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Candidula Spadae
''Xerogyra spadae'' is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Geomitridae. MolluscaBase eds. (2022). MolluscaBase. Xerogyra spadae (Calcara, 1845). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1308889 on 2022-07-28 The specific name ''spadae'', "Spada's", Pietro Calcara commemorated Giovanni Jacopo Spada (1680–1774), an Italian naturalist and pioneering geologist of Verona. Distribution ''Candidula spadae'' is native to Central Italy. The species in sparsely distributed. It is found in the central Apennines. However, the IUCN asserts that the species is also found in extension to Gargano. It is found in the Sibillini Mountains, including Monte Vettore, and then southward to the Monti Reatini, the Gran Sasso d'Italia, and the Monti della Meta. Description The shell of ''Xerogyra spadae'' is pale white in color. Often, there are narrow light brownish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pietro Calcara
Pietro is an Italian masculine given name. Notable people with the name include: People * Pietro I Candiano (c. 842–887), briefly the 16th Doge of Venice * Pietro Tribuno (died 912), 17th Doge of Venice, from 887 to his death * Pietro II Candiano (c. 872–939), 19th Doge of Venice, son of Pietro I A–E * Pietro Accolti (1455–1532), Italian Roman Catholic cardinal * Pietro Aldobrandini (1571–1621), Italian cardinal and patron of the arts * Pietro Anastasi (1948–2020), Italian former footballer * Pietro di Antonio Dei, birth name of Bartolomeo della Gatta (1448–1502), Florentine painter, illuminator and architect * Pietro Aretino (1492–1556), Italian author, playwright, poet, satirist and blackmailer * Pietro Auletta (1698–1771), Italian composer known mainly for his operas * Pietro Baracchi (1851–1926), Italian-born astronomer * Pietro Bellotti (1625–1700), Italian Baroque painter * Pietro Belluschi (1899–1994), Italian architect * Pietro Bembo (1470–1547 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gran Sasso D'Italia
Gran Sasso d'Italia (; ) is a massif in the Apennine Mountains of Italy. Its highest peak, Corno Grande (2,912 metres), is the highest mountain in the Apennines, and the second-highest mountain in Italy outside the Alps. The mountain lies within Gran Sasso e Monti della Laga National Park. Geography The three main summits of the Gran Sasso are Corno Grande, which at is the highest peak in the Apennines, nearby ''Corno Piccolo'', and ''Pizzo d'Intermesoli'', which is separated from the other two peaks by Val Maone, a deep valley. Corno Grande and Corno Piccolo's ash coloration come from their limestone and dolomite composition. The peaks are snow-covered for much of the year though the snow cover appears to be less each decade. Corno Piccolo is referred to as, "The Sleeping Giant". This is due to the appearance of a profile of a reclined face. This view of Corno Piccolo is evident when viewing the mountain from Pietracamela, a small town near Prati di Tivo, on the north side o ... [...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 landscape. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tourism In Italy
Tourism in Italy is one of the Economy of Italy, economic sectors of the country. With 65 million tourists per year (2019) according to National Institute of Statistics (Italy), ISTAT, Italy is the World Tourism rankings, fifth most visited country in international tourism arrivals, but the second after Spain in terms of nights spent in hotel, with 220,7 million foreign visitor nights spent and a total of 436,7 million nights. According to 2018 estimates by the Bank of Italy, the tourism sector directly generates more than five percent of the national GDP (13 percent when also considering the indirectly generated GDP) and represents over six percent of the employed. People have visited Italy for centuries, yet the first to visit the peninsula for tourist reasons were aristocrats during the Grand Tour, beginning in the 17th century, and flourishing in the 18th and the 19th century. This was a period in which European aristocrats, many of whom were British and French, visite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subalpine Zone
Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures fall as elevation increases, causing the ecosystem to stratify. This stratification is a crucial factor in shaping plant community, biodiversity, metabolic processes and ecosystem dynamics for montane ecosystems. Dense montane forests are common at moderate elevations, due to moderate temperatures and high rainfall. At higher elevations, the climate is harsher, with lower temperatures and higher winds, preventing the growth of trees and causing the plant community to transition to montane grasslands, shrublands or alpine tundra. Due to the unique climate conditions of montane ecosystems, they contain increased numbers of endemic species. Montane ecosystems also exhibit variation in ecosystem services, which include carbon storage and water supply. Life zones As elevation increases, the climate becomes cooler, due to a decrease in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpine Tundra
Alpine tundra is a type of natural region or biome that does not contain trees because it is at high elevation, with an associated alpine climate, harsh climate. As the latitude of a location approaches the poles, the threshold elevation for alpine tundra gets lower until it reaches sea level, and alpine tundra merges with tundra#Arctic tundra, polar tundra. The high elevation causes an adverse climate, which is too cold and windy to support tree growth. Alpine tundra ecotone, transitions to sub-alpine forests below the tree line; stunted forests occurring at the forest-tundra ecotone are known as ''Krummholz''. With increasing elevation it ends at the snow line where snow and ice persist through summer. Alpine tundra occurs in mountains worldwide. The flora of the alpine tundra is characterized by dwarf shrubs close to the ground. The cold climate of the alpine tundra is caused by adiabatic cooling of air, and is similar to polar climate. Geography Alpine tundra occurs at hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grassland
A grassland is an area where the vegetation is dominated by grasses (Poaceae). However, sedge (Cyperaceae) and rush (Juncaceae) can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur naturally on all continents except Antarctica and are found in most ecoregions of the Earth. Furthermore, grasslands are one of the largest biomes on earth and dominate the landscape worldwide. There are different types of grasslands: natural grasslands, semi-natural grasslands, and agricultural grasslands. They cover 31–69% of the Earth's land area. Definitions Included among the variety of definitions for grasslands are: * "...any plant community, including harvested forages, in which grasses and/or legumes make up the dominant vegetation." * "...terrestrial ecosystems dominated by herbaceous and shrub vegetation, and maintained by fire, grazing, drought and/or freezing temperatures." (Pilot Assessment of Global Ecosystems, 2000) * "A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xerogyra Spadae 3views
''Xerogyra'' is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Geomitridae. The genus is distributed in the Italian Peninsula. ''Xerogyra'' species were within the genus ''Candidula'' until a molecular phylogeny revealed the polyphyly of ''Candidula'' and, the genus ''Xerogyra'' Monterosato, 1892 was recovered. Species Species within the genus ''Xeroplexa'' include: * ''Xerogyra fiorii'' (Alzona & Alzona Bisacchi, 1938) * ''Xerogyra grovesiana'' (Paulucci, 1881) * ''Xerogyra spadae ''Xerogyra spadae'' is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Geomitridae. MolluscaBase eds. (2022). MolluscaBase. Xerogyra spadae (Calcara, 1845). Accessed through: World Register of Mar ...'' (Calcara, 1845) References * Kobelt, W. (1892). Literaturbericht. Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft, 24 (7/8): 149-152. Frankfurt am Main * Bank, R. A. (2017 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Umbilicus (mollusc)
The umbilicus of a shell is the axially aligned, hollow cone-shaped space within the whorls of a coiled mollusc shell. The term umbilicus is often used in descriptions of gastropod shells, i.e. it is a feature present on the ventral (or under) side of many (but not all) snail shells, including some species of sea snails, land snails, and freshwater snails. The word is also applied to the depressed central area on the planispiral coiled shells of ''Nautilus'' species and fossil ammonites. (These are not gastropods, but shelled cephalopods.) In gastropods The spirally coiled whorls of gastropod shells frequently connect to each other by their inner sides, during the natural course of its formation. This results in a more or less solid central axial pillar, known as the columella. The more intimate the contact between the concave side of the whorls is, the more solid the columella becomes. On the other hand, if this connection is less intense, a hollow space inside the whorls may re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lip (gastropod)
In the shell of gastropod mollusks (a snail shell), the lip is the free margin of the peristome (synonym: peritreme) or aperture (the opening) of the gastropod shell. In dextral (right-handed) shells (most snail shells are right-handed), the right side or outer side of the aperture is known as the outer lip (''labrum''). The left side of the aperture is known as the inner lip or columellar lip (''labium'') if there is a pronounced lip there. In those species where there is no pronounced lip, the part of the body whorl that adjoins the aperture is known as the parietal wall. The outer lip is usually thin and sharp in immature shells, and in some adults (e.g. the land snails ''Helicella'' and '' Bulimulus''). However, in some other land snails and in many marine species the outer lip is ''thickened'' (also called ''callused''), or ''reflected'' (turned outwards). In some other marine species it is curled inwards (''inflected''), as in the cowries such as ''Cypraea''. It can also be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aperture (mollusc)
The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where the head-foot part of the body of the animal emerges for locomotion, feeding, etc. The term ''aperture'' is used for the main opening in gastropod shells, scaphopod shells, and also for ''Nautilus'' and ammonite shells. The word is not used to describe bivalve shells, where a natural opening between the two shell valves in the closed position is usually called a ''gape''. Scaphopod shells are tubular, and thus they have two openings: a main anterior aperture and a smaller posterior aperture. As well as the aperture, some gastropod shells have additional openings in their shells for respiration; this is the case in some Fissurellidae (keyhole limpets) where the central smaller opening at the apex of the shell is called an orifice, and in the Haliotidae (abalones) where the row of respiratory openings in the shell are also called orifices. In gastropods In some prosobranch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whorl (mollusc)
A whorl is a single, complete 360° revolution or turn in the spiral growth of a mollusc shell. A spiral configuration of the shell is found in numerous gastropods, but it is also found in shelled cephalopods including ''Nautilus'', ''Spirula'' and the large extinct subclass of cephalopods known as the ammonites. A spiral shell can be visualized as consisting of a long conical tube, the growth of which is coiled into an overall helical or planispiral shape, for reasons of both strength and compactness. The number of whorls which exist in an adult shell of a particular species depends on mathematical factors in the geometric growth, as described in D'Arcy Wentworth Thompson's classic 1917 book ''On Growth and Form'', and by David Raup. The main factor is how rapidly the conical tube expands (or flares-out) over time. When the rate of expansion is low, such that each subsequent whorl is not that much wider than the previous one, then the adult shell has numerous whorls. When the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
