|
| C. D. Johnson Lumber Company (1) | C.D. Johnson Lumber Company (1) | C13 (3) |
| cabezon = Scorpaenichthys marmoratus (3) | cabezon=Scorpaenichthys marmoratus (2) | Cabin Creek (2) |
| Cabrillo Formation (1) | cadmium (21) | cadmium data (2) |
| Calapooia River (1) | Calapooya (1) | Calapooya Creek (51) |
| Calapooya formation (2) | calcium (3) | calcium carbonate (9) |
| calcium carbonate, (1) | Calf Creek (8) | Caliente Formation (1) |
| California (356) | California bay shrimp = Crangon franciscorum (1) | California bay shrimp=Crangon franciscorum (5) |
| California brown pelican = Pelecanus occidentalis californicus (1) | California condor = Gymnogyps californianus (1) | California Current (3) |
| California Current Ecosystem (1) | California datemussel=Adula californiensis (3) | California giant salamander = Dicamptodon ensatus (1) |
| California gull = Larus californicus (3) | California gull=Larus californicus (1) | California halibut = Paralichthys californicus (1) |
| California mussel = Mytilus californianus (15) | California mussel = Mytilus californianus. Piddock clam = Penitella penita (1) | California mussel = Mytilus californicus (1) |
| California mussel = Mytilus californicus. Piddock clam = Penitella penita, Red abalone = Haliotis rufescens, Seaside, Cape Falcon, Nehalem Bay, Tillamook Bay, Cape Meares, Netarts Bay, Cape Lookout, Nestucca Bay, Cascade Head, Depoe Bay, Lincoln Beach, (1) | California mussel=Mytilus californianus (11) | California sardine = Sardinops sagax (4) |
| California sea lion = Zalophus californianus (14) | California sea lion = Zalophus californianus. catch statistics (1) | California sea lion=Zalophus californianus (3) |
| California softshell clam = Cryptomya californica (5) | California softshell=Cryptomya californica (4) | California tonguefish=Symphurus africauda (1) |
| Calkins Creek (1) | Callahan Creek (4) | Callahan Creek (Siletz) (1) |
| Callow Creek (1) | Calumet Lake (1) | Camas Valley/Tenmile (1) |
| Cambarincola gracilis (1) | Camp Creek (13) | Camp Creek (Umpqua) (1) |
| Camp Twelve (1) | Camp Westwiind (1) | Camp Westwind (1) |
| Campbell Falls (1) | Campbell Park (1) | Canada (32) |
| Canada goose=Branta canadensis (2) | Canal Creek (10) | Canary Road (3) |
| Canary rockfish = Sebastes pinniger (1) | canary rockfish=Sebastes pinniger (1) | canneries (55) |
| canneries, commercial fisheries – salmon, depleted populations, economics, environmental law and policy, general, hatcheries, historical, Pacific salmon = Oncorhynchus spp., statistics, theses (1) | canneries, commercial fisheries, industrial development, Reedsport (Or.), Shad = Alosa sapidissima. Umpqua River (1) | canneries, commercial fisheries, industrial development, Shad = Alosa sapidissima. Umpqua River (1) |
| Cannery Slough (1) | Cannibal Mountain (2) | Cannon Beach (4) |
| Cannon Beach (Or.) (3) | Canton Creek (19) | Canyon Creek (15) |
| Canyon Quarry Park (1) | Canyons (9) | Canyonville (2) |
| Canyonville South Umpqua (1) | Cape Arago (10) | Cape Blanco (7) |
| Cape Blanco Lighthouse (1) | Cape Creek (2) | Cape Creek (Lane) (1) |
| Cape Creek (Lincoln County) (1) | Cape Creek Bridge (1) | Cape Falcon (3) |
| Cape Ferrelo (1) | Cape Foulweather (13) | Cape Foulweather Basalt (1) |
| Cape Horn Creek (3) | Cape Kiwanda (3) | Cape Lookoout (2) |
| Cape Lookout (8) | Cape Lookout Sand Spit (5) | Cape Lookout State Park (25) |
| Cape Meares (8) | Cape Meares, Fogarty Creek, Boiler Bay, Seal Rock, Yachats Beach, Strawberry Hill, Tokatee Klootchman, Cape Arago, Cape Blanco, Port Orford Head, Rocky Point, Ochre sea star = Pisaster ochraceus, California mussel = Mytilus californianus, community ecol (1) | Cape Mendicino (Ca.) (1) |
| Cape Perpetua (19) | Cape Sebastian (1) | Capitellidae (polychaeta) (2) |
| carbaryl (1) | carbon (59) | carbon cycle (1) |
| carbon dioxide (15) | carbon monoxide (1) | Carbon sequestration (2) |
| carbonate (1) | carbonates (5) | carbonic acid (5) |
| Carnation Creek (1) | Carolinefjellet Formation (1) | Carson Creek (1) |
| Carter Creek (1) | Carter Lake (1) | Cascade Creek (3) |
| Cascade Creek (Alsea) (2) | Cascade Head (55) | Cascade Head Basalt (3) |
| Cascade Head National Scenic And Research Area (1) | Cascade Head, California sea lion = Zalophus californianus, migration, geographical distribution, reproductive behavior (1) | Cascade Head, depleted populations, ecological values, environmental policy and law, general, general ecosystem description, habitat conservation, land use, McCaffery Slough (Yaquina), methodology, natural resource management, Netarts Bay, Netarts Spit, (1) |
| Cascade Head, Douglas-fir = Pseudotsuga menziesii, Western hemlock = Tsuga heterophylla, Phaeocryptopus gaeumanniii, fungus, terrestrial vegetation, climate change, ecosystem health (1) | Cascade Head, Rogue Reef, Orford Reef, (1) | Cascade Head, Salmon River estuary, aesthetics, environmental law and policy, human impacts, natural resource management (1) |
| Cascade Head, Salmon River, Lincoln City (Or.), Siletz Spit, Siletz Bay, Siletz River, Fogarty Creek, Government Point, beach processes, coastal hazards, erosion, geography, geology, human impacts, sea levels, sediment data, wave height, theses (1) | Cascade Head, Salmon River, Lincoln City (Or.), Siletz Spit, Siletz Bay, Siletz River, Fogarty Creek, Government Point, coastal hazards, environmental law and policy, erosion, geography, geology, human impacts, land use, theses (1) | Cascade Head, Salmon River, Siletz River, Umpqua River Estuary, Harbor seal = Phoca vitulina, California sea lion = Zalophus californianus, Steller sea lion = Eumetopias jubata, feeding behavior, predation, aquatic mammals, statistical analysis (1) |
| Cascade Range (7) | Cascadia (1) | Case Knife Creek (3) |
| Caspian tern = Hydroprogne caspia (1) | caspian tern=Sterna caspia (4) | Castle Rock Creek (1) |
| Castle Rock Fork (2) | catch data (2) | catch statistics (275) |
| Catching Creek (2) | Catching Slough (Coos) (1) | catfish = Ameirus nebulosus (1) |
| Cathedral Cliffs Formation (1) | Catostomus humboldtianus (3) | Cattail=Typha latifolia (1) |
| Cattle Creek (1) | Cavitt Creek (17) | Cedar Creek (38) |
| Cedar Creek (Siletz) (4) | Cedar Gulch Creek (1) | Cenozoic (182) |
| Center Slough (5) | Central County East (1) | Central County West (1) |
| Central Line Creek (1) | cephalopods (5) | Ceratomyxa Shasta (1) |
| Ceratomyxa shasta (3) | Cerine Creek (2) | cesium (3) |
| cetaceans (1) | Chaetoceros species (1) | Chain tunicate = Botrylloides violaceus (1) |
| Champagne Creek (3) | Channel Marker 31 (1) | Channel Marker 8 (1) |
| channels (1) | Charleston (OR.) (5) | Charleston Bridge (1) |
| Charleston Flat (5) | Charleston Triangle (5) | Charlie Riffle (1) |
| Charlotte Creek (4) | checkered littorine=Littorina scutulata (1) | Cheery Creek (5 Rivers) (1) |
| Chehalis River (3) | chemical (164) | chemicals (1) |
| chemistry (24) | Cherry Creek (3) | Cherry Creek (Alsea) (1) |
| Chesapeake Bay (2) | Chetco (1) | Chetco Cove (1) |
| Chetco Point (1) | Chetco River (78) | Chetco River estuary (139) |
| Chetco Riverr estuary (2) | Chickenclaws = Sarcocornia perennis (3) | Chico formation (1) |
| Chilcoot Creek (1) | Chilcote Creek (1) | Chile (3) |
| China (4) | China Creek (1) | China rockfish = Sebastes nebulosus (1) |
| Chinle formation (1) | Chinook almon = Oncorhynchus tshawytscha (11) | Chinook Bend (4) |
| Chinook Coho salmon = Oncorhynchus kisutch (1) | Chinook salmon = Onchorynchus tshawytscha (1) | Chinook salmon = Oncorhynchus tshawtscha (1) |
| Chinook salmon = Oncorhynchus tshawytscha (359) | Chinook salmon = Oncorhynchus tshawytscha' (3) | Chinook salmon = Oncorhynchus tshawytscha. Coho salmon = Oncorhynchus kisutch. hatcheries (1) |
| chinook salmon=Oncorhynchus tshawytscha (114) | chitin (3) | Chitwood (7) |
| Chitwood (Or.) (1) | chlorid (1) | chloride (4) |
| chlorine (8) | chlorophyll (1) | chromium (6) |
| Chronology (1) | Chrysaora fuscescens (1) | Chuckanut Formation (2) |
| chum salmon = Oncorhynchus keta (96) | chum salmon = Oncorhynchus keta (44) | chum salmon=Oncorhynchus keta (65) |
| Church Barn (1) | Church Creek (2) | ciliates (1) |
| circadian clock (1) | City Creek (4) | Clackamas River (1) |
| Cladophora amphibia (1) | Cladophora spp. = green algae (1) | Clallam formation (3) |
| Clam Island (5) | clams (10) | Clarno Formation (3) |
| Clatsop County (1) | Clatsop Plains (2) | Clatsop Spit (1) |
| Clay (2) | Clay Creek (5) | Clear Creek (2) |
| Clear Creek (Kilchis) (2) | Clear Lake (6) | Clear Water River (1) |
| Clearwater 1 (1) | Clearwater 2 (1) | Clearwater Dam (1) |
| Clearwater River (9) | Clearwater River. Coho salmon = Oncorhynchus kisutch (1) | Cleawox Lake (1) |
| Clegham Creek (1) | Cleowox Lake (1) | Cleveland Rapids (1) |
| climate (232) | climate change (40) | climate data (1) |
| climate precipitation (2) | climate, habitats, human impacts, salinity, sea level, wetland vegetation, wetlands, remote sensing, mathematical modeling (1) | Clinopyroxenes (1) |
| Clostridium botulinum (1) | Clouded salamander = Aneides ferreus, Umpqua River Basin, Smith River, Smith River Falls, South Fork Coquille River, Pistol River Basin, amphibians, morphology, genetics, evolution, geographic distribution, theses (1) | Clover Creek (6) |
| Clover Creek (North Umpqua River) (4) | cnidarian (1) | cnidarians (11) |
| Coal (33) | Coal Creek (4) | Coal Creek (Nehalem River) (1) |
| Coaledo Formation (2) | Coast Guard Jetty (1) | Coast Guard Station (16) |
| Coast Oyster Company. (2) | Coast Reservation of Oregon (1) | Coastal cutthroat trout = Oncorhynchus clarki clarki (10) |
| coastal cutthroat trout = Oncorhynchus clarkii clarkii (4) | coastal cutthroat trout= Oncorhynchus clarki clarki (5) | coastal cutthroat trout=Oncorhynchus clarki clarki (10) |
| coastal dunes (28) | Coastal giant salamander = Dicamptodon tenebrosus (6) | Coastal giant salamander = Dicamptodon tenebrosus,Northwestern salamander = Ambystoma gracile,Rough-skinned newt = Taricha granulosa,Foothill yellow-legged frog = Rana boylii,Coastal tailed frog = Ascaphus truei,Red-legged frog = Rana aurora,American bu (1) |
| coastal hazards (288) | coastal hazards, earthquakes, tsunamis, engineering, environmental law and policy, Bay City (Or.), Newport (Or.), Waldport (Or.), Yachats (Or.), North Bend (Or.) (1) | coastal hazards, earthquakes, tsunamis, introduced species, algae, taxonomy, morphology, species list (1) |
| Coastal hazards, earthquakes, tsunamis, mathematical modeling, bridges (1) | Coastal hazards, flooding, maps, Salmon River estuary, Netarts Bay, Siletz River, Depoe Bay, Yaquina River, Alsea River, Beaver Creek, Yachats River, Siuslaw River, Umpqua River (1) | coastal hazards, precipitation, erosion, geology, landslides, paleosciences, sediments, Umpqua River, Charlotte Creek, Mill Creek (1) |
| coastal hazards. Precipitation (1) | Coastal Indian Reservation (1) | Coastal Oregon Productivity Enhancement (COPE) (1) |
| coastal plants (1) | coastal processes (17) | Coastal tailed frog = Ascaphus truei (4) |
| coastal upwelling (23) | coastal zone management (1) | coastrange sculpin=Cottus aleuticus (1) |
| Cobble Creek (1) | Coccoliths (5) | Cocconeis placentula (1) |
| Cockle clam = Clinocardium nuttallii (121) | Cockle clam = Clinocardium nuttallii (Cardium corbis) (9) | cockle clam= Clinocardium nuttallii (1) |
| cockle clam=Clinocardium nuttallii (20) | Coffee Creek (5) | Coffee Creek (Rogue) (1) |
| Coffin Creek (1) | Coho salmon = Oncorhynchus kisutch (182) | Coho salmon = Oncorhynchus kisutch. steelhead trout = Oncorhynchus mykiss (1) |
| Coho salmon = Oncorhynchus kisutch (310) | Coho salmon = Oncorhynchus kisutch, Nehalem River, Nestucca River, Tillamook Bay, Nestucca River, Salmon River, Siletz River, Yaquina River, Beaver Creek, Alsea River, Siuslaw River, Coos River, Coquille River, Umpqua River, environmental law and policy (2) | Coho salmon = Oncorhynchus kisutch. Chinook salmon = Oncorhynchus tshawytscha (1) |
| Coho salmon = Oncorhynchus kisutch. reintroductions (1) | Coho salmon = Oncorhynchus kitsutch (9) | Coho salmon= Oncorhynchus kisutch (1) |
| coho salmon=Oncorhynchus kisutch (146) | Cole Rivers Fish Hatchery (1) | Coleman Creek (Alsea) (1) |
| Collins Creek (1) | Colombia (3) | Colorado (5) |
| Colorado pikeminnow = Ptychocheilus lucius (1) | Columbia River (64) | Columbia River basalts (1) |
| Columbia River Basin (3) | Columbia River estuary (173) | Columbia River Gorge (1) |
| Columbia River signal crayfish = Pacifastacus leniusculus trowbridgii (1) | Columbia River, Necanicum River, Ecola Creek (1) | Columbia River, Nehalem River, Tillamook Bay, Siletz River, Yaquina Bay, Alsea Bay, Siuslaw River, Umpqua River, Coos Bay, Rogue River, Chinook salmon = Oncorhynchus tshawytscha, Coho salmon = Oncorhynchus kisutch, Chum salmon = Oncorhynchus keta, Stee (1) |
| Columbia River, Nehalem River, Tillamook Bay, Siletz River, Yaquina Bay, Oysterville, Alsea Bay, Siuslaw River, Umpqua River, Coos Bay, Coquille River, Rogue River, Chinook salmon = Oncorhynchus tshawytscha, Coho salmon = Oncorhynchus kisutch, Pacific s (1) | Columbia River, Nestucca River, Salmon River, Yaquina River, Alsea River, Siuslaw River, Coquille River, salt marsh, insects, wetland restoration, population biology, human impacts, land use (1) | Columbia River, Port of Hammond, Tillamook Bay, Port of Garibaldi, Depoe Bay, Yaquina Bay, Port of Newport, Umpqua River estuary, Winchester Bay, Rogue River estuary, Port of Gold Beach, Coquille River, Port of Bandon, Nehalem River, Wilson River, Silet (1) |
| Columbia River, Rogue River, (1) | Columbia River, Tillamook Bay, Netarts Bay, Alsea River, Umpqua River, Coos Bay, Rogue River, Salish Sea, Puget Sound, Oregon coast, Washington coast, Harbor seal = Phoca vitulina, Pacific herring = Clupea pallasii, Pacific hake (whiting) = Merluccius (1) | Columbia River, Tillamook Bay, Siletz Bay, Yaquina Bay, Coos Bay, Hatfield Marine Science Center, Harbor seal = Phoca vitulina, Steller sea lion = Eumetopias jubata, California sea lion = Zalophus californianus, commercial fisheries, human impacts (1) |
| Columiba River (1) | Columnar joints (1) | Comer Branch (1) |
| comercial fisheries (1) | Comley Creek (1) | commerce (3) |
| commercial fisheries (170) | commercial fisheries - groundfish (11) | commercial fisheries - salmon (107) |
| commercial fisheries - salmonChinook salmon = Oncorhynchus tshawytscha (1) | commercial fisheries - salmonids (3) | commercial fisheries - shellfish (217) |
| commercial fisheries -- groundfish (2) | commercial fisheries – groundfish (7) | commercial fisheries – salmon (64) |
| commercial fisheries – salmonids (1) | commercial fisheries – shellfish (12) | Commercial fisheries, demographics, economics, sustainability, natural resource management, environmental law and policy, Brookings (Or.), Gold Beach (Or.), Port Orford (Or.), Bandon (Or.), Charleston (Or.), Winchester Bay (Or.), Reedsport (Or.), (1) |
| commercial fisheries-salmon (1) | commercial fisheries-shellfish (24) | commercial fishing (2) |
| Common garter snake = Thamnophis sirtalis (1) | Common loon = Gavia immer (2) | common loon=Gavia immer (1) |
| Common merganser = Mergus merganser (1) | common murre = Uria aalge (7) | common murre=Uria aalge (4) |
| Common raven = Corvus corax (1) | common tern=Sterna hirundo (1) | Common yarrow = Achillea millefolium (2) |
| community (3) | community composition (1) | community ecology (115) |
| composition (1) | computer modeling (1) | computer programs (15) |
| comunication (1) | conductivity (1) | Confederated Tribes of the Coos, Lower Umpqua and Siuslaw Indians (1) |
| Confederated Tribes of the Siletz Indians (1) | Connecticut (1) | Conser (3) |
| conservation (7) | conservation plan (6) | conservation plans (1) |
| contamination (1) | Continental drift (1) | Continental margin (133) |
| continental shelf (68) | Continental slope (27) | Contracoecum spp. (1) |
| Convergence (4) | Cook Creek (2) | Coon Creek (17) |
| Coon Lake (Salmon River) (1) | Cooper Creek (4) | Cooper Creek Reservoir (4) |
| Coos (1) | Coos basin (1) | Coos Bay (501) |
| Coos Bay (Or.) (2) | Coos Bay Bridge (1) | Coos Bay estuary (16) |
| Coos Bay Sandspit (1) | Coos Bay, Coquille River, Nehalem River, Nestucca River, (1) | Coos Bay, Coquille River, Nehalem River, Nestucca River, Rogue River (1) |
| Coos Bay, Coquille River, Nehalem River, Nestucca River, Rogue River, (1) | Coos Bay, Netarts Bay, Yaquina Bay, Idaho Flats, Sally’s Bend, algae, eelgrass = Zostera marina, eelgrass sea hare = Phyllaplysia taylori, community ecology, upwelling, herbivores, predation, natural resource management, theses (1) | Coos Bay, Siletz Bay, Nisqually (Wa.), Tufted harigrass = Deschampsia cespitosa, Saltgrass = Distichlis spicate, Pacific pickleweed = Salicornia pacifica, wetland vegetation, climate, sea levels (1) |
| Coos Bay. Gaper clam = Tresus capax (2) | Coos Rive (1) | Coos River (91) |
| Coos River Basin (4) | Coos River estuary (251) | Copeland Creek (12) |
| copepods (25) | copper (23) | Copper Creek (3) |
| Copper rockfish = Sebastes caurinus (5) | Copperhead Creek (1) | Coquille (1) |
| Coquille Bay (53) | Coquille Beach (1) | Coquille Formation (3) |
| Coquille Point (63) | Coquille River (262) | Coquille River Basin (4) |
| Coquille River estuary (240) | Coquille River estuary, Rogue River (1) | Coquille River Spit (1) |
| Corbicula spp. (1) | Corkscrew rush=Juncus effuses (1) | cormorants (Phalacocorax spp.) (1) |
| Corn Creek (2) | Corophium brevis (1) | Corophium salmonis (2) |
| Corophium species (6) | Corophium spinicorne (1) | Corral Creek (1) |
| Cougar Creek (10) | Cougar Mountain (2) | Council Creek (1) |
| Courtenay River estuary (1) | Cove Point (1) | Cow Creek (60) |
| Cow Creek Band of the Umpqua Tribe (2) | Cow Creekm Alsea River (1) | Cowischan River estuary (1) |
| Cowlitz Formation (6) | Cowlitz River (1) | Cox Creek (1) |
| Cox Island (1) | Coyote Creek (4) | Coyote Rock (5) |
| crabs (3) | Crack-in-the-Ground (1) | Craigie Point (14) |
| Crane Creek (16) | Crassostrea gigas = Pacific oyster (5) | crawdads (1) |
| crayfish = Pacifastacus spp. (1) | Crayfish Lake (1) | Crazy Creek (1) |
| Creeping bentgrass = Agrostis stolonifera (2) | Creeping Vole = Microtus oregoni (1) | creosote (1) |
| Crescent City (Ca.) (1) | Crescent City (Cal.) (1) | Crescent formation (9) |
| Cretaceous (111) | Criter’s Moorage (1) | Criteser's Marina (21) |
| Criteser's Moorage (5) | Criteser’s Moorage (4) | Cronin Point (1) |
| Crooked (Spencer) Creek (1) | Crooked Creek (4) | Crooked River (1) |
| Crow's Rapid (1) | Crowley Creek (4) | Crowley Creek, dike removal, diking, marsh restoration, Pixieland, Rowdy Creek, Salmon River Estuary, Tamara Quays, tide gates, salt marsh, wetland restoration (1) |
| Crown Zellarbach Creek (1) | Crown Zellerbach (1) | Crust (175) |
| crustacea (2) | crustaceans (203) | Crustal structure (16) |
| ctenophores (2) | cultural (2) | Cultus Creek (1) |
| Cultus Lake (1) | culverts (2) | cumaceans (1) |
| Cumella vulgaris (1) | Cummins Creek (5) | Curl Creek (1) |
| curly-leaf pondweed = Potamogeton crispus (1) | Curry County (Or.) (1) | Cushman (Or.) (2) |
| Cushman Slough (Siuslaw) (1) | Cutler City (12) | Cutler City (Lincoln City) (2) |
| Cutler City (Or.) (1) | cutthroat trout = Oncorhynchus clarki (186) | Cutthroat trout = Oncorhynchus clarki clarki (2) |
| cutthroat trout = Oncorhynchus clarki, diet, fishes, geographic distribution, growth, habitats, Hinkle Creek, logging, North Fork Hinkle Creek, sediments, South Fork Hinkle Creek, Umpqua River, (1) | Cutthroat trout= Oncorhynchus clarki (1) | Cutthroat trout=Oncorhynchus clarki (3) |
| Cuttus Creek (1) | cyanide (4) | Cytophaga psychrophila (2) |
| Cytophaga psychrophilia (1) | Cytophaga spp. (2) | |
