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The horizontal distribution of plankton in a deep, oligotrophic lake—Loch Ness, Scotland.

Jones, R. I. and Fulcher, A. S. and Jayakody, J. K. U. and Laybourn-Parry, J. and Shine, A. J. and Walton, M. C. and Young, J. M. (1995) The horizontal distribution of plankton in a deep, oligotrophic lake—Loch Ness, Scotland. Freshwater Biology, 33 (2). pp. 161-170.

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Abstract

1. The horizontal distribution of plankton in Loch Ness, a deep, oligotrophic lake with a simple trench morphometry, was studied on three occasions in 1993. Samples were collected from ten stations spaced along the length of the loch and the abundance of algae, bacteria, protozoa, rotifers and crustacean zooplankton was determined. 2. Horizontal variability was found to be greatest for the metazoan zooplankton and for the algae, especially two cryptomonad flagellates. Bacteria and heterotrophic protozoa showed relatively little horizontal variability. The degree of horizontal variability was not sufficient seriously to affect studies of the seasonality of plankton abundance conducted from a single sampling station. 3. Gradients of plankton distribution along the length of the loch were dependent on the recent wind history. The direction of the gradient could readily reverse with a shift in wind direction. These results indicate that the horizontal distribution of plankton in Loch Ness is more dependent on wind-induced water circulation patterns than on differential growth of plankton in water masses of differing chemistry.

Item Type: Article
Journal or Publication Title: Freshwater Biology
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > School of Computing & Communications
Faculty of Arts & Social Sciences > Linguistics & English Language
ID Code: 22287
Deposited By: ep_ss_importer
Deposited On: 06 Feb 2009 14:49
Refereed?: No
Published?: Published
Last Modified: 26 Jul 2012 15:58
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/22287

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