Factors behind the variability of phosphorus accumulation in Finnish lakes
Purpose Phosphorus retention (TPacc) is one of the major water quality regulators in lakes. The current study aimed at ascer- taining the specific lake characteristics regulating TP acc . Moreover, we were interested whether NAO (North Atlantic Oscillation), a proxy of climatic forcing, can explain...
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ftestonianunivls:oai:dspace.emu.ee:10492/7848 2023-07-30T04:05:35+02:00 Factors behind the variability of phosphorus accumulation in Finnish lakes Tammeorg, Olga Haldna, Marina Nõges, Peeter Appleby, Peter Möls, Tõnu Niemistö, Juha Tammeorg, Priit Horppila, Jukka Centre for Limnology 2018 application/pdf http://hdl.handle.net/10492/7848 https://doi.org/10.1007/s11368-018-1973-8 unknown Springer Journal of Soils and Sediments (2018) 18:2117–2129 1614-7480 http://hdl.handle.net/10492/7848 https://doi.org/10.1007/s11368-018-1973-8 © Springer-Verlag GmbH Germany, part of Springer Nature 2018 lake characteristics lakes NAO phosphorus accumulation rate phosphorus retention articles Article 2018 ftestonianunivls https://doi.org/10.1007/s11368-018-1973-8 2023-07-08T19:56:36Z Purpose Phosphorus retention (TPacc) is one of the major water quality regulators in lakes. The current study aimed at ascer- taining the specific lake characteristics regulating TP acc . Moreover, we were interested whether NAO (North Atlantic Oscillation), a proxy of climatic forcing, can explain variability in TPacc, additionally to that ascribed to lake characteristics. Materials and methods Sediment cores were obtained from 21 Finnish lakes, subject to radiometric dating and measurements of TP concentrations. Principal components (PCs) were generated using lake characteristics that are usually included into the modelling of TPacc (e.g. lake area, lake depth, catchment area, P inflow) but also the parameters that the classical models usually missed (e.g. anoxic factor). We used significant principal components (PCs), specific combinations of lake characteristics and monthly NAO values as predictors of TPacc. Results and discussion Lake characteristics explained the bulk of TPacc variability. The most influential factors (positive drivers) behind TPacc included PC1 (representing mainly deep lakes), PC2 (small lakes with high levels of anoxia and water column stability), PC3 (productive lakes with large catchment area and short water residence time), PC4 (lakes with high water column stability, low anoxic factor and relatively high sediment focusing) and PC5 (lakes with high levels of P inflow, anoxia and long water residence time). Additionally, we found a potential negative effect of NAO in October on the annual TPacc. This NAO was significantly positively related to temperatures in surface and near-bottom water layer (also their difference) in autumn, suggest- ing the possible implications for the internal P dynamics. Increased mineralization of organic matter is the most likely explanation for the reduced TPacc associated with NAO-driven water temperature increase. Conclusions The analysis presented here contributes to the knowledge of the factors controlling P retention. Moreover, this spatially and ... Article in Journal/Newspaper North Atlantic North Atlantic oscillation Estonian University of Life Sciences: DSpace Discussion Lake ENVELOPE(76.352,76.352,-69.389,-69.389) Journal of Soils and Sediments 18 5 2117 2129 |
institution |
Open Polar |
collection |
Estonian University of Life Sciences: DSpace |
op_collection_id |
ftestonianunivls |
language |
unknown |
topic |
lake characteristics lakes NAO phosphorus accumulation rate phosphorus retention articles |
spellingShingle |
lake characteristics lakes NAO phosphorus accumulation rate phosphorus retention articles Tammeorg, Olga Haldna, Marina Nõges, Peeter Appleby, Peter Möls, Tõnu Niemistö, Juha Tammeorg, Priit Horppila, Jukka Factors behind the variability of phosphorus accumulation in Finnish lakes |
topic_facet |
lake characteristics lakes NAO phosphorus accumulation rate phosphorus retention articles |
description |
Purpose Phosphorus retention (TPacc) is one of the major water quality regulators in lakes. The current study aimed at ascer- taining the specific lake characteristics regulating TP acc . Moreover, we were interested whether NAO (North Atlantic Oscillation), a proxy of climatic forcing, can explain variability in TPacc, additionally to that ascribed to lake characteristics. Materials and methods Sediment cores were obtained from 21 Finnish lakes, subject to radiometric dating and measurements of TP concentrations. Principal components (PCs) were generated using lake characteristics that are usually included into the modelling of TPacc (e.g. lake area, lake depth, catchment area, P inflow) but also the parameters that the classical models usually missed (e.g. anoxic factor). We used significant principal components (PCs), specific combinations of lake characteristics and monthly NAO values as predictors of TPacc. Results and discussion Lake characteristics explained the bulk of TPacc variability. The most influential factors (positive drivers) behind TPacc included PC1 (representing mainly deep lakes), PC2 (small lakes with high levels of anoxia and water column stability), PC3 (productive lakes with large catchment area and short water residence time), PC4 (lakes with high water column stability, low anoxic factor and relatively high sediment focusing) and PC5 (lakes with high levels of P inflow, anoxia and long water residence time). Additionally, we found a potential negative effect of NAO in October on the annual TPacc. This NAO was significantly positively related to temperatures in surface and near-bottom water layer (also their difference) in autumn, suggest- ing the possible implications for the internal P dynamics. Increased mineralization of organic matter is the most likely explanation for the reduced TPacc associated with NAO-driven water temperature increase. Conclusions The analysis presented here contributes to the knowledge of the factors controlling P retention. Moreover, this spatially and ... |
author2 |
Centre for Limnology |
format |
Article in Journal/Newspaper |
author |
Tammeorg, Olga Haldna, Marina Nõges, Peeter Appleby, Peter Möls, Tõnu Niemistö, Juha Tammeorg, Priit Horppila, Jukka |
author_facet |
Tammeorg, Olga Haldna, Marina Nõges, Peeter Appleby, Peter Möls, Tõnu Niemistö, Juha Tammeorg, Priit Horppila, Jukka |
author_sort |
Tammeorg, Olga |
title |
Factors behind the variability of phosphorus accumulation in Finnish lakes |
title_short |
Factors behind the variability of phosphorus accumulation in Finnish lakes |
title_full |
Factors behind the variability of phosphorus accumulation in Finnish lakes |
title_fullStr |
Factors behind the variability of phosphorus accumulation in Finnish lakes |
title_full_unstemmed |
Factors behind the variability of phosphorus accumulation in Finnish lakes |
title_sort |
factors behind the variability of phosphorus accumulation in finnish lakes |
publisher |
Springer |
publishDate |
2018 |
url |
http://hdl.handle.net/10492/7848 https://doi.org/10.1007/s11368-018-1973-8 |
long_lat |
ENVELOPE(76.352,76.352,-69.389,-69.389) |
geographic |
Discussion Lake |
geographic_facet |
Discussion Lake |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
Journal of Soils and Sediments (2018) 18:2117–2129 1614-7480 http://hdl.handle.net/10492/7848 https://doi.org/10.1007/s11368-018-1973-8 |
op_rights |
© Springer-Verlag GmbH Germany, part of Springer Nature 2018 |
op_doi |
https://doi.org/10.1007/s11368-018-1973-8 |
container_title |
Journal of Soils and Sediments |
container_volume |
18 |
container_issue |
5 |
container_start_page |
2117 |
op_container_end_page |
2129 |
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1772817610033856512 |