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Spatial and temporal variation in the distribution and abundance of Synechococcus spp., picoeukaryotes, nanoeukaryotes and Chlorophyll-a in the Eastern Black Sea

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Title Spatial and temporal variation in the distribution and abundance of Synechococcus spp., picoeukaryotes, nanoeukaryotes and Chlorophyll-a in the Eastern Black Sea
 
Creator Dokuzparmak, U
Feyzioglu, A M
 
Subject Abundance
Chlorophyll-a
Distribution
Flow cytometry
Phytoplankton
 
Description 238-248
The abundance and distribution of Synechococcus spp., picoeukaryotes, nanoeukaryotes, and chlorophyll-a, were studied
through the water column (from 0 – 100 m depth) during four different seasons along the Eastern Black Sea coast. Based on
annual average values, Synechococcus spp. were numerically dominant with an annual average of 3.40×104 cells mL-1,
ranging between 0.51 and 9.93×104 cells mL-1, followed by picoeukaryotes with an annual average of 0.79×103 cells mL-1,
ranging from 0.05 to 3.93×103 cells mL-1. The nanoeukaryotes were the least abundant group in the region, with an annual
average of 3.26×102 cells mL-1 ranging between 0.12 and 17.98×102 cells mL-1. The minimum and maximum values of
Synechococcus spp. and picoeukaryotes were found at stations from Fatsaand Arhavi, while nanoeukaryotes had their
minimum-maximum abundance at stations from Yomraand Ordu. Overall, the Synechococcus spp. seasonal cycle exhibited
a bimodal distribution, with one peak in summer and the other in autumn. In contrast, picoeukaryote and nanoeukaryote
seasonal cycles had unimodal distributions, with peaks during winter. The abundance of Synechococcus spp. was
significantly negatively correlated with depth during winter, while picoeukaryotes tended to notably correlate with depth
during autumn and winter (p < 0.05). Contrary, the abundance of nanoeukaryotes was considerably negatively correlated
with depth in all seasons. The chlorophyll-a showed a striking negative correlation with depth during spring and autumn.
There were particularly positive correlations among Synechococcus spp., picoeukaryotes, nanoeukaryotes and chlorophyll-a,
implying their coexistence. However, the picoeukaryotes were significantly negatively-correlated with nanoeukaryotes.
 
Date 2022-07-12T07:34:18Z
2022-07-12T07:34:18Z
2022-03
 
Type Article
 
Identifier 2582-6727 (Online); 2582-6506 (Print)
http://nopr.niscpr.res.in/handle/123456789/60101
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJMS Vol.51(03) [March 2022]