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

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Title Statement <p>Spatial and temporal variation in the distribution and abundance of <em>Synechococcus</em> spp., picoeukaryotes, nanoeukaryotes and Chlorophyll-<em>a </em>in the Eastern Black Sea</p>
 
Added Entry - Uncontrolled Name Dokuzparmak, U ; Department of Fisheries Technology Engineering, Faculty of Marine Sciences, Karadeniz Technical University, Trabzon, 61530, Turkey
Feyzioglu, A M ; Department of Fisheries Technology Engineering, Faculty of Marine Sciences, Karadeniz Technical University, Trabzon, 61530, Turkey
 
Uncontrolled Index Term Abundance, Chlorophyll-a, Distribution, Flow cytometry, Phytoplankton
 
Summary, etc. <p style="text-align: justify;">The abundance and distribution of <em>Synechococcus</em> spp., picoeukaryotes, nanoeukaryotes, and chlorophyll-<em>a</em>, 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, <em>Synechococcus</em> spp. were numerically dominant with an annual average of 3.40×10<sup>4</sup> cells mL<sup>-1</sup>, ranging between 0.51 and 9.93×10<sup>4</sup> cells mL<sup>-1</sup>, followed by picoeukaryotes with an annual average of 0.79×10<sup>3</sup> cells mL<sup>-1</sup>, ranging from 0.05 to 3.93×10<sup>3 </sup>cells mL<sup>-1</sup>. The nanoeukaryotes were the least abundant group in the region, with an annual average of 3.26×10<sup>2</sup> cells mL<sup>-1</sup> ranging between 0.12 and 17.98×10<sup>2</sup> cells mL<sup>-1</sup>. The minimum and maximum values of <em>Synechococcus</em> spp. and picoeukaryotes were found at stations from Fatsaand Arhavi, while nanoeukaryotes had their minimum-maximum abundance at stations from Yomraand Ordu. Overall, the <em>Synechococcus</em> 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 <em>Synechococcus</em> spp. was significantly negatively correlated with depth during winter, while picoeukaryotes tended to notably correlate with depth during autumn and winter (<em>p</em> &lt; 0.05). Contrary, the abundance of nanoeukaryotes was considerably negatively correlated with depth in all seasons. The chlorophyll-<em>a </em>showed a striking negative correlation with depth during spring and autumn. There were particularly positive correlations among <em>Synechococcus</em> spp., picoeukaryotes, nanoeukaryotes and chlorophyll-<em>a</em>,<em> </em>implying their coexistence. However, the picoeukaryotes were significantly negatively-correlated with nanoeukaryotes.</p>
 
Publication, Distribution, Etc. Indian Journal of Geo-Marine Sciences (IJMS)
2022-09-01 01:02:26
 
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http://op.niscair.res.in/index.php/IJMS/article/view/43076
 
Data Source Entry Indian Journal of Geo-Marine Sciences (IJMS); ##issue.vol## 51, ##issue.no## 03 (2022)
 
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