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Pakistan Journal of Biological Sciences
  Year: 2005 | Volume: 8 | Issue: 9 | Page No.: 1327-1336
DOI: 10.3923/pjbs.2005.1327.1336
 
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Seasonal Variations of the Zooplankton Composition and Abundance in the Istanbul Strait

Ahmet Nuri Tarkan , Melek I inibilir and Ali Serhan Tarkan

Abstract:
Composition and variation of zooplankton of the Istanbul Strait were studied to obtain information on the distribution, abundance and biomass of dominant zooplankton species in the both layers of Black Sea and Mediterranean Sea of Istanbul Strait and to determine the exchange of these species between those layers. Samples were collected vertically, using WP2 nets. In winter sampling period, the copepod Acartia clausi took part in the first place in abundance and meroplankton of bivalves occupied the second place. In the samples collected during spring period, diversity and abundance of different species were higher than other seasonal periods. Noctiluca scintillans with an abundance value of 2380 ind./m-3 was the dominant species, which was followed by A. clausi with 2156 ind./m-3 in the samples collected from the upper layer, while A. clausi showed the highest abundance with 924 ind./m-3, followed by the meroplankton of bivalves with 840 ind./m-3 in the samples collected from the lower layer. In summer period, A. clausi with 952 ind./m-3 and Penilia avirostris with 840 ind./m3 were collected intensively. In the Black Sea water average zooplankton abundance in winter period were 3485 ind./m-3 and during this time A. clausi was found to be the dominant species (976 ind./m-3). A second increase in the population of zooplankton was observed in the autumn period with a total abundance of 5969 ind./m-3. This study carried out seasonally through the year was important in determining dominant species of Istanbul Strait, towards understanding the ecology of the region.
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How to cite this article:

Ahmet Nuri Tarkan , Melek I inibilir and Ali Serhan Tarkan , 2005. Seasonal Variations of the Zooplankton Composition and Abundance in the Istanbul Strait. Pakistan Journal of Biological Sciences, 8: 1327-1336.

DOI: 10.3923/pjbs.2005.1327.1336

URL: https://scialert.net/abstract/?doi=pjbs.2005.1327.1336

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