Resource selection functions based on hierarchical generalized additive models provide new insights into individual animal variation and species distribution
Jennifer D McCabe, John Clare, Tricia A. Miller, Todd E. Katzner, Jeff Cooper, Scott G. Somershoe, David Hanni, Christine A. Kelly, Robert Sargent, Eric C. Soehren, Carrie Threadgill, Mercedes Maddox, Jonathan Stober, Mark S. Martell, Thomas Salo, Andrew Berry, Michael J. Lanzone, Melissa A. Braham, Christopher J.W. McClure
2021, Ecography (44) 1756-1768
Habitat selection studies are designed to generate predictions of species distributions or inference regarding general habitat associations and individual variation in habitat use. Such studies frequently involve either individually indexed locations gathered across limited spatial extents and analyzed using resource selection functions (RSFs) or spatially extensive...
Testing a generalizable machine learning workflow for aquatic invasive species on Rainbow Trout (Oncorhynchus mykiss) in northwest Montana
Sean C. Carter, Charles B. van Rees, Brian K. Hand, Clint C. Muhlfeld, Gordon Luikart, John S Kimball
2021, Frontiers in Big Data (October 2021)
Biological invasions are accelerating worldwide, causing major ecological and economic impacts in aquatic ecosystems. The urgent decision-making needs of invasive species managers can be better met by the integration of biodiversity big data with large-domain models and data-driven products. Remotely sensed data products can be combined with existing invasive species...
The effects of ENSO and the North American monsoon on mast seeding in two Rocky Mountain conifer species
Andreas Wion, Ian S. Pearse, Kyle C. Rodman, Thomas T. Veblen, Miranda D. Redmond
2021, Philosophical Transactions of the Royal Society B: Biological Sciences (376)
We aimed to disentangle the patterns of synchronous and variable cone production (i.e. masting) and its relationship to climate in two conifer species native to dry forests of western North America. We used cone abscission scars to reconstruct ca 15 years of recent cone production in Pinus edulis and Pinus ponderosa, and used redundancy analysis...
The ecology and evolution of synchronized reproduction in long-lived plants
Mario B. Pesendorfer, Davide Ascoli, Michal Bogdziewicz, Andrew Hacket-Pain, Ian S. Pearse, Giorgio Vacchiano
2021, Philosophical Transactions of the Royal Society B: Biological Sciences (376)
Populations of many long-lived plants exhibit spatially synchronized seed production that varies extensively over time, so that seed production in some years is much higher than on average, while in others, it is much lower or absent. This phenomenon termed masting or mast seeding has important consequences for plant reproductive success, ecosystem dynamics and...
Machine learning predictions of nitrate in groundwater used for drinking supply in the conterminous United States
Katherine Marie Ransom, Bernard T. Nolan, Paul E. Stackelberg, Kenneth Belitz, Miranda S. Fram
2021, Science of the Total Environment
Groundwater is an important source of drinking water supplies in the conterminous United State (CONUS), and presence of high nitrate concentrations may limit usability of groundwater in some areas because of the...
Modes of climate variability bridge proximate and evolutionary mechanisms of masting
Davide Ascoli, Andrew Hacket-Pain, Ian S. Pearse, Giorgio Vacchiano, Susanna Corti, Paolo Davini
2021, Philosophical Transactions of the Royal Society B: Biological Sciences (376)
There is evidence that variable and synchronous reproduction in seed plants (masting) correlates to modes of climate variability, e.g. El Niño Southern Oscillation and North Atlantic Oscillation. In this perspective, we explore the breadth of knowledge on how climate modes control reproduction in major masting species throughout Earth's biomes. We...
Active virus-host interactions at sub-freezing temperatures in Arctic peat soil
Gareth Trubl, Jeffrey A Kimbrel, Jose Liquet-Gonzalez, Erin E. Nuccio, Peter K. Weber, Jennifer Pett-Ridge, Janet K. Jansson, Mark Waldrop, Steve Blazewicz
2021, Microbiome (9)
BackgroundWinter carbon loss in northern ecosystems is estimated to be greater than the average growing season carbon uptake and is primarily driven by microbial decomposers. Viruses modulate microbial carbon cycling via induced mortality and metabolic controls, but it is unknown whether viruses are active under winter conditions (anoxic and...
Understanding mast seeding for conservation and land management
Ian S. Pearse, Andreas Wion, Angela Gonzalez, Mario B. Pesendorfer
2021, Philosophical Transactions of the Royal Society B: Biological Sciences (376)
Masting, the intermittent and synchronous production of large seed crops, can have profound consequences for plant populations and the food webs that are built on their seeds. For centuries, people have recorded mast crops because of their importance in managing wildlife populations. In the past 30 years, we have begun...
Potential for carbon and nitrogen sequestration by restoring tidal connectivity and enhancing soil surface elevations in denuded and degraded south Florida mangrove ecosystems
N. Cormier, Ken Krauss, Amanda Demopoulos, Brita J. Jessen, Jennifer McClain Counts, Andrew From, Laura L. Flynn
Ken W. Krauss, Zhiliang Zhu, Camille L. Stagg, editor(s)
2021, Book chapter, Wetland carbon and environmental management
Mangroves are tidally dependent wetlands that are influenced often by alterations in hydrology associated with coastal developments that impact their distribution, health, and function. Alteration in frequency, depth, duration, and seasonality of tidal inundation can lead to changes in forest condition, although these stress-adapted ecosystems may persist for many years...
Carbon fluxes and potential soil accumulation within Greater Everglades cypress and pine forested wetlands
W. Barclay Shoemaker, Frank E. Anderson, Andre Daniels, Matt Sirianni
Zhiliang Zhu, Ken W. Krauss, Camille L. Stagg, editor(s)
2021, Book chapter, Wetland carbon and environmental management
In forested wetlands, accumulation of organic matter in soil is partly governed by carbon fluxes where photosynthesis, respiration, lateral advection of waterborne carbon, fire-derived carbon emissions, and methanogenesis are balanced by changes in stored carbon. Stored carbon can eventually accumulate as soil over time if net primary productivity exceeds biomass...
Modeling the impacts of hydrology and management on carbon balance at the Great Dismal Swamp, Virginia and North Carolina, USA
Rachel Sleeter
Ken W. Krauss, Zhiliang Zhu, Camille L. Stagg, editor(s)
2021, Book chapter, Wetland carbon and environmental management
The impact of drainage on the stability of peatland carbon sinks is well known; however, much less is understood regarding the way active management of the water-table affects carbon balance. In this study, we determined the carbon balance in the Great Dismal Swamp, a large, forested peatland in the southeastern...
Land management strategies influence soil organic carbon stocks of prairie potholes of North America
Sheel Bansal, Brian Tangen, Robert A. Gleason, Pascal Badiou, Irena F. Creed
2021, Book chapter, Wetland Carbon and Environmental Management
Soil organic carbon (SOC) stocks of Prairie Pothole Region (PPR) wetlands in the central plains of Canada and the United States are highly variable due to natural variation in biota, soils, climate, hydrology, and topography. Land-use history (cropland, grassland) and land-management practices (drainage, restoration) also affect SOC...
Aquatic foods to nourish nations
Christopher D. Golden, J. Zachary Koehn, Alon Shepon, Simone Passarelli, Christopher M. Free, Daniel Viana, Holger Matthey, Jacob G. Eurich, Jessica A. Gephart, Etienne Fluet-Chouinard, Elizabeth A. Nyboer, Abigail Lynch, Marian Kjellevold, Sabri Bromage, Pierre Charlebois, Manuel Barange, Stefania Vannuccini, Ling Cao, Kristin Kleisner, Eric Rimm, Goodarz Danaei, Camille DeDisto, Heather Kelahan, Kathryn J. Fiorella, David C. Little, Edward H. Allison, Jessica Fanzo, Shakuntala H. Thilsted
2021, Nature (598) 315-320
Despite contributing to healthy diets for billions of people, aquatic foods are often undervalued as a nutritional solution because their diversity is often reduced to the protein and energy value of a single food type (‘seafood’ or ‘fish’)<a id="ref-link-section-d16285678e1131" title="Golden, C. D. et al. Nutrition: fall...
Contribution of deep-sourced carbon from hydrocarbon seeps to sedimentary organic carbon: Evidence from radiocarbon and stable isotope geochemistry
Dong Feng, John Pohlman, Jorn Peckmann, Yuedong Sun, Yu Hu, Harry Roberts, Duofu Chen
2021, Chemical Geology (585)
Sulfate-driven anaerobic oxidation of methane (AOM) limits the release of methane from marine sediments and promotes the formation of carbonates close to the seafloor in seepage areas along continental margins. It has been established that hydrocarbon seeps are a source of methane, dissolved inorganic carbon, and dissolved organic carbon to marine environments. However, questions remain about the contribution of deep-sourced...
Developing climate resilience in aridlands using rock detention structures as green infrastructure
Laura M. Norman, Benjamin L. Ruddell, Deborah Tosline, Michael Fell, Blair P. Greimann, Jay Cederberg
2021, Sustainability (13)
The potential of ecological restoration and green infrastructure has been long suggested in the literature as adaptation strategies for a changing climate, with an emphasis on revegetation and, more recently, carbon sequestration and stormwater management. Tree planting and “natural” stormwater detention structures such as bioswales, stormwater detention...
A new approach to evaluate and reduce uncertainty of model-based biodiversity projections for conservation policy formulation
Bonnie Myers, Sarah R. Weiskopf, Alexey N. Shiklomanov, Simon Ferrier, Ensheng Weng, Kimberly Ann Casey, Michael Harfoot, Stephen Jackson, Allison K. Leidner, Timothy M. Lenton, Gordon Luikart, Hiroyuki Matsuda, Nathalie Pettorelli, Isabel M. D. Rosa, Alexander C. Ruane, Gabriel B. Senay, Shawn P. Serbin, Derek P. Tittensor, Beard Jr.
2021, BioScience (71) 1261-1273
Biodiversity projections with uncertainty estimates under different climate, land-use, and policy scenarios are essential to setting and achieving international targets to mitigate biodiversity loss. Evaluating and improving biodiversity predictions to better inform policy decisions remains a central conservation goal and challenge. A comprehensive strategy to evaluate and reduce uncertainty...
Integrating satellite thermal imagery and global weather datasets for operational actual evapotranspiration mapping and drought early warning applications
Gabriel B. Senay, Stefanie Bohms, Claudia Young, Cheryl L. Holen, Maxwell Thomas Mcelhone, Michael Budde, James Rowland
2021, Conference Paper
The development and online access to an operational global actual evapotranspiration (ETa) is described. The global ETa is generated using the Operational Simplified Surface Energy Balance (SSEBop) model with inputs from the Moderate Resolution Imaging Spectroradiometer (MODIS) land surface temperature and gridded weather datasets. Global and regional ETa, as well...
Disentangling stationary and dynamic estuarine fish habitat to inform conservation: Species-specific responses to physical habitat and water quality in San Francisco Estuary
Frederick V. Feyrer, Matthew J. Young, Brock Huntsman, Larry R. Brown
2021, Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science (13) 548-563
Estuaries represent critical aquatic habitat that connects surface water distributed between Earth’s landmasses and oceans. They are dynamic transitional ecosystems, which provide important habitat for fishes and other aquatic organisms. Effective conservation of species inhabiting estuaries requires knowledge of the habitat features that drive their abundance...
Characterizing downstream migration timing of American Eels using commercial catch data in the Penobscot and Delaware rivers
Daniel M. Weaver, Douglas B. Sigourney, Mari-Beth Delucia, Joseph D. Zydlewski
2021, Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science (13) 534-547
Adult “silver-phase” American Eels Anguilla rostrata were a focus of commercial fisheries in the 1970s and 1980s, but stocks have been depleted due to many anthropogenic factors. One significant source of mortality occurs during the downstream migration of eels when passing through turbines at hydroelectric facilities. We sought to construct a model...
Earthquake magnitude distributions on northern Caribbean faults from combinatorial optimization models
Eric L. Geist, Uri S. ten Brink
2021, JGR Solid Earth (126)
On-fault earthquake magnitude distributions are calculated for northern Caribbean faults using estimates of fault slip and regional seismicity parameters. Integer programming, a combinatorial optimization method, is used to determine the optimal spatial arrangement of earthquakes sampled from a truncated Gutenberg-Richter distribution that minimizes the global misfit in...
A new analysis of caldera unrest through the integration of geophysical data and FEM modeling: The Long Valley caldera case study
Fabio Pulvirenti, Francesca Silverii, Maurizio Battaglia
2021, Remote Sensing (13)
The Long Valley Caldera, located at the eastern edge of the Sierra Nevada range in California, has been in a state of unrest since the late 1970s. Seismic, gravity and geodetic data strongly suggest that the source of unrest is an intrusion beneath the caldera resurgent dome....
Differential landscape use by forest owls two years after a mixed-severity wildfire
Leila S. Duchac, Damon B. Lesmeister, Katie M. Dugger, Raymond J. Davis
2021, Ecosphere (12)
Owls are important avian predators in forested systems, but little is known about landscape use by most forest-adapted owl species in environments impacted by mixed-severity wildfire. To better understand species-specific patterns of post-wildfire landscape use within an owl guild, we used passive acoustic monitoring using autonomous recording units. The technology...
Patch utilization and flower visitations by wild bees in a honey bee-dominated, grassland landscape
Clint Otto, Larissa L. Bailey, Autumn H. Smart
2021, Ecology and Evolution (11) 14888-14904
Understanding habitat needs and patch utilization of wild and managed bees has been identified as a national research priority in the United States. We used occupancy models to investigate patterns of bee use across 1030 transects spanning a gradient of floral resource abundance and richness and distance from apiaries in...
Impact of precipitation and increasing temperatures on drought trends in eastern Africa
Sarah F. Kew, Sjoukje Y. Philip, Mathias Hauser, Michael Hobbins, Niko Wanders, Ted Veldkamp, Gert von Oldenburgh, Karin van der Wiel, Ted I. E. Veldkamp, Joyce Kimutai, Chris Funk, Friederike Otto
2021, Earth Systems Science Dynamics (12) 17-35
In eastern Africa droughts can cause crop failure and lead to food insecurity. With increasing temperatures, there is an a priori assumption that droughts are becoming more severe. However, the link between droughts and climate change is not sufficiently understood. Here we investigate trends in long-term agricultural drought and...
Acute oral toxicity and tissue residues of saxitoxin in the mallard (Anas platyrhynchos)
Robert J. Dusek, Matthew M. Smith, Caroline R. Van Hemert, Valerie I. Shearn-Bochsler, Sherwood Hall, Clark D. Ridge, Ransome Hardison, Robert Kaler, Barbara L. Bodenstein, Erik K. Hofmeister, Jeffrey S. Hall
2021, Harmful Algae (109)
Since 2014, widespread, annual mortality events involving multiple species of seabirds have occurred in the Gulf of Alaska, Bering Sea, and Chukchi Sea. Among these die-offs, emaciation was a common finding with starvation often identified as the cause of death. However, saxitoxin...
