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Flora of Scotland
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Flora of Scotland : ウィキペディア英語版
Flora of Scotland

The flora of Scotland is an assemblage of native plant species including over 1,600 vascular plants, more than 1,500 lichens and nearly 1,000 bryophytes. The total number of vascular species is low by world standard but lichens and bryophytes are abundant and the latter form a population of global importance. Various populations of rare fern exist, although the impact of 19th century collectors threatened the existence of several species. The flora is generally typical of the north west European part of the Palearctic ecozone and prominent features of the Scottish flora include boreal Caledonian forest (much reduced from its natural extent), heather moorland and coastal machair.〔("Flowering Plants and Ferns" ) SNH. Retrieved 26 April 2008〕 In addition to the native varieties of vascular plants there are numerous non-native introductions, now believed to make up some 43% of the species in the country.〔("Natural Heritage Trends. Species diversity: plant species" ) SNH. Retrieved 26 April 2008〕〔("LICHENS: Biodiversity & Conservation" ) RBGE. Retrieved 26 April 2008〕
There are a variety of important trees species and specimens; a Grand Fir in Argyll is the tallest tree in the United Kingdom and the Fortingall Yew may be the oldest tree in Europe. The Arran Whitebeams, Shetland Mouse-ear and Scottish Primrose are endemic flowering plants and there are a variety of endemic mosses and lichens. Conservation of the natural environment is well developed and various organisations play an important role in the stewardship of the country's flora. Numerous references to the country's flora appear in folklore, song and poetry.
== Habitats ==


Scotland enjoys a diversity of temperate ecologies, incorporating both deciduous and coniferous woodlands, and moorland, montane, estuarine, freshwater, oceanic, and tundra landscapes.〔(【引用サイトリンク】 Scottish wildlife habitats )〕 Approximately 14% of Scotland is wooded, much of it forestry plantations, but prior to human clearing there would have been much larger areas of boreal Caledonian and broad-leaved forest. Although much reduced, significant remnants of the native Scots Pine woodlands can be found in places. 17% of Scotland is covered by heather moorland and peatland. Caithness and Sutherland have some of the largest and most intact areas of blanket bog in the world, supporting a distinctive wildlife community.〔(【引用サイトリンク】 North Highland Peatlands )〕 75% of Scotland's land is classed as agricultural (including some moorland) with urban areas accounting for around 3% of the total. The number of islands with terrestrial vegetation is nearly 800, about 600 of them lying off the west coast. Scotland has more than 90% of the volume and 70% of the total surface area of fresh water in the United Kingdom. There are more than 30,000 freshwater lochs and 6,600 river systems.〔
Below the tree line there are several zones of climax forest. Birch dominates to the west and north, Scots Pine with Birch and oak in the eastern Highlands and oak (both ''Quercus robur'' and ''Q. petrea'') with Birch in the Central Lowlands and Borders.〔Tivy, Joy "The Bio-climate" in Clapperton, Chalmers M. (ed.) (1983) ''Scotland: A New Study''. Newton Abbott. David & Charles.〕 Much of the Scottish coastline consists of machair, a fertile dune pasture land formed as sea levels subsided after the last ice age. Machairs have received considerable ecological and conservational attention, chiefly because of their unique ecosystems.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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