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Sierra Nevada Lower Montane Forest
The Sierra Nevada lower montane forest is a plant community along a strip along the western and eastern edges of the Sierra Nevada mountain range in California. This zone is also known as a yellow pine forest. Moving southward, the elevation range of the lower montane forest grows. Its elevation range at the northern end of the Sierra is from . In the central Sierra, its elevation range is from . In the southern end of the Sierra, its range is from . The daily high temperature in the summer is , while the daily lows in winter are around . Annual precipitation depends on elevation: Yosemite Valley at gets a year. At the lower elevation of this forest, the hot, dry summers and cool, moist winters of the Mediterranean climate give rise to the lower montane forest zone. The accumulation of several feet of snow during the winter is not uncommon and can stay on the ground for several months. The diversity of tree species found in this zone make this a beautiful and interesting for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinus Ponderosa Yosemite 2
A pine is any conifer tree or shrub in the genus ''Pinus'' () of the family Pinaceae. ''Pinus'' is the sole genus in the subfamily Pinoideae. The World Flora Online created by the Royal Botanic Gardens, Kew and Missouri Botanical Garden accepts 187 species names of pines as current, together with more synonyms. The American Conifer Society (ACS) and the Royal Horticultural Society accept 121 species. Pines are commonly found in the Northern Hemisphere. ''Pine'' may also refer to the lumber derived from pine trees; it is one of the more extensively used types of lumber. The pine family is the largest conifer family and there are currently 818 named cultivars (or trinomials) recognized by the ACS. Description Pine trees are evergreen, coniferous resinous trees (or, rarely, shrubs) growing tall, with the majority of species reaching tall. The smallest are Siberian dwarf pine and Potosi pinyon, and the tallest is an tall ponderosa pine located in southern Oregon's Rogue Rive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giant Sequoia
''Sequoiadendron giganteum'' (giant sequoia; also known as giant redwood, Sierra redwood, Sierran redwood, California big tree, Wellingtonia or simply big treea nickname also used by John Muir) is the sole living species in the genus ''Sequoiadendron'', and one of three species of coniferous trees known as Sequoioideae, redwoods, classified in the family Cupressaceae in the subfamily Sequoioideae, together with ''Sequoia sempervirens'' (coast redwood) and ''Metasequoia glyptostroboides'' (dawn redwood). Giant sequoia specimens are the most massive trees on Earth. The common use of the name ''sequoia'' usually refers to ''Sequoiadendron giganteum'', which occurs naturally only in groves on the western slopes of the Sierra Nevada (U.S.), Sierra Nevada mountain range of California. The giant sequoia is listed as an endangered species by the IUCN, with fewer than 80,000 trees remaining. Since its last assessment as an endangered species in 2011, it was estimated that another 13–19% ... [...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 roam around and consume wild vegetations in order to convert the otherwise indigestible (by human gut) cellulose within grass and other forages into meat, milk, wool and other animal products, often on land unsuitable for arable farming. Farmers may employ many different strategies of grazing for optimum production: grazing may be continuous, seasonal, or 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, but studies show that the greatest benefit to biodiversity comes from removing grazing animals from the landsc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logging
Logging is the process of cutting, processing, and moving trees to a location for transport. It may include skidding, on-site processing, and loading of trees or logs onto trucks or skeleton cars. Logging is the beginning of a supply chain that provides raw material for many products societies worldwide use for housing, construction, energy, and consumer paper products. Logging systems are also used to manage forests, reduce the risk of wildfires, and restore ecosystem functions, though their efficiency for these purposes has been challenged. In forestry, the term logging is sometimes used narrowly to describe the logistics of moving wood from the stump to somewhere outside the forest, usually a sawmill or a lumber yard. In common usage, however, the term may cover a range of forestry or silviculture activities. Illegal logging refers to the harvesting, transportation, purchase, or sale of timber in violation of laws. The harvesting procedure itself may be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crown Closure
Crown closure, in forestry, is a measure of forest canopy coverage. Crown closure and crown cover are two slightly different measures of the forest canopy and that determine the amount of light able to penetrate to the forest floor. Crown closure, also known as canopy closure, is an integrated measure of the canopy "over a segment of the sky hemisphere above one point on the ground". Crown cover is the proportion of a stand covered by the crowns of live trees. A forest stand can have a crown cover of 100% and a crown closure less than 100%. Typical stands with 100% cover but low closure are coffee agroforestry stands, where overlapping parasol-shaped crowns ensure complete cover but still allow light to penetrate at an oblique angle to the forest floor. Basic concepts Crown closure helps predict volume, stand density, crown width, and crown competition factor. Crown closure is often determined using aerial photographs because ground evaluations become difficult to obtain. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secondary Growth
In botany, secondary growth is the growth that results from cell division in the cambia or lateral meristems and that causes the stems and roots to thicken, while primary growth is growth that occurs as a result of cell division at the tips of stems and roots, causing them to elongate, and gives rise to primary tissue. Secondary growth occurs in most seed plants, but monocots usually lack secondary growth. If they do have secondary growth, it differs from the typical pattern of other seed plants. The formation of secondary vascular tissues from the cambium is a characteristic feature of dicotyledons and gymnosperms. In certain monocots, the vascular tissues are also increased after the primary growth is completed but the cambium of these plants is of a different nature. In the living pteridophytes this feature is extremely rare, only occurring in '' Isoetes''. Lateral meristems In many vascular plants, secondary growth is the result of the activity of the two lateral m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Big Oak Flat
Groveland-Big Oak Flat is an unincorporated community and former census-designated place (CDP) in Tuolumne County, California, United States. The population was 3,388 at the 2000 census. This CDP included the communities of Groveland, Big Oak Flat and Pine Mountain Lake (PML). The CDP was abolished prior to the 2010 census, and Groveland and Pine Mountain Lake were made into separate CDPs. The town hosts an annual 49er Festival on the 3rd Saturday of September, hosted by the Yosemite Chamber of Commerce Groveland is the location of the Groveland Ranger District office of the Stanislaus National Forest. The Groveland Community Services District provides services, including fire protection, to the community . The Department of Forestry and Fire Protection, Tuolumne-Calaveras Ranger Unit, Battalion 16, has a Forest Fire Station west of Groveland on State Route 120. Geography and climate Groveland-Big Oak Flat is located at . Elevation is 867 m (2,846 ft). Acc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wawona, California
Wawona (formerly Big Tree Station, Clark's Station, Clarks Station, Wah-wo-nah, and Clark's Ranch) is a census-designated place in Mariposa County, California, United States. The population was 111 at the 2020 census. It is located entirely within Yosemite National Park, as it preceded the founding of the park as a national recreation area. The number of inhabitants increases dramatically during peak tourist seasons, due to the large number of rental cabins in the town. It is located at , north of Oakhurst and south of the center of Yosemite Valley, at an elevation of . The ZIP Code is 95389. The community is inside area code 209. History It was known to the local Native American Miwok in their language as ''Pallachun'' ("a good place to stay"). The origin of the word ''Wawona'' is not known. A popular story claims ''Wawō'na'' was the Miwok word for "big tree", or for "hoot of the owl", a bird considered the sequoia trees' spiritual guardian. Galen Clark, who helped ga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yosemite Valley
Yosemite Valley ( ; ''Yosemite'', Miwok for "killer") is a glacial valley in Yosemite National Park in the western Sierra Nevada mountains of Central California. The valley is about long and deep, surrounded by high granite summits such as Half Dome and El Capitan, and densely forested with pines. The valley is drained by the Merced River, and a multitude of streams and waterfalls flow into it, including Tenaya, Illilouette, Yosemite and Bridalveil Creeks. Yosemite Falls is the highest waterfall in North America and is a big attraction especially in the spring, when the water flow is at its peak. The valley is renowned for its natural environment and is regarded as the centerpiece of Yosemite National Park. The valley is the main attraction in the park for the majority of visitors and a bustling hub of activity during tourist season in the summer months. Most visitors enter the valley from roads to the west and pass through the Tunnel View entrance. Visitor facil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A Natural History Of California
Allan A. Schoenherr (February 6, 1937 – May 31, 2021) was a Californian author, ecologist, and naturalist. He is the author of the widely used reference book, '' A Natural History of California''. He received his PhD in zoology at Arizona State University and taught a long-running course on natural history of California University of California, Irvine. He is emeritus professor of ecology in Fullerton College. He taught classes for the Desert Institute of the Joshua Tree National Park Association. An accomplished nature photographer, he has provided the photographs to illustrate his books and he has received two awards for his images of California Gray Whales. A lover of the outdoors, he has traveled, hiked, and photographed all over the world. He has been the naturalist on many shipboard excursions including trips to Iceland, Greenland, Russia, Alaska, the Arctic and the Antarctic, the lagoons of Baja California, the South Pacific, and the Caribbean. As a biology professor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Black Bear
The American black bear (''Ursus americanus''), also called simply a black bear or sometimes a baribal, is a medium-sized bear endemic to North America. It is the continent's smallest and most widely distributed bear species. American black bears are omnivores, with their diets varying greatly depending on season and location. They typically live in largely forested areas, but will leave forests in search of food, and are sometimes attracted to human communities due to the immediate availability of food. The International Union for Conservation of Nature (IUCN) lists the American black bear as a least-concern species, due to its widespread distribution and a large population estimated to be twice that of all other bear species combined. Along with the brown bear (''Ursus arctos''), it is one of only two modern bear species not considered by the IUCN to be globally threatened with extinction. Taxonomy and evolution Despite living in North America, American black bears are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mule Deer
The mule deer (''Odocoileus hemionus'') is a deer indigenous to western North America; it is named for its ears, which are large like those of the mule. Two subspecies of mule deer are grouped into the black-tailed deer. Unlike the related white-tailed deer (''Odocoileus virginianus''), which is found throughout most of North America east of the Rocky Mountains and in the valleys of the Rocky Mountains from Idaho and Wyoming northward, mule deer are only found on the western Great Plains, in the Rocky Mountains, in the southwest United States, and on the west coast of North America. Mule deer have also been introduced to Argentina and Kauai, Hawaii. Taxonomy Mule deer can be divided into two main groups: the mule deer (''sensu stricto'') and the black-tailed deer. The first group includes all subspecies, except ''O. h. columbianus'' and '' O. h. sitkensis'', which are in the black-tailed deer group. The two main groups have been treated as separate species, but they hybridize, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
