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Midvalley Fairy Shrimp
The midvalley fairy shrimp, ''Branchinecta mesovallensis'', is a small () freshwater crustacean in the Branchinectidae family endemic to shallow ephemeral pools (pools that seasonally fill and dry up) near the middle of California's Central Valley. These vernal pool ecosystems are home to other unique organisms adapted to the ephemeral nature of the water cycle in the pools in California's mediterranean climate. It is one of eight known branchiopod species found only in Northern California. The species swims through the water on its back, using two stalked compound eyes to see where it is going. It propels itself along by beating its phyllopods. These are legs with leaflike or paddlelike structures. The moving phyllopods also serve as gills, extracting oxygen from the water stream they create. This places the shrimp in the Class Branchiopoda ("branchio" meaning gill, and "poda" meaning feet). Federal protection denied On August 31, 2001, the U.S. Fish and Wildlife Serv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crustacean
Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can be treated as a subphylum under the clade Mandibulata. It is now well accepted that the hexapods emerged deep in the Crustacean group, with the completed group referred to as Pancrustacea. Some crustaceans (Remipedia, Cephalocarida, Branchiopoda) are more closely related to insects and the other hexapods than they are to certain other crustaceans. The 67,000 described species range in size from '' Stygotantulus stocki'' at , to the Japanese spider crab with a leg span of up to and a mass of . Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates, by the possession of biramous (two-parted) limbs, and by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bacteria
Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep biosphere of Earth's crust. Bacteria are vital in many stages of the nutrient cycle by recycling nutrients such as the fixation of nitrogen from the atmosphere. The nutrient cycle includes the decomposition of dead bodies; bacteria are responsible for the putrefaction stage in this process. In the biological communities surrounding hydrothermal vents and cold seeps, extremophile bacteria provide the nutrients needed to sustain life by converting dissolved compounds, such as hydrogen sulphide and methane, to energy. Bacteria also live in symbiotic and parasitic relationsh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Joaquin County, California
San Joaquin County (; Spanish: ''San Joaquín'', meaning " St. Joachim"), officially the County of San Joaquin, is a county in the U.S. state of California. As of the 2020 census, the population was 779,233. The county seat is Stockton. San Joaquin County comprises the Stockton– Lodi– Tracy metropolitan statistical area within the regional San Jose–San Francisco– Oakland combined statistical area. The county is located in Northern California's Central Valley just east of the very highly populated nine-county San Francisco Bay Area region and is separated from the Bay Area by the Diablo Range of low mountains with its Altamont Pass. One of the smaller counties by area in California, it has a high population density and is growing rapidly due to overflow from the Bay Area's need for housing. The City of San Joaquin, despite sharing its name with the county, is located in Fresno County. History San Joaquin County was one of the original United States counties of Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contra Costa County, California
) of the San Francisco Bay , subdivision_type = Country , subdivision_name = United States , subdivision_type1 = State , subdivision_name1 = California , subdivision_type2 = Region , subdivision_name2 = San Francisco Bay Area , seat_type = County seat , seat = Martinez , parts_type = Largest city , parts = Concord (population and land area)Richmond (total area) , unit_pref = US , area_total_sq_mi = 804 , area_land_sq_mi = 715.94 , area_water_sq_mi = 81 , elevation_max_footnotes = , elevation_max_ft = 3852 , population_as_of = 2020 , population_footnotes = , population_total = 1,165,927 , population_density_sq_mi = 1629 , established_title ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solano County, California
Solano County () is a county located in the U.S. state of California. As of the 2020 census, the population was 453,491. The county seat is Fairfield. Solano County comprises the Vallejo–Fairfield, CA Metropolitan Statistical Area, which is also included in the San Jose–San Francisco–Oakland, CA Combined Statistical Area. Solano County is the northeastern county in the nine-county San Francisco Bay Area region. A portion of the South Campus at the University of California, Davis is in Solano County. History Solano County was one of the original counties of California, created in 1850 at the time of statehood. At the request of General Mariano Guadalupe Vallejo, the county was named for Chief Solano of the Suisun people, a Native American tribe of the region and Vallejo's close ally. Chief Solano at one time led the tribes between the Petaluma River and the Sacramento River. The chief was also called ''Sem-Yeto'', which signifies "brave or fierce hand." The Chief ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sacramento County, California
Sacramento County () is a county located in the U.S. state of California. As of the 2020 census, the population was 1,585,055. Its county seat is Sacramento, which has been the state capital of California since 1854. Sacramento County is the central county of the Greater Sacramento metropolitan area. The county covers about in the northern portion of the Central Valley, on into Gold Country. Sacramento County extends from the low delta lands between the Sacramento River and San Joaquin River, including Suisun Bay, north to about ten miles (16 km) beyond the State Capitol and east into the foothills of the Sierra Nevada Mountains. The southernmost portion of Sacramento County has direct access to San Francisco Bay. Since 2010, statewide droughts in California have further strained Sacramento County's water security. History Sacramento County was one of the original counties of California, which were created in 1850 at the time of statehood. The county was named after ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ephemeral Wetland
Ephemerality (from the Greek word , meaning 'lasting only one day') is the concept of things being transitory, existing only briefly. Academically, the term ephemeral constitutionally describes a diverse assortment of things and experiences, from digital media to types of streams. "There is no single definition of ephemerality". With respect to unique performances, for example, it has been noted that " hemerality is a quality caused by the ebb and flow of the crowd's concentration on the performance and a reflection of the nostalgic character of specific performances". Because different people may value the passage of time differently, ephemerality may be a relative, perceptual concept: "In brief, what is short-lived may not be the object itself, but the attention we afford it".Ronald Beiner, ''Political Philosophy: What It Is and Why It Matters'' (2014), p. 10. Ephemerality and nature Geographical features An ephemeral stream is that which only exists following precipitatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eureka, California
Eureka (Wiyot: ''Jaroujiji'', Hupa: ''do'-wi-lotl-ding'', Karuk: ''uuth'') is the principal city and county seat of Humboldt County in the Redwood Empire region of California. The city is located on U.S. Route 101 on the shores of Humboldt Bay, north of San Francisco and south of the Oregon border. At the 2010 census, the population of the city was 27,191, and the population of Greater Eureka was 45,034. Eureka is the largest coastal city between San Francisco and Portland, Oregon, and the westernmost city of more than 25,000 residents in the 48 contiguous states.Eureka (city), California , State & County QuickFacts, January 10, 2013, note: in data set The proximity to the sea causes the city to have an extremely maritime clim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mad River Press
Mad, mad, or MAD may refer to: Geography * Mad (village), a village in the Dunajská Streda District of Slovakia * Mád, a village in Hungary * Adolfo Suárez Madrid–Barajas Airport, by IATA airport code * Mad River (other), several rivers Music Bands * Mad (band), a rock band from Buenos Aires, Argentina * M.A.D (band), a British boyband * M.A.D. (punk band), a 1980s band, which later became Blast * Meg and Dia, an American indie rock band Albums * ''Mad'' (Raven EP), released in 1986 * ''Mad'' (Hadouken! EP), released in 2009 * ''Mad'' (GOT7 EP), released 2015 Songs * "Mad" (Ne-Yo song), 2008 * "Mad", by Dave Dudley from ''Talk of the Town'', 1964 * "Mad", from ''Secret Life of Harpers Bizarre'', 1968 * "Mad", by The Lemonheads from ''Lick'', 1989 * "Mad", from the album '' Magnetic Man'', 2010 * "Mad", by Cassie Steele, 2014 * "M・A・D" (Buck-Tick song), 1991 Organizations * MAD Studio, an architectural firm * Make A Difference, an Indian NGO * Might ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antenna (biology)
Antennae ( antenna), sometimes referred to as "feelers", are paired appendages used for sensing in arthropods. Antennae are connected to the first one or two segments of the arthropod head. They vary widely in form but are always made of one or more jointed segments. While they are typically sensory organs, the exact nature of what they sense and how they sense it is not the same in all groups. Functions may variously include sensing touch, air motion, heat, vibration (sound), and especially smell or taste. Antennae are sometimes modified for other purposes, such as mating, brooding, swimming, and even anchoring the arthropod to a substrate. Larval arthropods have antennae that differ from those of the adult. Many crustaceans, for example, have free-swimming larvae that use their antennae for swimming. Antennae can also locate other group members if the insect lives in a group, like the ant. The common ancestor of all arthropods likely had one pair of uniramous (unbranched ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conservancy Fairy Shrimp
The conservancy fairy shrimp (''Branchinecta conservatio'') is a small crustacean in the family Branchinectidae. It ranges in size from about to long. Fairy shrimp are aquatic species in the order Anostraca. They have delicate elongate bodies, large stalked compound eyes, no carapaces, and eleven pairs of swimming legs. They glide gracefully upside down, swimming by beating their legs in a complex, wavelike movement that passes from front to back. Fairy shrimp feed on algae, bacteria, protozoa, rotifers and detritus. This species is endemic to California in the United States. Ecology Conservancy fairy shrimp inhabit rather large, moderately turbid cool-water vernal pools which fill with water in the rainy season, then slowly dry up from their outer, more shallow edges to their deeper areas in the center. However, the shrimp are gone long before the pool finally dries up. The fairy shrimp have been spotted and collected in vernal pools from early November to early April. Female ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Southwestern Naturalist
''The'' () is a grammatical article in English, denoting persons or things that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the most frequently used word in the English language; studies and analyses of texts have found it to account for seven percent of all printed English-language words. It is derived from gendered articles in Old English which combined in Middle English and now has a single form used with nouns of any gender. The word can be used with both singular and plural nouns, and with a noun that starts with any letter. This is different from many other languages, which have different forms of the definite article for different genders or numbers. Pronunciation In most dialects, "the" is pronounced as (with the voiced dental fricative followed by a schwa) when followed by a consonant sound, and as (homophone of the archaic pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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