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Eryngium Cuneifolium
''Eryngium cuneifolium'' is a rare species of flowering plant in the carrot family known by the common names wedgeleaf eryngo, wedge-leaved button-snakeroot, and simply snakeroot. It is endemic to the state of Florida in the United States where it is known only from Highlands County.USFWS''Eryngium cuneifolium'' Five-year Review.July 2010. It is one of many rare species that can be found only on the Lake Wales Ridge, an area of high endemism.''Eryngium cuneifolium''. Center for Plant Conservation. Archibold Station. It was federally listed as an |
John Kunkel Small
John Kunkel Small (January 31, 1869 – January 20, 1938) was an American botanist. He studied plants in the southeastern United States and wrote a book about the deterioration of habitats in Florida. Early life and education Small was born on January 31, 1869, in Harrisburg, Pennsylvania, Harrisburg, Pennsylvania. He studied botany at Franklin & Marshall College, receiving his Bachelor's degree in 1892. Then he studied at Columbia University, where he earned a doctorate in philosophy in 1895 and a doctorate in science in 1912. Career After his first graduation in 1895, he became a special agent for the Georgia Geological Survey. Then, returning to Columbia University, he became the first Curator of Museums at the New York Botanical Garden, a post at which he served from 1898 until 1906. It was mainly at that time of his life when he issued several exsiccata, exsiccatae, among others the series ''Mosses of the Southern United States, distributed from the Herbarium of Columb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinus Edulis
''Pinus edulis'', the Colorado pinyon, two-needle piñon, pinyon pine, or simply piñon, is a pine in the pinyon pine group native to the Southwestern United States, used for its edible pine nuts. Description The piñon pine (''Pinus edulis'') is a small to medium size tree, reaching tall and with a trunk diameter of up to , rarely more. Its growth is "at an almost inconceivably slow rate" growing only 1.8 meters (6 ft) in one hundred years under good conditions. for an average growth of 18 millimeters (0.72 in) per year. The bark is irregularly furrowed and scaly. The leaves ('needles') are in pairs, moderately stout, long, and green, with stomata on both inner and outer surfaces but distinctly more on the inner surface forming a whitish band. The cones are globose, long and broad when closed, green at first, ripening yellow-buff when 18–20 months old, with only a small number of thick scales, with typically 5–10 fertile scales. The cones open to broad when mature, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germination
Germination is the process by which an organism grows from a seed or spore. The term is applied to the sprouting of a seedling from a seed of an angiosperm or gymnosperm, the growth of a sporeling from a spore, such as the spores of fungi, ferns, bacteria, and the growth of the pollen tube from the pollen grain of a seed plant. Seed plants Germination is usually the growth of a plant contained within a seed resulting in the formation of the seedling. It is also the process of reactivation of metabolic machinery of the seed resulting in the emergence of radicle and plumule. The seed of a vascular plant is a small package produced in a fruit or cone after the union of male and female reproductive cells. All fully developed seeds contain an embryo and, in most plant species some store of food reserves, wrapped in a seed coat. Dormant seeds are viable seeds that do not germinate because they require specific internal or environmental stimuli to resume growth. Und ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wildfire Suppression
Wildfire suppression is a range of firefighting tactics used to suppress wildfires. Firefighting efforts depend on many factors such as the available fuel, the local atmospheric conditions, the features of the terrain, and the size of the wildfire. Because of this wildfire suppression in wild land areas usually requires different techniques, equipment, and training from the more familiar structure fire fighting found in populated areas. Working in conjunction with specially designed aerial firefighting aircraft, fire engines, tools, firefighting foams, fire retardants, and using various firefighting techniques, wildfire-trained crews work to suppress flames, construct fire lines, and extinguish flames and areas of heat in order to protect resources and natural wilderness. Wildfire suppression also addresses the issues of the wildland–urban interface, where populated areas border with wild land areas. In the United States and other countries, aggressive wildfire suppression a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Management
Land management is the process of managing the land use, use and development of land resources. Those resources are used for a variety of purposes for example agriculture, forestry, water resource management, Human settlement, human settlements and tourism. One aim of land management is to prevent or reverse land degradation. Another aim is to ensure water security by increasing soil moisture availability, decreasing surface runoff, and decreasing soil erosion. Text was copied from this source, which is available under a ccorg:licenses/by/4.0/, Creative Commons Attribution 4.0 International License Unsustainable land managements leads to land being Overexploitation, over- or misused which in turn degrades the land, reduces productivity (ecology), productivity and disrupts natural equilibriums. Sustainable land management (SLM) is the set of practices and technologies that aim to integrate the management of land, water management, water, and other Environmental resource management, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat Fragmentation
Habitat fragmentation describes the emergence of discontinuities (fragmentation) in an organism's preferred environment (habitat), causing population fragmentation and ecosystem decay. Causes of habitat fragmentation include geological processes that slowly alter the layout of the physical environment (suspected of being one of the major causes of speciation), and human activity such as land conversion, which can alter the environment much faster and causes the extinction of many species. More specifically, habitat fragmentation is a process by which large and contiguous habitats get divided into smaller, isolated patches of habitats. Definition The term habitat fragmentation includes five discrete phenomena: * Reduction in the total area of the habitat * Decrease of the interior: edge ratio * Isolation of one habitat fragment from other areas of habitat * Breaking up of one patch of habitat into several smaller patches * Decrease in the average size of each patch of habit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citrus
''Citrus'' is a genus of flowering trees and shrubs in the family Rutaceae. Plants in the genus produce citrus fruits, including important crops such as oranges, mandarins, lemons, grapefruits, pomelos, and limes. ''Citrus'' is native to South Asia, East Asia, Southeast Asia, Melanesia, and Australia. Indigenous people in these areas have used and domesticated various species since ancient times. Its cultivation first spread into Micronesia and Polynesia through the Austronesian expansion (–1500 BCE). Later, it was spread to the Middle East and the Mediterranean () via the incense trade route, and from Europe to the Americas. Renowned for their highly fragrant aromas and complex flavor, citrus are among the most popular fruits in cultivation. With a propensity to hybridize between species, making their taxonomy complicated, there are numerous varieties encompassing a wide range of appearance and fruit flavors. Evolution Evolutionary history The large cit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agriculture
Agriculture encompasses crop and livestock production, aquaculture, and forestry for food and non-food products. Agriculture was a key factor in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in the cities. While humans started gathering grains at least 105,000 years ago, nascent farmers only began planting them around 11,500 years ago. Sheep, goats, pigs, and cattle were domesticated around 10,000 years ago. Plants were independently cultivated in at least 11 regions of the world. In the 20th century, industrial agriculture based on large-scale monocultures came to dominate agricultural output. , small farms produce about one-third of the world's food, but large farms are prevalent. The largest 1% of farms in the world are greater than and operate more than 70% of the world's farmland. Nearly 40% of agricultural land is found on farms larger than . However, five of every six farm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Local Extinction
Local extinction, also extirpation, is the termination of a species (or other taxon) in a chosen geographic area of study, though it still exists elsewhere. Local extinctions are contrasted with extinction, global extinctions. Local extinctions mark a change in the ecology of an area. It has sometimes been followed by a replacement of the species taken from other locations, such as with wolf reintroduction. Discussion Glacial period, Glaciation is one factor that leads to local extinction. This was the case during the Quaternary glaciation, Pleistocene glaciation event in North America. During this period, most of the native North American species of earthworm were killed in places covered by glaciation. This left them open for colonization by European earthworms brought over in soil from Europe. Species naturally become extinct from islands over time; this can be either local extinction if the species also occurs elsewhere, or in cases of endemism, island endemism, outright ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Wales Ridge National Wildlife Refuge
The Lake Wales Ridge National Wildlife Refuge is part of the United States National Wildlife Refuge (NWR) System, located in four separated areas on the Lake Wales Ridge east of US 27 between Davenport and Sebring in Florida. The 1,194 acre (4.8 km2) refuge was established in 1990, to protect a host of plants and animals. It is also the first to be designated primarily for the preservation of endangered plants, and is not open to the general public. It contains a high proportion of remaining Florida scrub habitat. It is administered as part of the Merritt Island National Wildlife Refuge. Management Since 2012 the Lake Wales Ridge NWR has been administered by the ''Everglades Headwaters National Wildlife Refuge Complex'', along with the Pelican Island NWR, Archie Carr NWR, and the Everglades Headwaters National Wildlife Refuge and Conservation Area. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opuntia Humifusa
''Opuntia humifusa'', common name, commonly known as the devil's-tongue, eastern prickly pear or Indian fig, is a cactus of the genus ''Opuntia'' present in parts of the eastern United States and northeastern Mexico. Description As is the case in other ''Opuntia'' species, the green stems of this low-growing Perennial plant, perennial cactus are flattened, and are formed of segments. glochid, Barbed bristles are found around the surfaces of the segments, and longer spines are sometimes present. The flowers are yellow to gold in color, and are found along the margins of mature segments. The flowers are waxy and sometimes have red centers. They measure across. This cactus blooms in the late spring. The juicy red or purple fruits measure from . As the fruit matures, it changes color from green to red, and often remains on the cactus until the following spring. There are 6 to 33 small, flat, light-colored seeds in each fruit. Taxonomy Some botanists treat this cactus as a variety ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sabal Etonia
''Sabal etonia'', commonly known as the scrub palmetto is a species of palm. It is endemic to Florida in the United States, where it is found in Florida sand pine scrub communities. Description ''Sabal etonia'' is a fan palm with a solitary stem that is usually subterranean, but is sometimes above ground and can usually grow to tall. Plants usually have four to seven costapalmate leaves, each with 25–50 leaflets. The inflorescences, which are branched with a bushy appearance, are shorter than the leaves and bear brownish-black fruit. The fruit are and in diameter. Taxonomy ''Sabal'' is placed in the subfamily Coryphoideae and the tribe The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide use of the term in English is in the discipline of anthropology. The definition is contested, in part due to conflict ... Sabaleae. The species was first described by American botanist Walter Tennyson ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
