bottomland hardwood (BLH) forests represent an extensive wetland system in the Mississippi Alluvial Valley and southeastern USA, and it is currently undergoing widespread transition in species composition. One such transition involves increased establishment of sugarberry (Celtis laevigata), and decreased establishment of overcup oak (Quercus lyrata). The ecological mechanisms that control...
Consequences of seasonal variation in reservoir water level for predatory fishes: linking visual foraging and prey densities
Stephen L. Klobucar, Phaedra E. Budy
2016, Canadian Journal of Fisheries and Aquatic Sciences (73) 53-64
In reservoirs, seasonal drawdown can alter the physical environment and may influence predatory fish performance. We investigated the performance of lake trout (Salvelinus namaycush) in a western reservoir by coupling field measurements with visual foraging and bioenergetic models at four distinct states (early summer, mid-summer, late summer, and fall). The...
Dominance of 'Gallionella capsiferriformans' and heavy metal association with Gallionella-like stalks in metal-rich pH 6 mine water discharge
Maria Fabisch, Gina Freyer, Carol A. Johnson, Georg Buchel, Denise M. Akob, Thomas R. Neu, Kirsten Kusel
2016, Geobiology (14) 68-90
Heavy metal-contaminated, pH 6 mine water discharge created new streams and iron-rich terraces at a creek bank in a former uranium-mining area near Ronneburg, Germany. The transition from microoxic groundwater with ~5 mm Fe(II) to oxic surface water may provide a suitable habitat for microaerobic iron-oxidizing bacteria (FeOB). In this study,...
