Vertical zonation and niche breadth of tidal marsh plants along the Northeast Pacific coast
Christopher N. Janousek, Karen M. Thorne, John Y. Takekawa
2019, Estuaries and Coasts (42) 85-98
The distribution patterns of sessile organisms in coastal intertidal habitats typically exhibit vertical zonation, but little is known about variability in zonation among sites or species at larger spatial scales. Data on such heterogeneity could inform mechanistic understanding of factors affecting species distributions as well as efforts to assess and...
Multi-measurement approach for establishing the base of gas hydrate occurrence in the Krishna-Godavari Basin for sites cored during Expedition NGHP-02 in the offshore of India
William F. Waite, Carolyn D. Ruppel, Timothy S. Collett, P. Schultheiss, M. Holland, K.M. Shukla, P. Kumar
2019, Marine and Petroleum Geology (108) 296-320
The 2015 National Gas Hydrate Program of India's second expedition, NGHP-02, acquired logging and coring datasets for constraining the base of the gas hydrate occurrence zone (deepest GH) and the theoretical base of gas hydrate stability zone (BGHS). These data are used here for two primary goals: to constrain the deepest occurrence...
Accounting for location uncertainty in azimuthaltelemetry data improves ecological inference
Mevin Hooten, Brian D. Gerber, Christopher P. Peck, Mindy B. Rice, Anthony D. Apa, James H. Gammonley, Amy J. Davis
2019, Movement Ecology (6)
BackgroundCharacterizing animal space use is critical for understanding ecological relationships. Animal telemetry technology has revolutionized the fields of ecology and conservation biology by providing high quality spatial data on animal movement. Radio-telemetry with very high frequency (VHF) radio signals continues to be a useful technology because of...
Macroinvertebrate sensitivity thresholds for sediment in Virginia streams
Heather Govenor, Leigh Anne H. Krometis, Lawrence Willis, Paul L. Angermeier, W. Cully Hession
2019, Integrated Environmental Assessment and Management (15) 77-92
Sediment is the most commonly identified pollutant associated with macroinvertebrate community impairments in freshwater streams nationwide. Management of this physical stressor is complicated by the multiple measures of sediment available (e.g., suspended, dissolved, bedded) and the variability in natural “healthy” sediment loadings across ecoregions. Here we...
Optimal treatment allocations in space and time for online control of anemerging infectious disease
Eric B. Laber, Nick J. Meyer, Brian J. Reich, Krishna Pacifici, Jaime A. Collazo, John M. Drake
2019, Journal of the Royal Statistical Society. Series C: Applied Statistics (67) 743-789
A key component in controlling the spread of an epidemic is deciding where, when and to whom to apply an intervention. We develop a framework for using data to inform these decisions in realtime. We formalize a treatment allocation strategy as a sequence of functions, one...
Lions and leopards coexist without spatial, temporal or demographic effects of interspecific competition
Angela K. Fuller, Jennifer Miller, Ross Pittman, Gareth Mann, Guy Balme
2019, Journal of Animal Ecology (87) 1709-1726
1. Although interspecific competition plays a principle role in shaping species behaviour and demography, little is known about the population-level outcomes of competition between large carnivores, and the mechanisms that facilitate coexistence. 2. We conducted a multi-landscape analysis of two widely distributed, threatened large carnivore competitors to offer insight into coexistence...
Importance of riparian forest corridors for the ocelot in agricultural landscapes
Roberta Paolino, J. Andrew Royle, Natalia Versiani, Thiago F. Rodrigues, Nielson Pasqualotto, Victor Krepschi, Adriano Chiarello
2019, Journal of Mammalogy (99) 874-884
Worldwide, private lands have attracted increased attention from conservationists, not only because most of the globe is privately owned, but also because private lands can be an asset to the protected area conservation strategy. In Brazil, the riverine Areas of Permanent Protection (APPs) is a key instrument of the Forest...
Modeling framework to estimate spawning and hatching locations of pelagically-spawned eggs
Holly S. Embke, Patrick Kocovsky, Tatiana Garcia, Christine M. Mayer, Song S. Qian
2019, Canadian Journal of Fisheries and Aquatic Sciences (76) 597-607
Identifying spawning and hatching locations is vital to controlling invasive fish and conserving imperiled fish, which can be difficult for pelagically-spawning species with semi-buoyant eggs. In freshwater systems, this reproductive strategy is common among cyprinid species, such as Chinese carp species currently threatening the Great Lakes. Following the confirmation that...
Diets of endangered silver chub (Macrhybopsis storeriana, Kirtland, 1844) in Lake Erie and implications for recovery
Patrick Kocovsky
2019, Ecology of Freshwater Fish (28) 33-40
Silver chub (Macrhybopsis storeriana, Kirtland, 1844) is a native Cyprinid in Lake Erie, one of the Laurentian Great Lakes of North America. It is listed as endangered by the US state of New York and Canada, which has a recovery plan, and as special concern by the state of Michigan....
Let’s agree to disagree: Comparing auto-acoustic identification programs for northeastern bats
W. Mark Ford, Tomás Nocera, Alexander Silvis, Christopher A. Dobony
2019, Journal of Fish and Wildlife Management (10) 346-361
With the declines in abundance and changing distribution of white-nose syndrome–affected bat species, increased reliance on acoustic monitoring is now the new “normal.” As such, the ability to accurately identify individual bat species with acoustic identification programs has become increasingly important. We assessed rates of...
Climatic sensitivity of dryland soil CO2 fluxes differs dramatically with biological soil crust successional state
Colin Tucker, Scott Ferrenberg, Sasha C. Reed
2019, Ecosystems (22) 15-32
Arid and semiarid ecosystems make up approximately 41% of Earth’s terrestrial surface and are suggested to regulate the trend and interannual variability of the global terrestrial carbon (C) sink. Biological soil crusts (biocrusts) are common dryland soil surface communities of bryophytes, lichens, and/or cyanobacteria that bind the soil surface together...
Gas and ash emissions associated with the 2010–present activity of Sinabung Volcano, Indonesia
Sofyan Primulyana, Christoph Kern, Allan Lerner, Ugan Saing, Syegi Kunrat, Hilma Alfianti, Mitha Marlia
2019, Journal of Volcanology and Geothermal Research (382) 184-196
Sinabung Volcano (Sumatra, Indonesia) awoke from over 1200 years of dormancy with multiple phreatic explosions in 2010. After a period of quiescence, Sinabung activity resumed in 2013, producing frequent explosions, lava dome extrusion, and pyroclastic flows from dome collapses, becoming one of the world's most active volcanoes and displacing over...
Slope failure and mass transport processes along the Queen Charlotte Fault Zone, western British Columbia
H. G. Greene, J. Vaughn Barrie, Daniel S. Brothers, James E. Conrad, Kim Conway, Amy E. East, Randolph J. Enkin, Katherine L. Maier, Maureen A. L. Walton, K .M. M. Rohr
2019, Geological Society, London, Special Publications (477) 85-106
Multibeam echosounder (MBES) images, 3.5 kHz seismic-reflection profiles and piston cores obtained along the southern Queen Charlotte Fault Zone are used to map and date mass-wasting events at this transform margin – a seismically active boundary that separates the Pacific Plate from the North American Plate. Whereas the upper continental...
Synchrony — An emergent property of recreational fisheries
Kevin L. Pope
2019, Journal of Applied Ecology (55) 2986-2996
Recreational fisheries are traditionally managed at local scales, but more effective management could be achieved using a cross‐scale approach. To do this, we must first understand how local processes scale up to influence landscape patterns between anglers and resources. We highlight how population‐based synchrony methods, used in conjunction with a...
Ecological and management implications of climate change induced shifts in phenology of coastal fish and wildlife species in the Northeast CASC region
Michelle D. Staudinger, Adrian Jordaan
2019, Conference Paper
Climate change is causing species to shift their phenology, or the timing of recurring life events such as migration and reproduction, in variable and complex ways. This can potentially result in mismatches or asynchronies in food and habitat resources that negatively impact individual fitness, population dynamics, and ecosystem...
On the relationship between conditional (CAR) and simultaneous (SAR) autoregressive models
Jay M. Ver Hoef, Ephraim M. Hanksb, Mevin Hooten
2019, Spatial Statistics (25) 68-85
We clarify relationships between conditional (CAR) and simultaneous (SAR) autoregressive models. We review the literature on this topic and find that it is mostly incomplete. Our main result is that a SAR model can be written as a unique CAR model, and while a CAR model can be written as...
Spatial, road geometric, and biotic factors associated with Barn Owl mortality along an interstate highway
Erin M. Arnold, Steve E. Hanser, Tempe Regan, Jeremy Thompson, Melinda Lowe, Angela Kociolek, James R. Belthoff
2019, Ibis (161) 147-161
Highway programs typically focus on reducing vehicle collisions with large mammals because of economic or safety reasons while overlooking the millions of birds that die annually from traffic. We studied wildlife‐vehicle collisions along an interstate highway in southern Idaho, USA, with among the highest reported rates of American Barn Owl Tyto...
A new indicator framework for quantifying the intensity of the terrestrialwater cycle
Thomas G. Huntington, Peter Weiskel, David M. Wolock, Gregory J. McCabe
2019, Journal of Hydrology (559) 361-372
A quantitative framework for characterizing the intensity of the water cycle over land is presented, and illustrated using a spatially distributed water-balance model of the conterminous United States (CONUS). We approach water cycle intensity (WCI) from a landscape perspective; WCI is defined as the sum of precipitation (P) and actual...
Evaluation of ageing accuracy with complementary non‐lethal methods for slow‐growing, northern populations of shoal bass
James M. Long, C. T. Holley, A. T. Taylor
2019, Fisheries Management and Ecology (25) 150-157
In the upper Chattahoochee River basin, where some populations of shoal bass, Micropterus cataractae Williams & Burgess, are imperilled, age and growth data are lacking. Age and growth of shoal bass in this basin were assessed with non‐lethal means using scales and mark–recapture. Mark–recapture data allowed for estimation of accuracy and determination...
Estimating abundance of an open population with an N-mixture model using auxiliary data on animal movements
Alison C. Ketz, Therese L. Johnson, Ryan J. Monello, John A. Mack, Janet L. George, Mevin Hooten, Benjamin R. Kraft, Margaret A. Wild, N. Thompson Hobbs
2019, Ecological Applications (28) 816-825
Accurate assessment of abundance forms a central challenge in population ecology and wildlife management. Many statistical techniques have been developed to estimate population sizes because populations change over time and space and to correct for the bias resulting from animals that are present in a study area but not observed....
Hydrogeologic controls and geochemical indicators of groundwater movement in the Niles Cone and southern East Bay Plain groundwater subbasins, Alameda County, California
Nicholas F. Teague, John A. Izbicki, Jim Borchers, Justin T. Kulongoski, Bryant C. Jurgens
2019, Scientific Investigations Report 2018-5003
Beginning in the 1970s, Alameda County Water District began infiltrating imported water through ponds in repurposed gravel quarries at the Quarry Lakes Regional Park, in the Niles Cone groundwater subbasin, to recharge groundwater and to minimize intrusion of saline, San Francisco Bay water into freshwater aquifers. Hydraulic connection between distinct...
Understanding the genetic characteristics of Wild Brook Trout populations in North Carolina thanks to the guidance of Dr. Tim King
David C. Kazyak, Barbara A. Lubinski, Jacob M Rash, Tim L. King
2019, Conference Paper, Proceedings of the Wild Trout XII Symposium
We genotyped 7,588 brook trout representing 406 collections from across the State of North Carolina (Figure 1) at 12 microsatellite loci (King et al. 2012). The vast majority ofcollections appeared to represent single populations, based on general conformance to HardyWeinberg equilibrium and limited evidence for linkage-disequilibrium. Allelic diversity was low to moderate...
Fena Valley Reservoir watershed and water-balance model updates and expansion of watershed modeling to southern Guam
Sarah N. Rosa, Lauren E. Hay
2019, Scientific Investigations Report 2017-5093
In 2014, the U.S. Geological Survey, in cooperation with the U.S. Department of Defense’s Strategic Environmental Research and Development Program, initiated a project to evaluate the potential impacts of projected climate-change on Department of Defense installations that rely on Guam’s water resources. A major task of that project was to...
Spatial autoregressive models for statistical inference from ecological data
Jay M. Ver Hoef, Erin E. Peterson, Mevin Hooten, Ephraim M. Hanks, Marie-Josée Fortin
2019, Ecological Monographs (88) 36-59
Ecological data often exhibit spatial pattern, which can be modeled as autocorrelation. Conditional autoregressive (CAR) and simultaneous autoregressive (SAR) models are network‐based models (also known as graphical models) specifically designed to model spatially autocorrelated data based on neighborhood relationships. We identify and discuss six different types...
Exploring the historical earthquakes preceding the giant 1960 Chile earthquake in a time‐dependent seismogenic zone
M. Cisternas, M. Carvajal, Robert L. Wesson, L.L Ely, N Gorigoitia
2019, Bulletin of the Seismological Society of America (107) 2664-2675
New documentary findings and available paleoseismological evidence provide both new insights into the historical seismic sequence that ended with the giant 1960 south-central Chile earthquake and relevant information about the region’s seismogenic zone. According to the few available written records, this region was previously struck by earthquakes of varying size...
