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Assessing the biomass and distribution of submerged aquatic vegetation using multibeam echo sounding in Lake Towada, Japan

Abukawa, Kazuki and Yamamuro, Masumi and Kikvidze, Zaal and Asada, Akira and Chunhui, Xu and Sugimoto, Kenichi (2013) Assessing the biomass and distribution of submerged aquatic vegetation using multibeam echo sounding in Lake Towada, Japan. Limnology, 14. pp. 39-42. ISSN 1439-863X

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Abstract

Here we report on an advanced survey system that combines multibeam echo sounding with underwater photography, which was used to collect accurate data on the distribution and abundance of submerged aquatic vegetation (SAV) in Lake Towada. The use of this system enabled us to visualize the cover, height, and biomass of the SAV over the lake bottom, as well as to distinguish between different components of the SAV such as vascular and algal plants. The spatial distributions of these major components of the SAV varied as a function of the depth gradient. The vascular component was mostly represented by Potamogeton species, which accounted for around one-third of the standing mass of SAV, whilst more than half of the SAV was algal (charophytes). This abundance of charophytes may well be responsible for the high water quality and transparency of Lake Towada.

Item Type: Article
Subjects: Q Science > Ecology
Divisions: Institutes > 4D Research Institute
Depositing User: Prof. Zaal Kikvidze
Date Deposited: 16 Apr 2015 06:01
Last Modified: 16 Apr 2015 06:01
URI: http://eprints.iliauni.edu.ge/id/eprint/2069

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