Loch Tallant. (2000)

Loch Tallant is a shallow loch in a nutrient-poor peaty basin: marginal vegetation is gradually encroaching on the open water and the loch is now only a remnant of the original.

Hidden Lochan is in a densely (planted) forested area near Aviemore. The lochan is formed in a peaty depression and the waters are highly coloured. That's me using a plankton net.

Green Lochan is in the Scots pine (Pinus sylvestris) forest on the edge of the Cairngorms. The soils are shallow and gravelly, and the lochan appears to be nutrient-poor (no assays have been done), its chemistry probably dominated by the geology. The waters are very clear, the bottom covered with stones and fallen logs. There are few macrophytes present.

Stac Pollaidh is a Corbett (mountain 2000-3000 feet high) within the Inverpolly estate. The area is dominated by its proximity to the Atlantic coast and has poor soils based on Torridonian sandstone overlain with peat. There are numerous mountains rising abruptly from the lower ground which is dissected by brown-water lochs.
More pictures of the area here and here.

Kindrogan pond is near the Kindrogan field centre in Perthshire: this page shows periphytic algae collected on slides exposed in the pond for 24 hours then grown in filtered pond water for ~ 6 weeks.
Algae from the Kindrogan area in 2003 can be seen here.

Millport Reservoir was the water supply (now disused) for the island of Cumbrae. I collected some algal samples there while helping with a field course at the island's Marine Biology station. The picture shows Millport's famous Crocodile Rock.
2002 samples 
2003 samples  
2004 samples 
2005 samples  
2006 samples 
2007 samples.

Loch Skeen lies in a glacial hanging valley in the Scottish Borders area: the Tail Burn which drains it cascades into the Moffat Water, forming a waterfall called the Grey Mare's Tail. The area is popular with tourists, and a steep but well-constructed path leads up the side of the waterfall to the loch.