Application and evaluation of electromagnetic methods for imaging saltwater intrusion in coastal aquifers: Seaside Groundwater Basin, California
Vanessa Nenna, Daan Herckenrather, Rosemary Knight, Nick Odlum, Darcy McPhee
2013, Geophysics (78) B77-B88
Developing effective resource management strategies to limit or prevent saltwater intrusion as a result of increasing demands on coastal groundwater resources requires reliable information about the geologic structure and hydrologic state of an aquifer system. A common strategy for acquiring such information is to drill sentinel wells near the coast...
Size distribution of Parkfield’s microearthquakes reflects changes in surface creep rate
Theresa Tormann, Stefan Wiemer, Sabrina Metzger, Andrew J. Michael, Jeanne L. Hardebeck
2013, Geophysical Journal International (193) 1474-1478
The nucleation area of the series of M6 events in Parkfield has been shown to be characterized by low b-values throughout the seismic cycle. Since low b-values represent high differential stresses, the asperity structure seems to be always stably stressed and even unaffected by the latest main shock in 2004....
Effect of long-term understory prescribed burning on standing and down dead woody material in dry upland oak forests
John A. Polo, S.W. Hallgren, David M. Leslie Jr.
2013, Forest Ecology and Management (291) 128-135
Dead woody material, long ignored or viewed as a nuisance for forest management, has gained appreciation for its many roles in the forest including wildlife habitat, nutrient storage and cycling, energy for trophic webs, protection of soil, fuel for fire and carbon storage. The growing interest in managing dead woody...
Evaluation of ISCCP multisatellite radiance calibration for geostationary imager visible channels using the moon
Thomas C. Stone, William B. Rossow, Joseph Ferrier, Laura M. Hinkelman
2013, IEEE Transactions on Geoscience and Remote Sensing (51) 1255-1266
Since 1983, the International Satellite Cloud Climatology Project (ISCCP) has collected Earth radiance data from the succession of geostationary and polar-orbiting meteorological satellites operated by weather agencies worldwide. Meeting the ISCCP goals of global coverage and decade-length time scales requires consistent and stable calibration of the participating satellites. For the...
Observed changes in phenology across the USA: A regional review for the 2013 National Climate Assessment, Great Plains Regional Information Sheet.
Stacey A. Leicht-Young, Carolyn A.F. Enquist, Jake F. Weltzin
2013, Report
This is one in a series of eight, geographic region-focused information sheets that summarizes documented changes in plant and animal phenology over the past century across the United States. This summary is based on long-term studies (10 years or more) published in the primary scientific literature since 2001. A forthcoming...
Groundwater influences on the distribution and abundance of riverine smallmouth bass, Micropterus dolomieu, in pasture landscapes of the midwestern USA
Shannon K. Brewer
2013, River Research and Applications (29) 269-278
This study examined how spring-flow (SF) contributions to streams related to the distribution and abundance of smallmouth bass Micropterus dolomieu in a predominately pasture landscape in Missouri, USA. Stream segments (N=13) with similar landscape characters were classified by SF volume into high SF (HSF) or low SF (LSF) groups. The...
Raman spectroscopy of efflorescent sulfate salts from Iron Mountain Mine Superfund Site, California
Pablo Sobron, Charles N. Alpers
2013, Astrobiology (13) 270-278
The Iron Mountain Mine Superfund Site near Redding, California, is a massive sulfide ore deposit that was mined for iron, silver, gold, copper, zinc, and pyrite intermittently for nearly 100 years. As a result, both water and air reached the sulfide deposits deep within the mountain, producing acid mine drainage...
Drought, deluge and declines: the impact of precipitation extremes on amphibians in a changing climate
Susan C. Walls, William J. Barichivich, Mary E. Brown
2013, Biology (2) 399-418
The Class Amphibia is one of the most severely impacted taxa in an on-going global biodiversity crisis. Because amphibian reproduction is tightly associated with the presence of water, climatic changes that affect water availability pose a particularly menacing threat to both aquatic and terrestrial-breeding amphibians. We explore the impacts that...
Observed changes in phenology across the USA: A regional review for the 2013 National Climate Assessment, Pacific Northwest Regional Information Sheet
Stacey A. Leicht-Young, Carolyn A.F. Enquist, Jake F. Weltzin
2013, Report
This is one in a series of eight, geographic region-focused information sheets that summarizes documented changes in plant and animal phenology over the past century across the United States. This summary is based on long-term studies (10 years or more) published in the primary scientific literature since 2001. A forthcoming...
Observed changes in phenology across the USA: A regional review for the 2013 National Climate Assessment, Midwest Regional Information Sheet
Stacey A. Leicht-Young, Carolyn A.F. Enquist, Jake F. Weltzin
2013, Report
This is one in a series of eight, geographic region-focused information sheets that summarizes documented changes in plant and animal phenology over the past century across the United States. This summary is based on long-term studies (10 years or more) published in the primary scientific literature since 2001. A forthcoming...
Response of anaerobic carbon cycling to water table manipulation in an Alaskan rich fen
E.S. Kane, M.R. Chivers, M.R. Turetsky, Claire C. Treat, D.G. Petersen, M. Waldrop, J.W. Harden, A. D. McGuire
2013, Soil Biology and Biochemistry (58) 50-60
To test the effects of altered hydrology on organic soil decomposition, we investigated CO2 and CH4 production potential of rich-fen peat (mean surface pH = 6.3) collected from a field water table manipulation experiment including control, raised and lowered water table treatments. Mean anaerobic CO2 production potential at 10 cm...
Observed changes in phenology across the USA: A regional review for the 2013 National Climate Assessment, Northeast Regional Information Sheet
Stacey A. Leicht-Young, Carolyn A.F. Enquist, Jake F. Weltzin
2013, Report
This is one in a series of eight, geographic region-focused information sheets that summarizes documented changes in plant and animal phenology over the past century across the United States. This summary is based on long-term studies (10 years or more) published in the primary scientific literature since 2001. A forthcoming...
Observed changes in phenology across the USA: A regional review for the 2013 National Climate Assessment, Hawaii and Pacific Islands Regional Information Sheet
Stacey A. Leicht-Young, Carolyn A.F. Enquist, Jake F. Weltzin
2013, Report
This is one in a series of eight, geographic region-focused information sheets that summarizes documented changes in plant and animal phenology over the past century across the United States. This summary is based on long-term studies (10 years or more) published in the primary scientific literature since 2001. A forthcoming...
Modeling sediment accumulation in North American playa wetlands in response to climate change, 1940-2100
Lucy Burris, Susan K. Skagen
2013, Climatic Change (117) 69-83
Playa wetlands on the west-central Great Plains of North America are vulnerable to sediment infilling from upland agriculture, putting at risk several important ecosystem services as well as essential habitats and food resources of diverse wetland-dependent biota. Climate predictions for this semi-arid area indicate reduced precipitation which may alter rates...
Observed changes in phenology across the USA: A regional review for the 2013 National Climate Assessment, Southwest Regional Information Sheet
Stacey A. Leicht-Young, Carolyn A.F. Enquist, Jake F. Weltzin
2013, Report
This is one in a series of eight, geographic region-focused information sheets that summarizes documented changes in plant and animal phenology over the past century across the United States. This summary is based on long-term studies (10 years or more) published in the primary scientific literature since 2001. A forthcoming...
Burial and exhumation of temperate bedrock reefs as elucidated by repetitive high-resolution sea floor sonar surveys: Spatial patterns and impacts to species' richness and diversity
Curt D. Storlazzi, Theresa A. Fregoso, Jared D. Figurski, Jan Freiwald, Steve I. Lonhart, David P. Finlayson
2013, Continental Shelf Research (55) 40-51
To understand how chronic sediment burial and scour contribute to variation in the structure of algal and invertebrate communities on temperate bedrock reefs, the dynamics of the substrate and communities were monitored at locations that experience sand inundation and adjacent areas that do not. Co-located benthic scuba-transect surveys and high-resolution...
Observed changes in phenology across the USA: A regional review for the 2013 National Climate Assessment, Alaska and the Arctic Regional Information Sheet
Stacey A. Leicht-Young, Carolyn A.F. Enquist, Jake F. Weltzin
2013, Report
This is one in a series of eight, geographic region-focused information sheets that summarizes documented changes in plant and animal phenology over the past century across the United States. This summary is based on long-term studies (10 years or more) published in the primary scientific literature since 2001. A forthcoming...
Vegetation classification and mapping, Vicksburg National Military Park, Mississippi
Chris Lea, Robert G. Waltermire, Carl Nordman
2013, National Park Service Natural Resource Technical Report NPS/GULN/NRTR—2013/710
Executive Summary The National Park Service (NPS) Gulf Coast Inventory and Monitoring Network, with the support of the National Park Service Vegetation Inventory completed vegetation classification and mapping for Vicksburg National Military Park (VICK), in Warren County, Mississippi, from 2004 to 2010. VICK is one of more than 250 NPS units...
Observed changes in phenology across the USA: A regional review for the 2013 National Climate Assessment, Southeast Regional Information Sheet
Stacey A. Leicht-Young, Carolyn A.F. Enquist, Jake F. Weltzin
2013, Report
This is one in a series of eight, geographic region-focused information sheets that summarizes documented changes in plant and animal phenology over the past century across the United States. This summary is based on long-term studies (10 years or more) published in the primary scientific literature since 2001. A forthcoming...
Urchins (Stronglyocentrotus spp.): Section 4.6
Nancy E. Elder
Ian M. Miller, Caitlin Shishido, Liam Antrim, C. Edward Bowlby, editor(s)
2013, Report, Climate change and the Olympic Coast National Marine Sanctuary: Interpreting potential futures. Marine Sanctuaries Conservation Series (ONMS-13-01)
Summary Increased ocean temperature in combination with changes in ocean currents may cause urchin populations to expand or be replaced by another species. Increases in ocean acidity, hypercapnia, and decreasing carbonate mineral saturation are intricately linked and have been shown to have negative impacts on all urchin life stages (pelagic larvae, juveniles...
Recent seasonal variations in arid landscape cover and aeolian sand mobility, Navajo Nation, southwestern U.S.
Amy E. Draut, Margaret Hiza Redsteer, Lee Amoroso
Liviu Giosan, Dorian Q. Fuller, Kathleen Nicoll, Rowan K. Flad, Peter D. Clift, editor(s)
2013, Book chapter, Climates, Landscapes, and Civilizations
<span data-sheets-value="{"1":2,"2":"Abstract: The socioeconomic impacts of climate change pose problems not only in devel- oping countries but also to residents of arid lands in the United States among marginalized societies with limited economic means. In the Navajo Nation, warming temperatures and recent drought have increased aeolian sediment mobility such that...
Near real-time monitoring of volcanic surface deformation from GPS measurements at Long Valley Caldera, California
Kang Hyeun Ji, Thomas A. Herring, Andrea L. Llenos
2013, Geophysical Research Letters (40) 1054-1058
Long Valley Caldera in eastern California is an active volcanic area and has shown continued unrest in the last three decades. We have monitored surface deformation from Global Positioning System (GPS) data by using a projection method that we call Targeted Projection Operator (TPO). TPO projects residual time series with...
Regional constraints to biological nitrogen fixation in post-fire forest communities
Stephanie Yelenik, Steven S. Perakis, David Hibbs
2013, Ecology (94) 739-750
Biological nitrogen fixation (BNF) is a key ecological process that can restore nitrogen (N) lost in wildfire and shape the pace and pattern of post-fire forest recovery. To date, there is limited information on how climate and soil fertility interact to influence different pathways of BNF in early forest succession....
Mineral resource of the month: beryllium
Water Resources Division, U.S. Geological Survey
2013, Earth (58) 57-57
The article discusses information about Beryllium. It notes that Beryllium is a light metal that has a gray color. The metal is used in the production of parts and devices including bearings, computer-chip heat sinks, and output windows of X-ray tubes. The article mentions Beryllium's discovery in 1798 by French...
A spatial mark–resight model augmented with telemetry data
Rachel Sollmann, Beth Gardner, Arielle W. Parsons, Jessica J. Stocking, Brett T. McClintock, Theodore R. Simons, Kenneth H. Pollock, Allan F. O’Connell
2013, Ecology (94) 553-559
Abundance and population density are fundamental pieces of information for population ecology and species conservation, but they are difficult to estimate for rare and elusive species. Mark-resight models are popular for estimating population abundance because they are less invasive and expensive than traditional mark-recapture. However, density estimation using mark-resight is...
