Genetic integrity, population status, and long-term viability of isolated populations of shoal bass in the upper Chattahoochee River basin, Georgia
Andrew T. Taylor, James M. Long
2018, Natural Resource Report NPS/CHAT/NRR-2018/1620
This report characterizes the status of multiple isolated Shoal Bass (Micropterus cataractae) populations in the upper Chattahoochee River basin (UCRB), Georgia. The Shoal Bass, a sport fish endemic to the Apalachicola-Chattahoochee-Flint River (ACF) basin, is a fluvial-specialist species considered vulnerable to local extirpations and extinction due to habitat fragmentation and...
Reduced thermal tolerance during salinity acclimation in brook trout (Salvelinus fontinalis) can be rescued by prior treatment with cortisol
Ciaran A. Shaugnessy, Stephen D. McCormick
2018, Journal of Experimental Biology (221)
The aims of this study were to assess whether thermal tolerance of brook trout (Salvelinus fontinalis) is affected during seawater (SW) acclimation and to investigate the role of cortisol in osmoregulation and thermal tolerance during SW acclimation. Freshwater (FW)-acclimated brook trout at 18°C (Tacc) were exposed to SW for 16 days,...
Assessing the risk of dreissenid mussel invasion in Texas based on lake physical characteristics and potential for downstream dispersal
Matthew A Barnes, Reynaldo Patino
2018, Report
ebra mussels (Dreissena polymorpha) and quagga mussels (Dreissena bugensis) were likely introduced from Ponto-Caspian Eurasia to the Laurentian Great Lakes inadvertently via ballast water release in the 1980s and have since spread across the US, including Texas. Their spread into the state, including reservoirs in both Brazos River and Colorado...
Identifying cost-effective invasive species control to enhance endangered species populations in the Grand Canyon, USA
Lucas S. Bair, Charles B. Yackulic, Michael R. Springborn, Matthew N. Reimer, Craig A. Bond, Lewis G. Coggins
2018, Biological Conservation (220) 12-20
Recovering endangered species populations when confronted with the threat of invasive species is an ongoing natural resource management challenge. While eradication of the invasive species is often the optimal economic solution, it may not be a feasible nor desirable management action in other cases. For example, when invasive species are desired in one area, but disperse...
T.D.A. Cockerell (1866–1948) of the University of Colorado: His contributions to the natural history of the California islands and the establishment of Channel Islands National Monument
Daniel R. Muhs
2018, Western North American Naturalist (78) 247-271
Theodore Dru Alison Cockerell was a naturalist at the University of Colorado from 1904 to 1947 and studied botany, zoology, and paleontology in North and South America, Asia, Australia, Africa, and Europe. In the latter part of his career, he studied the California islands and published many papers on their...
Groundwater flow and heat transport for systems undergoing freeze-thaw: Intercomparison of numerical simulators for 2D test cases
Christophe Grenier, Hauke Anbergen, Victor F. Bense, Quentin Chanzy, Ethan Coon, Nathaniel Collier, François Costard, Michel Ferry, Andrew Frampton, Jennifer M. Frederick, Julio Goncalves, Johann Holmen, Anne Jost, Samuel Kokh, Barret L. Kurylyk, Jeffrey M. McKenzie, John W. Molson, Emmanuel Mouche, Laurent Orgogozo, Romain Pannetier, Agnes Riviere, Nicolas Roux, Wolfram Ruhaak, Johanna Scheidegger, Jan-Olof Selroos, Rene Therrien, Patrik Vidstrand, Clifford I. Voss
2018, Advances in Water Resources (114) 196-218
In high-elevation, boreal and arctic regions, hydrological processes and associated water bodies can be strongly influenced by the distribution of permafrost. Recent field and modeling studies indicate that a fully-coupled multidimensional thermo-hydraulic approach is required to accurately model the evolution of these permafrost-impacted landscapes and groundwater systems. However, the relatively...
Habitat mosaics and path analysis can improve biological conservation of aquatic biodiversity in ecosystems with low-head dams
Sean M. Hitchman, Martha E. Mather, Joseph M. Smith, Jane S. Fencl
2018, Science of the Total Environment (619-620) 221-231
Conserving native biodiversity depends on restoring functional habitats in the face of human-induced disturbances. Low-head dams are a ubiquitous human impact that degrades aquatic ecosystems worldwide. To improve our understanding of how low-head dams impact habitat and associated biodiversity, our research examined complex interactions among three spheres of the total environment. i.e.,...
Tundra landform and vegetation productivity trend maps for the Arctic Coastal Plain of northern Alaska
Mark J. Lara, Ingmar Nitze, Guido Grosse, A. David McGuire
2018, Scientific Data (5) 1-10
Arctic tundra landscapes are composed of a complex mosaic of patterned ground features, varying in soil moisture, vegetation composition, and surface hydrology over small spatial scales (10–100 m). The importance of microtopography and associated geomorphic landforms in influencing ecosystem structure and function is well founded, however, spatial data products describing local...
Factors impacting hunter access to private lands in southeast Minnesota
Eric Walberg, Louis Cornicelli, David C. Fulton
2018, Human Dimensions of Wildlife (23) 101-114
White-tailed deer (Odocoileus virginianus) have important socioeconomic and ecological impacts in the United States. Hunting is considered to be important for the effective management of deer and relies on access to privately owned lands. In 2013, we surveyed nonindustrial private landowners in southeast Minnesota and created two logit models to...
Visual cues for woodpeckers: light reflectance of decayed wood varies by decay fungus
Sean T. O’Daniels, Dylan C. Kesler, Jeanne D. Mihail, Elisabeth B. Webb, Scott J. Werner
2018, Wilson Journal of Ornithology (130) 200-212
The appearance of wood substrates is likely relevant to bird species with life histories that require regular interactions with wood for food and shelter. Woodpeckers detect decayed wood for cavity placement or foraging, and some species may be capable of detecting trees decayed by specific fungi; however, a mechanism allowing...
Assessment of two external transmitter attachment methods for Boiga irregularis (Brown Treesnakes)
Charlotte J. Robinson, Marijoy C. Viernes, Robert Reed, Amy Yackel, Melia G. Nafus
2018, Herpetological Review (49) 32-34
No abstract available....
Incorporating an approach to aid river and reservoir fisheries in an altered landscape
Shannon K. Brewer, Daniel E. Shoup, John Dattillo
2018, Cooperator Science Series 129-2018
Reservoir construction for human-use services alters connected riverine flow patterns and influences fish production. We sampled two pelagic fishes from two rivers and two reservoirs and related seasonal and annual hydrology patterns to the recruitment and growth of each species. River and reservoir populations of Freshwater Drum Aplodinotus grunniens reached...
Evaluating the conservation potential of tributaries for native fishes in the Upper Colorado River Basin
Brian G. Laub, Gary P. Thiede, William W. Macfarlane, Phaedra Budy
2018, Fisheries Magazine (43) 194-206
We explored the conservation potential of tributaries in the upper Colorado River basin by modeling native fish species richness as a function of river discharge, temperature, barrier‐free length, and distance to nearest free‐flowing main‐stem section. We investigated a historic period prior to large‐scale water development and a contemporary period. In...
River flow and riparian vegetation dynamics - implications for management of the Yampa River through Dinosaur National Monument
Michael L. Scott, Jonathan M. Friedman
2018, Natural Resource Report NPS/NRSS/WRD/NRR—2018/1619
This report addresses the relation between flow of the Yampa River and occurrence of herbaceous and woody riparian vegetation in Dinosaur National Monument (DINO) with the goal of informing management decisions related to potential future water development. The Yampa River in DINO flows through diverse valley settings, from the relatively...
Tropical cyclone activities: Asia Pacific Region
Lindsey M. Harriman
2018, Book chapter, Exploring natural hazards: A case study approach
No abstract available....
Developing a shared understanding of the Upper Mississippi River: the foundation of an ecological resilience assessment
Kristen L. Bouska, Jeffrey N. Houser, Nathan R. De Jager, Jon S. Hendrickson
2018, Ecology and Society (23) 1-6
The Upper Mississippi River System (UMRS) is a large and complex floodplain river ecosystem that spans the jurisdictions of multiple state and federal agencies. In support of ongoing ecosystem restoration and management by this broad partnership, we are undertaking a resilience assessment of the UMRS. We describe the UMRS in...
Increased scientific rigor will improve reliability of research and effectiveness of management
Sarah N. Sells, Sarah B. Bassing, Kristin J. Barker, Shannon C. Forshee, Allison Keever, James W. Goerz, Michael S. Mitchell
2018, Journal of Wildlife Management (82) 485-494
Rigorous science that produces reliable knowledge is critical to wildlife management because it increases accurate understanding of the natural world and informs management decisions effectively. Application of a rigorous scientific method based on hypothesis testing minimizes unreliable knowledge produced by research. To evaluate the prevalence of scientific rigor in wildlife...
From top to bottom: Do Lake Trout diversify along a depth gradient in Great Bear Lake, NT, Canada?
Louise Chavarie, Kimberly L. Howland, Les N. Harris, Michael J. Hansen, William J. Harford, Colin P. Gallagher, Shauna M. Baillie, Brendan Malley, William M. Tonn, Andrew M. Muir, Charles C. Krueger
2018, PLoS ONE (13) 1-28
Depth is usually considered the main driver of Lake Trout intraspecific diversity across lakes in North America. Given that Great Bear Lake is one of the largest and deepest freshwater systems in North America, we predicted that Lake Trout intraspecific diversity to be organized along a depth axis within this...
The bees (Hymenoptera: Apoidea) of Louisiana: an updated, annotated checklist
Brittany E. Owens, Larry K. Allain, Eric C. VanGorder, Janice L. Bossart, Christopher E. Carlton
2018, Proceedings of the Entomological Society of Washington (120) 272-307
An annotated checklist is provided for 243 species and subspecies of bees collected from or thought to occur in the state of Louisiana, where 163 are confirmed records, 46 are probable records, and 34 are possible records. We also list twelve records considered to be “dubious” because of the absence...
New petrological, geochemical, and geochronological perspectives on andesite-dacite magma genesis at Ruapehu volcano, New Zealand
Chris E Conway, John A Gamble, Colin J.N. Wilson, Graham S. Leonard, Dougal B. Townsend, Andrew T. Calvert
2018, American Mineralogist (103) 565-581
Time–composition relationships in eruptive sequences at composite volcanoes can show how the ongoing intrusion of magmas progressively affects the lithosphere at continental convergent margins. Here, new whole-rock and microanalytical major and trace element data from andesite-dacite lava flows are integrated with previous...
2018 one‐year seismic hazard forecast for the central and eastern United States from induced and natural earthquakes
Mark D. Petersen, Charles Mueller, Morgan P. Moschetti, Susan M. Hoover, Kenneth S. Rukstales, Daniel E. McNamara, Robert A. Williams, Allison Shumway, Peter M. Powers, Paul S. Earle, Andrea L. Llenos, Andrew J. Michael, Justin L. Rubinstein, Jack Norbeck, Elizabeth S. Cochran
2018, Seismological Research Letters (89) 1049-1061
This article describes the U.S. Geological Survey (USGS) 2018 one‐year probabilistic seismic hazard forecast for the central and eastern United States from induced and natural earthquakes. For consistency, the updated 2018 forecast is developed using the same probabilistic seismicity‐based methodology as applied in the two previous forecasts. Rates of earthquakes...
Springs as hydrologic refugia in a changing climate? A remote sensing approach
Jennifer M. Cartwright, Henry M. Johnson
2018, Ecosphere (9) 1-22
Spring‐fed wetlands are ecologically important habitats in arid and semi‐arid regions. Springs have been suggested as possible hydrologic refugia from droughts and climate change; however, springs that depend on recent precipitation or snowmelt for recharge may be vulnerable to warming and drought intensification. Springs that are expected to maintain their...
Genome-wide SNP data and morphology support the distinction of two new species of Kovarikia Soleglad, Fet & Graham, 2014 endemic to California (Scorpiones, Vaejovidae)
Robert W. Bryson Jr., Dustin A. Wood, Matthew R. Graham, Michael E. Soleglad, John E. McCormack
2018, ZooKeys (739) 79-106
Morphologically conserved taxa such as scorpions represent a challenge to delimit. We recently discovered populations of scorpions in the genus Kovarikia Soleglad, Fet & Graham, 2014 on two isolated mountain ranges in southern California. We generated genome-wide single nucleotide polymorphism data and used Bayes factors species delimitation to compare...
Plasticity in physiological condition of female brown bears across diverse ecosystems
Grant V. Hilderbrand, David Gustine, Buck A. Mangipane, Kyle Joly, William Leacock, Lindsey Mangipane, Joy Erlenbach, Mathew Sorum, Matthew Cameron, Jerrold L. Belant, Troy Cambier
2018, Polar Biology (41) 773-780
Variation in life history strategies facilitates the near global distribution of mammals by expanding realized niche width. We investigated physiological plasticity in the spring body composition of adult female brown bears (Ursus arctos) across 4 diverse Alaskan ecosystems. Brown bears are a highly intelligent omnivore with a historic...
Middle Pleistocene infill of Hinkley Valley by Mojave River sediment and associated lake sediment: Depositional architecture and deformation by strike-slip faults
David M. Miller, Elizabeth Haddon, Victoria E. Langenheim, Andrew J. Cyr, Elmira Wan, Laura Walkup, Scott W. Starratt
2018, Conference Paper, Against the current: Mojave River from sink to source; 2018 Desert Symposium Field Guide and Proceedings
Hinkley Valley in the Mojave Desert, near Barstow about 140 km northeast of Los Angeles and midway between Victorville Valley and the Lake Manix basin, contains a thick sedimentary sequence delivered by the Mojave River. Our study of sediment cores drilled in the valley indicates that Hinkley Valley was probably...
