Shift in the Raman symmetric stretching band of N2, CO2, and CH4 as a function of temperature, pressure, and density
D. Matthew Sublett, Eszter Sendula, Hector Lamadrid, Matthew Steele-MacInnis, Georg Spiekermann, Robert Burruss, Robert J. Bodnar
2020, Journal of Raman Spectroscopy (51) 555-568
The Raman spectra of pure N2, CO2, and CH4 were analyzed over the range 10 to 500 bars and from −160°C to 200°C (N2), 22°C to 350°C (CO2), and −100°C to 450°C (CH4). At constant temperature, Raman peak position, including the more intense CO2 peak (ν+), decreases (shifts to lower wave number)...
The relative importance of wetland area versus habitat heterogeneity for promoting species richness and abundance of wetland birds in the Prairie Pothole Region, USA
Lisa H. Elliott, Lawrence Igl, Douglas H. Johnson
2020, The Condor (122)
Recent work has suggested that a tradeoff exists between habitat area and habitat heterogeneity, with a moderate amount of heterogeneity supporting greatest species richness. Support for this unimodal relationship has been mixed and has differed among habitats and taxa. We examined the relationship between habitat heterogeneity and species richness after...
Future losses of playa wetlands decrease network structure and connectivity of the Rainwater Basin, Nebraska
Bram H.F. Verheijen, Dana M. Varner, David A. Haukos
2020, Landscape Ecology (35) 453-467
ContextThe Rainwater Basin in south-central Nebraska once supported a complex network of ~ 12,000 spatially-isolated playa wetlands, but ~ 90% have been lost since European settlement. Future losses are likely and expected reductions in connectivity could further isolate populations, increasing local extinction rates of many wetland species. However, to what extent future...
Variation of annual apparent survival and detection rates with age, year, and individual identity in male Weddell seals (Leptonychotes weddellii) from long-term mark-recapture data
Jamie L. Brusa, Jay J. Rotella, Robert A. Garrott, J. Terrill Paterson, William Link
2020, Population Ecology (62) 134-150
Exploring age- and sex-specific survival rates provides insight regarding population behavior and life-history trait evolution, but many population studies exclude males. Accordingly, our understanding of how age-specific patterns of survival, including actuarial senescence, compare between the sexes remains inadequate. Using 35 years of mark-recapture data for 7,516...
Simulation of post-hurricane impact on invasive species with biological control management
Linhao Xu, Marya Claire Zdechlik, Melissa C. Smith, Min B. Rayamajhi, Don DeAngelis, Bo Zhang
2020, Discrete & Continuous Dynamical Systems-A (40) 4059-4071
Understanding the effects of hurricanes and other large storms on ecological communities and the post-event recovery in these communities can guide management and ecosystem restoration. This is particularly important for communities impacted by invasive species, as the hurricane may affect control efforts. Here we consider the effect of a hurricane...
Testing reproducibility of vitrinite and solid bitumen reflectance measurements in North American unconventional source-rock reservoir petroleum systems
Paul C. Hackley, Carla V. Araujo, Angeles G. Borrego, Antonis Bouzinos, Brian J. Cardott, H. Carvajal-Ortiz, Martha Rocio Lopez Cely, Vongani Chabalala, Peter J. Crosdale, Thomas D. Demchuk, Cortland F. Eble, Deolinda Flores, Agnieszka Furmann, Thomas Gentzis, Paula Goncalves, Carsten Guvad, M. Hamor-Vido, Iwona Jelonek, M. Johnston, Tatiana Juliao-Lemus, Stavros Kalaitzidis, Wayne Knowles, Jolanta Kus, Zhongsheng Li, Gordon Macleod, Maria Mastalerz, Taissa Rego Menezes, Seare Ocubalidet, Richard Orban, Walter Pickel, Paddy Ranasinghe, Joana Ribeiro, Olga Patricia Gomez Rojas, Ricardo Ruiz-Monroy, Jaques Schmidt, Abbas Seyedolali, Georgios Siavalas, Isabel Suarez-Ruiz, Carlos Vargas Vargas, Brett J. Valentine, Nicola Wagner, Bree Wrolson, Julian Esteban Jaramillo Zapata
2020, Marine and Petroleum Geology (114)
An interlaboratory study (ILS) was conducted to test reproducibility of vitrinite and solid bitumen reflectance measurements in six mudrock samples from United States unconventional source-rock reservoir petroleum systems. Samples selected from the Marcellus, Haynesville, Eagle Ford, Barnett, Bakken and Woodford are...
Fault fictions: Systematic biases in the conceptualization of fault-zone architecture
Zoe K Shipton, Jennifer J Roberts, Comrie Emma L, Yannick Kremer, Rebecca J Lunn, Jonathan Saul Caine
2020, Special Publications (496) 125-143
Mental models are a human's internal representation of the real world and have an important role in the way we understand and reason about uncertainties, explore potential options and make decisions. Mental models have not yet received much attention in geosciences, yet systematic biases can affect...
UAV-derived estimates of forest structure to inform ponderosa pine forest restoration
Adam Belmonte, Temuulen T. Sankey, Joel A. Biederman, John B. Bradford, Scott J. Goetz, Thomas Kolb, Travis Woolley
2020, Remote Sensing in Ecology and Conservation (6) 181-197
Restoring forest ecosystems has become an increasingly high priority for land managers across the American West. Millions of hectares of forest are in need of drastic yet strategic reductions in density (e.g., basal area). Meeting the restoration and management goals requires quantifying metrics of vertical and horizontal forest structure, which...
Traveling to thermal refuges during stressful temperatures leads to foraging constraints in a central-place forager
Catherine G. Haase, Robert J. Fletcher Jr., Daniel H. Slone, James P. Reid, Susan M. Butler
2020, Journal of Mammalogy (101) 271-280
Central-place foragers can be constrained by the distance between habitats. When an organism relies on a central place for thermal refuge, the distance to food resources can potentially constrain foraging behavior. We investigated the effect of distance between thermal refuges and forage patches of the cold-intolerant marine mammal, the Florida...
A comparison of the Trojan Y Chromosome strategy to harvesting models for eradication of nonnative species
Jingjing Lyu, Pamela J. Schofield, Kristen Reaver, Matthew Beauregard, Rana D. Parshad
2020, Natural Resource Modeling (33)
The Trojan Y Chromosome strategy (TYC) is a promising eradication method for biological control of nonnative species. The strategy works by manipulating the sex ratio of a population through the introduction of supermales that guarantee male offspring. In the current study, we compare the TYC method with a pure harvesting strategy. We...
Evaluation of ground‐motion models for U.S. Geological Survey seismic hazard models: 2018 Anchorage, Alaska, Mw 7.1 subduction zone earthquake sequence
Daniel E. McNamara, Emily Wolin, Peter M. Powers, Allison M. Shumway, Morgan P. Moschetti, John Rekoske, Eric M. Thompson, Charles Mueller, Mark D. Petersen
2020, Seismological Research Letters (91) 183-194
Instrumental ground‐motion recordings from the 2018 Anchorage, Alaska (Mw">Mw 7.1), earthquake sequence provide an independent data set allowing us to evaluate the predictive power of ground‐motion models (GMMs) for...
Seasonal variation in environmental and behavioural drivers of annual-cycle habitat selection in a nearshore seabird
J. S. Lamb, Y. G. Satgé, Patrick G.R. Jodice
2020, Diversity and Distributions (26) 254-266
AimConservation of highly mobile species often requires identifying locations or time periods of elevated vulnerability. Since both extrinsic habitat conditions and intrinsic behavioural and energetic requirements contribute to habitat use at the landscape scale, identifying spatial or temporal foci for conservation intervention requires understanding how habitat needs...
Successful molecular detection studies require clear communication among diverse research partners
B. A. Mosher, R. F. Bernard, Jeffrey M. Lorch, D. A. W. Miller, Katherine L. D. Richgels, C. LeAnn White, Evan H. Campbell Grant
2020, Frontiers in Ecology and the Environment (18) 43-51
Molecular detection techniques are powerful tools used in ecological applications ranging from diet analyses to pathogen surveillance. Research partnerships that use these tools often involve collaboration among professionals with expertise in field biology, laboratory techniques, quantitative modeling, wildlife disease, and natural resource management. However, in many cases, each of these...
Dimensional effects of inter-phase mass transfer on attenuation of structurally trapped gaseous carbon dioxide in shallow aquifers
Jakub Solovsky, Radek Fucik, Michelle R. Plampin, Tissa H. Illangasekare, Jiri Mikyska
2020, Journal of Computational Physics (405)
Based on experimental evidence and using mathematical modeling, inter-phase mass transfer processes of CO2 exsolving from and dissolving into water in heterogeneous porous media are investigated under two fundamentally different flow conditions: in a quasi one dimensional vertical column and in a two-dimensional tank with a lateral background water flow, both...
Declining aluminum toxicity and the role of exposure duration on brook trout mortality in acidified streams of the Adirondack Mountains, New York, USA
Barry P. Baldigo, Scott George, Gregory B. Lawrence, Eric A. Paul
2020, Environmental Toxicology and Chemistry (39) 623-636
Mortality of brook trout Salvelinus fontinalis and water chemistry were characterized in 6 headwater streams in the western Adirondacks of New York during spring 2015, 2016, and 2017 and compared with results from analogous tests done between 1980 and 2003 in many of the same streams, to assess temporal changes in toxicity...
Toward ecosystem accounts for Rwanda: Tracking 25 years of change in potential supply and flows of ecosystem services
Kenneth J. Bagstad, Jane Carter Ingram, Glenn-Marie Lange, Michel K. Masozera, Zachary H. Ancona, Mediatrice Bana, Desire Kabogo, Bernard Musana, Nsharwasi Leon Nabahungu, Emmanuel Rukundo, Evariste Rutebuka, Stephen Polasky, Denis Rugege, Claudine Uwera
2020, People and Nature (1) 163-188
1. Rwanda, a small but rapidly developing central African nation, has undertaken development of natural capital accounts to better inform its economic development through the World Bank’s Wealth Accounting and Valuation of Ecosystem Services (WAVES) Partnership. In this paper, we develop ecosystem service (ES) models to quantify the physical supply...
Parsing the effects of demography, climate, and management on recurrent brucellosis outbreaks in elk
Gavin G. Cotterill, Paul C. Cross, Jerod A. Merkle, JD Rogerson, BM Scurlock, Johan T. Du Toit
2020, Journal of Applied Ecology (2) 379-389
1. Zoonotic pathogens can harm human health and well-being directly or by impacting livestock. Pathogens that spillover from wildlife can also impair conservation efforts if humans perceive wildlife as pests. Brucellosis, caused by the bacterium Brucella abortus, circulates in elk and bison herds of the Greater Yellowstone Ecosystem and poses...
Drivers of landscape change in the northwest boreal region
Carl Markon, Amanda Sesser, Aimee P. Rockhill, Dawn R Magness, Don Reid, John DeLapp, Phil Burton, Eric Schroff, Valerie Barber, editor(s)
2020, Book
The northwest boreal region (NWB) of North America is a land of extremes. Extending more than 1.3 million square kilometers (330 million acres), it encompasses the entire spectrum between inundated wetlands below sea level to the tallest peak in North America. Permafrost gradients span from nearly continuous to absent. Boreal...
Predicting wildlife distribution patterns in New England USA with expert elicitation techniques
Schuyler B. Pearman-Gillman, Jonathan E. Katz, Ruth M. Mickey, James D. Murdoch, Therese M. Donovan
2020, Global Ecology and Conservation (21)
Understanding the impacts of landscape change on species distributions can help inform decision-making and conservation planning. Unfortunately, empirical data that span large spatial extents across multiple taxa are limited. In this study, we used expert elicitation techniques to develop species distribution models (SDMs) for harvested wildlife species (n = 10) in the New England region...
Energetic status of Alaskan Chinook Salmon: Interpopulation comparisons and predictive modeling using bioelectrical impedance analysis
Kristin R. Courtney, Jeffrey A. Falke, M. Keith Cox, Jeff Nichols
2020, North American Journal of Fisheries Management (40) 209-224
Adult Pacific Salmon Oncorhynchus spp. undertake energetically demanding migrations wherein they must have adequate energy reserves to survive to spawning locations and reproduce. Proximate analysis provides insight into available energy stores (e.g., lipids), but the ability to non-lethally monitor energetic status may be useful for managers to better understand how...
Brook trout (Salvelinus fontinalis) movement and survival after removal of two dams on the West Branch of the Wolf River, Wisconsin
Emma G. Easterly, Daniel A. Isermann, Joshua K. Raabe, Joshua W. Pyatskowit
2020, Ecology of Freshwater Fish (29) 311-324
Dam removals allow fish to access habitats that may provide ecological benefits and risks, but the extent of fish movements through former dam sites has not been thoroughly evaluated for many species. We installed stationary PIT antennas in 2016 and 2017 to evaluate movements and survival of brook trout Salvelinus fontinalis in...
Cost-effective fuel treatment planning: A theoretical justification and case-study
Jason R. Kreitler, Matthew Thompson, Nicole Vaillant, Todd Hawbaker
2020, International Journal of Wildland Fire (29) 42-56
Modelling the spatial prioritisation of fuel treatments and their net effect on values at risk is an important area for applied work as economic damages from wildfire continue to grow. We model and demonstrate a cost-effective fuel treatment planning algorithm using two ecosystem services as benefits for which fuel treatments...
Spatially explicit models of seasonal habitat for greater sage‐grouse at broad spatial scales: Informing areas for management in Nevada and northeastern California
Peter S. Coates, Brianne E. Brussee, Mark A. Ricca, John Severson, Michael L. Casazza, K. Benjamin Gustafson, Shawn P. Espinosa, Scott C. Gardner, David J Delahunty
2020, Ecology and Evolution (10) 104-118
Defining boundaries of species' habitat across broad spatial scales is often necessary for management decisions, and yet challenging for species that demonstrate differential variation in seasonal habitat use. Spatially explicit indices that incorporate temporal shifts in selection can help overcome such challenges, especially for species of high conservation concern. Greater...
Dispersal asymmetry in a two-patch system with source–sink populations
Hong Wu, Yuanshi Wang, Yufeng Li, Donald L. DeAngelis
2020, Theoretical Population Biology (131) 54-65
This paper analyzes source–sink systems with asymmetric dispersal between two patches. Complete analysis on the models demonstrates a mechanism by which the dispersal asymmetry can lead to either an increased total size of the species population in two patches, a decreased total size with persistence in the patches, or even...
The future of barriers and trapping methods in the sea lamprey (Petromyzon marinus) control program in the Laurentian Great Lakes
Scott M. Miehls, Paul Sullivan, Michael Twohey, Jessica Barber, Rodney McDonald
2020, Reviews in Fish Biology and Fisheries (30) 1-24
A major duty of the Great Lakes Fishery Commission (GLFC), created in 1955, was the development a program of eradication or management of sea lamprey populations in the Great Lakes for the protection of the Great Lakes fishery. Beginning in the 1980s the GLFC shifted sea lamprey control to an...
