Detection of changes in the hydrobiological parameters of the Oder River during the ecological disaster in July 2022 based on multi-parameter probe tests and remote sensing methods
Starting from the second half of July, hydrological conditions (low water levels and low flows) and atmospheric conditions (high temperatures, lack of precipitation) contributed to algae bloom in the Oder River basin. The mass extinction of fish in the middle and lower section of the Oder was probab...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-04-01
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| Series: | Ecological Indicators |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X23002455 |
| _version_ | 1797866105111314432 |
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| author | Damian Absalon Magdalena Matysik Andrzej Woźnica Natalia Janczewska |
| author_facet | Damian Absalon Magdalena Matysik Andrzej Woźnica Natalia Janczewska |
| author_sort | Damian Absalon |
| collection | DOAJ |
| description | Starting from the second half of July, hydrological conditions (low water levels and low flows) and atmospheric conditions (high temperatures, lack of precipitation) contributed to algae bloom in the Oder River basin. The mass extinction of fish in the middle and lower section of the Oder was probably the result of such environmental conditions. Because algae bloom is correlated with an increase in the content of chlorophyll in the river and on its surface, the authors focused on an analysis of changes in the chlorophyll amount in the longitudinal profile of the river. The key data was obtained by soundings carried out at an interval of about one kilometre during the research expedition, which took place on July 16–24, 2022. These data coincided with the values of the NDVI index (normalised difference vegetation index) based on 10-metre satellite images from the Sentinel 2 mission. Imagery from cloudless periods (mainly March, June, July and August) processed using the NDVI index was compared. Regularly elevated chlorophyll levels in the upstream section (occurring in each period) and temporarily elevated chlorophyll values as moving downstream were observed. This article confirms the initial conclusions of Kolada et al. (2022) that the mass fish kill in the Oder River in the summer of 2022 was conditioned by natural environmental pressure causing massive algae bloom and the release of their toxins. The article also proves that the use of satellite images for this type of analysis is the correct approach, but due to low resolution, they cannot be used as reference material. Changes in the hydrobiological parameters of the river, which are a direct indicator of the causes of the ecological disaster, are the data of the multi-parameter probe obtained two weeks before the first mass catches of dead fish. |
| first_indexed | 2024-04-09T23:19:49Z |
| format | Article |
| id | doaj.art-8e3ba18e0b2c47999d4d07a3f92d585d |
| institution | Directory Open Access Journal |
| issn | 1470-160X |
| language | English |
| last_indexed | 2024-04-09T23:19:49Z |
| publishDate | 2023-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj.art-8e3ba18e0b2c47999d4d07a3f92d585d2023-03-22T04:36:17ZengElsevierEcological Indicators1470-160X2023-04-01148110103Detection of changes in the hydrobiological parameters of the Oder River during the ecological disaster in July 2022 based on multi-parameter probe tests and remote sensing methodsDamian Absalon0Magdalena Matysik1Andrzej Woźnica2Natalia Janczewska3University of Silesia in Katowice, Faculty of Natural Sciences, Institute of Earth Sciences, Będzińska 60, 41-200 Sosnowiec, Poland; Silesian Water Centre, University of Silesia in Katowice, Bankowa 5, 40-007 Katowice, PolandUniversity of Silesia in Katowice, Faculty of Natural Sciences, Institute of Earth Sciences, Będzińska 60, 41-200 Sosnowiec, Poland; Silesian Water Centre, University of Silesia in Katowice, Bankowa 5, 40-007 Katowice, PolandUniversity of Silesia in Katowice, Faculty of Natural Sciences, Institute of Biology, Biotechnology and Environmental Protection, Jagiellońska 28, 40-007 Katowice, Poland; Silesian Water Centre, University of Silesia in Katowice, Bankowa 5, 40-007 Katowice, PolandUniversity of Silesia in Katowice, Doctoral School, Bankowa 14, 40-007 Katowice, Poland; Regional Water Management Authority in Gliwice, State Water Holding Polish Waters, Żelazna 59A, 00-848 Warszawa, Poland; Corresponding author at: Polish Water Regional Water Management Authority, Sienkiewicza Street No. 2, 44-100 Gliwice, Poland.Starting from the second half of July, hydrological conditions (low water levels and low flows) and atmospheric conditions (high temperatures, lack of precipitation) contributed to algae bloom in the Oder River basin. The mass extinction of fish in the middle and lower section of the Oder was probably the result of such environmental conditions. Because algae bloom is correlated with an increase in the content of chlorophyll in the river and on its surface, the authors focused on an analysis of changes in the chlorophyll amount in the longitudinal profile of the river. The key data was obtained by soundings carried out at an interval of about one kilometre during the research expedition, which took place on July 16–24, 2022. These data coincided with the values of the NDVI index (normalised difference vegetation index) based on 10-metre satellite images from the Sentinel 2 mission. Imagery from cloudless periods (mainly March, June, July and August) processed using the NDVI index was compared. Regularly elevated chlorophyll levels in the upstream section (occurring in each period) and temporarily elevated chlorophyll values as moving downstream were observed. This article confirms the initial conclusions of Kolada et al. (2022) that the mass fish kill in the Oder River in the summer of 2022 was conditioned by natural environmental pressure causing massive algae bloom and the release of their toxins. The article also proves that the use of satellite images for this type of analysis is the correct approach, but due to low resolution, they cannot be used as reference material. Changes in the hydrobiological parameters of the river, which are a direct indicator of the causes of the ecological disaster, are the data of the multi-parameter probe obtained two weeks before the first mass catches of dead fish.http://www.sciencedirect.com/science/article/pii/S1470160X23002455Oder RiverEcological disasterHABRemote sensingSatellite imagery |
| spellingShingle | Damian Absalon Magdalena Matysik Andrzej Woźnica Natalia Janczewska Detection of changes in the hydrobiological parameters of the Oder River during the ecological disaster in July 2022 based on multi-parameter probe tests and remote sensing methods Ecological Indicators Oder River Ecological disaster HAB Remote sensing Satellite imagery |
| title | Detection of changes in the hydrobiological parameters of the Oder River during the ecological disaster in July 2022 based on multi-parameter probe tests and remote sensing methods |
| title_full | Detection of changes in the hydrobiological parameters of the Oder River during the ecological disaster in July 2022 based on multi-parameter probe tests and remote sensing methods |
| title_fullStr | Detection of changes in the hydrobiological parameters of the Oder River during the ecological disaster in July 2022 based on multi-parameter probe tests and remote sensing methods |
| title_full_unstemmed | Detection of changes in the hydrobiological parameters of the Oder River during the ecological disaster in July 2022 based on multi-parameter probe tests and remote sensing methods |
| title_short | Detection of changes in the hydrobiological parameters of the Oder River during the ecological disaster in July 2022 based on multi-parameter probe tests and remote sensing methods |
| title_sort | detection of changes in the hydrobiological parameters of the oder river during the ecological disaster in july 2022 based on multi parameter probe tests and remote sensing methods |
| topic | Oder River Ecological disaster HAB Remote sensing Satellite imagery |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X23002455 |
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