Millennial-scale variability during the last glacial in vegetation records from North America
Gonzalo Jiménez-Moreno, R. Scott Anderson, S. Desprat, L.D. Grigg, E.C. Grimm, L.E. Heusser, Brian F. Jacobs, C. Lopez-Martinez, C.L. Whitlock, Debra A. Willard
2010, Quaternary Science Reviews (29) 2865-2881
High-resolution pollen records from North America show that terrestrial environments were affected by Dansgaard-Oeschger (D-O) and Heinrich climate variability during the last glacial. In the western, more mountainous regions, these climate changes are generally observed in the pollen records as altitudinal movements of climate-sensitive plant species, whereas in the southeast,...
Effects of ungulate management on vegetation at Hakalau Forest National Wildlife Refuge, Hawai'i Island
S.C. Hess, J.J. Jeffrey, L.W. Pratt, D.L. Ball
2010, Pacific Conservation Biology (16) 144-150
We compiled and analysed data from 1987-2004 on vegetation monitoring during feral ungulate management at Hakalau Forest National Wildlife Refuge, a tropical montane rainforest on the island of Hawai'i All areas in the study had previously been used by ungulates, but cattle (Bos taurus) were removed and feral pig (Sus...
Fine gravel controls hydrologic and erodibility responses to trampling disturbance for coarse-textured soils with weak cyanobacterial crusts
J. E. Herrick, J. W. Van Zee, J. Belnap, J.R. Johansen, M. Remmenga
2010, Catena (83) 119-126
We compared short-term effects of lug-soled boot trampling disturbance on water infiltration and soil erodibility on coarse-textured soils covered by a mixture of fine gravel and coarse sand over weak cyanobacterially-dominated biological soil crusts. Trampling significantly reduced final infiltration rate and total infiltration and increased sediment generation from small (0.5m2)...
Effects of exploitation on black bear populations at White River National Wildlife Refuge
J. D. Clark, R. Eastridge, M.J. Hooker
2010, Journal of Wildlife Management (74) 1448-1456
We live-trapped American black bears (Ursus americanus) and sampled DNA from hair at White River National Wildlife Refuge, Arkansas, USA, to estimate annual population size (N), growth (λ), and density. We estimated N and λ with open population models, based on live-trapping data collected from 1998 through 2006, and robust...
Repeat photography and low-elevation fire responses in the southwestern United States
Raymond M. Turner, Robert H. Webb, Todd C. Esque, Garry F. Rogers
Robert H. Webb, Diane E. Boyer, Raymond M. Turner, editor(s)
2010, Book chapter, Repeat photography methods and applications in the natural sciences
Tropical shoreline ice in the late Cambrian: Implications for earth's climate between the Cambrian Explosion and the Great Ordovician Biodiversification Event
Anthony C. Runkel, T.J. MacKey, Clinton A. Cowan, David L. Fox
2010, GSA Today (20) 4-10
Middle to late Cambrian time (ca. 513 to 488 Ma) is characterized by an unstable plateau in biodiversity, when depauperate shelf faunas suffered repeated extinctions. This poorly understood interval separates the Cambrian Explosion from the Great Ordovician Biodiversification Event and is generally regarded as a time of sustained greenhouse conditions....
Shell anomalies observed in a population of Archaias angulatus (Foraminifera) from the Florida Keys (USA) sampled in 1982-83 and 2006-07
H.C. Souder, B. McCloskey, P. Hallock, R. Byrne
2010, Marine Micropaleontology (77) 71-81
Archived specimens of Archaias angulatus collected live at a depth of < 2. m in John Pennekamp Coral Reef State Park, Key Largo, Florida, in June, September and December 1982, and March 1983, were compared to specimens collected live from the same site and months in 2006-07. Shells were examined...
A 15 000-year record of climate change in northern New Mexico, USA, inferred from isotopic and elemental contents of bog sediments
L. M. Cisneros-Dozal, J.M. Heikoop, J. Fessenden, R. Scott Anderson, P.A. Meyers, Craig D. Allen, M. Hess, T. Larson, G. Perkins, M. Rearick
2010, Journal of Quaternary Science (25) 1001-1007
Elemental (C, N, Pb) and isotopic (δ13C, δ15N) measurements of cored sediment from a small bog in northern New Mexico reveal changes in climate during the Late Pleistocene and Holocene. Abrupt increases in Pb concentration and δ13C values ca. 14 420 cal. YBP indicate significant runoff to the shallow lake that...
Phosphorus dynamics in soils irrigated with reclaimed waste water or fresh water - A study using oxygen isotopic composition of phosphate
I. Zohar, A. Shaviv, M. Young, Carol Kendall, Steven R. Silva, A. Paytan
2010, Geoderma (159) 109-121
Transformations of phosphate (Pi) in different soil fractions were tracked using the stable isotopic composition of oxygen in phosphate (δ18Op) and Pi concentrations. Clay soil from Israel was treated with either reclaimed waste water (secondary, low grade) or with fresh water amended with a chemical fertilizer of a known isotopic...
Depositional setting, petrology and chemistry of Permian coals from the Paraná Basin: 2. South Santa Catarina Coalfield, Brazil
W. Kalkreuth, M. Holz, A. Mexias, M. Balbinot, J. Levandowski, J. Willett, R. Finkelman, H. Burger
2010, International Journal of Coal Geology (84) 213-236
In Brazil economically important coal deposits occur in the southern part of the Paraná Basin, where coal seams occur in the <a title="Learn more about Permian from ScienceDirect's AI-generated Topic...
Sharing the floodplain: Mediated modeling for environmental management
S.S. Metcalf, E. Wheeler, T. K. BenDor, S.J. Lubinski, B.M. Hannon
2010, Environmental Modelling and Software (25) 1282-1290
Complex ecosystems, such as the Upper Mississippi River (UMR), present major management challenges. Such systems often provide a range of ecosystem services that are differentially valued by stakeholders representing distinct interests (e.g., agriculture, conservation, navigation) or institutions (e.g., federal and state agencies). When no single entity has the knowledge or...
Effect of imperfect detectability on adaptive and conventional sampling: Simulated sampling of freshwater mussels in the upper Mississippi River
D. R. Smith, B. R. Gray, T.J. Newton, D. Nichols
2010, Environmental Monitoring and Assessment (170) 499-507
Adaptive sampling designs are recommended where, as is typical with freshwater mussels, the outcome of interest is rare and clustered. However, the performance of adaptive designs has not been investigated when outcomes are not only rare and clustered but also imperfectly detected. We address this combination of challenges using data...
Genetic characterization of Neotropical Jabiru Storks: Insights for conservation
I.F. Lopes, S. M. Haig, S.N.D. Lama
2010, Waterbirds (33) 425-437
Jabiru Stork (Jabiru mycteria is listed under Appendix I of CITES and considered threatened in Central America. The first population genetic analysis of Jabiru Storks was carried out using mitochondrial DNA (mtDNA) control region sequences (520 bp) and five heterologous microsatellite loci. Samples were collected from the field (N =...
The role of African dust in the formation of Quaternary soils on Mallorca, Spain and implications for the genesis of Red Mediterranean soils
D.R. Muhs, J. Budahn, A. Avila, G. Skipp, J. Freeman, D. Patterson
2010, Quaternary Science Reviews (29) 2518-2543
African dust additions explain the origin of terra rossa soils that are common on the carbonate-platform island of Mallorca, Spain. Mineralogical and geochemical analyses indicate that Quaternary carbonate eolianites on Mallorca have a very high purity, usually composed of more than 90% carbonate minerals (calcite, dolomite, and aragonite). In contrast,...
Detrital zircon analysis of Mesoproterozoic and neoproterozoic metasedimentary rocks of northcentral idaho: Implications for development of the Belt-Purcell basin
R. S. Lewis, J.D. Vervoort, R. F. Burmester, P.J. Oswald
2010, Canadian Journal of Earth Sciences (47) 1383-1404
The authors analyzed detrital zircon grains from 10 metasedimentary rock samples of the Priest River complex and three other amphibolite-facies metamorphic sequences in north-central Idaho to test the previous assignment of these rocks to the Mesoproterozoic Belt-Purcell Supergroup. Zircon grains from two samples of the Prichard Formation (lower Belt) and...
Comment on "analysis of pumping test data for determining unconfined-aquifer parameters: Composite analysis or not?": Paper published in Hydrogeology Journal (2009) 17:1133-1147, by Hund-Der Yeh and Yen-Chen Huang
Allen F. Moench
2010, Hydrogeology Journal (18) 1975-1977
No abstract available....
Debris flows resulting from glacial-lake outburst floods in tibet, China
P. Cui, C. Dang, Z. Cheng, K. Scott
2010, Physical Geography (31) 508-527
During the last 70 years of general climatic amelioration, 18 glacial-lake outburst floods (GLOFs) and related debris flows have occurred from 15 moraine-dammed lakes in Tibet, China. Catastrophic loss of life and property has occurred because of the following factors: the large volumes of water discharged, the steep gradients of...
Species within the Genus Encyonema Kützing, Including Two New Species Encyonema reimeri sp. nov. and E. nicafei sp. nov. and E. stoermeri nom. nov., stat. nov.
S. A. Spaulding, J. R. Pool, S. I. Castro, F. Hinz
2010, Proceedings of the Academy of Natural Sciences of Philadelphia (160) 57-71
We observed six diatom taxa from North American samples and one taxon from China that are considered within the genus Encyonema Kützing. Two of the taxa are described as new, Encyonema reimeri Spaulding, Pool et Castro sp. nov. and Encyonema nicafei Spaulding sp. nov. A third taxon, Encyonema stoermeri Spaulding, Pool et Castro nom. nov., shat. nov. is assigned a new...
Mapping the last frontier in Yellowstone National Park: Yellowstone Lake
Lisa A. Morgan, Wayne (Pat) Shanks
Jerry Johnson, editor(s)
2010, Book chapter, Knowing Yellowstone: Science in America's first national park
No abstract available....
Tree-ring cutting dates and demographic change in the Southern Colorado Plateau and Rio Grande regions
Michael S. Berry, Larry V. Benson
Timothy A. Kohler, Mark D. Varien, Aaron M. Wright, editor(s)
2010, Book chapter, Leaving Mesa Verde: Peril and change in the thirteenth-century Southwest
No abstract available....
Detailed p- and s-wave velocity models along the LARSE II transect, Southern California
J.M. Murphy, G. S. Fuis, T. Ryberg, W. J. Lutter, R. D. Catchings, M. R. Goldman
2010, Bulletin of the Seismological Society of America (100) 3194-3212
Structural details of the crust determined from P-wave velocity models can be improved with S-wave velocity models, and S-wave velocities are needed for model-based predictions of strong ground motion in southern California. We picked P- and S-wave travel times for refracted phases from explosive-source shots of the Los Angeles Region...
Tree mortality following prescribed fire and a storm surge event in Slash Pine (pinus elliottii var. densa) forests in the Florida Keys, USA
Jay P. Sah, Michael S. Ross, James R. Snyder, Danielle E. Ogurcak
2010, International Journal of Forestry Research (10)
In fire-dependent forests, managers are interested in predicting the consequences of prescribed burning on postfire tree mortality. We examined the effects of prescribed fire on tree mortality in Florida Keys pine forests, using a factorial design with understory type, season, and year of burn as factors. We also used logistic...
Passive seismic monitoring of natural and induced earthquakes: Case studies, future directions and socio-economic relevance
Marco Bohnhoff, Georg Dresen, William L. Ellsworth, Hisao Ito
Sierd Cloetingh, Jorg Negendank, editor(s)
2010, Book chapter, New frontiers in integrated solid earth sciences
An important discovery in crustal mechanics has been that the Earth’s crust is commonly stressed close to failure, even in tectonically quiet areas. As a result, small natural or man-made perturbations to the local stress field may trigger earthquakes. To understand these processes, Passive Seismic Monitoring (PSM) with seismometer arrays...
Use of chemosensory cues as repellents for sea lamprey: Potential directions for population management
I. Imre, G.E. Brown, R.A. Bergstedt, R. McDonald
2010, Journal of Great Lakes Research (36) 790-793
Sea lamprey invaded the Great Lakes in the early 20th century and caused an abrupt decline in the population densities of several native fish species. The integrated management of this invasive species is composed of chemical (lampricide) applications, low-head barrier dams, adult trapping and sterile male release. Recently, there has...
Habitat suitability and conservation of the Giant Gartersnake (Thamnophis gigas) in the Sacramento Valley of California
B.J. Halstead, G.D. Wylie, Michael L. Casazza
2010, Copeia 591-599
Resource managers often have little information regarding the habitat requirements and distribution of rare species. Factor analysis-based habitat suitability models describe the ecological niche of a species and identify locations where these conditions occur on the landscape using existing occurrence data. We used factor analyses to assess the suitability of...
