|
Southeastern Conifer Forests
The Southeastern conifer forests are a temperate coniferous forest ecoregion of the southeastern United States. It is the largest conifer forest ecoregion east of the Mississippi River. It is also the southernmost instance of temperate coniferous forest within the Nearctic realm. Climate This ecoregion has a humid subtropical climate with significant precipitation year-round. Plant communities Historic vegetation was dominated by open woodlands of longleaf pine (''Pinus palustris'') with an understory of wiregrass (''Aristida stricta''). Other natural communities include to pine savannas, flatwoods (pine forests with woody understories), and xeric hardwood forests. Upland longleaf pine woodland These are woodlands dominated by longleaf pine (''Pinus palustris'') and subject to frequent fires. The Atlantic coastal plain upland longleaf pine woodlands occur on uplands and on the higher parts of upland-wetland mosaics, while the east Gulf coastal plain interior upland longleaf p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louisiana
Louisiana , group=pronunciation (French: ''La Louisiane'') is a state in the Deep South and South Central regions of the United States. It is the 20th-smallest by area and the 25th most populous of the 50 U.S. states. Louisiana is bordered by the state of Texas to the west, Arkansas to the north, Mississippi to the east, and the Gulf of Mexico to the south. A large part of its eastern boundary is demarcated by the Mississippi River. Louisiana is the only U.S. state with political subdivisions termed parishes, which are equivalent to counties, making it one of only two U.S. states not subdivided into counties (the other being Alaska and its boroughs). The state's capital is Baton Rouge, and its largest city is New Orleans, with a population of roughly 383,000 people. Some Louisiana urban environments have a multicultural, multilingual heritage, being so strongly influenced by a mixture of 18th century Louisiana French, Dominican Creole, Spanish, French Canadian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florida Longleaf Pine Sandhill
The Florida longleaf pine sandhill is a forest system found on sandhills in the coastal plains of northern Florida, ranging from the panhandle to the central peninsula. Particular examples can be found in Ocala National Forest, Withlacoochee State Forest, Mike Roess Gold Head Branch State Park, and Eglin Air Force Base. These forests consist of stands of longleaf pine (''Pinus palustris'') on very well-drained, sandy hills. The stands are maintained by frequent fires. Turkey oak (''Quercus laevis''), myrtle oak (''Quercus myrtifolia ''Quercus myrtifolia'', the myrtle oak, is a North American species of oak. It is native to the southeastern United States (Mississippi, Alabama, Florida, Georgia, South Carolina). It is often found in coastal areas on sandy soils. It is an eve ...''), and gopher apple ('' Licania michauxii'') are common in the understory; wiregrass ('' Aristida beyrichiana'') makes up the ground layer. References {{reflist See also * Atlantic coastal plain upland ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aristida Beyrichiana
''Aristida'' is a very nearly cosmopolitan genus of plants in the grass family. ''Aristida'' is distinguished by having three awns (bristles) on each lemma of each floret. The genus includes about 300 species found worldwide, often in arid warm regions. This genus is among those colloquially called three-awns wiregrasses, speargrasses and needlegrasses. The name ''Aristida'' is derived from the Latin " arista", meaning "awn". They are characteristic of semiarid grassland. The Wiregrass Region of North America is named for '' A. stricta''. Other locales where this genus is an important component of the ecosystem include the Carolina Bays, the sandhills of the Carolinas, and elsewhere, Mulga scrub in Australia, and the xeric grasslands around Lake Turkana in Africa. Local increases in the abundance of wiregrasses is a good indicator of overgrazing, as livestock avoid them. Description ''Aristida'' stems are ascending to erect, with both basal and cauline leaves. The leaves ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbaceous Layer
Stratification in the field of ecology refers to the vertical layering of a habitat; the arrangement of vegetation in layers. It classifies the layers (sing. ''stratum'', pl. ''strata'') of vegetation largely according to the different heights to which their plants grow. The individual layers are inhabited by different animal and plant communities (stratozones). Vertical structure in terrestrial plant habitats The following layers are generally distinguished: forest floor (root and moss layers), herb, shrub, understory and canopy layers. These vegetation layers are primarily determined by the height of their individual plants, the different elements may however have a range of heights. The actual layer is characterised by the height range in which the vast majority of photosynthetic organs (predominantly leaves) are found. Taller species will have part of their shoot system in the underlying layers. In addition to the above-ground stratification there is also a “root laye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Incana
''Quercus incana'' is a species of oak known by the common names bluejack oak, upland willow oak, sandjack oak, and cinnamon oak. It is native to the Atlantic and Gulf coastal plains of the United States, from Virginia around Florida to Texas and inland to Oklahoma and Arkansas. Description ''Quercus incana'' is a tree growing to about 10 meters (33 feet) in height, with a maximum height around . The "national champion bluejack" was a specimen from Texas that was 15.5 m (51 ft) tall and 2.1 m (7 ft) in circumference, and had a crown spread of 17 m (56 ft). The trunk is short and the crooked branches form an open, irregular crown. The platy bark is dark brown or black. The leaves are generally oval and up to 10 centimeters long by 3.5 cm wide. They are glossy green on top and woolly-haired underneath. The acorn is up to 1.7 cm long by 1.6 cm wide, not counting the cap. The oak reproduces by seed and by resprouting from the rootcro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Laevis
''Quercus laevis'', the turkey oak, is a member of the red oak group of oaks. It is native to the southeastern United States. The name turkey oak derives from the resemblance of the leaves to a turkey's foot. A Turkish and southern European species '' Quercus cerris'' is also commonly referred to as Turkey oak, so ''Quercus laevis'' is sometimes referred to as American turkey oak to distinguish it from the European species. Description ''Quercus laevis'' is a small tree, sometimes shrubby, typically only tall, though occasionally reaching . The leaves are variable in size, mostly long but occasionally just or as much as long. They have 3–7 slender lobes, deeply incised between the lobes, each lobe with 1–3 bristle teeth at the tip. The leaves turn red in Autumn. The acorns are about long, and, like other red oaks, take 18 months to mature. Distribution and habitat Turkey oak occurs on the coastal plain from Virginia south to central Florida, and west to southea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Gulf Coastal Plain Interior Upland Longleaf Pine Woodland
East or Orient is one of the four cardinal directions or points of the compass. It is the opposite direction from west and is the direction from which the Sun rises on the Earth. Etymology As in other languages, the word is formed from the fact that east is the direction where the Sun rises: ''east'' comes from Middle English ''est'', from Old English ''ēast'', which itself comes from the Proto-Germanic *''aus-to-'' or *''austra-'' "east, toward the sunrise", from Proto-Indo-European *aus- "to shine," or "dawn", cognate with Old High German ''*ōstar'' "to the east", Latin ''aurora'' 'dawn', and Greek ''ēōs'' 'dawn, east'. Examples of the same formation in other languages include Latin oriens 'east, sunrise' from orior 'to rise, to originate', Greek ανατολή anatolé 'east' from ἀνατέλλω 'to rise' and Hebrew מִזְרָח mizraḥ 'east' from זָרַח zaraḥ 'to rise, to shine'. '' Ēostre'', a Germanic goddess of dawn, might have been a personification ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic Coastal Plain Upland Longleaf Pine Woodland
The Atlantic coastal plain upland longleaf pine woodland is plant community found on the southern Atlantic coastal plain, in the states of southern Virginia, North Carolina, South Carolina, Georgia and northeastern Florida. These woodlands are dominated by longleaf pine (''Pinus palustris'') and occur on uplands and on the higher parts of upland-wetland mosaics. They are subject to frequent fires. Soils are well- to excessively drained. Scrub oaks such as turkey oak (''Quercus laevis'') and bluejack oak (''Quercus incana'') are often in the understory. The herbaceous layer is dominated by grasses, particularly wiregrass: (''Aristida stricta'') in the north and (''Aristida beyrichiana'') in the south. These woodlands may once have been the most widespread plant community within their range. References {{reflist See also *Florida longleaf pine sandhill The Florida longleaf pine sandhill is a forest system found on sandhills in the coastal plains of northern Florida, ranging from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xeric
Deserts and xeric shrublands are a biome defined by the World Wide Fund for Nature. Deserts and xeric (ancient Greek xērós, “dry") shrublands form the largest terrestrial biome, covering 19% of Earth's land surface area. Ecoregions in this habitat type vary greatly in the amount of annual rainfall they receive, usually less than annually except in the margins. Generally evaporation exceeds rainfall in these ecoregions. Temperature variability is also diverse in these lands. Many deserts, such as the Sahara, are hot year-round, but others, such as East Asia's Gobi, become quite cold in winter. Temperature extremes are a characteristic of most deserts. High daytime temperatures give way to cold nights because there is no insulation provided by humidity and cloud cover. The diversity of climatic conditions, though quite harsh, supports a rich array of habitats. Many of these habitats are ephemeral in nature, reflecting the paucity and seasonality of available water. Woody-stemm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flatwoods
Flatwoods, pineywoods, pine savannas and longleaf pine-wiregrass ecosystem are terms that refer to an ecological community in the southeastern coastal plain of North America. Flatwoods are an ecosystem maintained by wildfire or prescribed fire and are dominated by longleaf pine (''Pinus palustris''), and slash pine (''Pinus elliotii'') in the tree canopy and saw palmetto (''Serenoa repens''), gallberry (''Ilex glabra'') and other flammable evergreen shrubs in the understory, along with a high diversity of herb species.Platt, W.J. 1999. Southeastern pine savannas. In: Anderson, R.C., Fralish, J.S. & Baskin, J. (eds.) The savanna, barren, and rock outcrop communities of North America, pp. 23- 51. Cambridge University Press, Cambridge, UK.Peet, R.K. & Allard, D.J. 1993. Longleaf pine vegetation of the southern Atlantic and eastern Gulf Coast regions: a preliminary classification. In: Hermann, S.M. (ed.) The longleaf pine ecosystem: ecology, restoration and management, pp. 45-81. It was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aristida Stricta
''Aristida stricta'' is a warm-season grass, native to North America, that dominates understory vegetation in sandhills and flatwoods coastal plain ecosystems of the Carolinas in the Southeastern United States. It is known as wiregrass (due to its texture) and pineland three-awn grass. Its common name, wiregrass, gave rise to the naming of the Wiregrass Region The Wiregrass region or Wiregrass country is an area of the Southern United States encompassing parts of southern Georgia, southeastern Alabama, and the Florida Panhandle. The region is named for the native ''Aristida stricta'', commonly known a ... in which it is located. This is a fast-growing species that regenerates quickly after fires. The plant depends on regular summer burning in order to stimulate flowering and seed production. References * stricta Flora of North Carolina Flora of South Carolina Flora of Florida Flora of Georgia (U.S. state) {{Poaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
