Post-Dredging Nitrogen Dynamics at the Sediment–Water Interface: The Shallow, Eutrophic Mogan Lake, Turkey

Akasya Topçu; Seda Atlığ

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Post-Dredging Nitrogen Dynamics at the Sediment–Water Interface: The Shallow, Eutrophic Mogan Lake, Turkey

Akasya Topçu

Seda Atlığ

| 20 mars 2023

Oceanological and Hydrobiological Studies

Édition 52 (2023): Edition 1 (March 2023)

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Article Category: Original research paper

Publié en ligne: 20 mars 2023

Pages: 124 - 136

Reçu: 06 juil. 2022

Accepté: 21 nov. 2022

DOI: https://doi.org/10.26881/oahs-2023.1.10

© 2023 Akasya Topçu et al., published by Sciendo.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Study site and sampling stations in Mogan Lake (■: Station 1: 39°78′32″ N 32°80′13″ E; Station 2: 39°76′48″ N 32°79′64″ E; Station 3: 39°75′70″ N 32°79′45″ E; Station 4: 39°77′02″ N 32°78′69″ E; Station 5: 39°77′55″ N 32°80′01″ E; Station 6: 39°78′44″ N 32°79′21″ E)

Ammonium and nitrate flux in Mogan Lake in October

Ammonium and nitrate flux in Mogan Lake in July

NH3-N, NH4-N and NO3-N concentrations (filtered and non-filtered) of Mogan Lake’s sediment overlying water, by period and station

Parameter	Period	Station 1	Station 2	Station 3	Station 4	Station 5	Station 6
NH₃-N (mg l⁻¹)	Wet	0.339 ± 0.001 Fb*	0.354 ± 0.001 Eb	0.350 ± 0.002 Db	0.383 ± 0.001 Cb	0.475 ± 0.001 Ba	0.499 ± 0.002 Aa
NH₃-N (mg l⁻¹)	Dry	0.531 ± 0.001 Aa	0.530 ± 0.005 Aa	0.479 ± 0.001 Ba	0.422 ± 0.002 Ca	0.395 ± 0.001 Db	0.399 ± 0.002 Eb
NH₃-N Filtered (mg l⁻¹)	Wet	0.341 ± 0.001 Eb	0.374 ± 0.001Db	0.286 ± 0.002 Fb	0.447 ± 0.011 Cb	0.700 ± 0.002 Aa	0.580 ± 0.002 Ba
NH₃-N Filtered (mg l⁻¹)	Dry	0.533 ± 0.001 Aa	0.510 ± 0.001 Ba	0.416 ± 0.001 Ea	0.478 ± 0.001 Ca	0.418 ± 0.001 Db	0.361 ± 0.002 Fb
NH₄-N (mg l⁻¹)	Wet	0.437 ± 0.002 Fb	0.455 ± 0.001 Db	0.451 ± 0.003 Eb	0.493 ± 0.001 Cb	0.612 ± 0.002 Ba	0.642 ± 0.003 Aa
NH₄-N (mg l⁻¹)	Dry	0.684 ± 0.001 Aa	0.682 ± 0.007 Aa	0.617 ± 0.002 Ba	0.544 ± 0.002 Ca	0.509 ± 0.001 Eb	0.514 ± 0.002 Db
NH₄-N Filtered (mg l⁻¹)	Wet	0.439 ± 0.001 Eb	0.482 ± 0.002 Db	0.369 ± 0.002 Fb	0.575 ± 0.014 Cb	0.902 ± 0.002 Aa	0.747 ± 0.003 Ba
NH₄-N Filtered (mg l⁻¹)	Dry	0.687 ± 0.002 Aa	0.657 ± 0.001 Ba	0.536 ± 0.001 Ea	0.590 ± 0.001 Ca	0.539 ± 0.001 Db	0.465 ± 0.003 Fb
NO₃-N (mg l⁻¹)	Wet	1.277 ± 0.005 Fb	2.272 ± 0.007 Da	1.584 ± 0.005 Ea	3.235 ± 0.000 Ba	2.495 ± 0.006 Ca	7.743 ± 0.006 Aa
NO₃-N (mg l⁻¹)	Dry	1.186 ± 0.005 Aa	1.053 ± 0.000 Eb	1.160 ± 0.005 Bb	0.941 ± 0.004 Fb	1.075 ± 0.005 Db	1.130 ± 0.005 Cb
NO₃-N Filtered (mg l⁻¹)	Wet	1.035 ± 0.000 Fb	1.324 ± 0.000 Db	1.228 ± 0.005 Eb	4.937 ± 0.000 Aa	4.371 ± 0.005 Ba	4.056 ± 0.006 Ca
NO₃-N Filtered (mg l⁻¹)	Dry	1.523 ± 0.005 Aa	1.528 ± 0.005 Aa	1.525 ± 0.006 Aa	1.405 ± 0.005 Cb	1.405 ± 0.005 Cb	1.461 ± 0.008 Bb

O2, pH, water temperature and redox values of Mogan Lake’s sediment overlying water, by period and station

Parameter	Period	Station 1	Station 2	Station 3	Station 4	Station 5	Station 6
O₂ (mg l⁻¹)	Wet	10.50 ± 0.08 Aa*	8.54 ± 0.01 Ca	8.84 ± 0.03 Ba	4.62 ± 0.01 Ea	8.27 ± 0.01 Da	8.56 ± 0.03 Ca
O₂ (mg l⁻¹)	Dry	8.47 ± 0.13 Ab	7.99 ± 0.01 Bb	8.23 ± 0.01 ABb	4.62 ± 0.01 Da	5.46 ± 0.04Cb	4.45 ± 0.02 Db
pH	Wet	8.65 ± 0.06 Da	9.268 ± 0.04 Ba	9.27 ± 0.01 Ba	9.00 ± 0.02 Ca	9.40 ± 0.01 Aa	9.25 ± 0.06Ba
pH	Dry	8.52 ± 0.01 Db	8.67 ± 0.01 Cb	8.70 ± 0.01 Bb	8.69 ± 0.00 Bb	8.72 ± 0.01 Ab	8.70 ± 0.01 Bb
Water Temperature (^oC)	Wet	5.85 ± 0.06 Ab	5.58 ± 0.05 CDb	5.48 ± 0.05 Db	5.50 ± 0.08 Db	5.65 ± 0.06 BCb	5.70 ± 0.08 Bb
Water Temperature (^oC)	Dry	18.55 ± 0.06 Aa	17.70 ± 0.00 Ca	18.48 ± 0.05 Ba	17.68 ± 0.05 Ca	17.30 ± 0.00 Da	17.65 ± 0.06 Ca
Redox (mV)	Wet	−115.00 ± 0.00 Fa	−97.00 ± 0.00 Da	−96.00 ± 0.00 Ca	−98.00 ± 0.000 Ea	−95.00 ± 0.00 Bb	−84.00 ± 0.82 Ab
Redox (mV)	Dry	−86.00 ± 0.00 Ab	−94.00 ± 0.00 Bb	−96.00 ± 0.00 Da	−96.00 ± 0.00 Db	−96.00 ± 0.00 Da	−95.00 ± 0.00 Ca

TO, TP, SRP and TDP concentrations of Mogan Lake’s sediment overlying water, by period and station

Parameter	Period	Station 1	Station 2	Station 3	Station 4	Station 5	Station 6
TO (mg l⁻¹)	Wet	0.090 ± 0.000 Db*	0.097 ± 0.001 Bb	0.285 ± 0.001 Aa	0.090 ± 0.001 Db	0.091 ± 0.001 Db	0.095 ± 0.001 Cb
TO (mg l⁻¹)	Dry	0.095 ± 0.001 Ea	0.106 ± 0.000 Da	0.092 ± 0.001 Fb	0.284 ± 0.000 Ca	0.362 ± 0.002 Aa	0.360 ± 0.000 Ba
TP (mg l⁻¹)	Wet	0.479 ± 0.000 Aa	0.381 ± 0.001 Ba	0.255 ± 0.001 Da	0.203 ± 0.001 Ea	0.480 ± 0.001 Aa	0.379 ± 0.001 Ca
TP (mg l⁻¹)	Dry	0.113 ± 0.000 Eb	0.128 ± 0.000 Bb	0.123 ± 0.001 Db	0.150 ± 0.001 Ab	0.125 ± 0.001 Cb	0.124 ± 0.001 CDb
SRP (mg l⁻¹)	Wet	0.011 ± 0.000 Ba	0.011 ± 0.000 Ba	0.010 ± 0.000 Ca	0.011 ± 0.000 Ba	0.012 ± 0.000 Aa	0.010 ± 0.000 Ca
SRP (mg l⁻¹)	Dry	0.011 ± 0.000 Ba	0.011 ± 0.000 Ba	0.011 ± 0.000 Ba	0.011 ± 0.000 Ba	0.012 ± 0.000 Aa	0.011 ± 0.000 Ba
TDP (mg l⁻¹)	Wet	0.087 ± 0.000 Fb	0.110 ± 0.000 Ca	0.108 ± 0.000 Ea	0.119 ± 0.000 Aa	0.114 ± 0.001 Ba	0.109 ± 0.001 Da
TDP (mg l⁻¹)	Dry	0.095 ± 0.000 Da	0.078 ± 0.000 Bb	0.099 ± 0.001 Eb	0.095 ± 0.001 Db	0.102 ± 0.002 Ab	0.097 ± 0.001 Cb

Water content, redox, OM, TOC and TN values of Mogan Lake’s sediment, by period and station

Parameter	Period	Station 1	Station 2	Station 3	Station 4	Station 5	Station 6
Water Content (%)	Wet	0.89 ± 0.01 Aa*	0.88 ± 0.02 ABa	0.86 ± 0.01 Ca	0.89 ± 0.01 Aa	0.90 ± 0.01 Aa	0.87 ± 0.01 BCa
Water Content (%)	Dry	0.77 ± 0.01 BCb	0.79 ± 0.01 Ab	0.71 ± 0.00 Eb	0.78 ± 0.01 Bb	0.81 ± 0.01 Ab	0.76 ± 0.01 CDb
Redox (mV)	Wet	−21.20 ± 0.11 Da	−34.75 ± 0.25 Ba	−38.92 ± 1.22 Ba	−45.10 ± 2.13 Aa	−23.60 ± 2.02 Db	−28.00 ± 1.15 Ca
Redox (mV)	Dry	−17.75 ± 0.50 Cb	−27.75 ± 0.01 BCb	31.25 ± 1.21 ABb	37.50 ± 2.69 Ab	−24.00 ± 2.03 BCa	−19.25 ± 1.89 Cb
OM (%)	Wet	0.05 ± 0.01 Ba	0.09 ± 0.00 Aa	0.04 ± 0.00 Bb	0.10 ± 0.02 Aa	0.10 ± 0.01 Aa	0.09 ± 0.02 Aa
OM (%)	Dry	0.04 ± 0.02 Ba	0.04 ± 0.01 Bb	0.09 ± 0.02 Aa	0.09 ± 0.02 Aa	0.07 ± 0.01 Ab	0.05 ± 0.02 Bb
TOC (%)	Wet	2.42 ± 0.03 Fa	3.91 ± 0.04 Eb	6.25 ± 0.05 Bb	5.80 ± 0.12 Ca	5.39 ± 0.01 Da	7.10 ± 0.11 Aa
TOC (%)	Dry	2.04 ± 0.15 Ea	7.25 ± 0.55 Aa	6.40 ± 0.12 Ba	5.83 ± 0.14 Ca	2.30 ± 0.00 Db	5.68 ± 0.27 Cb
TN (%)	Wet	0.25 ± 0.02 Fa	0.35 ± 0.01 Eb	0.47 ± 0.01 Db	0.50 ± 0.03 Ca	0.53 ± 0.01 Ba	0.57 ± 0.01 Aa
TN (%)	Dry	0.13 ± 0.01 Fb	0.59 ± 0.11 Aa	0.55 ± 0.02 Ba	0.49 ± 0.03 Ca	0.21 ± 0.00 Eb	0.40 ± 0.03 Db

NH3-N, NH4-N, NO3-N, SRP and TDP concentrations and pH values of Mogan Lake’s sediment pore water, by period and station

Parameter	Period	Station 1	Station 2	Station 3	Station 4	Station 5	Station 6
NH₃-N (mg l⁻¹)	Wet	0.422 ± 0.001 Eb*	0.892 ± 0.004 Aa	0.522 ± 0.003 Ca	0.413 ± 0.002 Fb	0.582 ± 0.001 Bb	0.452 ± 0.001 Db
NH₃-N (mg l⁻¹)	Dry	0.553 ± 0.001 Ea	0.580 ± 0.001 Db	0.524 ± 0.002 Fa	1.237 ± 0.002 Aa	0.835 ± 0.004 Ca	1.232 ± 0.005 Ba
NH₄-N (mg l⁻¹)	Wet	0.544 ± 0.001 Eb	1.149 ± 0.005 Aa	0.673 ± 0.003 Ca	0.533 ± 0.002 Fb	0.750 ± 0.002 Bb	0.582 ± 0.001 Db
NH₄-N (mg l⁻¹)	Dry	0.712 ± 0.001 Ea	0.747 ± 0.002 Db	0.675 ± 0.002 Fa	1.593 ± 0.003 Aa	1.076 ± 0.005 Ca	1.587 ± 0.006 Ba
NO₃-N (mg l⁻¹)	Wet	0.794 ± 0.005 Fa	0.913 ± 0.035 Ea	6.549 ± 0.000 Aa	3.199 ± 0.005 Ca	1.706 ± 0.000 Da	6.267 ± 0.008 Ba
NO₃-N (mg l⁻¹)	Dry	0.707 ± 0.005 Fb	0.809 ± 0.005 Ab	0.792 ± 0.004 Bb	0.752 ± 0.004 Db	0.733 ± 0.005 Eb	0.768 ± 0.005 Cb
SRP (mg l⁻¹)	Wet	0.012 ± 0.000 Bb	0.011 ± 0.000 Ca	0.013 ± 0.000 Aa	0.012 ± 0.000 Ba	0.011 ± 0.000 Ca	0.011 ± 0.000 Ca
SRP (mg l⁻¹)	Dry	0.021 ± 0.000 Aa	0.010 ± 0.000 Da	0.010 ± 0.000 Db	0.010 ± 0.000 Db	0.012 ± 0.000 Ca	0.012 ± 0.000 Ba
TDP (mg l⁻¹)	Wet	0.241 ± 0.000 Ab	0.202 ± 0.000 Ab	0.233 ± 0.002 Ab	0.166 ± 0.096 Ab	0.195 ± 0.000 Ab	0.200 ± 0.002 Ab
TDP (mg l⁻¹)	Dry	0.892 ± 0.002 Ba	0.849 ± 0.000 Ca	0.873 ± 0.052 Ba	0.992 ± 0.003 Aa	0.894 ± 0.000 Ba	0.916 ± 0.061 Aa
pH	Wet	8.85 ± 0.06 Da	9.40 ± 0.02 Ba	9.39 ± 0.02 Ba	9.22 ± 0.02 Ca	9.50 ± 0.02 Aa	9.40 ± 0.02 Ba
pH	Dry	8.84 ± 0.04 Da	8.86 ± 0.04 Cb	8.97 ± 0.04 Ab	8.80 ± 0.09 Eb	8.97 ± 0.04 Ab	8.91 ± 0.01 Bb

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Post-Dredging Nitrogen Dynamics at the Sediment–Water Interface: The Shallow, Eutrophic Mogan Lake, Turkey

Article Category: Original research paper

Publié en ligne: 20 mars 2023

Pages: 124 - 136

Reçu: 06 juil. 2022

Accepté: 21 nov. 2022

DOI: https://doi.org/10.26881/oahs-2023.1.10

© 2023 Akasya Topçu et al., published by Sciendo.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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NH3-N, NH4-N and NO3-N concentrations (filtered and non-filtered) of Mogan Lake’s sediment overlying water, by period and station

O2, pH, water temperature and redox values of Mogan Lake’s sediment overlying water, by period and station

TO, TP, SRP and TDP concentrations of Mogan Lake’s sediment overlying water, by period and station

Water content, redox, OM, TOC and TN values of Mogan Lake’s sediment, by period and station

NH3-N, NH4-N, NO3-N, SRP and TDP concentrations and pH values of Mogan Lake’s sediment pore water, by period and station