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The period 7,500 to 5,000 years B.P.
- Browse Related Terms: Aftershocks, discharge, Early Archaic, extremely low frequency (ELF), Historic, Impingement, Late Archaic, Prehistoric, savanna, Sedentism, Seismic swarm, Swarm (seismic swarm), Thorn forest, Wind rose
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A watering area or basin for cattle that is usually created in a natural drainage area by obstructing natural water flows with berms of soil.
- Browse Related Terms: Basin-fill aquifer, Bolson (floor), Closed Basin, compact, Depletion, Earthern cattle tank, Groundwater basin, Gypsum, Infiltration pond, Interbasin flow, Interbasin transfer of water, Interbasin transfers, Overdraft, Perennial yield (groundwater), reservoir, Safe yield, Sustainable yield
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Ground shaking caused by the sudden release of energy stored in rock beneath the Earth's surface.
- Browse Related Terms: Acceleration (peak horizontal), Direct Normal Insolation (DNI), Earthquake, Excessive grades, Ground motion (shaking), Peak horizontal acceleration, Planetary boundary layer turbulence structure, Slope stability, Steep slopes, stolon, Surface water, Tsunami
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Biota (fish, wildlife, and plants) and their habitats, which may be land, air, or water.
- Browse Related Terms: Carrying Capacity, Compensation, Desert focal bird species, Ecological resources, Endangered Species Act of 1973 (ESA), fragmentation, Fragmentation of habitat, Habitat degradation, Obligate species, Riparian obligate species, Sand dune obligate species, Shrub-steppe, Shrubsteppe obligate, Snag, steppe, Wildlife corridor, Xeric (habitat)
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Development that fragments animal habitat and does not provide corridors for movement.
- Browse Related Terms: Corridor-transmission, Corridor-wildlife, Ecological segmentation, Flyway, Migration corridor, Neotropical migrants, Passerine, Prey base, RAPTOR
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A geographically distinct area of land that is characterized by a distinctive climate, ecological features, and plant and animal communities.
- Browse Related Terms: Appropriate Management Level (AML), Aquaculture, Aquatic biota, Aquatic ecosystem, Biogenic source (emissions), Biota, Browse, Bryozoan, Burrow, cavity, Collection, Community, Crustaceans, Ecoregion, Fauna, Habitat, Harassment, Invertebrate, Montane, NatureServe Explorer, Plankton (planktonic), Terrestrial, Wetlands, Zoomorphic
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A group of organisms and their physical environments, interacting as an ecological unit.
- Browse Related Terms: Abiotic, Anthropogenic emissions, Demand-side management, Direct effects, Ecosystem, Effects, Full-time equivalent (FTE), Indirect effects, NatureServe, Noise criteria, Reclamation, Stressors
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The borders between two different types of ecosystems or communities (e.g., a forest and a grassland) containing characteristic species of each.
- Browse Related Terms: Aquatic opportunists, Big game, Ecotones, Extirpation, Facultative wetland vegetation species, Fire-tolerant species, Flats wetland, Habitat alteration, Invasive species, Lek, Megafauna, Nongame species, Scarify, Species of Special Concern, Translocation
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The transitional zone where one cover type ends and another begins.
- Browse Related Terms: Alquist-Priolo Earthquake Fault Zoning Act, Creep (rate), Edge habitat, fault, Fault block, Fault plane, Fault trace, Fault, left-lateral, Fault, potentially active, Fault, right-lateral, Fault, transform, Fault, zoned, Half-graben, Left-lateral fault, Potentially Active Fault, Right-lateral fault, SLIP, Strike-slip fault, Surface expression, Surface rupture, Transform fault, Unfaulted, Zoned fault
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A descriptor for the appearance of solar facility collector/reflector arrays when viewed at very low vertical angles, such that the viewing angle is at or very close to horizontal.
- Browse Related Terms: Collector, Conditional Use Permit (CUP), Design basis, Edge-on, Flat-plate reflector (heliostat), Fresnel lens, Heliostat, Mirror, Molten salts, Receiver, Reflector, Solar collector, Solar collector array, Solar energy technology, Solar Energy Zone (SEZ), Solar tracking, specular reflection, Thermal inertia, Tracking array
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Environmental consequences (the scientific and analytical basis for comparison of alternatives) as a result of a proposed action. Effects may be either direct, which are caused by the action and occur at the same time and place, or indirect, which are caused by the action and are later in time or farther removed in distance but are still reasonably foreseeable, or cumulative.
- Browse Related Terms: Abiotic, Anthropogenic emissions, Demand-side management, Direct effects, Ecosystem, Effects, Full-time equivalent (FTE), Indirect effects, NatureServe, Noise criteria, Reclamation, Stressors
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Ratio of "power out" divided by "power in." The definitions of power out and power in are specific to a given technology and depend on whether the efficiency value describes a total system efficiency or an individual component's efficiency.
- Browse Related Terms: Efficiency, Geothermal energy, insolation, Kilowatt, Megawatt, Megawatt electrical (MWe), Power tower system, Power, electrical, Solar energy, Solar power tower, Watt (W)
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An object bearing the likeness of an animal or human.
- Browse Related Terms: Air pollutant, Animal unit, Animal Unit Month (AUM), Anthropomorphism, Consumptive use, Effigy, forage, Furbearer, Grazing, Hunter gatherers, Livestock watering area, Mammals
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Wastewater discharges.
- Browse Related Terms: Clean Water Act (CWA), Effluent, Emissions, Hazardous material, Heavy metals, Off-road vehicle, Photosynthesis, Plume, Secondary containment, Wastewater
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Electric and magnetic fields are generated when charged particles (e.g., electrons) are accelerated. Charged particles in motion produce magnetic fields. Electric and magnetic fields are typically generated by alternating current in electrical conductors. Also referred to as electromagnetic fields.
- Browse Related Terms: Battery capacity, Corona discharge, Deep-cycle battery, Electric and magnetic field (EMF), Electron, Grid, Ground fault mats, Low-level magnetic fields, Transmission line
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A nonmetallic (liquid or solid) conductor that carries current by the movement of ions (instead of electrons) with the liberation of matter at the electrodes of an electrochemical cell.
- Browse Related Terms: AC, Alternating current (AC), Battery, Build-out capacity, Cadmium (Cd), DC, Direct current (DC), DNI, Electrolytes (battery), Gallium (Ga), Inverter, Irradiance, Photovoltaic (PV) cell, Power conditioning system (PCS)
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A subatomic particle with a negative electric charge. Electrons form part of an atom and move around its nucleus.
- Browse Related Terms: Battery capacity, Corona discharge, Deep-cycle battery, Electric and magnetic field (EMF), Electron, Grid, Ground fault mats, Low-level magnetic fields, Transmission line
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- See Historic properties
- Browse Related Terms: Archaeological site, artifact, Eligible properties, Historic properties, Multiple use, National Historic Trails, National Landscape Conservation System (NLCS), National Recreation Area, Patterned-body anthropomorphs, Peanut-body anthropomorphs, Seismicity, Special areas, State Historic Preservation Officer (SHPO), Wilderness characteristics
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Adverse effects on the embryo due to a substance that enters the maternal system and crosses the placental barrier. The effects of the substance may be expressed as embryonic death or an abnormal development of one or more body systems and can be deleterious to maternal health.
- Browse Related Terms: Air quality, Air Quality Standards, Ambient Air Quality Standards, California Ambient Air Quality Standard (CAAQS), Embryotoxicity, Hazardous air pollutant (HAP), Maximum contaminant level (MCL), National Ambient Air Quality Standards (NAAQS), National Pollutant Discharge Elimination System (NPDES), Occupational Safety and Health Administration (OSHA), OSHA, receptor
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Aquatic plants having some or most of the leaf area extending out of the water.
- Browse Related Terms: Conifer, Deciduous, Emergent, Emergent wetlands, Flora, Forbs, Graminoid herbaceous, Herbaceous, Macrophyte (aquatic), Marsh, Mosses, Noxious weeds, Nurse plants, Palustrine wetlands, Pesticide, Phytoplankton, Sedge, Shrub, Weed