Species diversity and spatial distribution of the summer rotifer assemblages in Lake Ladoga
The rotifer assemblages of Lake Ladoga were studied in samples of the 0–10 m water layer taken at 60 sampling stations in different parts of the lake in August 1994 and 1995. In general, the species composition of the pelagial assemblages was rather similar throughout the lake. However, the dominant...
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Boreal Environment Research Publishing Board
2024
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/578060 2024-09-09T19:34:21+00:00 Species diversity and spatial distribution of the summer rotifer assemblages in Lake Ladoga Telesh, I.V. 2024-06-27T13:44:34Z 257-262 application/pdf http://hdl.handle.net/10138/578060 eng eng Boreal Environment Research Publishing Board Boreal Environment Research 1239-6095 1797-2469 3 4 http://hdl.handle.net/10138/578060 Suomen ympäristökeskus CC BY 4.0 openAccess Artikkeli lehdessä 2024 ftunivhelsihelda 2024-08-21T23:48:04Z The rotifer assemblages of Lake Ladoga were studied in samples of the 0–10 m water layer taken at 60 sampling stations in different parts of the lake in August 1994 and 1995. In general, the species composition of the pelagial assemblages was rather similar throughout the lake. However, the dominant species differed markedly between the northern part, the central area and the Volkhov Bay. The highest species diversity (Shannon index H´ = 3.03) and lowest wet weight biomass of rotifers (0.015 mg WW l–1) were recorded in the Volkhov Bay, maximum biomass (2.53 mg WW l–1) in the northern pelagic region, and lowest species diversity (H' = 0.25) in the northern archipelago. The filter-feeding microphagous rotifers Conochilus unicornis and Keratella cochlearis dominated most of the microzooplankton communities in the northern parts of the lake, while grasping phytophagous species of the genus Polyarthra predominated in the central and south-eastern parts. Species diversity, spatial distribution and the role of rotifers in the zooplankton community structure are discussed in relation to the ecological zoning of Lake Ladoga. Article in Journal/Newspaper Boreal Environment Research Rotifer HELDA – University of Helsinki Open Repository |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
description |
The rotifer assemblages of Lake Ladoga were studied in samples of the 0–10 m water layer taken at 60 sampling stations in different parts of the lake in August 1994 and 1995. In general, the species composition of the pelagial assemblages was rather similar throughout the lake. However, the dominant species differed markedly between the northern part, the central area and the Volkhov Bay. The highest species diversity (Shannon index H´ = 3.03) and lowest wet weight biomass of rotifers (0.015 mg WW l–1) were recorded in the Volkhov Bay, maximum biomass (2.53 mg WW l–1) in the northern pelagic region, and lowest species diversity (H' = 0.25) in the northern archipelago. The filter-feeding microphagous rotifers Conochilus unicornis and Keratella cochlearis dominated most of the microzooplankton communities in the northern parts of the lake, while grasping phytophagous species of the genus Polyarthra predominated in the central and south-eastern parts. Species diversity, spatial distribution and the role of rotifers in the zooplankton community structure are discussed in relation to the ecological zoning of Lake Ladoga. |
format |
Article in Journal/Newspaper |
author |
Telesh, I.V. |
spellingShingle |
Telesh, I.V. Species diversity and spatial distribution of the summer rotifer assemblages in Lake Ladoga |
author_facet |
Telesh, I.V. |
author_sort |
Telesh, I.V. |
title |
Species diversity and spatial distribution of the summer rotifer assemblages in Lake Ladoga |
title_short |
Species diversity and spatial distribution of the summer rotifer assemblages in Lake Ladoga |
title_full |
Species diversity and spatial distribution of the summer rotifer assemblages in Lake Ladoga |
title_fullStr |
Species diversity and spatial distribution of the summer rotifer assemblages in Lake Ladoga |
title_full_unstemmed |
Species diversity and spatial distribution of the summer rotifer assemblages in Lake Ladoga |
title_sort |
species diversity and spatial distribution of the summer rotifer assemblages in lake ladoga |
publisher |
Boreal Environment Research Publishing Board |
publishDate |
2024 |
url |
http://hdl.handle.net/10138/578060 |
genre |
Boreal Environment Research Rotifer |
genre_facet |
Boreal Environment Research Rotifer |
op_relation |
Boreal Environment Research 1239-6095 1797-2469 3 4 http://hdl.handle.net/10138/578060 Suomen ympäristökeskus |
op_rights |
CC BY 4.0 openAccess |
_version_ |
1809903833034260480 |