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Roseburg Formation
The Southern Oregon Coast Range is the southernmost section of the Oregon Coast Range, in the Pacific Coast Ranges, located in the southwest portion of the state of Oregon, United States, roughly between the Umpqua River and the middle fork of the Coquille River, beyond which are the Klamath Mountains. To the east is the Umpqua Valley and to the west the Pacific Ocean. This approximately -long mountain range contains mountains as high as for Bone Mountain. The mountains are known locally in the Roseburg area as the Callahan Mountains, or simply as The Callahans. Geology As with the Oregon Coast Range as a whole, the Southern Oregon Coast Range likely began as an ocean island chain that collided with the continental tectonic plate of North America more than 60 million years ago.Orr, Elizabeth and William Orr, and Ewart Baldwin. Geology of Oregon. Kendall/Hunt Publishing, 1992, 4th edition. In the Southern Range the 64-million-year-old Roseburg Volcanics that formed this sect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oregon
Oregon ( , ) is a U.S. state, state in the Pacific Northwest region of the United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while the Snake River delineates much of its eastern boundary with Idaho. The 42nd parallel north, 42° north parallel delineates the southern boundary with California and Nevada. The western boundary is formed by the Pacific Ocean. Oregon has been home to many Indigenous peoples of the Americas, indigenous nations for thousands of years. The first European traders, explorers, and settlers began exploring what is now Oregon's Pacific coast in the early to mid-16th century. As early as 1564, the Spanish expeditions to the Pacific Northwest, Spanish began sending vessels northeast from the Philippines, riding the Kuroshio Current in a sweeping circular route across the northern part of the Pacific. In 1592, Juan de Fuca undertook detailed mapping a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes from the Ancient Greek (''Ēṓs'', 'Eos, Dawn') and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch.See: *Letter from William Whewell to Charles Lyell dated 31 January 1831 in: * From p. 55: "The period next antecedent we shall call Eocene, from ήως, aurora, and χαινος, recens, because the extremely small proportion of living species contained in these strata, indicates what may be considered the first commencement, or ''dawn'', of the existing state of the animate creation." The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isoto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thuja Plicata
''Thuja plicata'' is a large evergreen coniferous tree in the family Cupressaceae, native to the Pacific Northwest of North America. Its common name is western redcedar in the U.S. or western red cedar in the UK, and it is also called pacific red cedar, giant arborvitae, western arborvitae, just cedar, giant cedar, or shinglewood. It is not a true cedar of the genus ''Cedrus''. ''T. plicata'' is the largest species in the genus ''Thuja'', growing up to tall and in diameter. It mostly grows in areas that experience a mild climate with plentiful rainfall, although it is sometimes present in drier areas on sites where water is available year-round, such as wet valley bottoms and mountain streamsides. The species is shade-tolerant and able to establish in forest understories and is thus considered a climax species. It is a very long-lived tree, with some specimens reaching ages of well over 1,000 years. Indigenous peoples of the Pacific Northwest use the wood of this species for ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fisher (animal)
The fisher (''Pekania pennanti'') is a carnivorous mammal native to North America, a forest-dwelling creature whose range covers much of the taiga, boreal forest in Canada to the northern United States. It is a member of the Mustelidae, mustelid family, and is the only living member of the genus ''Pekania''. It is sometimes referred to as a fisher cat, although it is not a Felidae, cat. The fisher is closely related to, but larger than, the American marten (''Martes americana'') and Pacific marten (''Martes caurina''). In some regions, the fisher is known as a ''pekan'', derived from its name in the Abenaki language, or ''wejack'', an Algonquian languages, Algonquian word (cf. Cree language, Cree , Ojibwe language, Ojibwa ) borrowed by fur traders. Other Native American names for the fisher are Chipewyan language, Chipewyan and Carrier language, Carrier , both meaning "big marten", and Eastern Algonquian languages, Wabanaki ''uskool''. Fishers have few predators besides human ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coho Salmon
The coho salmon (''Oncorhynchus kisutch;'' Karuk: achvuun) is a species of anadromous fish in the salmon family (biology), family and one of the five Pacific salmon species. Coho salmon are also known as silver salmon (or "silvers") and is often sold as medium red salmon. The scientific species name is based on the Russian language, Russian common name ''kizhuch'' (кижуч). Description During their ocean phase, coho salmon have silver sides and dark-blue backs with spots on their back and upper tail lobe. During their spawning phase, their jaws and teeth become hooked. After entering fresh water, they develop bright-red sides, bluish-green heads and backs, dark bellies and dark spots on their backs. Sexually maturing fish develop a light-pink or rose shading along the belly, and the males may show a slight arching of the back. Mature adults have a pronounced red skin color with darker backs and spots, with females having darker shades than males. Coho salmon average 20 to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coastal Cutthroat Trout
The coastal cutthroat trout (''Oncorhynchus clarkii'', sometimes referred as ''Oncorhynchus clarkii clarkii''), also known as the sea-run cutthroat trout, blue-back trout or harvest trout, is one of the four speciesTrotter, Patrick; Bisson, Peter; Roper, Brett; Schultz, Luke; Ferraris, Carl; Smith, Gerald R.; Stearley, Ralph F. (2018), Trotter, Patrick; Bisson, Peter; Shultz, Luke; Roper, Brett (eds.), "A Special Workshop on the Taxonomy and Evolutionary Biology of Cutthroat Trout", ''Cutthroat Trout: Evolutionary Biology and Taxonomy'', American Fisheries Society, , , retrieved 2024-08-12Love Stowell; Metcalf; Markle; Stearly (2018), Trotter; Bisson; Shultz; Roper (eds.), "Species Conceptualization and Delimitation: A Framework for the Taxonomic Revision of Cutthroat Trout", ''Cutthroat Trout: Evolutionary Biology and Taxonomy'', American Fisheries Society, , , retrieved 2024-08-13 of cutthroat trout found in western North America. The coastal cutthroat trout occurs in four dist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lamprey
Lampreys (sometimes inaccurately called lamprey eels) are a group of Agnatha, jawless fish comprising the order (biology), order Petromyzontiformes , sole order in the Class (biology), class Petromyzontida. The adult lamprey is characterized by a toothed, funnel-like sucking mouth. The common name "lamprey" is probably derived from Latin , which may mean "stone licker" ( "to lick" + "stone"), though the etymology is uncertain. "Lamprey" is sometimes seen for the plural form. About 38 extant species of lampreys are known, with around seven known extinct species. They are classified in three families—two small families in the Southern Hemisphere (Geotriidae, Mordaciidae) and one large family in the Northern Hemisphere (Petromyzontidae). Genetic evidence suggests that lampreys are more closely related to hagfish, the only other living group of jawless fish, than they are to jawed vertebrates, forming the superclass Cyclostomi. The oldest fossils of stem-group lampreys are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Threatened Species
A threatened species is any species (including animals, plants and fungi) which is vulnerable to extinction in the near future. Species that are threatened are sometimes characterised by the population dynamics measure of ''critical depensation'', a mathematical measure of biomass related to population growth rate. This quantitative metric is one method of evaluating the degree of endangerment without direct reference to human activity. IUCN definition The International Union for Conservation of Nature (IUCN) is the foremost authority on threatened species, and treats threatened species not as a single category, but as a group of three categories, depending on the degree to which they are threatened: *Vulnerable species *Endangered species *Critically endangered species Less-than-threatened categories are near threatened, least concern, and the no longer assigned category of conservation dependent. Species that have not been evaluated (NE), or do not have sufficient data ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Spotted Owl
The northern spotted owl (''Strix occidentalis caurina'') is one of three spotted owl subspecies. A western North American bird in the family Strigidae, genus ''Strix (genus), Strix'', it is a medium-sized dark brown owl native to the Pacific Northwest. An important Bioindicator, indicator species, the northern spotted owl remains Threatened species, threatened due to continued population decline from human-caused habitat destruction and competition with invasive species, its main competitor being the barred owl. Description Northern spotted owls have dark brown plumage with white spots and no ear tufts. They are typically around sixteen to nineteen inches in length and one to one and one sixth pounds. They have a round facial disc that is dark brown with a visible "X" between their eyes. Females are about 10-20% larger than males. Their wingspan is approximately 42 inches. They are a mainly nocturnal species, and form long-term pair bonds. While most owls have yellow to red- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pileated Woodpecker
The pileated woodpecker ( ; ''Dryocopus pileatus'') is a large, crow-sized woodpecker with a prominent red crest, white neck stripe, and a mostly black body. These woodpeckers are native to North America, where it is the largest confirmed extant woodpecker species, and they are the third largest extant species of woodpecker in the world, after the great slaty woodpecker and the black woodpecker. It inhabits deciduous forests in eastern North America, the Great Lakes, the boreal forests of Canada, and parts of the Pacific Coast. The woodpecker is primarily an insectivore and eats insects that live in trees. Pileateds are famous for making large, nearly rectangular carvings into trees, which they either used to extract prey inside the tree or to make a nest. They are a species with a large range and an increasing population, causing them to be categorized as a species of "least concern" by the IUCN in 2016. Taxonomy The English naturalist Mark Catesby described and illustrated th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peregrine Falcon
The peregrine falcon (''Falco peregrinus''), also known simply as the peregrine, is a Cosmopolitan distribution, cosmopolitan bird of prey (raptor) in the family (biology), family Falconidae renowned for its speed. A large, Corvus (genus), crow-sized falcon, it has a blue-grey back, barred white underparts, and a black head. As is typical for avivore, bird-eating (avivore) raptors, peregrine falcons are Sexual dimorphism, sexually dimorphic, with females being considerably larger than males. Historically, it has also been known as "black-cheeked falcon" in Australia, and "duck hawk" in North America. The breeding range includes land regions from the Arctic tundra to the tropics. It can be found nearly everywhere on Earth, except extreme polar regions, very high mountains, and most tropical rainforests; the only major ice-free landmass from which it is entirely absent is New Zealand. This makes it the world's most widespread Raptor (bird), raptor and one of the most widely found ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gaultheria Shallon 1676
''Gaultheria'' is a genus of about 283 species of shrubs in the family Ericaceae. The name commemorates Jean François Gaultier of Quebec, an honour bestowed by the Scandinavian Pehr Kalm in 1748 and taken up by Carl Linnaeus in his '. These plants are native to Asia, Australasia and North and South America. In the past, the Southern Hemisphere species were often treated as the separate genus ''Pernettya'', but no consistent reliable morphological or genetic differences support recognition of two genera, and they are now united in the single genus ''Gaultheria''. Description The species vary from low, ground-hugging shrubs less than tall, up to tall, or, in the case of '' G. fragrantissima'' from the Himalayas, even a small tree up to tall. The leaves are evergreen, alternate (opposite in '' G. oppositifolia'' from New Zealand), simple, and vary between species from long; the margins are finely serrated or bristly in most species, but entire in some. The flowers are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
