and along the River Tweed. Brown trout are common in many burns and a number of the rivers in the area have populations of sea trout, salmon and Eurasian otters. Local government The two unitary authorities of Dumfries and Galloway in the west and the Scottish Borders in the east cover almost all of the Southern Uplands. Along its northern margins, the councils of South Ayrshire, East Ayrshire, South Lanarkshire and East Lothian extend into the region. After local government reorganisation in 1974 and prior to further reorganisation in 1996, the Southern Uplands were administered by the two 'regions' of Dumfries & Galloway and Borders along with the southern margins of the regions of Strathclyde and Lothian. Within each of these regions were districts with their own district councils. Historically, i.e. prior to 1974, the region comprised the counties of Wigtown, Kirkcudbright, Dumfries, Roxburgh, Peebles, Selkirk and Berwick together with parts of Ayrshire, Lanarkshire, Midlothian and East Lothian. The geography of the region has caused it to be sparsely populated, a characteristic shared with the Highlands but in contrast to the Central Lowlands. Although the political and geographical borders do not precisely coincide, the two southern local authority areas have a combined population of around 265,000 across , fewer inhabitants than five of the areas within the Central Lowlands, for example North Lanarkshire is home to 340,000 across . Economy Agriculture and forestry are the main forms of land use in the Southern Uplands. Sustainable power has been in production for several decades: the Galloway hydro-electric power scheme was built between 1930 and 1936. More recently a number of wind farms have been developed on upland sites. Tourism and recreation are of increasing importance: walking, fishing and grouse shooting are traditional pursuits and mountain biking has become popular in recent years. The textile industry employed large numbers in many of the towns of the Scottish Borders in the 19th and 20th centuries. Stocking frames were introduced in Hawick in 1771 and Galashiels' first woollen mill was built in 1800, but textile manufacture had a long history in the area: linen production had been a major industry since the Middle Ages. The textile industry declined in the late 20th century, with 7,800 people employed in 1981 and only 4,400 by 1998. However, it continues to be significant both to the local economy and to that of Scotland in general. Agriculture Generally,