Hostname: page-component-77c89778f8-vsgnj Total loading time: 0 Render date: 2024-07-18T21:33:38.517Z Has data issue: false hasContentIssue false
  • English
  • Français

XIII.—The Brackish‐water Lochs of Orkney

Published online by Cambridge University Press:  15 September 2014

Edith A. T. Nicol
Edith A. T. Nicol
Affiliation:
The Department of Natural History, The University of St Andrews
Get access

Extract

The Lochs of Stenness and Harray on the mainland of Orkney are the only known stations in Scotland for Neritina fluviatilis L. The Loch of Stenness has a salinity varying between 9 and 26·8 parts per thousand; 24 species of invertebrates live in the loch, as well as several kinds of fish. The distribution of H. jenkinsi Smith and Peringia ulvœ Pennant is peculiar and only partly explicable by the salinity. The Loch of Harray is almost fresh and only slightly affected by spring tides, the salinity varying between 0·6 and 4·3 parts per thousand. Twenty-seven species of invertebrates are to be found in it, most of which are fresh-water species. The calcium content of the lochs varies from 56 to 139 mg. per litre.

Type
Proceedings
Information
Proceedings of the Royal Society of Edinburgh , Volume 58 , 1939 , pp. 181 - 191
Copyright
Copyright © Royal Society of Edinburgh 1939

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

References to Literature

Boycott, A. E., 1936. “Neritina fluviatilis in Orkney,” Journ. Conchol., vol. xx, pp. 199–200.Google Scholar
Buckley, T. E., and Harvie‐Brown, J. A., 1891. A Vertebrate Fauna of the Orkney Islands, Edinburgh.Google Scholar
Dunn, M. D., 1937. “Notes on the Flora of Loch Harray and Loch Stenness,” Trans. Proc. Bot. Soc. Edin., vol. xxxii, pp. 368–372.CrossRefGoogle Scholar
Ellis, A. E., 1925. British Snails, Oxford.Google Scholar
Jeffreys, J. G., 1862. British Conchology, London.Google Scholar
Johanssen, A. C., 1918. Randersfjord Naturhistorie, Copenhagen.Google Scholar
Murray, J., and Pullar, L., 1910. Bathymetrical Survey of the Freshwater Lochs of Scotland, vol. ii, pt. 2, pp. 224–225, Edinburgh.Google Scholar
Nicol, E. A. T., 1936. “The Brackish‐water Lochs of North Uist,” Proc. Roy. Soc. Edin., vol. lvi, pp. 169–195.Google Scholar
Oldham, C., 1927. “Paludestrina jenkinsi in Orkney and Caithness,” Journ. Conchol., vol. xvii, pp. 272.Google Scholar
Scott, T., 1890. “The Invertebrate Fauna of the Inland Waters of Scotland,” III. Rept. Fishery Board, Scotland, pp. 269–296.Google Scholar
Tomlinson, J. R. le B., 1936. “Mollusca Destroyed by Frost,” Journ. Conchol., vol. xx, pp. 273–274.Google Scholar
Waterston, J., 1903. “Mollusca Observed at Stromness, Orkney,” Ann. Scot. Nat. Hist., vol. xii, p. 52.Google Scholar
Winckworth, R., 1920. “Giant Race of Cardium edule,” Journ. Conchol., vol. xvi, p.569.Google Scholar