Results 31 to 40 of about 658,079 (225)

Biogeography of Atlantic Salmon in the Cape Breton Highlands, Canada

Fisheries Management and Ecology, EarlyView.
ABSTRACT Atlantic Salmon (Salmo salar) populations have experienced significant declines in recent decades. In Canada, conservation efforts are divided into 16 designatable units (DUs) to address unique regional challenges among genetically distinct populations.
Oscar D. P. Notman‐Grobler, Josh Roland, Ken Oakes, Morgan L. Piczak, Robert J. Lennox   +4 more
wiley   +1 more source

Trechus (Coleoptera: Carabidae) of Appalachia: A Phylogenetic Insight into the History of High Elevation Leaf Litter Communities

Diversity
Elevation gradients provide a wealth of habitats for a wide variety of organisms. The southern Appalachian Mountains in eastern United States are known for their high biodiversity and rates of endemism in arthropods, including in high-elevation leaf ...
Patricia L. S. Wooden, Michael S. Caterino   +1 more
doaj   +1 more source

Impact of elliptical boreholes on in situ stress estimation from leak-off test data

Petroleum Science, 2018
We developed an inversion technique to determine in situ stresses for elliptical boreholes of arbitrary trajectory. In this approach, borehole geometry, drilling-induced fracture information, and other available leak-off test data were used to construct ...
Hong Xue Han, Shunde Yin, Bernt Sigve Aadnoy   +2 more
doaj   +1 more source

Drowned carbonate‐rimmed margin controlling shelf‐edge delta progradation and sedimentation dynamics: Upper Cretaceous Woodbine Formation, Texas, USA

Sedimentology, EarlyView.
ABSTRACT Shelf‐edge deltas are commonly interpreted to record basinward facies migration across uninterrupted, gently dipping shelf margins; however, examples from mixed siliciclastic‐carbonate margins reveal more complex depositional dynamics. Periods and areas of carbonate sedimentation within mixed siliciclastic‐carbonate margins can modify shelf ...
Abdulkarim Al‐Hussaini, Cornel Olariu, Charles Kerans, Ronald Steel   +3 more
wiley   +1 more source

Letterhead, Appalachian National Park Association

, 2015
The letterhead for the Appalachian National Park Association lists the officers and committees of the organization, beginning in 1899. At the very first meeting of the association, George Powell was elected president and Chase Ambler was named secretary ...
Appalachian National Park Association;
core   +2 more sources

Suite of Regional Seismic Velocity Models for the U.S. Atlantic and Gulf Coastal Plains (CPVMv2.0): Incorporating Epistemic Uncertainty in Velocity Models

Earthquake Spectra, Volume 42, Issue 4, November 2026.
The U.S. Atlantic and Gulf Coastal Plain (CP) sediments are kilometers‐thick, low‐velocity deposits underlain by high‐velocity bedrock that create regional patterns of amplification and attenuation of ground motions. Capturing these effects is challenging because of the limited subsurface information available, particularly the shear wave velocity (VS)
Cassie Gann‐Phillips, Ashly Cabas, Chunyang Ji, Oliver Boyd, James Kaklamanos, Chris Cramer   +5 more
wiley   +1 more source

Far–field tectonic controls on deposition in the Appalachian Basin – A case study of Late Cambrian–Late Ordovician strata in Morrow County, Ohio

Results in Earth Sciences
Far–field tectonics can often be overlooked when studying orogens, particularly when much of the deformation occurs near the loading loci. As stresses are propagated further from the loading into the craton, whether compressional, extensional, or shear ...
Julie M. Bloxson, Adrian I. Valdez
doaj   +1 more source

Accelerated mass extinction in an isolated biota during Late Devonian climate changes

Scientific Reports, 2021
The fossil record can illuminate factors that contribute to extinction risk during times of global environmental disturbance; for example, inferred thermal tolerance was an important predictor of extinction during several mass extinctions that ...
Jaleigh Q. Pier, Sarah K. Brisson, J. Andrew Beard, Michael T. Hren, Andrew M. Bush   +4 more
doaj   +1 more source

Sediment Vulnerability Ranking for River Basins Across the Contiguous U.S. Using Integrated Biophysical and Social‐Ecological Data

JAWRA Journal of the American Water Resources Association, Volume 62, Issue 5, October 2026.
ABSTRACT Nearly half of streams and rivers in the United States (U.S.) have fair to poor conditions for aquatic ecosystem health as declared by the U.S. Environmental Protection Agency, and sediment was identified as a primary factor impairing these waterbodies.
Nicholas A. Sutfin, Allen C. Gellis, Nancy Baker, Christopher H. Conaway, Katherine J. Skalak   +4 more
wiley   +1 more source

Emergent Headwater Types for Watershed Monitoring, Research, and Planning

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Headwaters—that is headwater streams and the watersheds they drain—strongly influence water quality, ecosystem services, and hydrologic connectivity, yet remain poorly mapped, monitored, and understood at large spatial scales. Using available spatial data to classify headwater “types” could therefore enhance the utility of sparse monitoring ...
E. C. Seybold, J. Hammond, A. Husic, H. McMillan, H. E. Golden, J. R. Christensen, C. Segura, M. Zimmer, A. N. Price, K. L. Jaeger, L. Li, D. T. Mahoney, F. Cheng, C. N. Jones, C. Kelleher, R. Sando, C. R. Lane, A. Ward   +17 more
wiley   +1 more source