Environmental forcing on life history strategies: Evidence for multi-trophic level responses at ocean basin scales
Robert M. Suryan, Vincent S. Saba, Bryan P. Wallace, Scott A. Hatch, Morten Frederiksen, Sarah Wanless
2009, Progress in Oceanography (81) 214-222
Variation in life history traits of organisms is thought to reflect adaptations to environmental forcing occurring from bottom-up and top-down processes. Such variation occurs not only among, but also within species, indicating demographic plasticity in response to environmental conditions. From a broad literature review, we present evidence for ocean basin-...
Deposition and flux of sediment from the Po River, Italy: An idealized and wintertime numerical modeling study
A.J. Bever, C. K. Harris, C. R. Sherwood, R. P. Signell
2009, Marine Geology (260) 69-80
Recent studies of sediment dynamics and clinoform development in the northern Adriatic Sea focused on winter 2002-2003 and provided the data and motivation for development of a detailed sediment-transport model for the area near the Po River delta. We used both idealized test cases and more realistic simulations to improve...
Large, high-intensity fire events in Southern California shrublands: Debunking the fine-grain age patch model
Jon E. Keeley, P.H. Zedler
2009, Ecological Applications (19) 69-94
We evaluate the fine-grain age patch model of fire regimes in southern California shrublands. Proponents contend that the historical condition was characterized by frequent small to moderate size, slow-moving smoldering fires, and that this regime has been disrupted by fire suppression activities that have caused unnatural fuel accumulation and anomalously...
The 1170 and 1202 CE Dead Sea Rift earthquakes and long-term magnitude distribution of the Dead Sea Fault zone
S. E. Hough, R. Avni
2009, Israel Journal of Earth Sciences (58) 295-308
In combination with the historical record, paleoseismic investigations have provided a record of large earthquakes in the Dead Sea Rift that extends back over 1500 years. Analysis of macroseismic effects can help refine magnitude estimates for large historical events. In this study we consider the detailed intensity distributions for two...
LANDFIRE: A nationally consistent vegetation, wildland fire, and fuel assessment
Matthew G. Rollins
2009, International Journal of Wildland Fire (18) 235-249
LANDFIRE is a 5-year, multipartner project producing consistent and comprehensive maps and data describing vegetation, wildland fuel, fire regimes and ecological departure from historical conditions across the United States. It is a shared project between the wildland fire management and research and development programs of the US Department of Agriculture...
Learning to be different: Acquired skills, social learning, frequency dependence, and environmental variation can cause behaviourally mediated foraging specializations
M. T. Tinker, M. Mangel, J. A. Estes
2009, Evolutionary Ecology Research (11) 841-869
Question: How does the ability to improve foraging skills by learning, and to transfer that learned knowledge, affect the development of intra-population foraging specializations? Features of the model: We use both a state-dependent life-history model implemented by stochastic dynamic programming (SDPM) and an individual-based model (IBM) to capture the dynamic...
Survival of radio-implanted drymarchon couperi (Eastern Indigo Snake) in relation to body size and sex
N.L. Hyslop, J.M. Meyers, R.J. Cooper, Terry M. Norton
2009, Herpetologica (65) 199-206
Drymarchon couperi (eastern indigo snake) has experienced population declines across its range primarily as a result of extensive habitat loss, fragmentation, and degradation. Conservation efforts for D. couperi have been hindered, in part, because of informational gaps regarding the species, including a lack of data on population ecology and estimates...
Evaluation of a moderate resolution, satellite-based impervious surface map using an independent, high-resolution validation data set
J. W. Jones, T. Jarnagin
2009, Journal of Hydrologic Engineering (14) 369-376
Given the relatively high cost of mapping impervious surfaces at regional scales, substantial effort is being expended in the development of moderate-resolution, satellite-based methods for estimating impervious surface area (ISA). To rigorously assess the accuracy of these data products high quality, independently derived validation data are needed. High-resolution data were...
Fractionation of the platinum-group elments and Re during crystallization of basalt in Kilauea Iki Lava Lake, Hawaii
L. Pitcher, Rosalind Tuthill Helz, R.J. Walker, P. Piccoli
2009, Chemical Geology (260) 196-210
Kilauea Iki lava lake formed during the 1959 summit eruption of Kilauea Volcano, then crystallized and differentiated over a period of 35??years. It offers an opportunity to evaluate the fractionation behavior of trace elements in a uniquely well-documented basaltic system. A suite of 14 core samples recovered from 1967 to...
The effects of fire on avian communities: Spatio-temporal attributes of the literature 19122003
A. Leidolf, J.A. Bissonette
2009, International Journal of Wildland Fire (18) 609-622
We reviewed the temporal, geographic, and biogeographic distribution, as well as relevant research and publication attributes, of 512 documents addressing the effects of fire on avian communities, to provide an assessment of the scope of this literature and recommendations for future research. We summarized relevant attributes of all documents to...
Mathematical modelling of anisotropy of illite-rich shale
E.M. Chesnokov, D.K. Tiwary, I.O. Bayuk, M.A. Sparkman, R.L. Brown
2009, Conference Paper, Geophysical Journal International
The estimation of illite-rich shale anisotropy to account for the alignment of clays and gas- or brine-filled cracks is presented via mathematical modelling. Such estimation requires analysis to interpret the dominance of one effect over another. This knowledge can help to evaluate the permeability in the unconventional reservoir, stress orientation,...
An Atlas of ShakeMaps and population exposure catalog for earthquake loss modeling
T.I. Allen, D.J. Wald, P.S. Earle, K. D. Marano, A.J. Hotovec, K. Lin, M.G. Hearne
2009, Bulletin of Earthquake Engineering (7) 701-718
We present an Atlas of ShakeMaps and a catalog of human population exposures to moderate-to-strong ground shaking (EXPO-CAT) for recent historical earthquakes (1973-2007). The common purpose of the Atlas and exposure catalog is to calibrate earthquake loss models to be used in the US Geological Survey's Prompt Assessment of Global...
Implications of estimated magmatic additions and recycling losses at the subduction zones of accretionary (non-collisional) and collisional (suturing) orogens
D.W. Scholl, Roland E. von Huene
2009, Geological Society Special Publication 105-125
Arc magmatism at subduction zones (SZs) most voluminously supplies juvenile igneous material to build rafts of continental and intra-oceanic or island arc (CIA) crust. Return or recycling of accumulated CIA material to the mantle is also most vigorous at SZs. Recycling is effected by the processes of sediment subduction, subduction...
Impacts of stormwater runoff in the Southern California Bight: Relationships among plume constituents
K.M. Reifel, S.C. Johnson, P.M. DiGiacomo, M.J. Mengel, N.P. Nezlin, J.A. Warrick, B.H. Jones
2009, Continental Shelf Research (29) 1821-1835
The effects from two winter rain storms on the coastal ocean of the Southern California Bight were examined as part of the Bight '03 program during February 2004 and February-March 2005. The impacts of stormwater from fecal indicator bacteria, water column toxicity, and nutrients were evaluated for five major river...
Assessing the landscape context and conversion risk of protected areas using satellite data products
Leona K. Svancara, J. M. Scott, Thomas R. Loveland, Anna Pidgorna
2009, Remote Sensing of Environment (113) 1357-1369
Since the establishment of the first national park (Yellowstone National Park in 1872) and the first wildlife refuge (Pelican Island in 1903), dramatic changes have occurred in both ecological and cultural landscapes across the U.S. The ability of these protected areas to maintain current levels of biodiversity depend, at least...
Changes in vegetation in northern Alaska under scenarios of climate change, 2003-2100: Implications for climate feedbacks
Eugénie S. Euskirchen, Anthony D. McGuire, F. Stuart Chapin III, S. Yi, Catharine Copass Thompson
2009, Ecological Applications (19) 1022-1043
Assessing potential future changes in arctic and boreal plant species productivity, ecosystem composition, and canopy complexity is essential for understanding environmental responses under expected altered climate forcing. We examined potential changes in the dominant plant functional types (PFTs) of the sedge tundra, shrub tundra, and boreal forest ecosystems in ecotonal...
Hierarchical demographic approaches for assessing invasion dynamics of non-indigenous species: An example using northern snakehead (Channa argus)
Y. Jiao, N.W.R. Lapointe, P. L. Angermeier, B.R. Murphy
2009, Ecological Modelling (220) 1681-1689
Models of species' demographic features are commonly used to understand population dynamics and inform management tactics. Hierarchical demographic models are ideal for the assessment of non-indigenous species because our knowledge of non-indigenous populations is usually limited, data on demographic traits often come from a species' native range, these traits vary...
Instrumental record of debris flow initiation during natural rainfall: Implications for modeling slope stability
D. R. Montgomery, K. M. Schmidt, W. E. Dietrich, J. McKean
2009, Journal of Geophysical Research F: Earth Surface (114)
The middle of a hillslope hollow in the Oregon Coast Range failed and mobilized as a debris flow during heavy rainfall in November 1996. Automated pressure transducers recorded high spatial variability of pore water pressure within the area that mobilized as a debris flow, which initiated...
Forecasting urban growth across the United States-Mexico border
L.M. Norman, M. Feller, Guertin D. Phillip
2009, Computers, Environment and Urban Systems (33) 150-159
The sister-city area of Nogales, Arizona, and Nogales, Sonora, Mexico, is known collectively as Ambos (both) Nogales. This area was historically one city and was administratively divided by the Gadsden Purchase in 1853. These arid-lands have limited and sensitive natural resources. Environmental planning can support sustainable development to accommodate the...
Saturn's north polar cyclone and hexagon at depth revealed by Cassini/VIMS
K. H. Baines, T.W. Momary, L.N. Fletcher, A.P. Showman, M. Roos-Serote, R. H. Brown, B. J. Buratti, R. N. Clark, P. D. Nicholson
2009, Planetary and Space Science (57) 1671-1681
A high-speed cyclonic vortex centered on the north pole of Saturn has been revealed by the visual-infrared mapping spectrometer (VIMS) onboard the Cassini-Huygens Orbiter, thus showing that the tropospheres of both poles of Saturn are occupied by cyclonic vortices with winds exceeding 135 m/s. High-spatial-resolution (~200 km per pixel) images...
Optical dating of the anastasia formation, northeastern florida, USA
K.E. Burdette, J.W. Rink, G.H. Means, R.W. Portell
2009, Southeastern Geology (46) 173-185
The single-aliquot regenerative-dose (SAR) procedure was used to obtain optically stimulated luminescence ages to determine the depositional age of the upper part of the Anastasia Formation. This unit, which crops out along the east coast of Florida, is one of the most culturally and economically important coquina deposits in North...
Sensitivity analysis, calibration, and testing of a distributed hydrological model using error‐based weighting and one objective function
L. Foglia, Mary C. Hill, Steffen W. Mehl, P. Burlando
2009, Water Resources Research (45)
We evaluate the utility of three interrelated means of using data to calibrate the fully distributed rainfall‐runoff model TOPKAPI as applied to the Maggia Valley drainage area in Switzerland. The use of error‐based weighting of observation and prior information data, local sensitivity analysis, and single‐objective function nonlinear regression provides quantitative...
Recent faulting in the Gulf of Santa Catalina: San Diego to Dana Point
H. F. Ryan, M.R. Legg, J. E. Conrad, R. W. Sliter
2009, Special Paper of the Geological Society of America 291-315
We interpret seismic-reflection profiles to determine the location and offset mode of Quaternary offshore faults beneath the Gulf of Santa Catalina in the inner California Continental Borderland. These faults are primarily northwest-trending, right-lateral, strike-slip faults, and are in the offshore Rose Canyon-Newport-Inglewood, Coronado Bank, Palos Verdes, and San Diego Trough...
Experimental alteration of artificial and natural impact melt rock from the Chesapeake Bay impact structure
J. Declercq, H. Dypvik, Per Aagaard, J. Jahren, R.E. Ferrell Jr., J. Wright Horton Jr.
2009, Special Paper of the Geological Society of America 559-569
The alteration or transformation of impact melt rock to clay minerals, particularly smectite, has been recognized in several impact structures (e.g., Ries, Chicxulub, Mj??lnir). We studied the experimental alteration of two natural impact melt rocks from suevite clasts that were recovered from drill cores into the Chesapeake Bay impact structure...
Dune mobility and aridity at the desert margin of northern China at a time of peak monsoon strength
J.A. Mason, H. Lu, Y. Zhou, X. Miao, J. B. Swinehart, Z. Liu, R.J. Goble, S. Yi
2009, Geology (37) 947-950
Wind-blown sands were mobile at many sites along the desert margin in northern China during the early Holocene (11.5-8 ka ago), based on extensive new numerical dating. This mobility implies low effective moisture at the desert margin, in contrast to growing evidence for greater than modern monsoon precipitation at the...
