Links between biota and climate-related variables in the Baltic region using Lake Onega as an example
This paper aims to reveal current changes (recent decades) in regional climatic variables like water temperature (WT), the duration of the ice-free period (ICE-FREE) and the precipitation rate (P), as exemplified by Petrozavodsk Bay (Lake Onega, European Russia), and to analyse their relationships w...
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| Format: | Article |
| Language: | English |
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Elsevier
2014-03-01
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| Series: | Oceanologia |
| Subjects: | |
| Online Access: | http://www.iopan.gda.pl/oceanologia/56_2.html#A7 |
| _version_ | 1819087600163487744 |
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| author | Andrey N. Sharov Nadezhda A. Berezina Larisa E. Nazarova |
| author_facet | Andrey N. Sharov Nadezhda A. Berezina Larisa E. Nazarova |
| author_sort | Andrey N. Sharov |
| collection | DOAJ |
| description | This paper aims to reveal current changes (recent decades) in regional climatic variables like water temperature (WT), the duration of the ice-free period (ICE-FREE) and the precipitation rate (P), as exemplified by Petrozavodsk Bay (Lake Onega, European Russia), and to analyse their relationships with the global climatic indices NAO, AO and structural characteristics of biota (chlorophyll a concentration (Chl <i>a</i>), phytoplankton and zoobenthos abundance/biomass) in the lake ecosystem, which lies within the Baltic Sea catchment area. Spearman's rank correlations yielded significant (<i>p</i> < 0.05) relationships between the NAO and planktonic Cyanobacteria abundance, and also between NAO, AO, WT, P and the abundance and biomass of zoobenthos. Chl a correlates positively (<i>R</i> = 0.66;<i> p</i> = 0.03) with WT and negatively with ICE-FREE (<i>R</i> = -0.53; <i>p</i> = 0.05). At the same time, multiple regression analysis confirmed that the global climate governs primarily the regional climatic variables and productivity level in the lake's ecosystem, whereas most of the biotic characteristics respond to variability in the regional climate. |
| first_indexed | 2024-12-21T21:38:43Z |
| format | Article |
| id | doaj.art-d1d930ab9cdf4efe9ef1b86090fea41c |
| institution | Directory Open Access Journal |
| issn | 0078-3234 |
| language | English |
| last_indexed | 2024-12-21T21:38:43Z |
| publishDate | 2014-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Oceanologia |
| spelling | doaj.art-d1d930ab9cdf4efe9ef1b86090fea41c2022-12-21T18:49:25ZengElsevierOceanologia0078-32342014-03-01561291306Links between biota and climate-related variables in the Baltic region using Lake Onega as an exampleAndrey N. Sharov0Nadezhda A. Berezina1Larisa E. Nazarova2Northern Water Problems Institute, Karelian Research Centre, Russian Academy of Sciences, A. Nevskogo prospect 50, Petrozavodsk 185030, RussiaNorthern Water Problems Institute, Karelian Research Centre, Russian Academy of Sciences, A. Nevskogo prospect 50, Petrozavodsk 185030, RussiaNorthern Water Problems Institute, Karelian Research Centre, Russian Academy of Sciences, A. Nevskogo prospect 50, Petrozavodsk 185030, RussiaThis paper aims to reveal current changes (recent decades) in regional climatic variables like water temperature (WT), the duration of the ice-free period (ICE-FREE) and the precipitation rate (P), as exemplified by Petrozavodsk Bay (Lake Onega, European Russia), and to analyse their relationships with the global climatic indices NAO, AO and structural characteristics of biota (chlorophyll a concentration (Chl <i>a</i>), phytoplankton and zoobenthos abundance/biomass) in the lake ecosystem, which lies within the Baltic Sea catchment area. Spearman's rank correlations yielded significant (<i>p</i> < 0.05) relationships between the NAO and planktonic Cyanobacteria abundance, and also between NAO, AO, WT, P and the abundance and biomass of zoobenthos. Chl a correlates positively (<i>R</i> = 0.66;<i> p</i> = 0.03) with WT and negatively with ICE-FREE (<i>R</i> = -0.53; <i>p</i> = 0.05). At the same time, multiple regression analysis confirmed that the global climate governs primarily the regional climatic variables and productivity level in the lake's ecosystem, whereas most of the biotic characteristics respond to variability in the regional climate.http://www.iopan.gda.pl/oceanologia/56_2.html#A7Baltic Sea catchment areaclimate variablesphytoplankton |
| spellingShingle | Andrey N. Sharov Nadezhda A. Berezina Larisa E. Nazarova Links between biota and climate-related variables in the Baltic region using Lake Onega as an example Oceanologia Baltic Sea catchment area climate variables phytoplankton |
| title | Links between biota and climate-related variables in the Baltic region using Lake Onega as an example |
| title_full | Links between biota and climate-related variables in the Baltic region using Lake Onega as an example |
| title_fullStr | Links between biota and climate-related variables in the Baltic region using Lake Onega as an example |
| title_full_unstemmed | Links between biota and climate-related variables in the Baltic region using Lake Onega as an example |
| title_short | Links between biota and climate-related variables in the Baltic region using Lake Onega as an example |
| title_sort | links between biota and climate related variables in the baltic region using lake onega as an example |
| topic | Baltic Sea catchment area climate variables phytoplankton |
| url | http://www.iopan.gda.pl/oceanologia/56_2.html#A7 |
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