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Bachman's Sparrow
Bachman's sparrow (''Peucaea aestivalis''), also known as the pinewoods sparrow or oakwoods sparrow, is a small American sparrow that is endemic to the southeastern United States. This species was named in honor of Reverend John Bachman. Adults have rufous brown upperparts and crown with gray and black streaking on the nape, back and primaries. The face is gray with a rufous brown eyestripe. It has a buff colored breast and whitish belly. These are mid-sized New World sparrows, measuring and weighing . Their breeding habitat is open pine forests. The domed nest is usually built on the ground near a clump of grass or a bush. Females lay three to five eggs. Bachman's sparrow is primarily a non-migratory resident, but it may retreat from some of the most northerly territories. The species is mainly a granivore, but it will also take some insects. This bird is considered near threatened by the IUCN, with habitat loss one of the major factors often cited in its decline. Habitat deg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hinrich Lichtenstein
Martin H[e]inrich Carl Lichtenstein (10 January 1780 – 2 September 1857) was a German physician, List of explorers, explorer, botanist and zoologist. He explored parts of southern Africa and collected natural history specimens extensively and many new species were described from his collections by European scientists. Biography Born in Hamburg, Lichtenstein was the son of Anton August Heinrich Lichtenstein, head of the Gelehrtenschule des Johanneums, Johanneum. His father had an interest in eastern languages and built up an extensive library. He took an interest in natural history and geography from an early age, and came into contact with Count Johann Centurius Hoffmannsegg, Johann Centurius von Hoffmannsegg in 1797 and began to help examine the Count's extensive collections of insects and birds. He then went to study medicine at University of Jena, Jena and University of Helmstedt, Helmstedt and qualified as a doctor on 26 April 1802. He then chose to travel and found work ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shortleaf Pine
The shortleaf pine or ''Pinus echinata'' is a species of coniferous tree endemic to the United States. The shortleaf pine is sometimes referred to as the "old field", "spruce", "rosemary", "yellow", "two-leaf" and "heart" pine. The common name "shortleaf pine" may refer to other species like loblolly pine (''Pinus taeda''), based on a custom in the Southeastern United States to only refer to pines as either "long-leaf" or "short-leaf". However, ''P. echinata'' can be distinguished from other pines by examining its short leaves and small cones. Description The tree is variable in form, sometimes straight, sometimes crooked, with an irregular crown. The tree reaches heights of . In areas that have optimal growing conditions, the height reached is between . The trunk diameter ranges between and averages between . The leaves are needle-like, in fascicles (bundles) of two and three mixed together, and from long. The cones are long, with thin scales with a transverse keel and a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pityopsis
''Pityopsis'' is a genus of North American plants in the tribe Astereae within the family Asteraceae. Species of ''Pityopsis'' are known by the common names silkgrass or golden asters or grass-leaved goldenasters .North Carolina Wildflowers, Shrubs, & Trees (2011-11-27) ; Species /ref> * '' Pityopsis aspera'' – Pineland silkgrass - LA [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aristida
''Aristida'' is a very nearly Cosmopolitan distribution, cosmopolitan genus of plants in the Poaceae, grass family. ''Aristida'' is distinguished by having three Awn (Botany), awns (bristles) on each lemma (botany), 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 wiregrass (other), wiregrasses, speargrass (other), speargrasses and needlegrass (other), needlegrasses. The name ''Aristida'' is derived from the Latin "wikt:arista#Latin, arista", meaning "awn". They are characteristic of semiarid grassland. The Wiregrass Region of North America is named for ''Aristida stricta, A. stricta''. Other locales where this genus is an important component of the ecosystem include the Carolina Bays, the sandhills (Carolina), sandhills of the Carolinas, and sandhill, elsewhere, Acacia aneura, Mulga scrub in Australia, and the xeric grasslands around Lake Tur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beyrich Threeawn
Beyrich Surname *Notable people with the surname include: * (1887–1961), German politician * Heinrich Ernst Beyrich Heinrich Ernst Beyrich (31 August 1815 – 9 July 1896) was a German palaeontologist. Life Born in Berlin, he was educated at the university in that city, and afterwards at Bonn, where he studied under Georg August Goldfuss and Johann Jakob N� ... (1815–1896), German paleontologist * Heinrich Karl Beyrich (1796–1834), German botanist Places * Barish; old spelling (by Guerin) of this village in Lebanon {{Surname ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbaceous Layer
In ecology, stratification 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 layer”. In the broa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Composition
Relative species abundance is a component of biodiversity and is a measure of how common or rare a species is relative to other species in a defined location or community.Hubbell, S. P. 2001. ''The unified neutral theory of biodiversity and biogeography''. Princeton University Press, Princeton, N.J. Relative abundance is the percent composition of an organism of a particular kind relative to the total number of organisms in the area. Relative species abundance (ecology), abundances tend to conform to specific patterns that are among the best-known and most-studied patterns in macroecology. Different populations in a community exist in relative proportions; this idea is known as relative abundance. Introduction Relative species abundance Relative species abundance and species richness describe key elements of biodiversity. Relative species abundance refers to how common or rare a species is relative to other species in a given location or community.McGill, B. J., Etienne R. S., Gra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schizachyrium
''Schizachyrium'' is a widespread genus of plants in the grass family. The name is derived from the Ancient Greek words (), meaning "to split," and (), meaning "chaff." It refers to either the glume or the toothed lemmas. In the United States, members of the genus are commonly known as bluestems. Species Species in the genus include: * '' Schizachyrium beckii'' Killeen - Bolivia * ''Schizachyrium bemarivense'' A.Camus - Madagascar * '' Schizachyrium brevifolium'' (Sw.) Nees ex Buse – Serillo dulce - widespread in tropics * '' Schizachyrium cirratum'' (Hack.) Wooton & Standl. - USA (AZ NM TX), Mexico, Venezuela, Colombia, Ecuador * '' Schizachyrium claudopus'' (Chiov.) Chiov - Tanzania, Zaïre, Zambia * '' Schizachyrium condensatum'' (Kunth) Nees – Colombian bluestem - West Indies, Latin America from central Mexico to Uruguay * '' Schizachyrium crinizonatum'' S.T.Blake - Australia * '' Schizachyrium cubense'' (Hack.) Nash - Cuba * '' Schizachyrium delavayi'' (Hack ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andropogon
''Andropogon'' (common names: beard grass, bluestem grass, broomsedge) is a widespread genus of plants in the grass family, native to much of Asia, Africa, and the Americas, as well as Southern Europe and various oceanic islands. Over 100 species have been described. Species * '' Andropogon abyssinicus'' * '' Andropogon aciculatus'' * '' Andropogon aequatoriensis'' * '' Andropogon amboinicus'' * '' Andropogon amethystinus'' * '' Andropogon appendiculatus'' * '' Andropogon arctatus'' * '' Andropogon benthamianus'' * '' Andropogon bentii'' * '' Andropogon bicornis'' * '' Andropogon brachystachyus'' * '' Andropogon campestris'' * '' Andropogon campii'' * '' Andropogon canaliculatus'' * '' Andropogon capillipes'' * '' Andropogon chinensis'' * '' Andropogon chrysostachyus'' * '' Andropogon consanguineus'' * '' Andropogon cordatus'' * '' Andropogon distachyos'' * '' Andropogon eucomus'' * '' Andropogon fastigiatus'' * '' Andropogon floridanus'' * '' Andropogon fragilis'' * '' Androp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red-cockaded Woodpecker
The red-cockaded woodpecker (''Leuconotopicus borealis'') is a woodpecker endemic to the southeastern United States. It is a threatened species under the Endangered Species Act of 1973. Description The red-cockaded woodpecker is small- to mid-sized species, being intermediate in size between North America's two most widespread woodpeckers (the downy and hairy woodpeckers). This species measures in length, spans across the wings and weighs . Among the standard measurements, the wing chord is , the tail is , the bill is and the tarsus is . Its back is barred with black and white horizontal stripes. The red-cockaded woodpecker's most distinguishing feature is a black cap and nape that encircle large white cheek patches. Rarely visible, except perhaps during the breeding season and periods of territorial defense, the male has a small red streak on each side of its black cap called a ''cockade'', hence its name. The species is listed as Near Threatened by the IUCN and as Threa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goose Bumps
Goose bumps, goosebumps or goose pimples are the bumps on a person's skin at the base of body hairs which may involuntarily develop when a person is Tickling, tickled, cold or experiencing strong emotions such as fear, euphoria or sexual arousal. The formation of goose bumps in humans under Stress (medicine), stress is considered by some to be a Vestigial response, vestigial reflex, though visible piloerection is associated with changes in skin temperature in humans. The reflex of producing goose bumps is known as piloerection or the pilomotor reflex, or, more traditionally, horripilation. It occurs in many mammals; a prominent example is porcupines, which raise their quills when threatened, or sea otters when they encounter sharks or other predators. Anatomy and biology Goose bumps are created when tiny muscles at the base of each hair, known as ''arrector pili muscles'', contract and pull the hair straight up. The reflex is started by the sympathetic nervous system, which i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agkistrodon Piscivorus
''Agkistrodon piscivorus'' is a species of venomous snake, a pit viper in the subfamily Crotalinae of the family Viperidae. It is one of the world's few semiaquatic vipers (along with the Florida cottonmouth), and is native to the Southeastern United States. As an adult, it is large and capable of delivering a painful and potentially fatal bite. When threatened, it may respond by coiling its body and displaying its fangs. Individuals may bite when feeling threatened or being handled in any way. It tends to be found in or near water, particularly in slow-moving and shallow lakes, streams, and marshes. It is a capable swimmer, and like several species of snakes, is known to occasionally enter bays and estuaries and swim between barrier islands and the mainland. Gloyd HK, Conant R (1990). ''Snakes of the ''Agkistrodon'' Complex: A Monographic Review''. Society for the Study of Amphibians and Reptiles. 614 pp. 52 plates. LCCN 89-50342. . The generic name is derived from the Gree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
