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California Clapper Rail
Ridgway's rail (''Rallus obsoletus'') is a near-threatened species of bird. It is found principally in California's San Francisco Bay to southern Baja California. A member of the rail family, Rallidae, it is a chicken-sized bird that rarely flies. This species is closely related to the clapper rail, and until recently was considered a subspecies. It has a long, downward curving bill and is grayish brown with a pale chestnut breast and conspicuous whitish rump patch. The population levels of Ridgway's rail are precariously low due to destruction of its coastal and estuarine marshland habitat by prior land development and shoreline fill. It has year-long, circadian activity and is most vocal nocturnally and crepuscularly. The Ridgway's rail pertains to the Rallidae family within order Gruiformes. The California subspecies naturally exists in tidal salt and brackish marshes. These ecosystems are subjected to freely flowing daily tidal flows, a sustainable amount of prey food supply ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Ridgway
Robert Ridgway (July 2, 1850 – March 25, 1929) was an American ornithologist specializing in systematics. He was appointed in 1880 by Spencer Fullerton Baird, secretary of the Smithsonian Institution, to be the first full-time curator of birds at the United States National Museum, a title he held until his death. In 1883, he helped found the American Ornithologists' Union, where he served as officer and journal editor. Ridgway was an outstanding descriptive taxonomist, capping his life work with ''The Birds of North and Middle America'' (eight volumes, 1901–1919). In his lifetime, he was unmatched in the number of North American bird species that he described for science. As technical illustrator, Ridgway used his own paintings and outline drawings to complement his writing. He also published two books that systematized color names for describing birds, ''A Nomenclature of Colors for Naturalists'' (1886) and ''Color Standards and Color Nomenclature'' (1912). Ornitholo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mussel
Mussel () is the common name used for members of several families of bivalve molluscs, from saltwater and Freshwater bivalve, freshwater habitats. These groups have in common a shell whose outline is elongated and asymmetrical compared with other edible clams, which are often more or less rounded or oval. The word "mussel" is frequently used to mean the bivalves of the marine family Mytilidae, most of which live on exposed shores in the intertidal zone, attached by means of their strong Byssus, byssal threads ("beard") to a firm substrate. A few species (in the genus ''Bathymodiolus'') have colonised hydrothermal vents associated with deep ocean ridges. In most marine mussels the shell is longer than it is wide, being wedge-shaped or asymmetrical. The external colour of the shell is often dark blue, blackish, or brown, while the interior is silvery and somewhat nacreous. The common name "mussel" is also used for many freshwater bivalves, including the freshwater pearl mussels. F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Damon Marsh
The Damon Marsh is a tidal wetland at the northern edge of San Leandro Bay in Oakland, California, USA. There is a paved long shoreline trail along the waterfront to allow visual access to the San Leandro Bay and through the marsh itself. One end of this trailhead lies at Damon Slough. Access to the marsh is via the Hegenberger Road exit of Interstate 880. A 1989 biological study of the Damon Marsh found that this habitat supports the California clapper rail (''Rallus longirostros obsoletus''), a federally and state-listed endangered avian species.Earth Metrics Incorporated, ''Biological Reconnaissance for the Edgewater Drive Extension Project'', prepared for the Port of Oakland, Report 9799A1, 1989 Notes See also *California Least Tern * Kayaking *Salt Marsh Harvest Mouse The salt marsh harvest mouse (''Reithrodontomys raviventris''), also known as the red-bellied harvest mouse, is an endangered rodent endemic to the San Francisco Bay Area salt marshes in California. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arrowhead Marsh
Arrowhead Marsh is a wetlands habitat made of tidal mud flats in Martin Luther King, Jr. Shoreline in Oakland, California. It is an important stop on the Pacific flyway and is habitat for important endangered species especially the Salt Marsh Harvest Mouse. See also *Damon Marsh The Damon Marsh is a tidal wetland at the northern edge of San Leandro Bay in Oakland, California, USA. There is a paved long shoreline trail along the waterfront to allow visual access to the San Leandro Bay and through the marsh itself. One en ... References Landforms of Alameda County, California Wetlands of the San Francisco Bay Area Marshes of California {{AlamedaCountyCA-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Rafael, California
San Rafael ( ; Spanish language, Spanish for "Raphael (archangel), St. Raphael", ) is a city and the county seat of Marin County, California, Marin County, California, United States. The city is located in the North Bay (San Francisco Bay Area), North Bay region of the San Francisco Bay Area. As of the 2020 United States census, 2020 U.S. census, the city's population was 61,271, up from 57,713 in 2010. San Rafael was founded by the Spanish in 1817, when Vicente Francisco de Sarría established Mission San Rafael Arcángel, initially as an Asistencias, ''asistencia'' (sub-mission). San Rafael Arcángel was upgraded to full Spanish missions in California, mission status in 1822, a month before Alta California declared independence from Spain as part of First Mexican Empire, Mexico. Following the American Conquest of California, the community of San Rafael incorporated as a city in 1874. History San Rafael was once the site of several Coast Miwok villages: ''Awani-wi'', near downt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mill Valley, California
Mill Valley is a city in Marin County, California, Marin County, California, United States, located about north of San Francisco via the Golden Gate Bridge and from Napa Valley. The population was 14,231 at the 2020 United States Census, 2020 census. Mill Valley is located on the western and northern shores of Richardson Bay, and the eastern slopes of Mount Tamalpais. Beyond the flat coastal area and marshlands, it occupies narrow wooded canyons, mostly of second-growth Sequoia sempervirens, redwoods, on the southeastern slopes of Mount Tamalpais. The Mill Valley 94941 ZIP Code also includes the following adjacent unincorporated communities: Almonte, Alto, California, Alto, Tamalpais-Homestead Valley, California, Homestead Valley, Tamalpais Valley, and Strawberry, Marin County, California, Strawberry. The Muir Woods National Monument is also located just outside the city limits. History Coast Miwok The first people known to inhabit Marin County, the Coast Miwok, arrived appro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bothin Marsh
Bothin Marsh is a wetland in Marin County, California. Parts of the wetlands are in the Bothin Marsh Open Space Preserve, a regional park. Natural history The marsh, positioned at the northern arm of Richardson Bay is fed by Arroyo Corte Madera del Presidio. Bothin Marsh is situated not far from Triangle Marsh, although the latter is situated on the northern edge of the Tiburon Peninsula. It is likely that Native Americans gathered estuarine resources from Bothin Marsh, as they did from nearby Triangle Marsh. History Jo Julin was instrumental in the preservation of Bothin Marsh in the early 1970s, when developers attempted to drain the marsh in order to begin construction. Today the Bothin Marsh Open Space Preserve provides habitat for hundreds of native bird and wildlife species, including the endangered salt marsh harvest mouse and Ridgway's rail. It's also a resting stop for over 400 species of migratory birds traveling on the Pacific Flyway. ''Salicornia virginica ''Sal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Napa Sonoma Marsh
The Napa Sonoma Marsh is a wetland at the northern edge of San Pablo Bay, which is a northern arm of the San Francisco Bay in California, United States. This marsh has an area of 48,000 acres (194 km2), of which 13,000 acres (53 km2) are abandoned salt evaporation ponds. The United States Government has designated 13,000 acres (53 km2) in the Napa Sonoma Marsh as the San Pablo Bay National Wildlife Refuge. The marsh is fed by Sonoma Creek (which drains the Sonoma Valley), Tolay Creek (originating in the Tolay Lake basin), and the Napa River (which drains the Napa Valley). Although the marsh extends north as far as State Route 12, as a practical matter, most of the marsh is only accessible by boat. The marsh is a productive estuarine ecosystem providing habitat for a wide diversity of flora and fauna, including numerous rare and endangered species such as the California clapper rail and California freshwater shrimp. Because of its rich avafaunal content, the Napa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Don Edwards San Francisco Bay National Wildlife Refuge
Don Edwards San Francisco Bay National Wildlife Refuge (DESFBNWR) is a United States National Wildlife Refuge located in the southern part of San Francisco Bay, California. The Refuge headquarters and visitor center is located in the Baylands district of Fremont, next to Coyote Hills Regional Park, in Alameda County. The visitor center is on Marshlands Rd, off Thornton Ave. Most of the refuge stretches along the marshy shoreline north and south of the Dumbarton Bridge, but Bair Island, in San Mateo County, is also part of the system. The southernmost extent of the refuge is in northern Santa Clara County. History It was founded in 1974 as the first urban National Wildlife Refuge established in the United States, and it is dedicated to preserving and enhancing wildlife habitat, protecting migratory birds, protecting threatened and endangered species, and providing opportunities for wildlife-oriented recreation and nature study for the surrounding communities. As of 2004, the R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dumbarton Bridge (California)
The Dumbarton Bridge is the southernmost of the highway bridges across San Francisco Bay in California. Carrying over 70,000 vehicles and about 118 pedestrian and bicycle crossings daily (384 on weekends), it is the shortest bridge across San Francisco Bay at . Its eastern end is in Fremont, near Newark in the San Francisco Bay National Wildlife Refuge, and its western end is in Menlo Park. Bridging State Route 84 across the bay, it has three lanes each way and a separated bike/pedestrian lane along its south side. Like the San Mateo Bridge to the north, power lines parallel the bridge. History and engineering features The bridge has never been officially named, but its commonly used name comes from Dumbarton Point, named in 1876 after Dumbarton, Scotland. Built originally to provide a shortcut for traffic originating in San Mateo and Santa Clara counties, the bridge served industrial and residential areas on both sides. The earlier bridge opened on January 17, 1927, and was t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mudflat
Mudflats or mud flats, also known as tidal flats or, in Ireland, slob or slobs, are coastal wetlands that form in intertidal areas where sediments have been deposited by tides or rivers. A global analysis published in 2019 suggested that tidal flat ecosystems are as extensive globally as mangroves, covering at least of the Earth's surface. / They are found in sheltered areas such as bays, bayous, lagoons, and estuaries; they are also seen in freshwater lakes and salty lakes (or inland seas) alike, wherein many rivers and creeks end. Mudflats may be viewed geologically as exposed layers of bay mud, resulting from deposition of estuarine silts, clays and aquatic animal detritus. Most of the sediment within a mudflat is within the intertidal zone, and thus the flat is submerged and exposed approximately twice daily. A recent global remote sensing analysis estimated that approximately 50% of the global extent of tidal flats occurs within eight countries (Indonesia, China, Austral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Worm
Worms are many different distantly related bilateral animals that typically have a long cylindrical tube-like body, no limbs, and no eyes (though not always). Worms vary in size from microscopic to over in length for marine polychaete worms (bristle worms); for the African giant earthworm, ''Microchaetus rappi''; and for the marine nemertean worm (bootlace worm), ''Lineus longissimus''. Various types of worm occupy a small variety of parasitic niches, living inside the bodies of other animals. Free-living worm species do not live on land but instead live in marine or freshwater environments or underground by burrowing. In biology, "worm" refers to an obsolete taxon, ''vermes'', used by Carolus Linnaeus and Jean-Baptiste Lamarck for all non-arthropod invertebrate animals, now seen to be paraphyletic. The name stems from the Old English word ''wyrm''. Most animals called "worms" are invertebrates, but the term is also used for the amphibian caecilians and the slowworm '' A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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