Comparative studies of underwater light regimes in lakes of the East-Suwałki Lakeland
Secchi disc transparency and optical properties of water, based on measurements for downward irradiance using an underwater radiometer PER-700, were studied in 23 lakes of the Suwałki Landscape Park (SLP) in 2013. Measurements of optically significant constituents of water were also performed (YSI E...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-12-01
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| Series: | Limnological Review |
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| Online Access: | https://doi.org/10.1515/limre-2016-0019 |
| _version_ | 1797225536655720448 |
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| author | Borowiak Dariusz Borowiak Magdalena |
| author_facet | Borowiak Dariusz Borowiak Magdalena |
| author_sort | Borowiak Dariusz |
| collection | DOAJ |
| description | Secchi disc transparency and optical properties of water, based on measurements for downward irradiance using an underwater radiometer PER-700, were studied in 23 lakes of the Suwałki Landscape Park (SLP) in 2013. Measurements of optically significant constituents of water were also performed (YSI EXO-2) and analysed. Data on water transparency from published studies were used to assess long-term changes in the optical conditions in the deepest water body in Poland – Lake Hańcza. In terms of the optical characteristics of the water, the analysed SLP lakes can essentially be divided into two distinct groups representing different optical lake types. These are optical categories of lakes most common in Poland, namely types II and IIIb. Regional equations describing the relationships between the attenuation coefficient for downward irradiance as well as optically significant constituents of water were developed. The optical properties of the SLP lakes are mainly affected by suspended solids, mostly phytoplankton. Interannual fluctuations in Sechi disc transparency, as well as the attenuation coefficient for downward irradiance and other apparent optical properties of mid-summer water calculated from it, are determined by the spring thermal conditions and intensity of phytoplankton blooms during this period. Application of the attenuation coefficient for downward irradiance as a criterion for the assessment of the trophic status of the SLP lakes indicates that these are generally eutrophic lakes. The largest and deepest lakes of the park, however, are mesotrophic. Lake Hańcza is currently in the stage of α-mesotrophy. |
| first_indexed | 2024-03-08T06:38:01Z |
| format | Article |
| id | doaj.art-28629671f69c44ad9a6fce0aa428c9ff |
| institution | Directory Open Access Journal |
| issn | 2300-7575 |
| language | English |
| last_indexed | 2024-04-24T14:10:35Z |
| publishDate | 2016-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Limnological Review |
| spelling | doaj.art-28629671f69c44ad9a6fce0aa428c9ff2024-04-03T09:16:33ZengMDPI AGLimnological Review2300-75752016-12-0116417318310.1515/limre-2016-0019limre-2016-0019Comparative studies of underwater light regimes in lakes of the East-Suwałki LakelandBorowiak Dariusz0Borowiak Magdalena1 Department of Limnology, University of Gdańsk, Bażyńskiego 4, 80-952 Gdańsk, Poland, geomb@univ.gda.pl Department of Limnology, University of Gdańsk, Bażyńskiego 4, 80-952 Gdańsk, Poland, geomb@univ.gda.plSecchi disc transparency and optical properties of water, based on measurements for downward irradiance using an underwater radiometer PER-700, were studied in 23 lakes of the Suwałki Landscape Park (SLP) in 2013. Measurements of optically significant constituents of water were also performed (YSI EXO-2) and analysed. Data on water transparency from published studies were used to assess long-term changes in the optical conditions in the deepest water body in Poland – Lake Hańcza. In terms of the optical characteristics of the water, the analysed SLP lakes can essentially be divided into two distinct groups representing different optical lake types. These are optical categories of lakes most common in Poland, namely types II and IIIb. Regional equations describing the relationships between the attenuation coefficient for downward irradiance as well as optically significant constituents of water were developed. The optical properties of the SLP lakes are mainly affected by suspended solids, mostly phytoplankton. Interannual fluctuations in Sechi disc transparency, as well as the attenuation coefficient for downward irradiance and other apparent optical properties of mid-summer water calculated from it, are determined by the spring thermal conditions and intensity of phytoplankton blooms during this period. Application of the attenuation coefficient for downward irradiance as a criterion for the assessment of the trophic status of the SLP lakes indicates that these are generally eutrophic lakes. The largest and deepest lakes of the park, however, are mesotrophic. Lake Hańcza is currently in the stage of α-mesotrophy.https://doi.org/10.1515/limre-2016-0019secchi disc transparencyvertical attenuation coefficienteuphotic zone depthoptical classification of inland waterstrophic state |
| spellingShingle | Borowiak Dariusz Borowiak Magdalena Comparative studies of underwater light regimes in lakes of the East-Suwałki Lakeland Limnological Review secchi disc transparency vertical attenuation coefficient euphotic zone depth optical classification of inland waters trophic state |
| title | Comparative studies of underwater light regimes in lakes of the East-Suwałki Lakeland |
| title_full | Comparative studies of underwater light regimes in lakes of the East-Suwałki Lakeland |
| title_fullStr | Comparative studies of underwater light regimes in lakes of the East-Suwałki Lakeland |
| title_full_unstemmed | Comparative studies of underwater light regimes in lakes of the East-Suwałki Lakeland |
| title_short | Comparative studies of underwater light regimes in lakes of the East-Suwałki Lakeland |
| title_sort | comparative studies of underwater light regimes in lakes of the east suwalki lakeland |
| topic | secchi disc transparency vertical attenuation coefficient euphotic zone depth optical classification of inland waters trophic state |
| url | https://doi.org/10.1515/limre-2016-0019 |
| work_keys_str_mv | AT borowiakdariusz comparativestudiesofunderwaterlightregimesinlakesoftheeastsuwałkilakeland AT borowiakmagdalena comparativestudiesofunderwaterlightregimesinlakesoftheeastsuwałkilakeland |