A comparison of age, size, and fecundity of harvested and reference White Sucker populations
Meg Begley, Stephen M. Coghlan Jr., Joseph D. Zydlewski
2017, North American Journal of Fisheries Management (37) 510-523
White Suckers Catostomus commersonii are an important source of fresh bait for the Maine lobster fishery. The Maine Department of Inland Fisheries and Wildlife began issuing commercial harvest permits in 1991, without reporting requirements or limits on the number of permits. There is recent concern that overfishing may be occurring. To infer...
The future demographic niche of a declining grassland bird fails to shift poleward in response to climate change
Lisa A. McCauley, Christine Ribic, Lars Y. Pomara, Benjamin Zuckerberg
2017, Landscape Ecology (32) 807-821
ContextTemperate grasslands and their dependent species are exposed to high variability in weather and climate due to the lack of natural buffers such as forests. Grassland birds are particularly vulnerable to this variability, yet have failed to shift poleward in response to recent climate change...
Microbial methane from in situ biodegradation of coal and shale: A review and reevaluation of hydrogen and carbon isotope signatures
David S. Vinson, Neal E. Blair, Anna M. Martini, Steve Larter, William H. Orem, Jennifer C. McIntosh
2017, Chemical Geology (453) 128-145
Stable carbon and hydrogen isotope signatures of methane, water, and inorganic carbon are widely utilized in natural gas systems for distinguishing microbial and thermogenic methane and for delineating methanogenic pathways (acetoclastic, hydrogenotrophic, and/or methylotrophic methanogenesis). Recent studies of coal and shale gas systems have characterized in situ microbial communities...
Mitigating future avian malaria threats to Hawaiian forest birds from climate change
Wei Liao, Carter T. Atkinson, Dennis LaPointe, Michael D. Samuel
2017, PLoS ONE (12) 1-25
Avian malaria, transmitted by Culex quinquefasciatus mosquitoes in the Hawaiian Islands, has been a primary contributor to population range limitations, declines, and extinctions for many endemic Hawaiian honeycreepers. Avian malaria is strongly influenced by climate; therefore, predicted future changes are expected to expand transmission into higher elevations and intensify and...
Field-scale observations of a transient geobattery resulting from natural attenuation of a crude oil spill
Jeffrey Heenan, Dimitris Ntarlagiannis, Lee Slater, Carol Beaver, S. Rossbach, A. Revil, E.A. Atekwana, Barbara A. Bekins
2017, Journal of Geophysical Research G: Biogeosciences (122) 918-929
We present evidence of a geobattery associated with microbial degradation of a mature crude oil spill. Self-potential measurements were collected using a vertical array of nonpolarizing electrodes, starting at the land surface and passing through the smear zone where seasonal water table fluctuations have resulted in the coating of hydrocarbons...
Evidence for strong lateral seismic velocity variation in the lower crust and upper mantle beneath the California margin
Voon Lai, Robert Graves, Shengji Wei, Don Helmberger
2017, Earth and Planetary Science Letters 202-211
Regional seismograms from earthquakes in Northern California show a systematic difference in arrival times across Southern California where long period (30–50 seconds) SH waves arrive up to 15 seconds earlier at stations near the coast compared with sites towards the east at similar epicentral distances. We attribute this time difference...
Contrasting latitudinal patterns of life-history divergence in two genera of new world thrushes (Turdinae)
Andy J. Boyce, Thomas E. Martin
2017, Journal of Avian Biology (48) 581-590
Several long-standing hypotheses have been proposed to explain latitudinal patterns of life-history strategies. Here, we test predictions of four such hypotheses (seasonality, food limitation, nest predation and adult survival probability) by examining life-history traits and age-specific mortality rates of several species of thrushes (Turdinae) based on field studies at temperate...
The 3.6 ka Aniakchak tephra in the Arctic Ocean: A constraint on the Holocene radiocarbon reservoir age in the Chukchi Sea
Christof Pearce, Aron Varhelyi, Stefan Wastegard, Francesco Muschitiello, Natalia Barrientos Macho, Matt O’Regan, Thomas M. Cronin, Laura Gemery, Igor Semiletov, Jan Backman, Martin Jakobsson
2017, Climate of the Past (13) 303-316
The caldera-forming eruption of the Aniakchak volcano in the Aleutian Range on the Alaskan Peninsula at 3.6 cal kyr BP was one of the largest Holocene eruptions worldwide. The resulting ash is found as a visible sediment layer in several Alaskan sites and as a cryptotephra on Newfoundland and Greenland. This large...
Multiple models guide strategies for agricultural nutrient reductions
Donald Scavia, Margaret Kalcic, Rebecca Logsdon Muenich, Jennifer Read, Noel Aloysius, Isabella Bertani, Chelsie Boles, Remegio Confesor, Joseph DePinto, Marie Gildow, Jay Martin, Todd Redder, Dale M. Robertson, Scott P. Sowa, Yu-Chen Wang, Haw Yen
2017, Frontiers in Ecology and the Environment (15) 126-132
In response to degraded water quality, federal policy makers in the US and Canada called for a 40% reduction in phosphorus (P) loads to Lake Erie, and state and provincial policy makers in the Great Lakes region set a load-reduction target for the year 2025. Here, we configured five separate...
The deadly fisheries safety issue no one discusses
Scott A. Bonar
2017, Fisheries (April 2017)
No abstract available....
Temporospatial dynamics and public health significance of bacterial flora identified on a major leatherback turtle (Dermochelys coriacea) nesting beach in the Southern Caribbean
Ayanna Carla N. Phillips, Johanna Couteau, Stacy Rajh, Neville Stewart, Antonio Watson, Adam Jehu, Hamish Asmath, Chandrashekhar Unakal, Francis Dziva, Ridley Holder, Raymond R. Carthy
2017, Marine Ecology (38)
Grande Riviere beach, on the island of Trinidad, supports the largest nesting population of leatherback turtles in the Caribbean region. Throughout the nesting season, nests are naturally disturbed by newly nesting females, resulting in egg breakage and loss of some nest viability. This environment is ideal for the growth and...
Numerical simulation of large-scale bed load particle tracer advection-dispersion in rivers with free bars
Toshiki Iwasaki, Jonathan M. Nelson, Yasuyuki Shimizu, Gary Parker
2017, Journal of Geophysical Research F: Earth Surface (122) 847-874
Asymptotic characteristics of the transport of bed load tracer particles in rivers have been described by advection-dispersion equations. Here we perform numerical simulations designed to study the role of free bars, and more specifically single-row alternate bars, on streamwise tracer particle dispersion. In treating the conservation of tracer particle mass,...
Estimating occupancy probability of moose using hunter survey data
Nathan J. Crum, Angela K. Fuller, Christopher S. Sutherland, Evan G. Cooch, Jeremy E. Hurst
2017, Journal of Wildlife Management (81) 521-534
Monitoring rare species can be difficult, especially across large spatial extents, making conventional methods of population monitoring costly and logistically challenging. Citizen science has the potential to produce observational data across large areas that can be used to monitor wildlife distributions using occupancy models. We used citizen science (i.e., hunter...
Classification of California streams using combined deductive and inductive approaches: Setting the foundation for analysis of hydrologic alteration
Matthew I. Pyne, Daren M. Carlisle, Christopher P. Konrad, Eric D. Stein
2017, Ecohydrology (10)
Regional classification of streams is an early step in the Ecological Limits of Hydrologic Alteration framework. Many stream classifications are based on an inductive approach using hydrologic data from minimally disturbed basins, but this approach may underrepresent streams from heavily disturbed basins or sparsely gaged arid regions. An alternative is...
Grand challenges in understanding the interplay of climate and land changes
Shuguang Liu, Ben Bond-Lamberty, Lena R. Boysen, James D. Ford, Andrew Fox, Kevin Gallo, Jerry L. Hatfield, Geoffrey M. Henebry, Thomas G. Huntington, Zhihua Liu, Thomas R. Loveland, Richard J. Norby, Terry L. Sohl, Allison L. Steiner, Wenping Yuan, Zhao Zhang, Shuqing Zhao
2017, Earth Interactions (21) 1-43
Half of Earth’s land surface has been altered by human activities, creating various consequences on the climate and weather systems at local to global scales, which in turn affect a myriad of land surface processes and the adaptation behaviors. This study reviews the status and major knowledge gaps in the...
Inter-nesting movements and habitat-use of adult female Kemp’s ridley turtles in the Gulf of Mexico
Donna J. Shaver, Kristen M. Hart, Ikuko Fujisaki, David N. Bucklin, Autumn Iverson, Cynthia Rubio, Thomas F. Backof, Patrick M. Burchfield, Raul de Jesus Gonzales Diaz Miron, Peter H. Dutton, Amy Frey, Jaime Peña, Daniel Gomez Gamez, Hector J. Martinez, Jaime Ortiz
2017, PLoS ONE (12)
Species vulnerability is increased when individuals congregate in restricted areas for breeding; yet, breeding habitats are not well defined for many marine species. Identification and quantification of these breeding habitats are essential to effective conservation. Satellite telemetry and switching state-space modeling (SSM) were used to define inter-nesting habitat of endangered...
Hazus® estimated annualized earthquake losses for the United States
Kishor S. Jaiswal, Doug Bausch, Jesse Rozelle, John Holub, Sean McGowan
2017, Report
Large earthquakes can cause social and economic disruption that can be unprecedented to any given community, and the full recovery from these impacts may or may not always be achievable. In the United States (U.S.), the 1994 M6.7 Northridge earthquake in California remains the third costliest disaster in U.S. history;...
Inner-shelf ocean dynamics and seafloor morphologic changes during Hurricane Sandy
John C. Warner, William C. Schwab, Jeffrey H. List, Ilgar Safak, Maria Liste, Wayne E. Baldwin
2017, Continental Shelf Research (138) 1-18
Hurricane Sandy was one of the most destructive hurricanes in US history, making landfall on the New Jersey coast on Oct 30, 2012. Storm impacts included several barrier island breaches, massive coastal erosion, and flooding. While changes to the subaerial landscape are relatively easily observed, storm-induced changes to the adjacent...
2010-2015 Juvenile fish ecology in the Nisqually River Delta and Nisqually Reach Aquatic Reserve
Sayre Hodgson, Christopher S. Ellings, Steve P. Rubin, Michael C. Hayes, Walker Duval, Eric E. Grossman
2017, Salmon Recovery Program Technical Report 2016-1
The return of tidal inundation to over 750 acres of the U. S. Fish and Wildlife Service Billy Frank Jr. Nisqually National Wildlife Refuge (NNWR) in fall of 2009 was the crowning moment in the effort to protect and restore the Nisqually Delta. The Nisqually NWR project complemented three earlier...
The Evergreen basin and the role of the Silver Creek fault in the San Andreas fault system, San Francisco Bay region, California
Robert C. Jachens, Carl M. Wentworth, Russell W. Graymer, Robert Williams, David A. Ponce, Edward A. Mankinen, William J. Stephenson, Victoria E. Langenheim
2017, Geosphere (13) 269-286
The Evergreen basin is a 40-km-long, 8-km-wide Cenozoic sedimentary basin that lies mostly concealed beneath the northeastern margin of the Santa Clara Valley near the south end of San Francisco Bay (California, USA). The basin is bounded on the northeast by the strike-slip Hayward fault and an approximately parallel subsurface...
Standard methods for sampling freshwater fishes: Opportunities for international collaboration
Scott A. Bonar, Norman Mercado-Silva, Wayne A. Hubert, Beard Jr., Goran Dave, Jan Kubecka, Brian D. S. Graeb, Nigel P. Lester, Mark T. Porath, Ian J. Winfield
2017, Fisheries (42) 150-156
With publication of Standard Methods for Sampling North American Freshwater Fishes in 2009, the American Fisheries Society (AFS) recommended standard procedures for North America. To explore interest in standardizing at intercontinental scales, a symposium attended by international specialists in freshwater fish sampling was convened at the 145th Annual AFS Meeting in Portland,...
Circumpolar analysis of the Adélie Penguin reveals the importance of environmental variability in phenological mismatch
Casey Youngflesh, Stephanie Jenouvrier, Yun Li, Rubao Ji, David G. Ainley, Grant Ballard, Christophe Barbraud, Karine Delord, Katie M. Dugger, Loiuse M. Emmerson, William R. Fraser, Jefferson T. Hinke, Phil O’B. Lyver, Silvia Olmastroni, Colin J. Southwell, Susan G. Trivelpiece, Wayne Z. Trivelpiece, Heather J. Lynch
2017, Ecology (98) 940-951
Evidence of climate-change-driven shifts in plant and animal phenology have raised concerns that certain trophic interactions may be increasingly mismatched in time, resulting in declines in reproductive success. Given the constraints imposed by extreme seasonality at high latitudes and the rapid shifts in phenology seen in the Arctic, we would...
Coping with historic drought in California rangelands: Developing a more effective institutional response
Joel R. Brown, Pelayo Alvarez, Kristin B. Byrd, Helena Deswood, Emile Elias, Sheri Spiegal
2017, Rangelands (39) 73-78
Drought response is widely varied depending on both the characteristics of the drought and the ability of individual ranchers to respond.Assistance from institutions during drought has not typically considered preemptive, during, and post-drought response as a strategic approach, which recognizes biophysical, sociological, and economic complexities of drought.A USDA Southwest Climate...
Methodological considerations for detection of terrestrial small-body salamander eDNA and implications for biodiversity conservation
Donald M. Walker, Jacob E. Leys, Kelly E. Dunham, Joshua C. Oliver, Emily E. Schiller, Kelsey S. Stephenson, John T. Kimrey, Jessica Wooten, Mark W. Rogers
2017, Molecular Ecology Resources (17) 1223-1230
Environmental DNA (eDNA) can be used as an assessment tool to detect populations of threatened species and provide fine-scale data required to make management decisions. The objectives of this project were to use quantitative PCR (qPCR) to: (i) detect spiked salamander DNA in soil, (ii) quantify eDNA degradation over time,...
Relationships among catch, angler catisfaction, and fish assemblage characteristics of an urban small impoundment fishery
Tomas J. Ivasauskas, Wilson N. Xiong, Augustin C. Engman, Jesse R. Fischer, Thomas J. Kwak, Kirk R. Rundle
2017, Journal of the Southeastern Association of Fish and Wildlife Agencies (4) 31-38
Urban fisheries provide unique angling opportunities for people from traditionally underrepresented demographics. Lake Raleigh is a 38-ha impoundment located on the North Carolina State University campus in Raleigh. Like many urban fisheries, little is known about angler use and satisfaction or how angling catch rate is related to fish availability...
