Glen Roy National Nature Reserve | |
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Location | Roybridge, Lochaber, Scotland |
Coordinates | 56°58′N4°46′W / 56.97°N 4.76°W Coordinates: 56°58′N4°46′W / 56.97°N 4.76°W |
Area | 1,168.3 ha (4.511 sq mi) [2] |
Established | 1970 [1] |
Governing body | NatureScot |
Glen Roy National Nature Reserve |
Glen Roy (Scottish Gaelic : Gleann Ruaidh, meaning "red glen" [3] ) in the Lochaber area of the Highlands of Scotland is a glen noted for the geological phenomenon of three loch terraces known as the Parallel Roads of Glen Roy. The terraces formed along the shorelines of an ancient ice-dammed loch that existed during a brief period (some 900–1,100 years in duration) of climatic deterioration, during a much longer period of deglaciation, subsequent to the last main ice age (the Devensian). From a distance they resemble man-made roads running along the side of the glen, hence the name. Much of the glen is designated as a national nature reserve. [2]
Glen Roy runs north from Glen Spean which takes the main A86 trunk road and the railway of the West Highland Line, both running about a further 23 kilometres (14 mi) southwest via Spean Bridge to Fort William. The village of Roybridge and Roy Bridge railway station are sited where the River Roy joins the River Spean, and from there a narrow single-track road runs north up the glen for almost 16 kilometres (10 mi) to Brae Roy Lodge.
The Parallel Roads of Glen Roy, Scottish Highlands, represent a series of ice-dammed proglacial lake shorelines produced during the cold climate of the Younger Dryas (GS1). It has been demonstrated by Dawson, Hampton, Harrison, Greengrass and Fretwell (2002) that each lake shoreline exhibits evidence of glacio-isostatic tilting associated with the decay of the last (Late Devensian) ice sheet. The directions of tilting of the three shorelines (in the quadrant between north and east), are at variance with published glacio-isostatic uplift isobases based on marine shoreline data that suggest a pattern of decreased uplift towards the northwest. The gradient of shoreline tilting (between 0.11 and 0.14 m/km) is similar to measured regional tilts of a well-developed marine shoreline (the Main Rock Platform) considered to have been produced in Scotland during the same period of extreme cold climate. Consideration of the ice-dammed lake shoreline data also points to the former occurrence of two separate episodes of tectonic activity during the Younger Dryas (Greenland Stadial 1 - GS1).
In the 19th century, the Parallel Roads attracted the attention of many early geologists, including the Reverend William Buckland, Charles Lyell, James Nicol, [4] Charles Babbage, [5] James Geikie, and Joseph Prestwich. This interest ensured that the Parallel Roads featured prominently in the development of geological science.
Charles Darwin visited the glen in June 1838 and, drawing on his recent findings in South America during the Beagle expedition concluded that the shorelines were raised beaches of marine origin. His paper on the subject was published in 1839 in the Philosophical Transactions of the Royal Society . This was contradicted in 1840 by Louis Agassiz's Glacial theory which postulated that the Glen Roy shorelines had been cut by freeze-thaw processes of loch ice during the maximum extent of glacial ice in the climatic reversal known as the Younger Dryas / Greenland Stadial, or locally the Loch Lomond Readvance. Darwin defended his paper over many years.
In 1861 Thomas Jamieson was advised by Lyell and Darwin about visiting the Glen, and given memoranda and maps by Darwin. After visiting the glen a second time in the summer of 1862, Jamieson wrote to Lyell on 15 August reporting his findings. On 6 September Darwin told Lyell and Jamieson that he was convinced: "My paper is one long gigantic blunder". [6] [7] [8] Jamieson's paper on his investigations was published in 1863. [9] Four decades after Darwin's 1839 paper and shortly before his death, in a letter to Joseph Prestwich, [10] he said that he gave up his Glen Roy theory when he read T. F. Jamieson's (1863) paper but he agreed with Prestwich's criticism of Jamieson's interpretation of the Glen Turret delta.
Interest in the Parallel Roads continues to this day, both among earth scientists intrigued by the dramatic processes that shaped that landscape, and among tourists attracted by the natural wonder of the landforms.
Glen Roy is a national nature reserve (NNR), managed by NatureScot. [11] Glen Roy was acquired by the then Nature Conservancy in 1970 and declared a national nature reserve in order to protect the site against proposed afforestation. Whilst Glen Roy is also protected as a Site of Special Scientific Interest (SSSI), [12] at that time this accolade offered much weaker protection than it does today. Protection now comes from both its SSSI and NNR status. The NNR is designated a Category III protected area by the International Union for Conservation of Nature. [1] Glen Roy is also defined as one of the core areas of the Lochaber Geopark. [13]
A pair of historic lifting stones can be found in Glen Roy these are 137kg (The 'Grey Mountain') and 133kg (Sister Red). The exact location is as follows: an example of a full shoulder lift can be seen here:
The national nature reserves (NNRs) of Scotland are areas of land or water designated under the Wildlife and Countryside Act 1981 as containing habitats and species of national importance. National nature reserves can be owned by public, private, community or voluntary organisations but must be managed to conserve their important habitats and species, as well as providing opportunities for the public to enjoy and engage with nature. There are currently 43 NNRs in Scotland, which cover 154,250 hectares (1,542.5 km2), or less than 1.5% of the land area of Scotland. They range in size from Corrieshalloch Gorge at 7 ha to Mar Lodge Estate, which covers 29,324 ha.
Loch Maree is a loch in Wester Ross in the Northwest Highlands of Scotland. At 21.7 km (13.46 mi) long and with a maximum width of four kilometres, it is the fourth-largest freshwater loch in Scotland; it is the largest north of Loch Ness. Its surface area is 28.7 km2 (11.08 sq mi).
Beinn Eighe is a mountain massif in the Torridon area of Wester Ross in the Northwest Highlands of Scotland. Lying south of Loch Maree, it forms a long ridge with many spurs and summits, two of which are classified as Munros: Ruadh-stac Mòr at 1,010 m (3,314 ft) and Spidean Coire nan Clach at 993 m (3,258 ft). Unlike most other hills in the area it has a cap of Cambrian basal quartzite which gives the peaks of Beinn Eighe a distinctive light colour. Its complex topography has made it popular with both hillwalkers and climbers and the national nature reserve on its northern side makes it an accessible mountain for all visitors.
Loch Fleet is a sea loch on the east coast of Scotland, located between Golspie and Dornoch. It forms the estuary of the River Fleet, a small spate river that rises in the hills east of Lairg. The loch was designated a National Nature Reserve (NNR) in 1998, and is managed by a partnership between NatureScot, the Scottish Wildlife Trust (SWT) and Sutherland Estates. The NNR extends to 1058 hectares, including the Loch Fleet tidal basin, sand dunes, shingle ridges and the adjacent pine woods, including Balbair Wood and Ferry Wood. The tidal basin of the loch covers over 630 ha, and forms the largest habitat on the NNR.
Loch Shiel is a freshwater loch situated 20 kilometres (12 mi) west of Fort William in the Highland council area of Scotland. At 28 kilometres long it is the 4th longest loch in Scotland, and is the longest to have retained a natural outflow without any regulation of its water level, being 120 m (393 ft) deep. Its nature changes considerably along its length, being deep and enclosed by mountains in the north east and shallow surrounded by bog and rough pasture in the south west, from which end the 4 km River Shiel drains to the sea in Loch Moidart near Castle Tioram.
Corrieshalloch Gorge is a gorge situated about 20 km south of Ullapool, close to the junction of the A832 and A835 roads near Braemore in the Scottish Highlands. The gorge is approximately 1.5 km long, 60 m deep, and 10 m wide at its lip. The Abhainn Droma flows through Corrieshalloch, below which the landscape opens out into a broad, flat-bottomed glacial trough at the head of Loch Broom.
Ben Wyvis is a mountain in Easter Ross, in the northern Highlands of Scotland. It lies north-west of Dingwall, in the council area of Highland, and the county of Ross and Cromarty. Ben Wyvis is a large winding and undulating ridge running roughly north–south for about 5 km, the highest point of which is Glas Leathad Mòr at 1,046 metres (3,432 ft). Geologically, the ridge is composed of Moine pelitic gneiss. The mountain is prominent in views of the area, presenting a whale-back shape above the farmland of Strathconon.
Creag Meagaidh is a mountain on the northern side of Glen Spean in the Highlands of Scotland. It is a complex mountain, made up of a flat summit plateau, with five ridges spreading out from it, overlooking five deep corries; it is most famed for the cliffs surrounding the corrie of Coire Ardair on the north-eastern face. These crags are a renowned venue for ice climbing. Creag Meagaidh rises to 1,130 metres (3,710 ft).
Glenmore Forest Park is a remnant of the Caledonian Forest near Aviemore in the Badenoch and Strathspey district of Highland, Scotland. Owned and managed by Forestry and Land Scotland, it lies within the Cairngorms National Park, and is one of six forest parks in the country. The forest park, which was established in 1948, covers 35.7 km2, of which 21.1 km2 is designated as a national nature reserve (NNR). Glenmore surrounds Loch Morlich, and is below the rise of the Cairngorms to the south; to the north the park extends to the summit of Meall a' Bhuachaille. The forest forms part of an expanse of Caledonian Forest that stretches from Glen Feshie to Abernethy, and which as a whole forms the largest single area of this habitat remaining in Scotland. It is home to much wildlife including Scottish crossbills, crested tits, capercaillie, narrow-headed ants, red squirrels and red deer.
Abernethy Forest is a remnant of the Caledonian Forest in Strathspey, in the Highland council area of Scotland. It lies within the Cairngorms National Park, close to the villages of Nethy Bridge, Boat of Garten, and Aviemore. The forest is an RSPB reserve, close to Loch Garten Osprey Centre, which is also owned by the RSPB. It is popular with walkers, as there are various trails throughout the reserve. The forest forms part of the wider Abernethy National Nature Reserve.
Thomas Francis Jamieson (1829-1913) was a Scottish scientist most associated with his studies of sea level and glacial isostasy during the Quaternary.
Corrie Fee is a glacier-carved corrie situated at the head of Glen Clova in the Angus Glens of Scotland. It forms part of Corrie Fee National Nature Reserve (NNR), which is managed by NatureScot and lies within the Cairngorms National Park. The adjoining Corrie Sharroch and the slopes of Craig Rennet are also included in the NNR.
Morton Lochs is part of Tentsmuir National Nature Reserve located near Tayport, in the north east of Fife, Scotland. It consists of three small lochs important for a variety of waterfowl species. As well as being a national nature reserve (NNR) the lochs are also designated as a Site of Special Scientific Interest (SSSI) in their own right, and are classified as a Category IV protected area by the International Union for Conservation of Nature.
The Clyde Valley Woodlands National Nature Reserve (NNR) comprises six separate woodland sites in the Clyde Valley region of South Lanarkshire, Scotland. These six sites are located along a 12 km section of the River Clyde and its tributaries, and lie close to built-up areas such as Hamilton and Lanark on the southern outskirts of Greater Glasgow. The sites can be easily accessed by about two million people living in the surrounding urban areas, making the reserve unique amongst Scotland's NNRs, most of which tend to be located in more remote areas. The six sites are:
Tentsmuir National Nature Reserve (NNR) is located southeast of Tayport in Fife, Scotland. The reserve is made up of three parts, encompassing Morton Lochs, Tentsmuir Point and Tayport Heath, and is managed by NatureScot. The different sections of Tentsmuir NNR were originally designated as separate national nature reserves at different times: the Morton Lochs section was designated in 1952; Tentsmuir Point in 1954; and Tayport Heath in 1988. While these discrete sections are distant from one another, they form part of the extensive dune system at Tentsmuir, and in 2003 SNH combined the three sites to form Tentsmuir National Nature Reserve. The adjoining Tentsmuir Forest is managed by Forestry and Land Scotland and covers most of the land between the three portions of the NNR.
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