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Serpentine Aster
''Symphyotrichum depauperatum'' (formerly ''Aster depauperatus''), commonly known as serpentine aster or starved aster, is a rare species in the family Asteraceae adapted to serpentine barrens, an ecosystem with a high concentration of toxic metals in the soil. It has been found in Pennsylvania, Maryland, and on some diabase glades in North Carolina. It grows to and has white ray florets surrounding a center of yellow disk florets. Description ''Symphyotrichum depauperatum'' is a perennial, herbaceous plant that may reach up to tall, with 1–3 stems. The leaves are narrow and generally long. The plant produces numerous flower heads in branched arrays, each head with 7–14 white or, rarely, pink ray florets surrounding 7–17 yellow disk florets. File:Symphyotrichum depauperatum 50071438.jpg, A plant in flower File:Symphyotrichum depauperatum 67278234.jpg, Flowers File:Symphyotrichum depauperatum 619554.jpg, Growth habit Taxonomy Within the genus ''Symphyotrichum'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nottingham, Pennsylvania
Nottingham is an unincorporated community and census-designated place located in West Nottingham Township in Chester County, Pennsylvania. The community is located at the intersection of U.S. 1 and Pennsylvania Route 272 near the border with East Nottingham Township, a short distance north of the Maryland border. As of 2020, the CDP has a population 1,260. It is home to the 651 acre Nottingham County Park, a serpentine barrens listed as a National Natural Landmark. Herr's Snacks plant, founded in 1946, is also located in the community. The U.S. Post Office for Nottingham is located along Baltimore Pike The Baltimore Pike was an auto trail connecting Baltimore, Maryland, with Philadelphia, Pennsylvania. Today, parts of the road are signed as U.S. Route 1 (US 1), US 13, and a small portion of Pennsylvania Route 41 (PA 41). A section of the road .... Demographics References External links Unincorporated communities in Chester County, Pennsylvania Unincorporated co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbaceous Plant
Herbaceous plants are vascular plants that have no persistent woody stems above ground. This broad category of plants includes many perennials, and nearly all annuals and biennials. Definitions of "herb" and "herbaceous" The fourth edition of the ''Shorter Oxford English Dictionary'' defines "herb" as: #"A plant whose stem does not become woody and persistent (as in a tree or shrub) but remains soft and succulent, and dies (completely or down to the root) after flowering"; #"A (freq. aromatic) plant used for flavouring or scent, in medicine, etc.". (See: Herb) The same dictionary defines "herbaceous" as: #"Of the nature of a herb; esp. not forming a woody stem but dying down to the root each year"; #"BOTANY Resembling a leaf in colour or texture. Opp. scarious". Botanical sources differ from each other on the definition of "herb". For instance, the Hunt Institute for Botanical Documentation includes the condition "when persisting over more than one growing season, the parts o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Industrial Development
Industrialisation ( alternatively spelled industrialization) is the period of social and economic change that transforms a human group from an agrarian society into an industrial society. This involves an extensive re-organisation of an economy for the purpose of manufacturing. Historically industrialization is associated with increase of polluting industries heavily dependent on fossil fuels. With the increasing focus on sustainable development and green industrial policy practices, industrialization increasingly includes technological leapfrogging, with direct investment in more advanced, cleaner technologies. The reorganization of the economy has many unintended consequences both economically and socially. As industrial workers' incomes rise, markets for consumer goods and services of all kinds tend to expand and provide a further stimulus to industrial investment and economic growth. Moreover, family structures tend to shift as extended families tend to no longer live to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Housing Development
A housing estate (or sometimes housing complex or housing development) is a group of homes and other buildings built together as a single development. The exact form may vary from country to country. Popular throughout the United States and the United Kingdom, they are often areas of high-density, low-impact residences of single-family detached homes and often allow for separate ownership of each housing unit, for example through subdivision. In major Asian cities, such as Hong Kong, Kuala Lumpur, Shanghai, Shenzhen, Singapore, Seoul, Taipei, and Tokyo, an estate may range from detached houses to high-density tower blocks with or without commercial facilities; in Europe and America, these may take the form of town housing, high-rise housing projects, or the older-style rows of terraced houses associated with the Industrial Revolution, detached or semi-detached houses with small plots of land around them forming gardens, and are frequently without commercial facilities ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quarrying
A quarry is a type of open-pit mine in which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The operation of quarries is regulated in some jurisdictions to reduce their environmental impact. The word ''quarry'' can also include the underground quarrying for stone, such as Bath stone. Types of rock Types of rock extracted from quarries include: *Chalk *China clay *Cinder *Clay *Coal *Construction aggregate (sand and gravel) * Coquina *Diabase *Gabbro *Granite * Gritstone *Gypsum *Limestone *Marble *Ores *Phosphate rock *Quartz *Sandstone *Slate *Travertine Stone quarry Stone quarry is an outdated term for mining construction rocks (limestone, marble, granite, sandstone, etc.). There are open types (called quarries, or open-pit mines) and closed types ( mines and caves). For thousands of years, only hand tools had been used in quarries. In the 18th century, the use of drilling and blasting operations was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Threatened Species
Threatened species are any species (including animals, plants and fungi) which are vulnerable to endangerment in the near future. Species that are threatened are sometimes characterised by the population dynamics measure of ''critical depensation'', a mathematical measure of biomass related to population growth rate. This quantitative metric is one method of evaluating the degree of endangerment. IUCN definition The International Union for Conservation of Nature (IUCN) is the foremost authority on threatened species, and treats threatened species not as a single category, but as a group of three categories, depending on the degree to which they are threatened: *Vulnerable species *Endangered species * Critically endangered species Less-than-threatened categories are near threatened, least concern, and the no longer assigned category of conservation dependent. Species which have not been evaluated (NE), or do not have sufficient data ( data deficient) also are not considered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic
Endemism is the state of a species being found 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 be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flagship Species
In conservation biology, a flagship species is a species chosen to raise support for biodiversity conservation in a given place or social context. Definitions have varied, but they have tended to focus on the strategic goals and the socio-economic nature of the concept, to support the marketing of a conservation effort. The species need to be popular, to work as symbols or icons, and to stimulate people to provide money or support. Species selected since the idea was developed in 1980s include widely recognised and charismatic species like the black rhinoceros, the Bengal tiger, and the Asian elephant. Some species such as the Chesapeake blue crab and the Pemba flying fox, the former of which is locally significant to Northern America, have suited a cultural and social context. Utilizing a flagship species has limitations. It can skew management and conservation priorities, which may conflict. Stakeholders may be negatively affected if the flagship species is lost. The use of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lancaster County, Pennsylvania
Lancaster County (; Pennsylvania Dutch: Lengeschder Kaundi), sometimes nicknamed the Garden Spot of America or Pennsylvania Dutch Country, is a county in the Commonwealth of Pennsylvania. It is located in the south central part of Pennsylvania. As of the 2020 census, the population was 552,984. Its county seat is Lancaster. Lancaster County comprises the Lancaster, Pennsylvania metropolitan statistical area. Lancaster County is a tourist destination with its Amish community a major attraction. Contrary to popular belief, the word "Dutch" in "Pennsylvania Dutch" is not a mistranslation, but rather a corruption of the Pennsylvania German endonym ''Deitsch'', which means "Pennsylvania Dutch / German" or "German". Ultimately, the terms Deitsch, Dutch, Diets, and Deutsch are all cognates of the Proto-Germanic word meaning "popular" or "of the people". The continued use of "Dutch" instead of "German" was strengthened by the Pennsylvania Dutch in the 19th century as a way of distin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delaware County, Pennsylvania
Delaware County, colloquially referred to as Delco, is a County (United States), county in the Commonwealth (U.S. state), Commonwealth of Pennsylvania. With a population of 576,830 as of the 2020 census, it is the List of counties in Pennsylvania, fifth-most populous county in Pennsylvania and the List of counties in Pennsylvania, third=smallest in area. Delaware County is part of the Delaware Valley and borders Philadelphia, the List of United States cities by population, sixth most populous city in the nation as of 2020. The county was created on September 26, 1789, from part of Chester County, Pennsylvania, Chester County and named for the Delaware River. The county is adjacent to the consolidated city-county, city-county of Philadelphia County, Pennsylvania, Philadelphia and is included in the Philadelphia–Camden, New Jersey, Camden–Wilmington, Delaware, Wilmington, PA–New Jersey, NJ–Delaware, DE–Maryland, MD Metropolitan statistical area, metropoilitan stastical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chester County, Pennsylvania
Chester County (Pennsylvania Dutch language, Pennsylvania Dutch: ''Tscheschter Kaundi''), colloquially known as Chesco, is a County (United States), county in the Commonwealth (U.S. state), Commonwealth of Pennsylvania. It is located in the Delaware Valley region of the state. As of the 2020 United States census, 2020 census, the population was 534,413, increasing by 7.1% from 498,886 in 2010 United States census, 2010. The county seat and most populated municipality is West Chester, Pennsylvania, West Chester. Chester County was one of the three original Pennsylvania counties created by William Penn in 1682. It was named for Chester, England. Chester County is part of the Philadelphia-Camden, New Jersey, Camden-Wilmington, Delaware, Wilmington, PA-New Jersey, NJ-Delaware, DE-Maryland, MD Delaware Valley, Metropolitan Statistical Area. Eastern Chester County is home to many communities that comprise part of the Philadelphia Main Line western suburbs outside of Philadelphia, whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granville County, North Carolina
Granville County is a county located on the northern border of the U.S. state of North Carolina. As of the 2020 census, the population was 60,992. Its county seat is Oxford. Granville County encompasses Oxford, NC Micropolitan Statistical Area, which is also included in the Raleigh-Durham-Chapel Hill, NC Combined Statistical Area. The county has access to Kerr Lake and Falls Lake and is part of the Roanoke, Tar and Neuse River watersheds. History The county was formed by English colonists in 1746 from Edgecombe County. It was named for John Carteret, 2nd Earl Granville, who as heir to one of the eight original Lords Proprietors of the Province of Carolina, claimed one eighth of the land granted in the charter of 1665. The claim was established as consisting of approximately the northern half of North Carolina, and this territory came to be known as the Granville District, also known as Oxford. In 1752, parts of Granville, Bladen, and Johnston counties were combined to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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