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50-518: The garden was established in 1990 within the castle's park, and is operated by the government of Autonomous Region Aosta Valley . The garden focuses on the aesthetic appearance of its species which are planted in rocky beds. Species include Aquilegia alpina , Arnica montana , Epilobium angustifolium , Gentiana , Leontopodium alpinum , Lilium martagon , Rhododendron ferrugineum , Saxifraga , Sempervivum arachnoideum , Sempervivum montanum , and Trollius europaeus . The park

100-537: A temperate grassland , restricting southern tundra to coastal Antarctica and its islands. The flora and fauna of Antarctica and the Antarctic Islands (south of 60° south latitude) are protected by the Antarctic Treaty . Alpine tundra does not contain trees because the climate and soils at high altitude block tree growth. The cold climate of the alpine tundra is caused by the low air temperatures, and

150-621: A dark bread made with rye, and honey. Notable dishes include Carbonnade , similar to the Belgian dish of the same name consisting of salt-cured beef cooked with onions and red wine served with polenta; breaded veal cutlets called costolette ; teuteuns , salt-cured cow's udder that is cooked and sliced; and steak à la valdôtaine , a steak with croûtons , ham and melted cheese. Aosta Valley has many small and picturesque villages, three of them have been selected by I Borghi più belli d'Italia (English: The most beautiful Villages of Italy ),

200-750: A local climate in which at least one month has an average temperature high enough to melt snow (0 °C (32 °F)), but no month with an average temperature in excess of 10 °C (50 °F). The cold limit generally meets the EF climates of permanent ice and snows ; the warm-summer limit generally corresponds with the poleward or altitudinal limit of trees, where they grade into the subarctic climates designated Dfd , Dwd and Dsd (extreme winters as in parts of Siberia ), Dfc typical in Alaska, Canada, mountain areas of Scandinavia , European Russia , and Western Siberia (cold winters with months of freezing). Despite

250-611: A low summer average but mild winters, sometimes above −3 °C (27 °F), especially near lakes, or a more severe cold continental climate, with a very low winter average. Temperature averages in Plateau Rosa , at 3,400 m (11,200 ft) high, are −11.6 °C (11.1 °F) in January and 1.4 °C (34.5 °F) in July. It is the coldest place in Italy where the climate is verifiable. In

300-615: A non-profit private association of small Italian towns of strong historical and artistic interest, that was founded on the initiative of the Tourism Council of the National Association of Italian Municipalities. Notable wines include two white wines from Morgex ( Blanc de Morgex et de La Salle and Chaudelune ), a red wine blend from Arvier ( Enfer d'Arvier ) and one from Gamay . Tundra In physical geography , tundra ( / ˈ t ʌ n d r ə , ˈ t ʊ n -/ )

350-426: Is Mont Blanc (4,810 m or 15,780 ft). This makes it the highest region in Italy, according to the list of Italian regions by highest point . The valleys, usually above 1,600 m (5,200 ft), annually have a cold continental climate ( Dfc ). In this climate, the snow season is very long, as long as 8 or 9 months at the highest points. During the summer, mist occurs almost every day. These areas are

400-486: Is a mountainous autonomous region in northwestern Italy . It is bordered by Auvergne-Rhône-Alpes , France , to the west; by Valais , Switzerland , to the north; and by Piedmont , Italy, to the south and east. The regional capital is Aosta . Covering an area of 3,263 km (1,260 sq mi) and with a population of about 128,000, it is the smallest, least populous, and least densely populated region of Italy. The province of Aosta having been dissolved in 1945,

450-479: Is a risk of wildfire, such as the 1,039 km (401 sq mi) of tundra which burned in 2007 on the north slope of the Brooks Range in Alaska. Such events may both result from and contribute to global warming. Carbon emissions from permafrost thaw contribute to the same warming which facilitates the thaw, making it a positive climate change feedback . The warming also intensifies Arctic water cycle , and

500-409: Is a type of biome where tree growth is hindered by frigid temperatures and short growing seasons. There are three regions and associated types of tundra: Arctic tundra, alpine tundra , and Antarctic tundra. Tundra vegetation is composed of dwarf shrubs , sedges , grasses , mosses , and lichens . Scattered trees grow in some tundra regions. The ecotone (or ecological boundary region) between

550-507: Is also officially recognized. Italian is spoken as a mother tongue by 77.29% of the population, Valdôtain by 17.91%, and French by 1.25%. In 2009, reportedly 50.53% of the population could speak all three languages. The Aosta Valley is an Alpine valley which, with its tributary valleys, includes the Italian slopes of Mont Blanc , Monte Rosa , Gran Paradiso and the Matterhorn ; its highest peak

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600-449: Is characterized by plants that grow close to the ground, including perennial grasses , sedges , forbs , cushion plants , mosses , and lichens . The flora is adapted to the harsh conditions of the alpine environment, which include low temperatures, dryness, ultraviolet radiation, and a short growing season. Tundra climates ordinarily fit the Köppen climate classification ET , signifying

650-561: Is conducted evenly in French and Italian, so that anyone who has gone to school in the Aosta Valley can speak both languages to at least a medium-high level. Legal decree No.365 of 11 November 1946 (art.2) states that it is mandatory to know both Italian and French to teach in Aosta Valley's schools. According to Aosta Valley's autonomous status (art.39), the same quantity of hours of French and Italian teaching must be held. The decree No.861 of

700-771: Is home to several peoples who are mostly nomadic reindeer herders, such as the Nganasan and Nenets in the permafrost area (and the Sami in Sápmi ). Arctic tundra contains areas of stark landscape and is frozen for much of the year. The soil there is frozen from 25 to 90 cm (10 to 35 in) down, making it impossible for trees to grow there. Instead, bare and sometimes rocky land can only support certain kinds of Arctic vegetation , low-growing plants such as moss, heath ( Ericaceae varieties such as crowberry and black bearberry ), and lichen . There are two main seasons, winter and summer, in

750-630: Is light, evaporation is also relatively minimal. During the summer, the permafrost thaws just enough to let plants grow and reproduce, but because the ground below this is frozen, the water cannot sink any lower, so the water forms the lakes and marshes found during the summer months. There is a natural pattern of accumulation of fuel and wildfire which varies depending on the nature of vegetation and terrain. Research in Alaska has shown fire-event return intervals (FRIs) that typically vary from 150 to 200 years, with dryer lowland areas burning more frequently than wetter highland areas. The biodiversity of tundra

800-694: Is low: 1,700 species of vascular plants and only 48 species of land mammals can be found, although millions of birds migrate there each year for the marshes. There are also a few fish species. There are few species with large populations. Notable plants in the Arctic tundra include blueberry ( Vaccinium uliginosum ), crowberry ( Empetrum nigrum ), reindeer lichen ( Cladonia rangiferina ), lingonberry ( Vaccinium vitis-idaea ), and Labrador tea ( Rhododendron groenlandicum ). Notable animals include reindeer (caribou), musk ox , Arctic hare , Arctic fox , snowy owl , ptarmigan , northern red-backed voles , lemmings ,

850-415: Is not divided into provinces. Nevertheless, it is still divided into 74 comunes namely: The population density of Aosta Valley is by far the lowest of the Italian regions. In 2008, 38.9 inhabitants per km were registered in the region, whereas the average national figure was 198.8, though the region has extensive uninhabitable areas of mountain and glacier, with a substantial part of the population living in

900-404: Is similar to polar climate . Alpine tundra is generally better drained than arctic soils. Alpine tundra transitions to subalpine forests below the tree line; stunted forests occurring at the forest-tundra ecotone (the treeline ) are known as Krummholz . Alpine tundra can be affected by woody plant encroachment . Alpine tundra occurs in mountains worldwide. The flora of the alpine tundra

950-541: Is the highest growth among the Italian regions. With a negative natural population growth, this is due exclusively to positive net migration. Between 2001 and 2011, the population of Aosta Valley grew by a further 7.07%. As of 2006 , the Italian National Institute of Statistics (ISTAT) estimated that 4,976 foreign-born immigrants live in Aosta Valley, equal to 4.0% of the total regional population. The Valdôtain population and their language dialects have been

1000-625: The Franconian line and built himself a commanding fortification at Bard . Saint Anselm of Canterbury was born in Aosta in 1033 or 1034. The region was divided among strongly fortified castles, and in 1191, Thomas I of Savoy found it necessary to grant to the communes a Charte des franchises ("Charter of Liberties") which preserved autonomy—rights that were fiercely defended until 1770, when they were revoked to tie Aosta more closely to Piedmont , but which were again demanded during post-Napoleonic times. In

1050-569: The Kerguelen Islands . Most of Antarctica is too cold and dry to support vegetation, and most of the continent is covered by ice fields or cold deserts. However, some portions of the continent, particularly the Antarctic Peninsula , have areas of rocky soil that support plant life. The flora presently consists of around 300–400 species of lichens, 100 mosses, 25 liverworts , and around 700 terrestrial and aquatic algae species, which live on

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1100-651: The Secondary education final exam , similar to the first test (in Italian). The regional language , known as patoué valdotèn or simply patoué ( patois valdôtain in French), is a dialectal variety of Franco-Provençal . It is spoken as a native and second language by 68,000 residents, or about 58% of the population according to a sociolinguistic survey carried out by the Fondation Émile Chanoux in 2001. The survey found that

1150-468: The mosquito , and even polar bears near the ocean. Tundra is largely devoid of poikilotherms such as frogs or lizards. Due to the harsh climate of Arctic tundra, regions of this kind have seen little human activity, even though they are sometimes rich in natural resources such as petroleum , natural gas , and uranium . In recent times this has begun to change in Alaska , Russia, and some other parts of

1200-417: The Aosta Valley region was the first region of Italy to abolish provincial subdivisions, followed by Friuli-Venezia Giulia in 2017 (where they were reestablished later). Provincial administrative functions are provided by the regional government. The region is divided into 74 comuni (French: communes ). The official languages are Italian and French ; Valdôtain , a dialect of Franco-Provençal ,

1250-463: The Italian language was native to 77.29% of respondents, Franco-Provençal to 17.91%, and French to 1.25%, though the active use of these languages by the population shows French at 75.41% and Franco-Provençal at 55.77%. The population of Gressoney-Saint-Jean , Gressoney-La-Trinité and Issime , in the Lys Valley , speak two dialects of Walser German , Titsch and Töitschu respectively. According to

1300-608: The President of the Republic of 31 October 1975 (art.5) states that it is mandatory to pass a French exam to teach in Aosta Valley for Italian native speakers, as well an Italian exam for French native speakers. Italian law No.196 of 16 May 1978 states the adaptation rules of national educational programmes into French for Aosta Valley, and states as well that all members of the examination boards must be fluent both in Italian and French. Aosta Valley students must pass an extra test in French at

1350-583: The areas of exposed rock and soil around the shore of the continent. Antarctica's two flowering plant species, the Antarctic hair grass ( Deschampsia antarctica ) and Antarctic pearlwort ( Colobanthus quitensis ), are found on the northern and western parts of the Antarctic Peninsula. In contrast with the Arctic tundra, the Antarctic tundra lacks a large mammal fauna, mostly due to its physical isolation from

1400-561: The atmosphere, creating a feedback cycle that changes climate. The term is a Russian word adapted from the Sámi languages . Arctic tundra occurs in the far Northern Hemisphere , north of the taiga belt. The word "tundra" usually refers only to the areas where the subsoil is permafrost , or permanently frozen soil. (It may also refer to the treeless plain in general so that northern Sápmi would be included.) Permafrost tundra includes vast areas of northern Russia and Canada. The polar tundra

1450-410: The central valley. Negative natural population growth since 1976 has been more than offset by immigration. The region has one of Italy's lowest birth rates , with a rising average age. This, too, is partly compensated by immigration, since most immigrants arriving in the region are younger people working in the tourist industry. Between 1991 and 2001, the population of Aosta Valley grew by 3.1%, which

1500-483: The climate system activated around 2 °C (3.6 °F) of global warming suggested that at this threshold, permafrost thaw would add a further 0.09 °C (0.16 °F) to global temperatures by 2100, with a range of 0.04–0.16 °C (0.07–0.29 °F) Antarctic tundra occurs on Antarctica and on several Antarctic and subantarctic islands, including South Georgia and the South Sandwich Islands and

1550-488: The increased amounts of warmer rain are another factor which increases permafrost thaw depths. The IPCC Sixth Assessment Report estimates that carbon dioxide and methane released from permafrost could amount to the equivalent of 14–175 billion tonnes of carbon dioxide per 1 °C (1.8 °F) of warming. For comparison, by 2019, annual anthropogenic emission of carbon dioxide alone stood around 40 billion tonnes. A 2018 perspectives article discussing tipping points in

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1600-457: The local Salassi around 25 BC and founded Augusta Prætoria Salassorum (modern-day Aosta) to secure the strategic mountain passes, and they went on to build bridges and roads through the mountains. Thus, the name Valle d'Aosta literally means "Valley of Augustus". In 1031–1032, Humbert I of Savoy , the founder of the House of Savoy , received the title Count of Aosta from Emperor Conrad II of

1650-620: The mid-13th century, Emperor Frederick II made the County of Aosta a duchy (see Duke of Aosta ), and its arms charged with a lion rampant were carried in the Savoy arms until the reunification of Italy in 1870. The region remained part of Savoy lands, with the exceptions of French occupations from 1539 to 1563, later in 1691, and then between 1704 and 1706. It was also ruled by the First French Empire between 1800 and 1814. During French rule, it

1700-478: The only subantarctic orchids; the royal penguin ; and the Antipodean albatross . There is some ambiguity on whether Magellanic moorland , on the west coast of Patagonia , should be considered tundra or not. Phytogeographer Edmundo Pisano called it tundra ( Spanish : tundra Magallánica ) since he considered the low temperatures key to restrict plant growth. More recent approaches have since recognized it as

1750-607: The other continents. Sea mammals and sea birds, including seals and penguins, inhabit areas near the shore, and some small mammals, like rabbits and cats, have been introduced by humans to some of the subantarctic islands. The Antipodes Subantarctic Islands tundra ecoregion includes the Bounty Islands , Auckland Islands , Antipodes Islands , the Campbell Island group , and Macquarie Island . Species endemic to this ecoregion include Corybas dienemus and Corybas sulcatus ,

1800-409: The past, above 3,500 m (11,500 ft), all months had an average temperature below freezing, with a perpetual frost climate (EF). In recent years, however, there has been a rise in temperatures. See, as an example, the data for Plateau Rosa. Early inhabitants of the Aosta Valley were Celts and Ligures , whose language heritage remains in some local placenames. Rome conquered the region from

1850-413: The polar tundra areas. During the winter it is very cold, dark, and windy with the average temperature around −28 °C (−18 °F), sometimes dipping as low as −50 °C (−58 °F). However, extreme cold temperatures on the tundra do not drop as low as those experienced in taiga areas further south (for example, Russia's, Canada's, and Alaska's lowest temperatures were recorded in locations south of

1900-522: The potential diversity of climates in the ET category involving precipitation, extreme temperatures, and relative wet and dry seasons, this category is rarely subdivided, although, for example, Wainwright, Alaska can be classified ETw and Provideniya, Russia ETs , with most of the rest of the tundra fitting into the ETf subcategory. Rainfall and snowfall are generally slight due to the low vapor pressure of water in

1950-444: The subject of habitat conservation programs. In Canada and Russia, many of these areas are protected through a national Biodiversity Action Plan . Tundra tends to be windy, with winds often blowing upwards of 50–100 km/h (30–60 mph). However, it is desert-like, with only about 150–250 mm (6–10 in) of precipitation falling per year (the summer is typically the season of maximum precipitation). Although precipitation

2000-435: The subject of some sociological research. The Aosta Valley was the first government authority to adopt Modern French as the official language in 1536, three years before France itself. Since 1946, Italian and French are the region's official languages and are used for the regional government's acts and laws, though Italian is much more widely spoken in everyday life, and French is mostly spoken in cultural life. Education

2050-532: The survey, Walser German was spoken as a mother tongue by 207 people, or 17.78%, in these three villages. Nevertheless, it was known to 56.38% of the population. There are numerous medieval castles and fortified houses in the Aosta Valley, including Châtel-Argent , Saint-Pierre Castle , Fénis Castle , Issogne Castle , Bard Fort , Ussel Castle , Sarre Castle , Cly Castle , Verrès Castle , and Châtelard Castle . Savoy Castle in Gressoney-Saint-Jean

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2100-412: The tree line). During the summer, temperatures rise somewhat, and the top layer of seasonally-frozen soil melts, leaving the ground very soggy. The tundra is covered in marshes, lakes, bogs, and streams during the warm months. Generally daytime temperatures during the summer rise to about 12 °C (54 °F) but can often drop to 3 °C (37 °F) or even below freezing. Arctic tundras are sometimes

2150-481: The tundra and the forest is known as the tree line or timberline. The tundra soil is rich in nitrogen and phosphorus . The soil also contains large amounts of biomass and decomposed biomass that has been stored as methane and carbon dioxide in the permafrost , making the tundra soil a carbon sink . As global warming heats the ecosystem and causes soil thawing, the permafrost carbon cycle accelerates and releases much of these soil-contained greenhouse gases into

2200-577: The valley has been dominated by autonomist regional parties such as the Valdostan Union , which represents the interests of the French-speaking population. The latest regional election was held in September 2020. On 2 March 2023, Renzo Testolin was elected regional president, supported by a coalition of autonomist and progressive lists. The Aosta Valley, being the smallest region of Italy by area,

2250-535: The valley. It is found in dishes such as the soup à la vâpeuleunèntse ( Valpelline Soup). Other cheeses made in the region are Tomme de Gressoney and Seras. Fromadzo ( Valdôtain for cheese ) has been produced locally since the 15th century and also has PDO status. Regional specialities, besides Fontina, are Motzetta (dried chamois meat), Vallée d'Aoste Lard d'Arnad (a cured and brined fatback product with PDO designation), Vallée d'Aoste Jambon de Bosses (a kind of ham , likewise with PDO designation),

2300-433: The wettest in the western Alps. Temperatures in January are low, between −7 and −3 °C (19 and 27 °F), and in July are between 20 and 35 °C (68 and 95 °F). Areas between 2,000 and 3,500 m (6,600 and 11,500 ft) usually have a tundra climate ( ET ), where every month has an average temperature below 10 °C (50 °F). This climate may be either a kind of more severe cold oceanic climate, with

2350-588: The world: for example, the Yamalo-Nenets Autonomous Okrug produces 90% of Russia's natural gas. A severe threat to tundra is global warming , which causes permafrost to thaw. The thawing of the permafrost in a given area on human time scales (decades or centuries) could radically change which species can survive there. It also represents a significant risk to infrastructure built on top of permafrost, such as roads and pipelines. In locations where dead vegetation and peat have accumulated, there

2400-490: Was conceived in the 19th century and completed in 1904. Since 1990, it has also been home to the Savoy Castle Alpine Botanical Garden . The cuisine of Aosta Valley is characterized by simplicity and revolves around "robust" ingredients such as potatoes, polenta ; cheese and meat; and rye bread . Many of the dishes involve Fontina , a cheese with PDO status, made from cow's milk that originates from

2450-546: Was created in 1898 by Queen Margherita of Savoy . 45°46′58″N 7°51′13″E  /  45.78278°N 7.85361°E  / 45.78278; 7.85361 This Italian location article is a stub . You can help Misplaced Pages by expanding it . This article related to a garden in Italy is a stub . You can help Misplaced Pages by expanding it . Aosta Valley The Aosta Valley ( French : Vallée d'Aoste [vale dɔst] ; Italian : Valle d'Aosta [ˈvalle daˈɔsta] ; Arpitan : Val d'Aoûta )

2500-503: Was part of Aoste arrondissement in Doire department. As part of the Kingdom of Sardinia , it joined the new Kingdom of Italy in 1861. French forces briefly controlled the area at the end of World War II , but withdrew under British and American pressure. The region gained special autonomous status after the end of World War II; the province of Aosta ceased to exist in 1945. For decades,

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