Long-Term Water Quality Changes as a Result of a Sustainable Restoration—A Case Study of Dimictic Lake Durowskie
Nature-based solutions in lake restoration enable gradual ecosystem reconstruction without drastic and expensive intervention. Sustainable lake restoration involves limited external interference strong enough to initiate and maintain positive changes in the ecosystem. It was introduced in Lake Durow...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-03-01
|
| Series: | Water |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4441/11/3/616 |
| _version_ | 1811282400279265280 |
|---|---|
| author | Renata Dondajewska Katarzyna Kowalczewska-Madura Ryszard Gołdyn Anna Kozak Beata Messyasz Sławek Cerbin |
| author_facet | Renata Dondajewska Katarzyna Kowalczewska-Madura Ryszard Gołdyn Anna Kozak Beata Messyasz Sławek Cerbin |
| author_sort | Renata Dondajewska |
| collection | DOAJ |
| description | Nature-based solutions in lake restoration enable gradual ecosystem reconstruction without drastic and expensive intervention. Sustainable lake restoration involves limited external interference strong enough to initiate and maintain positive changes in the ecosystem. It was introduced in Lake Durowskie, an urban, flow-through lake situated in Western Poland, using hypolimnetic aeration, phosphorus precipitation with small doses of chemicals and biomanipulation in 2009, and is continued until today. Oxygen conditions in the lake hypolimnion after initial deterioration were gradually improved, and finally a shortening of the duration and range of oxygen deficits was observed. Nitrogen transformations were induced in the hypolimnion by water aeration as well, reducing ammonium N (30% during 2013–2017 in comparison to 2008) and increasing nitrates (90% in 2013–2017 in comparison to 2008). Phosphorus content was diminished (19% during 2015–2017 in relation to 2008 for SRP) due to effective iron-binding and a smaller amount of fresh organic matter being decomposed. Its reduction was related to lower phytoplankton biomass, expressed in a decrease of chlorophyll-a concentrations (55% reduction during 2013–2017 in comparison to 2008) and an increase in water transparency (two-fold during 2013–2017 in relation to 2008) throughout the nine years of treatment. A long-term restoration program, based on non-aggressive, multiple in-lake techniques was applied and, despite the lack of a reduction in total external loading, was able to suppress progressive eutrophication. |
| first_indexed | 2024-04-13T01:51:44Z |
| format | Article |
| id | doaj.art-750c587220454d9286053a64d177b3e2 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-04-13T01:51:44Z |
| publishDate | 2019-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-750c587220454d9286053a64d177b3e22022-12-22T03:07:52ZengMDPI AGWater2073-44412019-03-0111361610.3390/w11030616w11030616Long-Term Water Quality Changes as a Result of a Sustainable Restoration—A Case Study of Dimictic Lake DurowskieRenata Dondajewska0Katarzyna Kowalczewska-Madura1Ryszard Gołdyn2Anna Kozak3Beata Messyasz4Sławek Cerbin5Department of Water Protection, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, PolandDepartment of Water Protection, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, PolandDepartment of Water Protection, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, PolandDepartment of Water Protection, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, PolandDepartment of Hydrobiology, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, PolandDepartment of Hydrobiology, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, PolandNature-based solutions in lake restoration enable gradual ecosystem reconstruction without drastic and expensive intervention. Sustainable lake restoration involves limited external interference strong enough to initiate and maintain positive changes in the ecosystem. It was introduced in Lake Durowskie, an urban, flow-through lake situated in Western Poland, using hypolimnetic aeration, phosphorus precipitation with small doses of chemicals and biomanipulation in 2009, and is continued until today. Oxygen conditions in the lake hypolimnion after initial deterioration were gradually improved, and finally a shortening of the duration and range of oxygen deficits was observed. Nitrogen transformations were induced in the hypolimnion by water aeration as well, reducing ammonium N (30% during 2013–2017 in comparison to 2008) and increasing nitrates (90% in 2013–2017 in comparison to 2008). Phosphorus content was diminished (19% during 2015–2017 in relation to 2008 for SRP) due to effective iron-binding and a smaller amount of fresh organic matter being decomposed. Its reduction was related to lower phytoplankton biomass, expressed in a decrease of chlorophyll-a concentrations (55% reduction during 2013–2017 in comparison to 2008) and an increase in water transparency (two-fold during 2013–2017 in relation to 2008) throughout the nine years of treatment. A long-term restoration program, based on non-aggressive, multiple in-lake techniques was applied and, despite the lack of a reduction in total external loading, was able to suppress progressive eutrophication.https://www.mdpi.com/2073-4441/11/3/616biomanipulationchlorophyll-ahypolimnion aerationnutrientsphosphorus inactivation |
| spellingShingle | Renata Dondajewska Katarzyna Kowalczewska-Madura Ryszard Gołdyn Anna Kozak Beata Messyasz Sławek Cerbin Long-Term Water Quality Changes as a Result of a Sustainable Restoration—A Case Study of Dimictic Lake Durowskie Water biomanipulation chlorophyll-a hypolimnion aeration nutrients phosphorus inactivation |
| title | Long-Term Water Quality Changes as a Result of a Sustainable Restoration—A Case Study of Dimictic Lake Durowskie |
| title_full | Long-Term Water Quality Changes as a Result of a Sustainable Restoration—A Case Study of Dimictic Lake Durowskie |
| title_fullStr | Long-Term Water Quality Changes as a Result of a Sustainable Restoration—A Case Study of Dimictic Lake Durowskie |
| title_full_unstemmed | Long-Term Water Quality Changes as a Result of a Sustainable Restoration—A Case Study of Dimictic Lake Durowskie |
| title_short | Long-Term Water Quality Changes as a Result of a Sustainable Restoration—A Case Study of Dimictic Lake Durowskie |
| title_sort | long term water quality changes as a result of a sustainable restoration a case study of dimictic lake durowskie |
| topic | biomanipulation chlorophyll-a hypolimnion aeration nutrients phosphorus inactivation |
| url | https://www.mdpi.com/2073-4441/11/3/616 |
| work_keys_str_mv | AT renatadondajewska longtermwaterqualitychangesasaresultofasustainablerestorationacasestudyofdimicticlakedurowskie AT katarzynakowalczewskamadura longtermwaterqualitychangesasaresultofasustainablerestorationacasestudyofdimicticlakedurowskie AT ryszardgołdyn longtermwaterqualitychangesasaresultofasustainablerestorationacasestudyofdimicticlakedurowskie AT annakozak longtermwaterqualitychangesasaresultofasustainablerestorationacasestudyofdimicticlakedurowskie AT beatamessyasz longtermwaterqualitychangesasaresultofasustainablerestorationacasestudyofdimicticlakedurowskie AT sławekcerbin longtermwaterqualitychangesasaresultofasustainablerestorationacasestudyofdimicticlakedurowskie |