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Cyanobacterial populations in Lake Hjorten and Lake Vångaren depending on increased temperature.
Linköping University, Department of Physics, Chemistry and Biology.
2016 (English)Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
Abstract [en]

Västervik Municipality has had problems with odorous compounds in its primary water source, Lake Hjorten. Geosmin and cyanobacterial blooms have been detected in the lake. This report aims to experimentally investigate the cyanobacterial populations in the primary and secondary freshwater lakes depending on the climate change factor temperature. An understanding of number of cells is the foundation to understand the potential harmful chemical levels. This provides an opportunity to predict the water quality in the lakes in the future due to climate change. The results show that cyanobacteria did not benefit from an increase in temperature from 10°C to 18°C solely during autumn. However, the diatom Aulacoseira did increase in numbers although it is not known to produce odorous compounds. Consequently a warmer Swedish autumn would not cause worse drinking water quality in absence of other contributing factors according to this study.

Place, publisher, year, edition, pages
2016. , 22 p.
Keyword [en]
Cyanobacteria, phytoplankton, temperature, water quality, climate change, lake
National Category
Natural Sciences
URN: urn:nbn:se:liu:diva-130201ISRN: LITH-IFM-G-EX--16/3137--SEOAI: diva2:948880
External cooperation
Sweco Environment AB, Västervik Miljö & Energi
Subject / course
2016-03-03, Boltzmann, Linköping, 11:00 (Swedish)
Available from: 2016-08-08 Created: 2016-07-14 Last updated: 2016-08-08Bibliographically approved

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Department of Physics, Chemistry and Biology
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