This study was carried out to determine the short time series of phytoplankton density and chlorophyll a in relation to nutrients and other environmental parameters in surface waters of Kepez Harbor in the Dardanelles in winter period , 27.1 mg L -1 , 0.43 μM, 0.23 μM, 2.91 μM, 1.919 μg L -1 , respectively. Both N:P (1.78) and Si:P ratios (14.9) were significantly lower than the assimilatory optimal Redfield ratio. Total phytoplankton density varied between 8.25E+04 and 4.71E+06 Cell L -1 . Phytoplankton community structure was observed to be controlled by 3 dinoflagellates and 4 diatoms in the Dardanelles. However, also there were blooms of coccolithophoride Emiliania huxleyi in early December (2.36E+06 Cells L -1 ) and late February (1.57E+06 Cells L -1 ) and some silicoflagellates such as Dictyocha spp. in early February (2.36E+05 Cells L -1 ). Contribution of diatoms to total phytoplankton density (48.8%) was higher than the contribution of dinoflagellates (30.9%) and other taxonomic groups (20.3%). Relationships between chlorophyll a and diatoms (r=0.726), between chlorophyll a and dinoflagellates (r=0.579) and between chlorophyll a and other taxonomic groups (r=0.514) showed that chlorophyll a was highly controlled by diatoms than dinoflagellates and other taxonomic groups. On the other hand, short time distribution of phytoplankton revealed that there was growing 7 phytoplankton populations in the winter period. High chlorophyll a, nutrient, phytoplankton density and rational differences between major taxonomic groups revealed that the Dardanelles was connected with the process of eutrophication due to high terrestrial discharges coming from Black Sea surface waters via straits system and international carrying activities by vessels. ) kokkolitoforid Emiliania huxleyi türünün ve Şubat ayı başında ise Dictyocha spp. gibi bazı silikoflagellat türlerinin önemli üremeleri (2,36E+05 Cells L -1 ) görüldü. Diatomların toplam fitoplankton yoğunluğuna olan katkısı (%48,8) dinoflagellatların (%30,9) ve diğer taksonomik grupların katkısından (%20,3) çok daha yüksekdi. Klorofil a ve diatomlar (r=0,726), klorofil a ve dinoflagellatlar (r=0,579), klorofil a ve diğer taksonomik gruplar (r=0,514) arasındaki korelasyon ilişkileri, klorofil a'nın dinoflagellatlar ve diğer taksonomik gruplardan daha ziyade diyatomlar tarafından kontrol edildiğini göstermiştir. Diğer taraftan, fitoplanktonun kısa zaman serili değişimleri, kış döneminde 7 farklı fitoplankton populasyon eğrisinin geliştiğini göstermiştir. Türk Boğazlar Sistemi yoluyla Karadeniz'den gelen yüksek karasal girdiler ve uluslar arası gemi taşımacılık aktiviteleri nedeniyle, yüksek klorofil a, yüksek besin tuzu konsantrasyonu, yüksek fitoplankton yoğunluğu ve büyük taksonomik gruplar arasındaki değişen oransal farklılıklar Çanakkale Boğazı'nın ötrofik bir yapıya sahip olduğunu göstermiştir.Anahtar Kelimeler: Çanakkale Boğazı, fitoplankton, kısa zaman serisi, kış dönemi, çevresel parametreler, ötrofikasyon. 538M. Turkoglu and C. Oner / Turk. J. Fish. Aquat. Sc...
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