Subfossil faunal and floral remains (Cladocera, Pediastrum) in two northern Lobelia lakes in Finland
The analysis of lake sediment cores have been long used as historical integrators of environmental changes. Nutrient poor isoetid lakes remain under studied in the north boreal region. Hence, the bottom sediments of two north boreal Lobelia lakes, located in NE Finland...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2011-11-01
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| Series: | Knowledge and Management of Aquatic Ecosystems |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1051/kmae/2011066 |
| _version_ | 1811298752078544896 |
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| author | Szeroczyńska K. Zawisza E. |
| author_facet | Szeroczyńska K. Zawisza E. |
| author_sort | Szeroczyńska K. |
| collection | DOAJ |
| description | The analysis of lake sediment cores have been long used as historical integrators of
environmental changes. Nutrient poor isoetid lakes remain under studied in the north
boreal region. Hence, the bottom sediments of two north boreal Lobelia
lakes, located in NE Finland were analysed for the presence of Cladocera and
Pediastrum remains. Sediment cores from the littoral zones were
sampled, sectioned every centimetre and aged with 210Pb. The number of taxa of
both Cladocera and Pediastrum identified in the cores was high, while the
number of individuals in each taxon was low. In Lake Kevojärvi, twenty five Cladocera
species and eight Pediastrum species were found. Along with widely
distributed species, typical for north boreal regions, species preferring more temperate
environments occurred. In Lake Petäjälampi, the species composition was similar. Twenty
one Cladocera species and five Pediastrum species occurred there, however
with a lower frequency of individuals in each taxon. In both Lobelia
lakes, analyses of subfossil Cladocera and Pediastrum remains,
from the sediments deposited within the last 30–40 years indicated a recent increase in
trophic status. |
| first_indexed | 2024-04-13T06:25:02Z |
| format | Article |
| id | doaj.art-c7060e31926548b5b2dae03b0ee835b7 |
| institution | Directory Open Access Journal |
| issn | 1961-9502 |
| language | English |
| last_indexed | 2024-04-13T06:25:02Z |
| publishDate | 2011-11-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Knowledge and Management of Aquatic Ecosystems |
| spelling | doaj.art-c7060e31926548b5b2dae03b0ee835b72022-12-22T02:58:28ZengEDP SciencesKnowledge and Management of Aquatic Ecosystems1961-95022011-11-0104020910.1051/kmae/2011066kmae110021Subfossil faunal and floral remains (Cladocera, Pediastrum) in two northern Lobelia lakes in FinlandSzeroczyńska K.0Zawisza E.1Institute of Geological Sciences, Polish Academy of Sciences, Research Centre in WarsawInstitute of Geological Sciences, Polish Academy of Sciences, Research Centre in WarsawThe analysis of lake sediment cores have been long used as historical integrators of environmental changes. Nutrient poor isoetid lakes remain under studied in the north boreal region. Hence, the bottom sediments of two north boreal Lobelia lakes, located in NE Finland were analysed for the presence of Cladocera and Pediastrum remains. Sediment cores from the littoral zones were sampled, sectioned every centimetre and aged with 210Pb. The number of taxa of both Cladocera and Pediastrum identified in the cores was high, while the number of individuals in each taxon was low. In Lake Kevojärvi, twenty five Cladocera species and eight Pediastrum species were found. Along with widely distributed species, typical for north boreal regions, species preferring more temperate environments occurred. In Lake Petäjälampi, the species composition was similar. Twenty one Cladocera species and five Pediastrum species occurred there, however with a lower frequency of individuals in each taxon. In both Lobelia lakes, analyses of subfossil Cladocera and Pediastrum remains, from the sediments deposited within the last 30–40 years indicated a recent increase in trophic status.http://dx.doi.org/10.1051/kmae/2011066CladoceraPediastrum remainsNE FinlandpaleolimnologyCrustaceaalgae |
| spellingShingle | Szeroczyńska K. Zawisza E. Subfossil faunal and floral remains (Cladocera, Pediastrum) in two northern Lobelia lakes in Finland Knowledge and Management of Aquatic Ecosystems Cladocera Pediastrum remains NE Finland paleolimnology Crustacea algae |
| title | Subfossil faunal and floral remains (Cladocera,
Pediastrum) in two northern Lobelia lakes in
Finland |
| title_full | Subfossil faunal and floral remains (Cladocera,
Pediastrum) in two northern Lobelia lakes in
Finland |
| title_fullStr | Subfossil faunal and floral remains (Cladocera,
Pediastrum) in two northern Lobelia lakes in
Finland |
| title_full_unstemmed | Subfossil faunal and floral remains (Cladocera,
Pediastrum) in two northern Lobelia lakes in
Finland |
| title_short | Subfossil faunal and floral remains (Cladocera,
Pediastrum) in two northern Lobelia lakes in
Finland |
| title_sort | subfossil faunal and floral remains cladocera pediastrum in two northern lobelia lakes in finland |
| topic | Cladocera Pediastrum remains NE Finland paleolimnology Crustacea algae |
| url | http://dx.doi.org/10.1051/kmae/2011066 |
| work_keys_str_mv | AT szeroczynskak subfossilfaunalandfloralremainscladocerapediastrumintwonorthernlobelialakesinfinland AT zawiszae subfossilfaunalandfloralremainscladocerapediastrumintwonorthernlobelialakesinfinland |