Short Time Variations of Winter Phytoplankton, Nutrient and Chlorophyll  a of Kepez Harbor in the Dardanelles (Çanakkale Strait, Turkey)

Muhammet Turkoglu; Cenk Oner

Makale detayları

Short Time Variations of Winter Phytoplankton, Nutrient and Chlorophyll a of Kepez Harbor in the Dardanelles (Çanakkale Strait, Turkey)

Yazarlar:

Muhammet Turkoglu | Cenk Oner

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2010 Vol.10 Issue 4

Belge Tipi:

Makale

Yayın Tarihi:

7/2010

Belge Dili:

Türkçe

Document ID (Org No.):

2000838436

Sıklık:

Üç Aylık

pISSN:

1303-2712

Anahtar kelimeler:

Özet:

 

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 of 02  December 2004 and 07 March 2005. Average temperature, salinity, pH, specific conductivity, TDS, DO, TSS, NO-  2+NO-  3,  PO-34, SiO4 and chlorophyll a were measured 9.47°C, 27.5 ppt, 8.12, 42.86 mS cm-1, 27.86 g L-1, 9.23 mg L-1, 27.1 mg L-1,  0.43 ìM, 0.23 ìM, 2.91 ìM, 1.919 ìg 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, there also 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. 	 	 		 .

 

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 of 02  December 2004 and 07 March 2005. Average temperature, salinity, pH, specific conductivity, TDS, DO, TSS, NO-  2+NO-  3,  PO-34, SiO4 and chlorophyll a were measured 9.47°C, 27.5 ppt, 8.12, 42.86 mS cm-1, 27.86 g L-1, 9.23 mg L-1, 27.1 mg L-1,  0.43 ìM, 0.23 ìM, 2.91 ìM, 1.919 ìg 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, there also 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. 	 	 		 .

Makale detayları

Short Time Variations of Winter Phytoplankton, Nutrient and Chlorophyll a of Kepez Harbor in the Dardanelles (Çanakkale Strait, Turkey)

Yazarlar:

Muhammet Turkoglu | Cenk Oner

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2010 Vol.10 Issue 4

Belge Tipi:

Makale

Yayın Tarihi:

7/2010

Belge Dili:

Türkçe

Document ID (Org No.):

2000838436

Sıklık:

Üç Aylık

pISSN:

1303-2712

Dardanelles

phytoplankton

short time variations

winter

environmental parameters

eutrophication

Sayı

Makale detayları

Short Time Variations of Winter Phytoplankton, Nutrient and Chlorophyll a of Kepez Harbor in the Dardanelles (Çanakkale Strait, Turkey)

Yazarlar: Muhammet Turkoglu | Cenk Oner

Yayıncı: Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi: Turkish Journal of Fisheries and Aquatic Sciences 2010 Vol.10 Issue 4

Belge Tipi: Makale

Yayın Tarihi: 7/2010

Belge Dili: Türkçe

Document ID (Org No.): 2000838436

Sıklık: Üç Aylık

pISSN: 1303-2712

Dardanelles

phytoplankton

short time variations

winter

environmental parameters

eutrophication

Sayı

Yazarlar:

Muhammet Turkoglu | Cenk Oner

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2010 Vol.10 Issue 4

Belge Tipi:

Makale

Yayın Tarihi:

7/2010

Belge Dili:

Türkçe

Document ID (Org No.):

2000838436

Sıklık:

Üç Aylık

pISSN:

1303-2712