Demographic studies of Joshua trees in Mojave Desert National Parks: demography with emphasis on germination and recruitment
T. C. Esque, B. Reynolds, L.A. DeFalco, B.A. Waitman
Debra Hughson, editor(s)
2010, Science Newsletter 9-12
The study of population change with regard to reproduction, seed dispersal, and germination, establishment, growth, and survival/mortality is known as demography. Demographic studies provide managers with information to assess future trends on the density, distribution, health, and population changes of importance or value, including Joshua trees (Yucca brevifolia). Demographic research...
Aggressive interactions between the invasive Rio Grande cichlid (Herichthys cyanoguttatus) and native bluegill (Lepomis macrochirus), with notes on redspotted sunfish (Lepomis miniatus)
O. Thomas Lorenz, Martin T. O’ Connell, Pamela J. Schofield
2010, Journal of Ethology (29) 39-46
The Rio Grande cichlid (Herichthys cyanoguttatus) has been established in the Greater New Orleans Metropolitan area for at least 20 years, and its effect on native fishes is unknown. Behavioral trials were performed to determine if aggressive interactions occur between invasive H. cyanoguttatus and native bluegill (Lepomis macrochirus). When defending...
Decadal trends in marine reserves reveal differential rates of change in direct and indirect effects
R.C. Babcock, N.T. Shears, A.C. Alcala, N.S. Barrett, G.J. Edgar, K. D. Lafferty, T.R. McClanahan, G.R. Russ
2010, Proceedings of the National Academy of Sciences (107) 18256-18261
Decadal-scale observations of marine reserves suggest that indirect effects on taxa that occur through cascading trophic interactions take longer to develop than direct effects on target species. Combining and analyzing a unique set of long-term time series of ecologic data in and out of fisheries closures from disparate regions, we...
Acute toxicity of diphacinone in Northern bobwhite: Effects on survival and blood clotting
Barnett A. Rattner, Katherine E. Horak, Sarah E. Warner, John J. Johnston
2010, Ecotoxicology and Environmental Safety (73) 1159-1164
The anticoagulant rodenticide diphacinone was slightly toxic (acute oral LD50 2014 mg/kg) to Northern bobwhite (Colinus virginianus) in a 14-day acute toxicity trial. Precise and sensitive assays of blood clotting (prothrombin time, Russell’s Viper venom time, and thrombin clotting time) were adapted for use in quail, and this combination of assays is recommended to measure the effects...
Absorption and biotransformation of polybrominated diphenyl ethers DE-71 and DE-79 in chicken (Gallus gallus), mallard (Anas platyrhynchos), American kestrel (Falco sparverius) and black-crowned night-heron (Nycticorax nycticorax) eggs
Moira A. McKernan, Barnett A. Rattner, Jeff S. Hatfield, Robert C. Hale, Mary Ann Ottinger
2010, Chemosphere (79) 100-109
We recently reported that air cell administration of penta-brominated diphenyl ether (penta-BDE; DE-71) evokes biochemical and immunologic effects in chicken (Gallus gallus) embryos at very low doses, and impairs pipping (i.e., stage immediately prior to hatching) and hatching success at 1.8 ug g-1 egg (actual dose absorbed) in American kestrels...
Conservation planning for imperiled aquatic species in an urbanizing environment
Seth J. Wenger, Mary Freeman, Laurie A. Fowler, Byron J. Freeman, James T. Peterson
2010, Landscape and Urban Planning (97) 11-21
As the global area devoted to urban uses grows, an increasing number of freshwater species will face imperilment due to urbanization effects. Management of these impacts on both private and public lands is necessary to ensure species persistence. Such management entails several hallenges: (1) development of a management policy appropriate...
Contribution of PAHs from coal-tar pavement sealcoat and other sources to 40 U.S. lakes
Peter C. Van Metre, Barbara Mahler
2010, Science of the Total Environment (409) 334-344
Contamination of urban lakes and streams by polycyclic aromatic hydrocarbons (PAHs) has increased in the United States during the past 40 years. We evaluated sources of PAHs in post-1990 sediments in cores from 40 lakes in urban areas across the United States using a contaminant mass-balance receptor model and including...
Correlating seabird movements with ocean winds: linking satellite telemetry with ocean scatterometry.
Josh Adams, Stephanie Flora
2010, Marine Biology (157) 915-929
Satellite telemetry studies of the movements of seabirds are now common and have revealed impressive flight capabilities and extensive distributions among individuals and species at sea. Linking seabird movements with environmental conditions over vast expanses of the world's open ocean, however, remains difficult. Seabirds of the order Procellariiformes (e.g., petrels,...
Archive of Sediment Data Collected around the Chandeleur Islands and Breton Island in 2007 and 1987 (Vibracore Surveys: 07SCC04, 07SCC05, and 87039)
C.A. Dreher, J. G. Flocks, M.A. Kulp, N.F. Ferina
2010, Data Series 542
In 2006 and 2007, the U.S. Geological Survey (USGS) and collaborators at the University of New Orleans (UNO) collected high-resolution seismic profiles and subsurface cores around the Chandeleur and Breton Islands, Louisiana (Study Area Map). To ground-truth the acoustic seismic surveys conducted in 2006, 124 vibracores were acquired during...
Comparative toxicity of diphacinone to northern bobwhite (Colinus virginianus) and American kestrels (Falco sparverius)
Barnett A. Rattner, Katherine E. Horak, Sarah E. Warner, Daniel D. Day, John J. Johnston
2010, Book
The acute oral toxicity of the anticoagulant rodenticide diphacinone was found to be about 20 times greater to American kestrels (LD50=97 mg/kg) than to northern bobwhite (LD50=2,014 mg/kg). Several precise and sensitive clotting assays (prothrombin time, Russell's Viper venom time, thrombin clotting time) were adapted for use in these species,...
Comment on "Near-surface location, geometry, and velocities of the Santa Monica fault zone, Los Angeles, California"
Thomas L. Pratt, James F. Dolan
2010, Bulletin of the Seismological Society of America (100) 2329-2337
No abstract available. ...
Climate change effects on an endemic-rich edaphic flora: resurveying Robert H. Whittaker's Siskiyou sites (Oregon, USA)
Ellen Ingman Damschen, Susan Harrison, James B. Grace
2010, Ecology (91) 3609-3619
Species with relatively narrow niches, such as plants restricted (endemic) to particular soils, may be especially vulnerable to extinction under a changing climate due to the enhanced difficulty they face in migrating to suitable new sites. To test for community-level effects of climate change, and to compare such effects in...
Chronic toxicity of diphenhydramine hydrochloride and erythromycin thiocyanate to Daphnia, Daphnia magna, in a continuous exposure test system
J.R. Meinertz, Theresa M. Schreier, J.A. Bernardy, J.L. Franz
2010, Bulletin of Environmental Contamination and Toxicology (85) 447-451
Diphenhydramine hydrochloride (DH; Benadryl TM, an over-the-counter antihistamine) and erythromycin thiocyanate (ET; a commonly used macrolide antibiotic) are pharmaceutical compounds whose chronic toxicity to Daphnia magna had not been characterized. Continuous exposure to DH concentrations about 5 times greater than the maximum reported environmental concentration of 0.023 lg/L for 21...
Characterization of highly informative cross-species microsatellite panels for the Australian dugong (Dugong dugon) and Florida manatee (Trichechus manatus latirostris) including five novel primers
Margaret Kellogg Hunter, Damien Broderick, Jennifer R. Ovenden, Kimberly Pause Tucker, Robert K. Bonde, Peter M. McGuire, Janet M. Lanyon
2010, Molecular Ecology Resources (10) 368-377
The Australian dugong (Dugong dugon) and Florida manatee (Trichechus manatus latirostris) are threatened species of aquatic mammals in the order Sirenia. Sirenian conservation and management actions would benefit from a more complete understanding of genetic diversity and population structure. Generally, species-specific microsatellite markers are employed in conservation genetic studies; however,...
Changes in the status of harvested rice fields in the Sacramento Valley, California: Implications for wintering waterfowl.
Michael R. Miller, Jay D. Garr, Peter S. Coates
2010, Wetlands (30) 939-947
Harvested rice fields provide critical foraging habitat for wintering waterfowl in North America, but their value depends upon post-harvest treatments. We visited harvested ricefields in the Sacramento Valley, California, during the winters of 2007 and 2008 (recent period) and recorded their observed status as harvested (standing or mechanically modified stubble),...
Changes in the timing of snowmelt and streamflow in Colorado: A response to recent warming
David W. Clow
2010, Journal of Climate (23) 2293-2306
Trends in the timing of snowmelt and associated runoff in Colorado were evaluated for the 1978-2007 water years using the regional Kendall test (RKT) on daily snow-water equivalent (SWE) data from snowpack telemetry (SNOTEL) sites and daily streamflow data from headwater streams. The RKT is a robust, nonparametric test that...
Change in avian abundance predicted from regional forest inventory data
Daniel J. Twedt, John M. Tirpak, D. Todd Jones-Farrand, Frank R. Thompson III, William B. Uihlein, Jane A. Fitzgerald
2010, Forest Ecology and Management (260) 1241-1250
An inability to predict population response to future habitat projections is a shortcoming in bird conservation planning. We sought to predict avian response to projections of future forest conditions that were developed from nationwide forest surveys within the Forest Inventory and Analysis (FIA) program. To accomplish this, we evaluated the...
Challenges and opportunities for integrating lake ecosystem modelling approaches
Wolf M. Mooij, Dennis Trolle, Erik Jeppesen, George Arhonditsis, Pavel V. Belolipetsky, Deonatus B.R. Chitamwebwa, Andrey G. Degermendzhy, Donald L. DeAngelis, Lisette N. De Senerpont Domis, Andrea S. Downing, J. Alex Elliott, Carlos Ruberto Fragoso Jr., Ursula Gaedke, Svetlana N. Genova, Ramesh D. Gulati, Lars Hakanson, David P. Hamilton, Matthew R. Hipsey, Jochem ’t Hoen, Stephan Hulsmann, F. Hans Los, Vardit Makler-Pick, Thomas Petzoldt, Igor G. Prokopkin, Karsten Rinke, Sebastiaan A. Schep, Koji Tominaga, Anne A. Van Dam, Egbert H. Van Nes, Scott A. Wells, Jan H. Janse
2010, Aquatic Ecology (44) 633-667
A large number and wide variety of lake ecosystem models have been developed and published during the past four decades. We identify two challenges for making further progress in this field. One such challenge is to avoid developing more models largely following the concept of others (‘reinventing the wheel’). The...
Centennial eolian cyclicity in the Great Plains, USA: A dominant pattern of wind transport over the past 4000 years?
Antje Schwalb, Walter E. Dean, C. Sherilyn Fritz, Christoph E. Geiss, Bernd Kromer
2010, Quaternary Science Reviews (29) 2325-2339
Proxy evidence at decadal resolution from Late Holocene sediments from Pickerel Lake, northeastern South Dakota, shows distinct centennial cycles (400-700 years) in magnetic susceptibility; contents of carbonate, organic carbon, and major elements; abundance in ostracodes; and delta18O and delta13C values in calcite. Proxies indicate cyclic changes in eolian input, productivity,...
Certhiasomus, a new genus of woodcreeper (Aves: Passeriformes: Dendrocolaptidae)
Elizabeth Derryberry, Santiago Claramunt, R. Terry Chesser, Alexandre Aleixo, Joel Cracraft, Robert G. Moyle, Robb T. Brumfield
2010, Zootaxa 44-44
Phylogenetic analysis of the family Dendrocolaptidae (Aves: Passeriformes) indicates that the two species traditionally placed in the genus Deconychura are not sister taxa. Certhiasomus, a new genus of woodcreeper, is described for one of these species, C. stictolaemus....
A review of sediment budget imbalances along Fire Island, New York: Can nearshore geologic framework and patterns of shoreline change explain the deficit?
Cheryl J. Hapke, Erika E. Lentz, Paul T. Gayes, Clayton A. McCoy, Rachel E. Henderson, William C. Schwab, S. Jeffress Williams
2010, Journal of Coastal Research (26) 510-522
Sediment budget analyses conducted for annual to decadal timescales report variable magnitudes of littoral transport along the south shore of Long Island, New York. It is well documented that the primary transport component is directed alongshore from east to west, but relatively little information has been reported concerning the directions...
A rapid, strong, and convergent genetic response to urban habitat fragmentation in four divergent and widespread vertebrates
Kathleen Semple Delaney, Seth P.D. Riley, Robert N. Fisher
2010, PLoS ONE (5)
Background: Urbanization is a major cause of habitat fragmentation worldwide. Ecological and conservation theory predicts many potential impacts of habitat fragmentation on natural populations, including genetic impacts. Habitat fragmentation by urbanization causes populations of animals and plants to be isolated in patches of suitable habitat that are surrounded by non-native...
A rapid method for the measurement of sulfur hexafluoride (SF6), trifluoromethyl sulfur pentafluoride (SF5CF3), and Halon 1211 (CF2ClBr) in hydrologic tracer studies
Eurybiades Busenberg, Niel Plummer
2010, Geochemistry, Geophysics, Geosystems (11)
A rapid headspace method for the simultaneous laboratory determination of intentionally introduced hydrologic tracers, sulfur hexafluoride (SF6), trifluoromethyl sulfur pentafluoride (SF5CF3), Halon 1211 (CF2ClBr), and other halocarbons in water and gases is described. The high sensitivity of the procedure allows for introduction of minimal tracer mass (a few grams) into...
Can we improve the salinity tolerance of genotypes of Taxodium by using varietal and hybrid crosses?
Lijing Zhou, David L. Creech, Ken W. Krauss, Yin Yunlong, David L. Kulhavy
2010, HortScience (45) 1773-1778
Taxodium distichum (L.) Rich. var. distichum [baldcypress (BC)], Taxodium distichum var. mexicanum Gordon [Montezuma cypress (MC)], and a Taxodium hybrid (\'Nanjing Beauty\': BC x MC cross, T302) were evaluated for salt tolerance in 2006 at Nacogdoches, TX. Plants were irrigated weekly with four levels of salinity [0, 1, 3.5, and...
Carbon exchange in biological soil crust communities under differential temperatures and soil water contents: Implications for global change
Edmund E. Grote, Jayne Belnap, David C. Housman, Jed P. Sparks
2010, Global Change Biology (16) 2763-2774
Biological soil crusts (biocrusts) are an integral part of the soil system in arid regions worldwide, stabilizing soil surfaces, aiding vascular plant establishment, and are significant sources of ecosystem nitrogen and carbon. Hydration and temperature primarily control ecosystem CO2 flux in these systems. Using constructed mesocosms for incubations under controlled laboratory...
