Spatio-temporal pattern of phytoplankton and pigment composition in surface waters of south-eastern Black Sea

• Autorzy: Agirbas E. , Koca L. , Aytan U.

Identyfikatory

DOI

10.1016/j.oceano.2017.03.004

• Języki publikacji: EN

Abstrakty

EN

Phytoplankton community, diatom to dinoflagellate ratio and pigment composition in surface waters with nutrient data from April 2013 to March 2014 were monitored in the south-eastern (SE) Black Sea using high performance liquid chromatography (HPLC) and microscopic analyses. Microscopic examination revealed a total of 71 species that consist of dinoflagellate (58%), diatoms (25%) and other groups (17%). Microscopy and HPLC-based pigment analyses revealed almost similar results which suggest that the phytoplankton community is mainly composed of diatoms, dinoflagellates and coccolithophores. Fucoxanthin (mean 0.35 ± 019 μg L⁻¹), peridinin (mean 0.18 ± 0.14 μg L⁻¹) and 19-hexanoyloxyfucoxanthin (mean 0.24 ± 0.15 μg L⁻¹) are prominent pigments which showed significant correlation with Diatom-C (r² = 0.63–0.71, p < 0.05), Dinoflagellate-C (r² = 0.49–0.80, p < 0.05) and Coccolithophore-C (r² = 0.72–0.82, p < 0.05), respectively. Mean carbon biomass of diatoms (36.50 ± 9.72 μg L⁻¹) was higher than that of dinoflagellates (33.32 ± 9.05 μg L⁻¹). Significant differences were also observed in nutrient ratio (N:P and Si:N) (One-way ANOVA, p < 0.05). Results illustrate that HPLC-based pigment approach can be used for taxonomic characterisation of phytoplankton groups in the SE Black Sea. Moreover, relatively high dinoflagellate species dominancy and significant correlations between Phyto-C and marker pigments indicate that phytoplankton community composition is shifting towards much smaller groups in SE coasts of the Black Sea.

Słowa kluczowe

EN

chlorophyll-a; pigment; phytoplankton; HPLC; high performance liquid chromatography; Black Sea

• Wydawca: Polish Academy of Sciences, Institute of Oceanology ; Elsevier
• Czasopismo: Oceanologia
• Rocznik: 2017
• Tom: No. 59 (3)
• Strony: 283--299
• Opis fizyczny: Bibliogr. 90 poz., wykr.

Twórcy

autor

Agirbas E.

• Recep Tayyip Erdogan University, Faculty of Fisheries, Rize, Turkey

autor

Koca L.

• Recep Tayyip Erdogan University, Faculty of Fisheries, Rize, Turkey

autor

Aytan U.

• Recep Tayyip Erdogan University, Faculty of Fisheries, Rize, Turkey

Bibliografia

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Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).