| Autor: |
Rahnama Haratbarr, Reza, Azizpour, Jafar, Manbohi, Ahmad, Darvish Bastami, Kazem, Hamzehpour, Ali, Mehdinia, Ali, Taheri, Mehrshad |
| Zdroj: |
Ocean Science Journal; Jun2024, Vol. 59 Issue 2, p1-12, 12p |
| Abstrakt: |
We investigated the abundance and distribution of the invasive ctenophore, Mnemiopsis leidyi, at five transects in the southern part of the Caspian Sea for four seasons from December 2019 to August 2020. M. leidyi was found in all transects and seasons. The maximum temperature was around 27.5 °C in summer. The highest abundance and biomass of M. leidyi were found in the T5S1 (Larim transect) and T2S1 (Kiashahr transect) stations in summer (120 ± 22 ind m−3 and 279 ± 46 mg m−3) and the lowest in T1S3 and T1S2 stations (Lisar transect) in winter (3 ± 1 ind m−3 and 0.04 ± 0.01 mg m−3), respectively. Furthermore, the maximum average of abundance and biomass of M. leidyi were observed in Larim and Kiashahr transects (106 ± 15 ind m−3 and 242 ± 33 mg m−3) and the minimum in Lisar transect (4 ± 0.6 ind m−3 and 0.05 ± 0.01 mg m−3) respectively. Also, the body lengths that ranged between 0 and 5 mm were the most frequently observed. The highest total abundance and biomass of the M. leidyi were observed in summer (1033 ind m−3 and 2923 mg m−3) and the lowest in winter (122 ind m−3 and 22.09 mg m−3), respectively. The results of the DistLM showed that the distribution and abundance of M. leidyi in the south of the Caspian Sea are highly related to NO3− and PO43− and to a lesser extent to temperature and Sio2. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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