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Poa Atropurpurea
''Poa atropurpurea'' is a rare species of grass known by the common name San Bernardino bluegrass. It is endemic to southern California, where it is known from two regions, the San Bernardino Mountains near Big Bear and the Laguna Mountains of San Diego County. Description It grows in wet mountain meadows. It is a rhizomatous perennial grass growing in small, loose tufts up to about half a meter tall. The firm, narrow leaves often have rolled or folded edges. It is a dioecious plant, with male and female individuals bearing different flower types. The inflorescence is somewhat lance-shaped, with branches appressed, spreading upwards along the stem axis. Male and female inflorescences look similar. They may hold up to 70 spikelets each, which are purplish in color. Habitat In the San Bernardino Mountains the grass occurs in the pebble plain habitat near Big Bear with other rare plant species.USFWSFinal rule to determine endangered or threatened status for six plants from the mount ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palomar Mountain
Palomar Mountain ( ; ) is a mountain ridge in the Peninsular Ranges in northern San Diego County, California. It is known as the location of Palomar Observatory and Hale Telescope, and known for Palomar Mountain State Park. History The Luiseño name for Palomar Mountain was and High Point was called . The Spanish name ''Palomar'', meaning "pigeon roost" or "place of the pigeons", comes from the Spanish colonial era in Alta California when Palomar Mountain was known as the home of band-tailed pigeons. The peak was once called Mount Joseph Smith but reverted to its Spanish name, Palomar, in 1901. During the 1890s, the population was sufficient to support three public schools, and it was a popular summer resort for Southern California, with three hotels in operation part of the time, and a tent city in Doane Valley each summer. Nathan Harrison, the first African American homesteader in San Diego area, purchased several acres on the western slope of the mountain in the 1880s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural History Of The Peninsular Ranges
Nature is an inherent character or constitution, particularly of the ecosphere or the universe as a whole. In this general sense nature refers to the laws, elements and phenomena of the physical world, including life. Although humans are part of nature, human activity or humans as a whole are often described as at times at odds, or outright separate and even superior to nature. During the advent of modern scientific method in the last several centuries, nature became the passive reality, organized and moved by divine laws. With the Industrial Revolution, nature increasingly became seen as the part of reality deprived from intentional intervention: it was hence considered as sacred by some traditions (Rousseau, American transcendentalism) or a mere decorum for divine providence or human history (Hegel, Marx). However, a vitalist vision of nature, closer to the pre-Socratic one, got reborn at the same time, especially after Charles Darwin. Within the various uses of the word t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Native Grasses Of California
Native may refer to: People * '' Jus sanguinis'', nationality by blood * '' Jus soli'', nationality by location of birth * Indigenous peoples, peoples with a set of specific rights based on their historical ties to a particular territory ** Native Americans (other) In arts and entertainment * Native (band), a French R&B band * Native (comics), a character in the X-Men comics universe * ''Native'' (album), a 2013 album by OneRepublic * ''Native'' (2016 film), a British science fiction film * ''The Native'', a Nigerian music magazine In science * Native (computing), software or data formats supported by a certain system * Native language, the language(s) a person has learned from birth * Native metal, any metal that is found in its metallic form, either pure or as an alloy, in nature * Native species, a species whose presence in a region is the result of only natural processes * List of Australian plants termed "native", whose common name is of the form "native . . ." ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Flora Of California
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or becomi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grazing
In agriculture, grazing is a method of animal husbandry whereby domestic livestock are allowed outdoors to free range (roam around) and consume wild vegetations in order to feed conversion ratio, convert the otherwise indigestible (by human digestive system, human gut) cellulose within grass and other forages into meat, milk, wool and other animal products, often on land that is unsuitable for arable farming. Farmers may employ many different strategies of grazing for crop yield, optimum production: grazing may be continuous, seasonal, or rotational grazing, rotational within a grazing period. Longer rotations are found in ley farming, alternating arable and fodder crops; in rest rotation, deferred rotation, and mob grazing, giving grasses a longer time to recover or leaving land fallow. Patch-burn sets up a rotation of fresh grass after burning with two years of rest. Conservation grazing proposes to use grazing animals to improve the biodiversity of a site. Grazing has existed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bear Mountain (Ski Area)
Bear Mountain, formerly known as the Moonridge Ski Area (1943–1969), Goldmine Mountain (1970–1987), and Big Bear Mountain (1988–2001) is a ski area originally established in 1941 in the San Bernardino National Forest in Southern California, United States. It is located in the city of Big Bear Lake, approximately 2.4 miles east of Snow Summit and 14.8 miles east from Snow Valley. Together, the three ski areas are known as Big Bear Mountain Resort, which is part of Alterra Mountain Company. Resort Bear Mountain (base: 7,140 feet, peak: 8,805 feet) has three main peaks – Bear Peak, Silver Mountain, and Goldmine Mountain – that receive an average of of natural snowfall during the winter. Like many North American ski resorts, the mountain relies on artificial snowmaking during the early part of the ski and snowboard season until the natural snowfall arrives. Known for its youthful atmosphere and progressive terrain, Bear Mountain established the first freestyle terrain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Big Bear City Airport
Big Bear City Airport is a high-elevation public airport, operated by the Big Bear Airport District, located in the San Bernardino Mountains in Big Bear City, California, United States. Facilities and aircraft Big Bear City Airport covers an area of which contains one asphalt paved runway (8/26) measuring 5,850 x 75 ft (1,783 x 23 m). In 2004, the airport had 30,000 aircraft operations, an average of 82 per day: 93% general aviation and 7% military. There are 141 aircraft based at this airport: 94% single engine, 3% multi-engine, 2% ultralight and 1% glider. The Barnstorm Restaurant in the terminal building serves German-American cuisine and is open every day from 7am to 3pm for breakfast and lunch. It is open from 5pm to 9pm Thursday through Sunday for dinner. Specific flight rules Big Bear City Airport has published specific flight rules for aircraft. At the time of writing, the established procedure is for inbound traffic to fly in over the ski slopes at 9,50 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Off-road Vehicle
An off-road vehicle (ORV), also known as an off-highway vehicle (OHV), overland vehicle or adventure vehicle, is a type of transportation specifically engineered to navigate unpaved roads and surfaces. These include trails, forest roads, and other low-traction terrains. Off-road vehicles are widely used in various contexts, from recreational activities to practical applications like agriculture and construction. Events such as the annual Dakar Rally, which spans multiple countries and challenges participants with diverse and extreme terrains, have brought significant attention to these vehicles. History One of the earliest modified off-road vehicles was the Kégresse track, a system for modifying cars developed by Adolphe Kégresse while working for Tsar Nicholas II of Russia between 1906 and 1916. The system employed a caterpillar track with a flexible belt instead of interlocking metal segments, which could be fitted to a conventional vehicle, turning it into a half-trac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endangered Species
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching, invasive species, and climate change. The International Union for Conservation of Nature (IUCN) Red List lists the global conservation status of many species, and various other agencies assess the status of species within particular areas. Many nations have laws that protect conservation-reliant species which, for example, forbid hunting, restrict land development, or create protected areas. Some endangered species are the target of extensive conservation efforts such as captive breeding and habitat restoration. Human activity is a significant cause in causing some species to become endangered. Conservation status The conservation status of a species indicates the likelihood that it will become extinct. Multiple factors are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pebble Plain
A pebble is a clast of rock with a particle size of based on the Udden-Wentworth scale of sedimentology. Pebbles are generally considered larger than granules ( in diameter) and smaller than cobbles ( in diameter). A rock made predominantly of pebbles is termed a conglomerate. Pebble tools are among the earliest known man-made artifacts, dating from the Palaeolithic period of human history. A beach composed chiefly of surface pebbles is commonly termed a shingle beach. This type of beach has armoring characteristics with respect to wave erosion, as well as ecological niches that provide habitat for animals and plants. Inshore banks of shingle (large quantities of pebbles) exist in some locations, such as the entrance to the River Ore, England, where the moving banks of shingle give notable navigational challenges. Pebbles come in various colors and textures and can have streaks, known as veins, of quartz or other minerals. Pebbles are mostly smooth but, dependent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poaceae
Poaceae ( ), also called Gramineae ( ), is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos, the grasses of natural grassland and species cultivated in lawns and pasture. The latter are commonly referred to collectively as grass. With around 780 genera and around 12,000 species, the Poaceae is the fifth-largest plant family, following the Asteraceae, Orchidaceae, Fabaceae and Rubiaceae. The Poaceae are the most economically important plant family, including staple foods from domesticated cereal crops such as maize, wheat, rice, oats, barley, and millet for people and as feed for meat-producing animals. They provide, through direct human consumption, just over one-half (51%) of all dietary energy; rice provides 20%, wheat supplies 20%, maize (corn) 5.5%, and other grains 6%. Some members of the Poaceae are used as building materials ( bamboo, thatch, and straw); oth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
