Table 3
Temperature, dissolved oxygen and hydrogen sulfide concentrations in the water of Lake Gulbinas during the different study periods (mean values ± standard deviation of data from May, August and September). Asterisks indicate significant differences (Kruskal-Wallis test, p ≤ 0.05) in each water parameter between two study periods, urban and agriculture.
| Parameter | Sampling site | Depth (m) | Period, years | |||
|---|---|---|---|---|---|---|
|
|
||||||
| Agriculture | Transitional | Urban | ||||
|
|
||||||
| 1962 | 2001–2002 | 2007 | 2014–2015 | |||
| Temperature (°C) | Shallow part | 0.5 4.0 |
15.0 ± 2.3 14.4 ± 2.2 |
18.6 ± 3.5 16.3 ± 2.2 |
18.9 ± 2.6 12.3 ± 2.3 |
20.2 ± 2.4*
14.1 ± 1.2 |
| Deep part | 0–2.0 3.0–5.0 6.0–9.0 |
15.3 ± 0.2 13.3 ± 0.7 9.9 ± 1.2 |
17.7 ± 0.2 15.0 ± 0.6 9.6 ± 0.1 |
18.7 ± 0.4*
14.8 ± 1.0 9.4 ± 1.0 |
18 ± 0.5*
14 ± 0.5 9.5 ± 0.5 |
|
| Oxygen (mg L−1) | Shallow part | 0.5 4.0 |
10.0 ± 0.9 9.2 ± 0 |
9.8 ± 1.1 6.4 ± 1.6 |
10.9 ± 0.4 1.0 ± 0.9* |
10.0 ± 0.2 1.5 ± 1.1* |
| Deep part | 0–2.0 3.0–5.0 6.0–9.0 |
9.6 ± 0.1 8.6 ± 0.5 3.5 ± 2.2 |
10.3 ± 0.1 6.8 ± 2.6 0 |
9.8 ± 1.2 3.6 ± 2.0* 0* |
9.0 ± 0.5 3.5 ± 1.0* 0* |
|
| Hydrogen sulfide (mg L−1) |
Deep part | 0–3.0 4.0–5.0 6.0–9.0 |
– – – |
0 0 0.4 ± 0.2 |
0 0.2 ± 0.1 1.2 ± 0.5 |
0 0.2 ± 0.1 0.5 ± 0.1 |
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.