|
| Pacifastacus gambelii (1) | Pacific (1) | Pacific brook lamprey = Lampetra pacifica (1) |
| Pacific City (Or.) (12) | Pacific Coast (2) | Pacific cod = Gadus macrocephalus (1) |
| Pacific Decadal Oscillation (11) | Pacific dulse = Palmaria mollis (1) | Pacific falsejingle = Pododesmus cepio (4) |
| Pacific fisher = Martes pennant pacifica (1) | Pacific gaper clam = Tresus nuttallii (7) | Pacific gaper=Tresus nuttallii (1) |
| Pacific hake (whiting) = Merluccius productus (2) | Pacific hake = Merluccius productus (1) | Pacific halibut = Hippoglossus stenolepis (8) |
| Pacific herring = Clupea pallasi (34) | Pacific herring = Clupea pallasii (3) | Pacific herring = Clupea pallasi (2) |
| Pacific herring = Clupea pallasii (1) | Pacific herring=Clupea pallasi (14) | Pacific jumping mouse = Zaphus trinotatus (2) |
| Pacific lamprey = Entosphenus tridentatus (1) | Pacific lamprey = Entosphenus tridentatus (Lampetra tridentata) (47) | Pacific lamprey = Entosphenus tridentatus (Lampetra tridentata) River lamprey = Lampetra ayresi. Rock Creek (1) |
| Pacific lamprey = Entosphenus tridentatus (Lampetra tridentata) Western brook lamprey = Lampetra richardsoni (1) | Pacific lamprey = Lampetra tridentata (6) | Pacific lamprey=Entosphenus tridentatus (Lampetra tridentata) (3) |
| Pacific lamprey=Lampetra tridentata (4) | Pacific lampreys = Lampetra spp. (1) | Pacific littleneck = Leukoma staminea (1) |
| Pacific littleneck = Protothaca staminea (1) | Pacific littleneck=Leukoma staminea (22) | Pacific loon = Gavia pacifica (1) |
| Pacific lugworm = Abarenicola pacifica (2) | Pacific marten = Martes caurina (Martes americana), depleted populations, geographical distribution, population count, species list, habitats, human impacts, Oregon Coast, Alsea River Basin, Umpqua River Basin (1) | Pacific marten = Martes caurina humboldtensis (1) |
| Pacific Northwest (8) | Pacific Ocean (2) | Pacific ocean perch=Sebastes alutus (1) |
| Pacific oyster =Crassostrea gigas (1) | Pacific oyster = Crassostrea gigas (96) | Pacific oyster = Crassostrea gigas, (1) |
| Pacific oyster = Crassostrea gigas, aquaculture, natural resource management, Alsea Oyster Company, Alsea Bay (1) | Pacific oyster=Crassostrea gigas (83) | Pacific razor clam = Siliqua patula (20) |
| Pacific razor clam=Siliqua patula (1) | Pacific razor=Siliqua patula (29) | Pacific rock crab = Romaleon antennarium (Cancer antennarius) (2) |
| Pacific sallmon = Oncorhynchus species (2) | Pacific salmon = Oncorhynchus spp. (2) | Pacific salmonid species (Oncorhynchus spp.) (2) |
| Pacific salmonid species = Oncorhynchus spp. (1) | Pacific salmonids = Oncorhynchus species (24) | Pacific salmonids = Oncorhynchus spp. (27) |
| Pacific salmonids = Oncorhynchus spp., Salmon River Hatchery, Alsea River Hatchery, North Fork Alsea River, Fall Creek, Oregon Hatchery Research Center, North Fork Umpqua River, Rock Creek Hatchery, hatcheries, genetics, environmental impact statement (2) | Pacific salmonids = Oncorhyncus species (1) | Pacific salmonids=Oncorhynchus species (138) |
| Pacific salmonids=Oncorhynchus spp (1) | Pacific salmonids=Oncorhynchus spp. (7) | Pacific sand lance = Ammodytes hexapterus (7) |
| Pacific sand lance=Ammodytes hexapterus (1) | Pacific sanddab = Citharichthys sordidus (1) | Pacific sea blenny = Lumpenus sagitta (1) |
| Pacific shrew = Sorex pacificus (2) | Pacific silverweed = Potentilla pacifica (1) | Pacific smelt = Thaleichthys pacificus (19) |
| Pacific smelt=Thaleichthys pacificus (1) | Pacific Spruce Corporation (1) | Pacific staghorn sculpin = Leptocottus armatus (18) |
| Pacific staghorn sculpin=Leptocottus armatus (13) | Pacific tomcod = Microgadus proximus (5) | Pacific tomcod=Microgadus proximus (1) |
| Pack Sack Lookout Basalt (1) | Packard Creek (1) | Packard Gulch (1) |
| Padded sculpin = Artedius fenestralis (3) | Padilla Bay (1) | Padilla Bay (Wash.) (1) |
| Page Road (Umpqua) (1) | Pakistan (1) | Paleocene (17) |
| paleoecology (2) | Paleogene (35) | Paleomagnetism (3) |
| paleontology (6) | paleosciences (159) | paleosciences, geology, sediments, methane (1) |
| Paleozoic (89) | Palmaria mollis (1) | Palmer Creek (1) |
| Palmrose (4) | Palmrose Site (1) | Pancho Rico Formation (1) |
| Pangaea (1) | Panther Creek (16) | Panther Creek (Salmon) (1) |
| Panther Creek (Smith River) (1) | Panther Creek (Umpqua) (1) | Papua New Guinea (1) |
| Par-Tee (4) | Par-Tee Site (1) | Paraclanus parvus (1) |
| Paradise cove (2) | Paradise Creek (3) | Paradise Creek (Umpqua River) (3) |
| paralytic shellfish poisoning (1) | Parapleustes species (2) | parasites (76) |
| Parasitic nematode = Ascarophis spp. (1) | Parker Slough (13) | Parrott Creek (3) |
| Partnership for the Umpqua Rivers (1) | Paskenta formation (1) | Paso Robles Formation (1) |
| Pass Creek (13) | Pat Larson Riffle (1) | Patterson Creek (5) |
| Peak Creek (1) | Peak Creek (Alsea) (1) | Peat (2) |
| Peavine Creek (1) | Pecten (1) | Pelagic cormorant = Phalacrocorax pelagicus (1) |
| pelagic cormorant=Phalacrocorax pelagicus (1) | Pennsylvania (4) | Penpoint gunnel = Apodichthys flavidus (3) |
| pentachlorophenol (1) | perceived threats to estuaries (1) | Peregrine falcon = Falco peregrinus (2) |
| peregrine falcon=Falco peregrinus (2) | Peromyscus maniculatus = deer mouse (1) | Peru (3) |
| pesticides (42) | petrale sole=Eopsetta jordani (1) | petrography (1) |
| petroleum (103) | pH (11) | pH data (25) |
| pH levels (1) | Phages (1) | Phanerozoic (2) |
| Pharmaceutical (1) | Pheasant Creek (1) | phenology (6) |
| phenols (2) | Philippines (15) | Phillips Creek (Alsea) (1) |
| phosphate (9) | phosphate data (1) | Phosphorite (1) |
| phosphorus (52) | photograph (13) | photographs (2) |
| photoperiod (1) | Phyllodoce williamsi (1) | Phyllospadix species (6) |
| phylogeny (1) | physical (363) | physical modification (44) |
| physical modifications (154) | physics (1) | physiology (202) |
| physiology, (1) | Phytoclasts (1) | phytoplankton (10) |
| Pickett Creek (1) | Pickleweed = Salicornia virginica (2) | piddock clam = Zirfaea pilsbryi (1) |
| Piddock clam = Penitella penita (4) | piddock clam =Zirfaea pilsbryi (1) | Piddock siphon = Pholadidea penita (7) |
| Pigeon guillemot = Cepphus Columba (2) | pigeon guillemot=Cephus columba (2) | Pigeon Point (8) |
| Pigeon Point Formation (1) | Pikes Camp (2) | pile perch = Rhacochilus vacca (2) |
| pile perch=Rhacochilus vacca (5) | pile surfperch =Rhacochilus vacca (1) | Pillow lava (13) |
| Pillow lavas (10) | Pilsbry piddock clam =Zirfaea pilsbryi (2) | Pinecrest (3) |
| Pink (humpback) salmon = Oncorhynchus gorbuscha (1) | Pink salmon (humpback) = Oncorhynchus gorbuscha (6) | Pink salmon (humpback) = Oncorhynchus gorbuscha, life history information, habitats, North American beaver = Castor Canadensis, agriculture, logging, dams, dredging, irrigation, mining, water pollution, water temperature, erosion, sediments, human impac (1) |
| pink salmon = Oncorhynchus gorbuscha (1) | pink salmon=Oncorhynchus gorbuscha (12) | Pink shrimp = Pandalas jordani (3) |
| pink shrimp = Pandalus jordani (7) | pink shrimp=Pandalus jordani (8) | pinnipeds (1) |
| Pioneer Quarry (1) | Pipestem Inlet (1) | Pipestone Creek (2) |
| Pistol River (13) | Pistol River estuary (3) | plankton (7) |
| planning (7) | Planothidium delicatulum (2) | plant species (5) |
| plant succession (4) | Plastic (1) | Plat I Reservoir (1) |
| Plate tectonics (83) | Platt I Reservoir (1) | platyhelminthes (7) |
| Pleistocene (107) | Pleistophora species (2) | Pleuronectes vetulus (1) |
| Pliocene (71) | Plusfour Creek (1) | Plutonic rocks (12) |
| Plutonism (5) | Podon species (1) | Poland (1) |
| Polk County (1) | Polloc Creek (2) | pollution (23) |
| polychaete worms (8) | Polychaetes (1) | polychlorinated biphenyls (14) |
| Polysiphonia species (2) | Pony Point (3) | Poole Creek (2) |
| Poole Slough (11) | Pooles Slough (16) | Poole’s Slouth (1) |
| population (2) | population biology (361) | population count (253) |
| population data (1) | population dynamics (1) | Porcelain crab = Pachycheles spp. (1) |
| porcelain crabs (1) | Porifera (1) | poriferans (1) |
| Porphyra abbottae (1) | Porphyra nereocystis (1) | Port of Alsea (11) |
| Port of Astoria (4) | Port of Bandon (8) | Port of Bay City (3) |
| Port of Brookings (7) | Port of Coos Bay (8) | Port of Coquille River (6) |
| Port of Depoe Bay (1) | Port of Florence (1) | Port of Garibaldi (13) |
| Port of Gold Beach (8) | Port of Hammond (1) | Port of Nehalem (6) |
| Port of Newport (36) | Port of Newport Dock 1 (6) | Port of Newport Dock 2 (1) |
| Port of Newport Dock 3 (5) | Port of Newport Dock 5 (7) | Port of Newport Dock 7 (6) |
| Port of Port Orford (1) | Port of Siuslaw (6) | Port of Tillamook Bay (7) |
| Port of Toledo (18) | Port of Umpqua (6) | Port of Umpqua Industrial Park (1) |
| Port of Waldport (1) | Port Orford (60) | Port Orford (Or.) (8) |
| Port Orford, Coquille River, Coos Bay, Umpqua River, Siuslaw River, Alsea River, Yaquina River, Nestucca River, Tillamook Bay, Columbia River, Scottsburg (Or.), navigation, ports, harbors, physical modification (1) | Porter Creek (2) | Porter Creek (Or.) (1) |
| Portland (Or.) (1) | Portland Harbor (1) | ports (57) |
| ports. Roseburg (Or.) (1) | potassium (3) | Potassium-argon (1) |
| Poul Creek Formation (1) | Powerdale Dam (1) | Powers (2) |
| Prairie Creek (2) | Preacher Creek (2) | precipitation (165) |
| precipitation data (25) | predation (28) | prehistory (3) |
| Prickly sculpin = Cottus asper (1) | prickly sculpin=Cottus asper (2) | primary production (35) |
| primary productivity (2) | Procambarus clarkii = red swamp crayfish (1) | Productivity (1) |
| Prong Creek (2) | Prosser Slough (Cushman Slough) (1) | Providence Creek (4) |
| Pseudocalanus minutus (1) | Pseudocalanus species (4) | Pseudodiaptomus inopinus (2) |
| Ptychocheilus grandis = Sacramento pikeminnow (1) | Public Fishing Pier (3) | Puerto Rico (1) |
| Puget Sound (4) | Puget Sound gumweed = Grindelia integrifoli (1) | pulp mill effluent (36) |
| Pumice glass (1) | Purdy Creek (1) | purple martin=Progne subis (2) |
| Purple olive shell = Olivella biplicata (1) | purple sea urchin = Strongylocentrotus purpuratus (2) | Purple shore crab = Hemigrapsus nudus (6) |
| Purple varnish clam = Nuttallia obscurata (4) | Pygmy rock crab = Glebocarcinus oregonensis (Cancer oregonensis) (2) | Pygmy rock crab = Cancer oregonensis (1) |
| Pygospio elegans (1) | Pyrolysis (1) | Pysht Formation (1) |
