Table 2
Details of the sampling events conducted between May 2019 and June 2020.
| Immersion period | Season | Slides placed | Slides collected |
|---|---|---|---|
| One-month immersion period | Spring | May 10, 2019 | June 10, 2019 |
| Summer | June 10, 2019 | July 15, 2019 | |
| Autumn | September 30, 2019 | November 3, 2019 | |
| Winter | February 2, 2019 | March 8, 2020 | |
| Two-months immersion period | Spring | March 8, 2020 | June 5, 2020* |
| Summer | June 10, 2019 | August 15, 2019 | |
| Autumn | September 30, 2019 | December 2, 2019 | |
| Winter | December 2, 2019 | February 2, 2020 |
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