Presence of Potential Toxin-Producing Cyanobacteria in an Oligo-Mesotrophic Lake in Baltic Lake District, Germany: An Ecological, Genetic and Toxicological Survey
Massive developments of potentially toxic cyanobacteria in Lake Stechlin, an oligo-mesotrophic lake in the Baltic Lake District of Germany raised concerns about toxic contamination of these important ecosystems. Field samples in the phase of mass developments of cyanobacteria were used for genetic...
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| Format: | Article |
| Language: | English |
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MDPI AG
2014-09-01
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| Series: | Toxins |
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| Online Access: | http://www.mdpi.com/2072-6651/6/10/2912 |
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| author | Pawan K. Dadheech Géza B. Selmeczy Gábor Vasas Judit Padisák Wolfgang Arp Kálmán Tapolczai Peter Casper Lothar Krienitz |
| author_facet | Pawan K. Dadheech Géza B. Selmeczy Gábor Vasas Judit Padisák Wolfgang Arp Kálmán Tapolczai Peter Casper Lothar Krienitz |
| author_sort | Pawan K. Dadheech |
| collection | DOAJ |
| description | Massive developments of potentially toxic cyanobacteria in Lake Stechlin, an oligo-mesotrophic lake in the Baltic Lake District of Germany raised concerns about toxic contamination of these important ecosystems. Field samples in the phase of mass developments of cyanobacteria were used for genetic and toxicological analyses. Microcystins and microcystin genes were detected in field samples of the lake for the first time. However, the toxins were not produced by the dominant taxa (Dolichospermum circinale and Aphanizomenon flos-aquae) but by taxa, which were present only in low biomass in the samples (Microcystis cf. aeruginosa and Planktothrix rubescens). The phytoplankton successions during the study period revealed an increase of cyanobacterial populations. The findings contribute to the changes that have been investigated in Lake Stechlin since the mid-1990s. The possible reasons behind these developments may be climate change, special weather conditions and an increased nutrient pool. |
| first_indexed | 2024-04-11T22:52:03Z |
| format | Article |
| id | doaj.art-b226defd7d63426b8d1b53b2a8252c86 |
| institution | Directory Open Access Journal |
| issn | 2072-6651 |
| language | English |
| last_indexed | 2024-04-11T22:52:03Z |
| publishDate | 2014-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Toxins |
| spelling | doaj.art-b226defd7d63426b8d1b53b2a8252c862022-12-22T03:58:34ZengMDPI AGToxins2072-66512014-09-016102912293110.3390/toxins6102912toxins6102912Presence of Potential Toxin-Producing Cyanobacteria in an Oligo-Mesotrophic Lake in Baltic Lake District, Germany: An Ecological, Genetic and Toxicological SurveyPawan K. Dadheech0Géza B. Selmeczy1Gábor Vasas2Judit Padisák3Wolfgang Arp4Kálmán Tapolczai5Peter Casper6Lothar Krienitz7Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Alte Fischerhütte 2, Stechlin D-16775, GermanyLeibniz-Institute of Freshwater Ecology and Inland Fisheries, Alte Fischerhütte 2, Stechlin D-16775, GermanyDepartment of Botany, University of Debrecen, Egyetem tér 1, Debrecen H-4032, HungaryDepartment of Limnology, University of Pannonia, Egyetem utca 10, Veszprém H-8200, HungaryLimPlan, Gewässer- und Landschaftsökologie, Otawistr. 19, Berlin D-13351, GermanyDepartment of Limnology, University of Pannonia, Egyetem utca 10, Veszprém H-8200, HungaryLeibniz-Institute of Freshwater Ecology and Inland Fisheries, Alte Fischerhütte 2, Stechlin D-16775, GermanyLeibniz-Institute of Freshwater Ecology and Inland Fisheries, Alte Fischerhütte 2, Stechlin D-16775, GermanyMassive developments of potentially toxic cyanobacteria in Lake Stechlin, an oligo-mesotrophic lake in the Baltic Lake District of Germany raised concerns about toxic contamination of these important ecosystems. Field samples in the phase of mass developments of cyanobacteria were used for genetic and toxicological analyses. Microcystins and microcystin genes were detected in field samples of the lake for the first time. However, the toxins were not produced by the dominant taxa (Dolichospermum circinale and Aphanizomenon flos-aquae) but by taxa, which were present only in low biomass in the samples (Microcystis cf. aeruginosa and Planktothrix rubescens). The phytoplankton successions during the study period revealed an increase of cyanobacterial populations. The findings contribute to the changes that have been investigated in Lake Stechlin since the mid-1990s. The possible reasons behind these developments may be climate change, special weather conditions and an increased nutrient pool.http://www.mdpi.com/2072-6651/6/10/2912cyanotoxinsmicrocystinLake StechlinAphanizomenonDolichospermumMicrocystisPlanktothrix |
| spellingShingle | Pawan K. Dadheech Géza B. Selmeczy Gábor Vasas Judit Padisák Wolfgang Arp Kálmán Tapolczai Peter Casper Lothar Krienitz Presence of Potential Toxin-Producing Cyanobacteria in an Oligo-Mesotrophic Lake in Baltic Lake District, Germany: An Ecological, Genetic and Toxicological Survey Toxins cyanotoxins microcystin Lake Stechlin Aphanizomenon Dolichospermum Microcystis Planktothrix |
| title | Presence of Potential Toxin-Producing Cyanobacteria in an Oligo-Mesotrophic Lake in Baltic Lake District, Germany: An Ecological, Genetic and Toxicological Survey |
| title_full | Presence of Potential Toxin-Producing Cyanobacteria in an Oligo-Mesotrophic Lake in Baltic Lake District, Germany: An Ecological, Genetic and Toxicological Survey |
| title_fullStr | Presence of Potential Toxin-Producing Cyanobacteria in an Oligo-Mesotrophic Lake in Baltic Lake District, Germany: An Ecological, Genetic and Toxicological Survey |
| title_full_unstemmed | Presence of Potential Toxin-Producing Cyanobacteria in an Oligo-Mesotrophic Lake in Baltic Lake District, Germany: An Ecological, Genetic and Toxicological Survey |
| title_short | Presence of Potential Toxin-Producing Cyanobacteria in an Oligo-Mesotrophic Lake in Baltic Lake District, Germany: An Ecological, Genetic and Toxicological Survey |
| title_sort | presence of potential toxin producing cyanobacteria in an oligo mesotrophic lake in baltic lake district germany an ecological genetic and toxicological survey |
| topic | cyanotoxins microcystin Lake Stechlin Aphanizomenon Dolichospermum Microcystis Planktothrix |
| url | http://www.mdpi.com/2072-6651/6/10/2912 |
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