<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>In this study, dissolved nutrients concentrations were measured monthly at downstream points of the two regional rivers (the Berdan and Göksu rivers) flowing into the Cilician Basin of the North-eastern (NE) Mediterranean Sea. The dissolved nutrients data obtained between September 2021 and August 2022 were used to determine riverine nutrient fluxes. This study showed that spatial and temporal variations were recorded in nutrients concentrations of the two regional rivers with the maximum values consistently recorded in the Berdan River having lower volume fluxes. The annual nutrient inputs of the two regional rivers indicated that higher amounts of dissolved nutrients were carried by the Göksu River due to its higher volume flux rate. The calculated molar ratios from total nitrogen (TN) and phosphorus (TP) fluxes ranged from 13 in the Göksu River to 22 in the Berdan River. The higher TN/TP molar ratio compared to the classic Redfield Ratio of N/P in the Berdan River is very likely to modify nutrient dynamics leading to further eutrophication in the shelf waters of the NE Mediterranean Sea.</p>
</abstract>

In this study, dissolved nutrients concentrations were measured monthly at downstream points of the two regional rivers (the Berdan and Göksu rivers) flowing into the Cilician Basin of the North-eastern (NE) Mediterranean Sea. The dissolved nutrients data obtained between September 2021 and August 2022 were used to determine riverine nutrient fluxes. This study showed that spatial and temporal variations were recorded in nutrients concentrations of the two regional rivers with the maximum values consistently recorded in the Berdan River having lower volume fluxes. The annual nutrient inputs of the two regional rivers indicated that higher amounts of dissolved nutrients were carried by the Göksu River due to its higher volume flux rate. The calculated molar ratios from total nitrogen (TN) and phosphorus (TP) fluxes ranged from 13 in the Göksu River to 22 in the Berdan River. The higher TN/TP molar ratio compared to the classic Redfield Ratio of N/P in the Berdan River is very likely to modify nutrient dynamics leading to further eutrophication in the shelf waters of the NE Mediterranean Sea.

Nutrient inputs from two major rivers into the cilician basin of the north-eastern Mediterranean Sea

Oceanological and Hydrobiological Studies

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

In this study, dissolved nutrients concentrations were measured monthly at downstream points of the two regional rivers (the Berdan and Göksu rivers) flowing...

Station	NO₃-N (ton y^-1)	PO₄-P (ton y^-1)	TN (ton y^-1)	TP (ton y^-1)	TN/TP (molar)
Berdan R.	294	69	768	78	22
GöksuR.	1079	224	2158	373	13

Station	Date	NO₃-N (μM)	PO₄-P (μM)	TN (μM)	TP (μM)
Berdan R.Discharge: 6 m³ s^-1	Sep 21	127.5	8.42	377.14	8.71
	Oct 21	98.4	54.71	485.71	55.03
	Nov 21	85.5	11.57	642.86	16.13
	Dec 21	90.4	4.21	228.57	9.03
	Jan 22	104.9	19.99	535.71	21.94
	Feb 22	172.6	3.16	207.14	5.48
	Mar 22	167.8	5.26	271.43	6.45
	Apr 22	96.8	5.26	114.29	5.58
	May 22	35.5	3.16	64.29	3.48
	Jun 22	85.5	3.16	157.14	3.48
	Jul 22	137.2	12.62	157.14	12.90
	Aug 22	130.7	10.52	235.71	10.84
Göksu R.Discharge: 45 m³ s^-1	Sep 21	17.7	4.21	140.71	24.52
	Oct 21	37.1	2.10	107.14	2.90
	Nov 21	61.3	2.10	100.00	7.10
	Dec 21	67.8	4.21	135.71	4.84
	Jan 22	53.2	6.31	78.57	6.77
	Feb 22	83.9	17.89	84.29	18.06
	Mar 22	56.5	3.16	107.14	3.55
	Apr 22	53.2	4.21	121.43	4.52
	May-22	37.1	4.21	114.29	10.65
	Jun 22	59.7	4.21	135.71	9.68
	Jul 22	62.9	4.21	85.71	4.52
	Aug 22	61.3	4.21	92.86	4.52

Nutrient inputs from two major rivers into the cilician basin of the north-eastern Mediterranean Sea

Article Category: Original research paper

Online veröffentlicht: 28. Juni 2023

Seitenbereich: 240 - 244

Eingereicht: 06. Jan. 2023

Akzeptiert: 25. Apr. 2023

DOI: https://doi.org/10.26881/oahs-2023.2.08

© 2023 Mehmet Türkeri et al., published by Sciendo

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

Figure 1

Figure 2

Mean annual nutrients fluxes of the two regional rivers flowing into the Cilician Basin of the Northeastern Mediterranean Sea

Concentrations of dissolved nutrients in the two regional rivers between September 2021 and August 2022