Filters: Tags: Oregon (X)21 results (124ms)
Album caption: Scenes along the highway between The Dalles, Oregon and Northern California near Klamath Falls, Oregon. No index card.
Album caption: Plane-table station on a prominent summit west of Bridge Creek. No index card.
Album caption: Multonomah Falls on the Columbia River Highway near Portland. Total fall 620 feet. No index card.
Album caption: Bear Creek Valley in late afternoon. No index card.
Album caption: Collins Elkins preparing breakfast while on a spike camp on the headwaters of Cherry Creek. No index card.
Album caption: Red rocks in Hell's Half acre near the headwaters of Cherry Creek. No index card.
This map depicts the density of "More Resilient" cells (defined as the top two quintiles from the stratified resilience dataset) within a 3-km radius of every cell. This provides important additional context when making land protection or restoration decisions. Cells with higher density values are embedded in a larger resilient landscape. These areas are more likely to support biodiversity and ecological function over time in a changing climate. To quantify resilience at the landscape scale, we used a density function, where all cells classified in the final top two resilience quintiles were included in the density calculations, regardless of their underlying Ecofacet, and all other cells were ignored. Looking...
Album caption: Black Butte, elevation 5027, and White Butte, elevation 5640, as seen from a point on the Ochoco Road west of Mitchell. No index card.
Album caption: Looking north from a point two miles west of Mitchell along the Ochoco-Dayville Road. Sutton Mountain in the background. No index card.
This project will provide a comprehensive synthesis of beaver recolonization science and techniques for successful reintroduction or population expansion through a thorough, in-depth, coordinated review of all North American beaver-related information, including identification of research gaps and data needs, and recommendations for project implementation. This information will be disseminated through a series of one-day workshops.
Album caption: Spherulite-bearing ash flow at the base of member F of the John Day Formation, exposed in the open pit of the Priday agate deposite. Chalcedony-filled spherulites (thunder-eggs) occur near the base of the ash flow. The excavation in shadow near the bottom of the photograph was dug in recovering the sperulites. Jerfferson County, Oregon. n.d. Published as figure 8 in U.S. Geological Survey.Bulletin 1161-D. 1964. Index Card: No index card.
Album caption: Looking east from Wagner triangulation station. Elevation 3326. John Day River is in the lower right corner. No index card.
Album caption: The white objects in the lower center are the tents of the Geological Survey camp at the Taylor Ranch on Bridge Creek flats. No index card.
Album caption: Sand Spring Butte below Burnt Ranch. No index card.
Album caption: Collin Elkins on Baldy. No index card available.
Album caption: Photomicrograph of a soda sanidine crystal partly rimmed by myrmekitic intergrowths of quartz and sanidine; the crystal is a devitrified rhyolite welded ash-flow sheet of the John Day Formation (member G) near Willowdale, Oregon. Jefferson County, Oregon. n.d. Published as figure 4 in U.S. Geoloical Survey. Bulletin 1161-D. 1964. Index card: No index card.
Album caption: Fossil beds on the northwest slope of Sutton Mountain. No index card available.
Album caption: Looking across Bridge Creek Valley. Sutton Mountain, elevation 3900 id in the upper right. No index card.
Album caption: Geological Survey camp on the John Day River. July 15. At Burnt Ranch. No index card.
The vulnerability of Pacific Lamprey to climate change will be evaluated by using an approach that relies on existing climate change model projections for stream conditions (i.e. hydrograph, temperatures, winter flood events) and lamprey sensitivity to environmental changes due to climate change.