Ichthyoplankton in the Strait of Istanbul (Bosphorus) and Northern Sea of Marmara: Summer Snapshot of Spatial Distribution and Satellite Modeled Hydrographic Drivers

Orçin Uygun

doi:10.26650/ijegeo.1893703

Ichthyoplankton in the Strait of Istanbul (Bosphorus) and Northern Sea of Marmara: Summer Snapshot of Spatial Distribution and Satellite Modeled Hydrographic Drivers

Abstract

The Strait of Istanbul (Bosphorus, SoI) system, which serves as a biological corridor between the Black Sea and the Sea of Marmara, plays a critical role in the transport of fish during their early life stages. This study examined the structure, distribution, and relationship with environmental factors of the surface ichthyoplankton assemblage in the transition zone between the Strait of Istanbul and the Northern Marmara Sea, beginning at the Black Sea entrance. The research was conducted at 13 stations determined between 22 and 29 July 2023, representing the summer period. Sampling was performed using a WP2 plankton net, while hydrographic data (temperature, salinity and current velocity) were obtained in high resolution from the Copernicus Marine Service (CMEMS) satellite database. A total of 21 taxa were identified in the assemblage, with Engraulis encrasicolus (European anchovy) and Trachurus mediterraneus (Mediterranean horse mackerel) identified as the dominant species in the upper layer. The results of the Distance-Based Linear Model (DistLM) and dbRDA analyses indicate that temperature and salinity gradients are the main explanatory variables for variation in species composition. Additionally, the observed spatial patterns and the model's sensitivity to current velocity suggest that the Strait of Istanbul surface current system could potentially act as a supportive mechanism for the localized transport of E. encrasicolus early life stages. In turn, this transport process is thought to have potential implications for the local recruitment dynamics of the species in the Sea of Marmara.

Keywords

References

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Details

Primary Language

English

Subjects

Ocean Engineering, Maritime Engineering (Other), Water Resources and Water Structures

Journal Section

Research Article

Authors

Orçin Uygun ^*
0000-0001-7778-5211
Türkiye

Publication Date

June 19, 2026

Submission Date

February 20, 2026

Acceptance Date

May 13, 2026

Published in Issue

Year 2026 Volume: 13 Number: 2

DOI

https://doi.org/10.26650/ijegeo.1893703

IZ

https://izlik.org/JA85YY52GL

Cite

RIS / Bibtex

APA

Uygun, O. (2026). Ichthyoplankton in the Strait of Istanbul (Bosphorus) and Northern Sea of Marmara: Summer Snapshot of Spatial Distribution and Satellite Modeled Hydrographic Drivers. International Journal of Environment and Geoinformatics, 13(2), 151-161. https://doi.org/10.26650/ijegeo.1893703

AMA

1.Uygun O. Ichthyoplankton in the Strait of Istanbul (Bosphorus) and Northern Sea of Marmara: Summer Snapshot of Spatial Distribution and Satellite Modeled Hydrographic Drivers. IJEGEO. 2026;13(2):151-161. doi:10.26650/ijegeo.1893703

Chicago

Uygun, Orçin. 2026. “Ichthyoplankton in the Strait of Istanbul (Bosphorus) and Northern Sea of Marmara: Summer Snapshot of Spatial Distribution and Satellite Modeled Hydrographic Drivers”. International Journal of Environment and Geoinformatics 13 (2): 151-61. https://doi.org/10.26650/ijegeo.1893703.

EndNote

Uygun O (June 1, 2026) Ichthyoplankton in the Strait of Istanbul (Bosphorus) and Northern Sea of Marmara: Summer Snapshot of Spatial Distribution and Satellite Modeled Hydrographic Drivers. International Journal of Environment and Geoinformatics 13 2 151–161.

IEEE

[1]O. Uygun, “Ichthyoplankton in the Strait of Istanbul (Bosphorus) and Northern Sea of Marmara: Summer Snapshot of Spatial Distribution and Satellite Modeled Hydrographic Drivers”, IJEGEO, vol. 13, no. 2, pp. 151–161, June 2026, doi: 10.26650/ijegeo.1893703.

ISNAD

Uygun, Orçin. “Ichthyoplankton in the Strait of Istanbul (Bosphorus) and Northern Sea of Marmara: Summer Snapshot of Spatial Distribution and Satellite Modeled Hydrographic Drivers”. International Journal of Environment and Geoinformatics 13/2 (June 1, 2026): 151-161. https://doi.org/10.26650/ijegeo.1893703.

JAMA

1.Uygun O. Ichthyoplankton in the Strait of Istanbul (Bosphorus) and Northern Sea of Marmara: Summer Snapshot of Spatial Distribution and Satellite Modeled Hydrographic Drivers. IJEGEO. 2026;13:151–161.

MLA

Uygun, Orçin. “Ichthyoplankton in the Strait of Istanbul (Bosphorus) and Northern Sea of Marmara: Summer Snapshot of Spatial Distribution and Satellite Modeled Hydrographic Drivers”. International Journal of Environment and Geoinformatics, vol. 13, no. 2, June 2026, pp. 151-6, doi:10.26650/ijegeo.1893703.

Vancouver

1.Orçin Uygun. Ichthyoplankton in the Strait of Istanbul (Bosphorus) and Northern Sea of Marmara: Summer Snapshot of Spatial Distribution and Satellite Modeled Hydrographic Drivers. IJEGEO. 2026 Jun. 1;13(2):151-6. doi:10.26650/ijegeo.1893703