Landscape resistance to frog movements
M. J. Mazerolle, A. Desrochers
2005, Canadian Journal of Zoology (83) 455-464
An animal's capacity to recolonize a patch depends on at least two components: its ability to detect the patch and its ability to reach it. However, the disruption of such processes by anthropic disturbances could explain low animal abundance patterns observed by many investigators in certain landscapes. Through field experiments,...
Brucite microbialites in living coral skeletons: Indicators of extreme microenvironments in shallow-marine settings
L.D. Nothdurft, G.E. Webb, N.A. Buster, C. W. Holmes, J.E. Sorauf, J.T. Kloprogge
2005, Geology (33) 169-172
Brucite [Mg(OH)2] microbialites occur in vacated interseptal spaces of living scleractinian coral colonies (Acropora, Pocillopora, Porites) from subtidal and intertidal settings in the Great Barrier Reef, Australia, and subtidal Montastraea from the Florida Keys, United States. Brucite encrusts microbial filaments of endobionts (i.e., fungi, green algae, cyanobacteria) growing under organic...
Paleoseismic study of the South Lajas fault: First documentation of an onshore Holocene fault in Puerto Rico
C.S. Prentice, P. Mann
2005, Special Paper of the Geological Society of America 215-222
The island of Puerto Rico is located within the complex boundary between the North America and Caribbean plates. The relative motion along this boundary is dominantly left-lateral strike slip, but compression and extension are locally significant. Although tectonic models proposed for the region suggest the presence of onshore active faults...
Inorganic chemistry, petrography and palaeobotany of Permian coals in the Prince Charles Mountains, East Antarctica
G.R. Holdgate, S. McLoughlin, A.N. Drinnan, R. B. Finkelman, J.C. Willett, L.A. Chiehowsky
2005, International Journal of Coal Geology (63) 156-177
Sampled outcrops of Permian coal seams of the Bainmedart Coal Measures in the Lambert Graben, eastern Antarctica, have been analysed for their proximates, ultimates, ash constituents and trace elements. A similar series of samples has been analysed for their principle maceral and microlithotype components and vitrinite reflectance. The coals are...
Hydrologic regime controls soil phosphorus fluxes in restoration and undisturbed wetlands
A. Aldous, P. McCormick, C. Ferguson, S. Graham, C. Craft
2005, Restoration Ecology (13) 341-347
Many wetland restoration projects occur on former agricultural soils that have a history of disturbance and fertilization, making them prone to phosphorus (P) release upon flooding. To study the relationship between P release and hydrologic regime, we collected soil cores from three restoration wetlands and three undisturbed wetlands around Upper...
Mortality of Rocky Mountain elk in Michigan due to meningeal worm
Louis C. Bender, S. M. Schmitt, E. Carlson, Jonathan B. Haufler, Dean E. Beyer Jr.
2005, Journal of Wildlife Diseases (41) 134-140
Mortality from cerebrospinal parelaphostrongylosis caused by the meningeal worm (Parelaphostrongylus tenuis) has been hypothesized to limit elk (Cervus elaphus nelsoni) populations in areas where elk are conspecific with white-tailed deer (Odocoileus virginianus). Elk were reintroduced into Michigan (USA) in the early 1900s and subsequently greatly increased population size and distribution...
The fate of estrogenic hormones in an engineered treatment wetland with dense macrophytes
J.L. Gray, D.L. Sedlak
2005, Water Environment Research (77) 24-31
Recently, the estrogenic hormones 17??-estradiol (E2) and 17??-ethinyl estradiol (EE2) have been detected in municipal wastewater effluent and surface waters at concentrations sufficient to cause feminization of male fish. To evaluate the fate of steroid hormones in an engineered treatment wetland, lithium chloride, E2, and EE 2 were added to...
Coal systems analysis: A new approach to the understanding of coal formation, coal quality and environmental considerations, and coal as a source rock for hydrocarbons
Peter D. Warwick
2005, Book chapter, Coal Systems Analysis (Special Papers of the Geological Society of America, no. 387)
Coal is an important and required energy source for today's world. Current rates of world coal consumption are projected to continue at approximately the same (or greater) levels well into the twenty-first century. This paper will provide an introduction to the concept of coal systems analysis and the accompanying volume...
The calcite → aragonite transformation in low-Mg marble: Equilibrium relations, transformations mechanisms, and rates
Bradley R. Hacker, David C. Rubie, Stephen H. Kirby, Steven R. Bohlen
2005, Journal of Geophysical Research B: Solid Earth (110) 1-16
Experimental transformation of a rather pure natural calcite marble to aragonite marble did not proceed via the expected straightforward polymorphic replacement. Instead, the small amount of Mg in the starting material (0.36 wt %) was excluded from the growing aragonite and diffused preferentially into the remaining calcite grains, producing Mg-rich...
Crack azimuths on Europa: The G1 lineament sequence revisited
A.R. Sarid, R. Greenberg, G.V. Hoppa, D.M. Brown Jr., P. Geissler
2005, Icarus (173) 469-479
The tectonic sequence in the anti-jovian area covered by regional mapping images from Galileo's orbit E15 is determined from a study of cross-cutting relationships among lineament features. The sequence is used to test earlier results from orbit G1, based on lower resolution images, which appeared to display a progressive change...
Pressurized liquid extraction using water/isopropanol coupled with solid-phase extraction cleanup for industrial and anthropogenic waste-indicator compounds in sediment
M.R. Burkhardt, R.C. ReVello, S.G. Smith, S.D. Zaugg
2005, Analytica Chimica Acta (534) 89-100
A broad range of organic compounds is recognized as environmentally relevant for their potential adverse effects on human and ecosystem health. This method was developed to better determine the distribution of 61 compounds that are typically associated with industrial and household waste as...
Hierarchical faunal filters: An approach to assessing effects of habitat and nonnative species on native fishes
M.C. Quist, F.J. Rahel, W.A. Hubert
2005, Ecology of Freshwater Fish (14) 24-39
Understanding factors related to the occurrence of species across multiple spatial and temporal scales is critical to the conservation and management of native fishes, especially for those species at the edge of their natural distribution. We used the concept of hierarchical faunal filters to provide a framework for investigating the...
Surface deformation associated with the March 1996 earthquake swarm at Akutan Island, Alaska, revealed by C-band ERS and L-band JERS radar interferometry
Z. Lu, C. Wicks Jr., O. Kwoun, J.A. Power, D. Dzurisin
2005, Canadian Journal of Remote Sensing (31) 7-20
In March 1996, an intense earthquake swarm beneath Akutan Island, Alaska, was accompanied by extensive ground cracking but no eruption of Akutan volcano. Radar interferograms produced from L-band JERS-1 and C-band ERS-1/2 images show uplift associated with the swarm by as much as 60 cm on the western...
Serosurvey of selected zoonotic agents in polar bears (Ursus maritimus)
H. Rah, B.B. Chomel, Erich H. Follmann, R.W. Kasten, C.H. Hew, T.B. Farver, G.W. Garner, Steven C. Amstrup
2005, Veterinary Record (156) 7-13
Between 1982 and 1999 blood samples were collected from 500 polar bears (Ursus maritimus) captured in the Beaufort and Chukchi seas, to determine the seroprevalence of Brucella species, Toxoplasma gondii, and Trichinella species infections. The bears were classified into four age groups, cubs, yearlings, subadults and adults. Brucella and Toxoplasma...
Population genetic structure of annual and perennial populations of Zostera marina L. along the Pacific coast of Baja California and the Gulf of California
Raquel Muñiz-Salazar, Sandra L. Talbot, George K. Sage, David H. Ward, Alejandro Cabello-Pasini
2005, Molecular Ecology (14) 711-722
The Baja California peninsula represents a biogeographical boundary contributing to regional differentiation among populations of marine animals. We investigated the genetic characteristics of perennial and annual populations of the marine angiosperm, Zostera marina, along the Pacific coast of Baja California and in the Gulf of California, respectively. Populations of Z....
Placing the pieces: Reconstructing the original property mosaic in a warrant and patent watershed
Daniel J Bain, G. S. Brush
2005, Landscape Ecology (19) 843-856
Recent research shows that land use history is an important determinant of current ecosystem function. In the United States, characterization of land use change following European settlement requires reconstruction of the original property mosaic. However, this task is difficult in unsystematically surveyed areas east of the Appalachian Mountains. The Gwynns...
Geographic variation in survival and migratory tendency among North American Common Mergansers
John M. Pearce, John A. Reed, Paul L. Flint
2005, Journal of Field Ornithology (76) 109-118
Movement ecology and demographic parameters for the Common Merganser (Mergus merganser americanus) in North America are poorly known. We used band-recovery data from five locations across North America spanning the years 1938–1998 to examine migratory patterns and estimate survival rates. We examined competing time-invariant, age-graduated models with program MARK...
Catastrophic precipitation-triggered lahar at Casita volcano, Nicaragua: Occurrence, bulking and transformation
K. M. Scott, J.W. Vallance, N. Kerle, J.L. Macias, W. Strauch, G. Devoli
2005, Earth Surface Processes and Landforms (30) 59-79
A catastrophic lahar began on 30 October 1998, as hurricane precipitation triggered a small flank collapse of Casita volcano, a complex and probably dormant stratovolcano. The initial rockslide‐debris avalanche evolved on the flank to yield a watery debris flood with a sediment concentration less than 60 per cent by volume...
Reconnaissance study of late quaternary faulting along Cerro Goden fault zone, western Puerto Rico
P. Mann, C.S. Prentice, J.-C. Hippolyte, N.R. Grindlay, L.J. Abrams, D. Lao-Davila
2005, Special Paper of the Geological Society of America (385) 115-137
The Cerro Goden fault zone is associated with a curvilinear, continuous, and prominent topographic lineament in western Puerto Rico. The fault varies in strike from northwest to west. In its westernmost section, the fault is ∼500 m south of an abrupt, curvilinear mountain front separating the 270- to 361-m-high La...
Eastern rim of the Chesapeake Bay impact crater: Morphology, stratigraphy, and structure
C. W. Poag
2005, Special Paper of the Geological Society of America 117-130
This study reexamines seven reprocessed (increased vertical exaggeration) seismic reflection profiles that cross the eastern rim of the Chesapeake Bay impact crater. The eastern rim is expressed as an arcuate ridge that borders the crater in a fashion typical of the "raised" rim documented in many well preserved complex impact...
Source process of a long-period event at Kilauea volcano, Hawaii
Hiroyuki Kumagai, B. A. Chouet, P.B. Dawson
2005, Geophysical Journal International (161) 243-254
We analyse a long-period (LP) event observed by a dense seismic network temporarily operated at Kilauea volcano, Hawaii, in 1996. We systematically perform spectral analyses, waveform inversions and forward modeling of the LP event to quantify its source process. Spectral analyses identify two dominant spectral frequencies at 0.6 and 1.3...
Efficacy of an infectious hematopoietic necrosis (IHN) virus DNA vaccine in Chinook Oncorhynchus tshawytscha and sockeye O. nerka salmon
K.A. Garver, S. E. LaPatra, Gael Kurath
2005, Diseases of Aquatic Organisms (64) 13-22
The level of protective immunity was determined for Chinook Oncorhynchus tshawytscha and sockeye/kokanee salmon (anadromous and landlocked) O. nerka following intramuscular vaccination with a DNA vaccine against the aquatic rhabdovirus, infectious hematopoietic necrosis virus (IHNV). A DNA vaccine containing the glycoprotein gene of IHNV protected Chinook and sockeye/kokanee salmon against...
Use of prepositioned grid electrofishers for the collection of robust redhorse broodstock
T.B. Grabowski, J. Jeffery Isely
2005, North American Journal of Aquaculture (67) 89-92
We investigated the potential of prepositioned grid electrofishers as a means of collecting broodstock for the rare robust redhorse Moxostoma robustum. We found that combined with visual observation, this technique allowed for the efficient capture of fish in breeding condition. We were able to harvest eggs in the field and...
Summer low flows in New England during the 20th Century
Glenn A. Hodgkins, R. W. Dudley, Thomas G. Huntington
2005, Journal of the American Water Resources Association (41) 403-412
High springtime river flows came earlier by one to two weeks in large parts of northern New England during the 20th Century. In this study it was hypothesized that late spring/early summer recessional flows and late summer/early fall low flows could also be occurring earlier. This could result in a...
Detritus fuels ecosystem metabolism but not metazoan food webs in San Francisco estuary's freshwater delta
W. V. Sobczak, J. E. Cloern, A.D. Jassby, B.E. Cole, T.S. Schraga, A. Arnsberg
2005, Estuaries (28) 124-137
Detritus from terrestrial ecosystems is the major source of organic matter in many streams, rivers, and estuaries, yet the role of detritus in supporting pelagic food webs is debated. We examined the importance of detritus to secondary productivity in the Sacramento and San Joaquin River Delta (California, United States), a...
