Serum chemistry, hematologic, and post-mortem findings in free-ranging bobcats (Lynx rufus) with notoedric mange
Laurel E.K. Serieys, Janet Foley, Sean Owens, Leslie Woods, Erin E. Boydston, Lisa M. Lyren, Robert H. Poppenga, Deana L. Clifford, Nicole Stephenson, Jaime Rudd, Seth P.D. Riley
2013, Journal of Parasitology (99) 989-996
Notoedric mange was responsible for a population decline of bobcats (Lynx rufus) in 2 Southern California counties from 2002–2006 and is now reported to affect bobcats in Northern and Southern California. With this study we document clinical laboratory and necropsy findings for bobcats with mange. Bobcats in this study included...
Potential effects of sea-level rise on coastal wetlands in southeastern Louisiana
Patty Glick, Jonathan Clough, Amy Polaczyk, Brady R. Couvillion, Brad Nunley
2013, Journal of Coastal Research 211-233
Coastal Louisiana wetlands contain about 37% of the estuarine herbaceous marshes in the conterminous United States. The long-term stability of coastal wetlands is often a function of a wetland's ability to maintain elevation equilibrium with mean sea level through processes such as primary production and sediment accretion. However, Louisiana has...
The water-quality effects of a bulkhead installed in the Dinero mine tunnel, near Leadville, Colorado
Katherine Walton-Day, Taylor J. Mills, Adolph Amundson, Kato T. Dee, Melissa R. Relego, Caitlin Borbely
A. Brown, L. Figueroa, C. Wolkersdorfer, editor(s)
2013, Conference Paper, Annual International Mine Water Association conference — Reliable mine water technology
No abstract available....
Pacific Island landbird monitoring annual report, Haleakalā National Park, 2012
Seth W. Judge, Richard J. Camp, Patrick J. Hart
2013, National Park Service Natural Resource Technical Report NPS/PACN/NRTR—2013/740
Haleakalā National Park (HALE) was surveyed for landbirds and habitat characteristics from March 20 through July 26, 2012. This information provides data in the time-series of landbird monitoring for long-term trends in forest bird distribution, density, and abundance. The Kīpahulu District of eastern Haleakalā Volcano was surveyed using point-transect distance...
Confronting dynamics and uncertainty in optimal decision making for conservation
Byron K. Williams, Fred A. Johnson
2013, Environmental Research Letters (8) 1-16
The effectiveness of conservation efforts ultimately depends on the recognition that decision making, and the systems that it is designed to affect, are inherently dynamic and characterized by multiple sources of uncertainty. To cope with these challenges, conservation planners are increasingly turning to the tools of decision analysis, especially dynamic...
Carbon stocks of trees killed by bark beetles and wildfire in the western United States
Jeffrey A. Hicke, Arjan J.H. Meddens, Craig D. Allen, Crystal A. Kolden
2013, Environmental Research Letters (8)
Forests are major components of the carbon cycle, and disturbances are important influences of forest carbon. Our objective was to contribute to the understanding of forest carbon cycling by quantifying the amount of carbon in trees killed by two disturbance types, fires and bark beetles, in the western United States...
Geologic framework and petroleum systems of Cook Inlet basin, south-central Alaska
D. L. LePain, Richard G. Stanley, K. P. Helmold, D.P. Shellenbaum
D.M. Stone, D.M. Hite, editor(s)
2013, Book chapter, Oil and cas fields of the Cook Inlet Basin, Alaska: AAPG memoir 104
This report provides a comprehensive overview of the stratigraphy, structure, tectonics, and petroleum systems of the Cook Inlet basin, an important oil- and gas-producing region in south-central Alaska....
SPARROW models used to understand nutrient sources in the Mississippi/Atchafalaya River Basin
Dale M. Robertson, David A. Saad
2013, Journal of Environmental Quality (42) 1422-1440
Nitrogen (N) and phosphorus (P) loading from the Mississippi/Atchafalaya River Basin (MARB) has been linked to hypoxia in the Gulf of Mexico. To describe where and from what sources those loads originate, SPAtially Referenced Regression On Watershed attributes (SPARROW) models were constructed for the MARB using geospatial datasets for 2002,...
Carbon routing in the polar bear: insights from the lipid and protein pathways
C.A. Striker, Karyn D. Rode, J. Erlenbach, C.T. Robbins
2013, Conference Paper
No abstract available....
The influence of precipitation, vegetation and soil properties on the ecohydrology of sagebrush steppe rangelands on the INL site
Matthew J. Germino
2013, Report
The INL Site and other landscapes having sagebrush steppe vegetation are experiencing a simultaneous change in climate and floristics that result from increases in exotic species. Determining the separate and combined/interactive effects of climate and vegetation change is important for assessing future changes on the landscape and for hydrologic processes. This...
A natural resource condition assessment for Sequoia and Kings Canyon National Parks: Appendix 22: climatic change
Adrian J. Das, Nathan L. Stephenson
2013, Natural Resource Report NPS/SEKI/NRR--2013/665.22
Climate is a master controller of the structure, composition, and function of biotic communities, affecting them both directly, through physiological effects, and indirectly, by mediating biotic interactions and by influencing disturbance regimes. Sequoia and Kings Canyon National Park’s (SEKI’s) dramatic elevational changes in biotic communities -- from warm mediterranean to...
Variable intertidal temperature explains why disease endangers black abalone
Tal Ben-Horin, Hunter S. Lenihan, Kevin D. Lafferty
2013, Ecology (94) 161-168
Epidemiological theory suggests that pathogens will not cause host extinctions because agents of disease should fade out when the host population is driven below a threshold density. Nevertheless, infectious diseases have threatened species with extinction on local scales by maintaining high incidence and the ability to spread efficiently even as...
Monitoring vegetation response to episodic disturbance events by using multitemporal vegetation indices
Gregory D. Steyer, Brady R. Couvillion, John A. Barras
2013, Journal of Coastal Research 118-130
Normalized Difference Vegetation Index (NDVI) derived from MODerate-resolution Imaging Spectroradiometer (MODIS) satellite imagery and land/water assessments from Landsat Thematic Mapper (TM) imagery were used to quantify the extent and severity of damage and subsequent recovery after Hurricanes Katrina and Rita of 2005 within the vegetation communities of Louisiana's coastal wetlands....
Reply to discussion: "Nutrient inputs to the Laurentian Great Lakes by source and watershed estimated using SPARROW watershed models" by R. Peter Richards, Ibrahim Alameddine, J. David Allan, David B. Baker, Nathan S. Bosch, Remegio Confesor, Joseph V. DePinto, David M. Dolan, Jeffrey M. Reutter, and Donald Scavia
Dale M. Robertson, David A. Saad
2013, Journal of the American Water Resources Association (49) 725-734
No abstract available....
Strong species-environment feedback shapes plant community assembly along environmental gradients
Jiang Jiang, Donald L. DeAngelis
2013, Ecology and Evolution (3) 4119-4128
An aim of community ecology is to understand the patterns of competing species assembly along environmental gradients. All species interact with their environments. However, theories of community assembly have seldom taken into account the effects of species that are able to engineer the environment. In this modeling study, we integrate...
Economic vulnerability to sea-level rise along the northern U.S. Gulf Coast
Cindy A. Thatcher, John Brock, Elizabeth A. Pendleton
2013, Journal of Coastal Research (Spring 2013) 234-243
The northern Gulf of Mexico coast of the United States has been identified as highly vulnerable to sea-level rise, based on a combination of physical and societal factors. Vulnerability of human populations and infrastructure to projected increases in sea level is a critical area of uncertainty for communities in the...
Empirical estimates to reduce modeling uncertainties of soil organic carbon in permafrost regions: a review of recent progress and remaining challenges
U. Mishra, J.D. Jastrow, R. Matamala, G. Hugelius, C.D. Koven, Jennifer W. Harden, S.L. Ping, G.J. Michaelson, Z. Fan, R.M. Miller, A. D. McGuire, C. Tarnocai, P. Kuhry, W.J. Riley, K. Schaefer, E.A.G. Schuur, M.T. Jorgenson, L. D. Hinzman
2013, Environmental Research Letters (8)
The vast amount of organic carbon (OC) stored in soils of the northern circumpolar permafrost region is a potentially vulnerable component of the global carbon cycle. However, estimates of the quantity, decomposability, and combustibility of OC contained in permafrost-region soils remain highly uncertain, thereby limiting our ability to predict the...
A natural resource condition assessment for Sequoia and Kings Canyon National Parks: Appendix 11a: giant sequoias
Robert A. York, Nathan L. Stephenson, Marc Meyer, Steve Hanna, Moody Tadashi, Anthony C. Caprio, John J. Battles
2013, Natural Resource Report NPS/SEKI/NR--2013/665.11a
For natural resource managers in the southern Sierra Nevada, giant sequoia requires very little introduction. It receives great attention as an icon of western forests and as a common namesake with the areas where it occurs. While it is a single component of a very complex system, its attention in...
The environmental-data automated track annotation (Env-DATA) system: linking animal tracks with environmental data
Somayeh Dodge, Gil Bohrer, Rolf P. Weinzierl, Sarah C. Davidson, Roland Kays, David C. Douglas, Sebastian Cruz, J. Han, David Brandes, Martin Wikelski
2013, Movement Ecology (1) 1-14
The movement of animals is strongly influenced by external factors in their surrounding environment such as weather, habitat types, and human land use. With advances in positioning and sensor technologies, it is now possible to capture animal locations at high spatial and temporal granularities. Likewise, scientists have an increasing access...
Influence of estuarine processes on spatiotemporal variation in bioavailable selenium
A. Robin Stewart, Samuel N. Luoma, Kent A. Elrick, James L. Carter, Mick van der Wegen
2013, Marine Ecology Progress Series (492) 41-56
Dynamic processes (physical, chemical and biological) challenge our ability to quantify and manage the ecological risk of chemical contaminants in estuarine environments. Selenium (Se) bioavailability (defined by bioaccumulation), stable isotopes and molar carbon-tonitrogen ratios in the benthic clam Potamocorbula amurensis, an important food source for predators, were determined monthly for...
Marsh collapse thresholds for coastal Louisiana estimated using elevation and vegetation index data
Brady R. Couvillion, Holly Beck
2013, Journal of Coastal Research 58-67
Forecasting marsh collapse in coastal Louisiana as a result of changes in sea-level rise, subsidence, and accretion deficits necessitates an understanding of thresholds beyond which inundation stress impedes marsh survival. The variability in thresholds at which different marsh types cease to occur (i.e., marsh collapse) is not well understood. We...
Reorganization of vegetation, hydrology and soil carbon after permafrost degradation across heterogeneous boreal landscapes
M. Torre Jorgenson, Jennifer Harden, Mikhail Kanevskiy, Jonathan O'Donnell, Kim Wickland, Stephanie Ewing, Kristen Manies, Qianlai Zhuang, Yuri Shur, Robert G. Striegl, Joshua C. Koch
2013, Environmental Research Letters (8)
The diversity of ecosystems across boreal landscapes, successional changes after disturbance and complicated permafrost histories, present enormous challenges for assessing how vegetation, water and soil carbon may respond to climate change in boreal regions. To address this complexity, we used a chronosequence approach to assess changes in vegetation composition, water...
Survival of Apache Trout eggs and alevins under static and fluctuating temperature regimes
Matthew S. Recsetar, Scott A. Bonar
2013, Transactions of the American Fisheries Society (142) 373-379
Increased stream temperatures due to global climate change, livestock grazing, removal of riparian cover, reduction of stream flow, and urbanization will have important implications for fishes worldwide. Information exists that describes the effects of elevated water temperatures on fish eggs, but less information is available on the effects of fluctuating...
Flying with the wind: Scale dependency of speed and direction measurements in modelling wind support in avian flight
Kamran Safi, Bart Kranstauber, Rolf P. Weinzierl, Larry Griffin, Eileen C. Reese, David Cabot, Sebastian Cruz, Carolina Proaño, John Y. Takekawa, Scott H. Newman, Jonas Waldenstrom, Daniel Bengtsson, Roland Kays, Martin Wikelski, Gil Bohrer
2013, Movement Ecology (1)
Background: Understanding how environmental conditions, especially wind, influence birds' flight speeds is a prerequisite for understanding many important aspects of bird flight, including optimal migration strategies, navigation, and compensation for wind drift. Recent developments in tracking technology and the increased availability of data on large-scale weather patterns have made it...
Permafrost and organic layer interactions over a climate gradient in a discontinuous permafrost zone
Kristofer D. Johnson, Jennifer W. Harden, A. David McGuire, Mark Clark, Fengming Yuan, Andrew O. Finley
2013, Environmental Research Letters (8)
Permafrost is tightly coupled to the organic soil layer, an interaction that mediates permafrost degradation in response to regional warming. We analyzed changes in permafrost occurrence and organic layer thickness (OLT) using more than 3000 soil pedons across a mean annual temperature (MAT) gradient. Cause and effect relationships between permafrost...
