Benthic moss pillars in Antarctic lakes |
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| Authors: | Satoshi Imura Tadashi Bando Shoichi Saito Koji Seto Hiroshi Kanda |
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| Institution: | (1) National Institute of Polar Research, 9–10, Kaga, 1-chome, Itabashi-ku, Tokyo 173-8515, Japan, e-mail: imura@nipr.ac.jp, JP;(2) Department of Biology, Kyoto University of Education, Fukakusa, Fushimi-ku, Kyoto 612-8522, Japan, JP;(3) Department of Natural Science, Faculty of Education, Hirosaki University, 1, Bunkyo-cho, Hirosaki 036-8560, Japan, JP;(4) Department of Geoscience, Interdisciplinary Faculty of Science and Engineering, Shimane University, 1060, Nishi-kawatsu, Matsue City, Shimane 690-8504, Japan, JP |
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| Abstract: | Unique pillar-like colonies of aquatic mosses, rising from cyanobacterial and algal mats, have been discovered in some freshwater
lakes in the vicinity of Syowa Station (69°00′S, 39°35′E), continental Antarctica. These moss pillars are about 40 cm in diameter
and up to 60 cm high and occur at the lake bottoms mainly between 3 and 5 m depth. The primary component is a species of Leptobryum, a genus unknown in the continental Antarctic terrestrial bryoflora and as an aquatic genus elsewhere in the world. Bryum pseudotriquetrum is often an associated species. In longitudinal section the pillars reveal several whitish layers formed by mineral sediment
and dead cyanobacteria. It is speculated that the biomass of aquatic mosses at the bottom of many Antarctic lakes is considerably
greater than that previously estimated.
Accepted: 11 April 1999 |
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