Nihayet BİZSEL

The phosphorus budget in the sea of Marmara

Marmara Denizi fosfor bütçesi. Dikey karışımı kontrol eden güçlü tabakalaşma gözönüne alınarak, Ocak-1986-Kasım 1986 çalışma periyodu süresince elde edilen verilerin yıllık ortalamaları, kullanılarak, boğazlar sisteminin bütçesi oluşturulmuştur. Boğazlar sistemindeki akan su kütlelerinin hacmi 1986 yılı tuzluluk değerleri gözönüne alınarak hesaplanmıştır. Ortalama fosfor değerleri üst (haloklin üstü) ve alt tabaka (haloklin altı) ayrı ayrı gözönüne alınarak yapılmıştır. Karşılaştırma yapmak amacıyla, dört yıllık avaraj tuzluluk değeri kullanılarak hesaplanmış yeni su kütlelerinin hacimleriyle eski bütçe yeniden gözden geçirilmiş ve sonuçda, en sık örneklemenin yapıldığı Karadeniz-Boğaz kesiminde çok büyük değişiklikler gözlenmezken, göreceli olarak 1986 yılına kadar daha seyrek çalışılmış, Çanakkale-Ege kesiminde farklı sonuçlar alınmıştır. Bu çalışmada, her iki fosfor bütçesinde, ana kaynağı Karadeniz yüzey akıntısı (birinci bütçede % 60, ikinci bütçede % 64) olan, yaklaşık 2.0x$10^4$ ton $yıl^{-1}$ toplam fosforun Marmara yüzey suyuna taşındığı hesaplanmıştır.

Anahtar Kelimeler:

Karadeniz, denizler, fosfor, İstanbul Boğazı, yüzey suyu, kirlilik

Marmara Denizi fosfor bütçesi

The phosphorus budget of the Sea of Marmara was calculated by using the annual averages of data collected during January 1986-November 1986. Volume fluxes across the compartments of the Turkish Straits System were calculated by using average salinity data. The average values of phosphate were taken for both epihalocline, i.e., the upper layer, and subhalocline layers, i.e., the lower layer, on the basis of the strong permanent stratification that controls the vertical mixing processes.The budget was revised by using the new water fluxes which were estimated by the average salinity data covering 4 consecutive years (1986-1989), in order to be able to compare the results with those of the most recent study. Comparison of these two budgets shows that there is no any big difference of the amounts of the inputs to the Sea of Marmara via Bosphorus in- and outflux. However, the fluxes through the Dardanelles strait have displayed differences because relatively insufficient frequency of study was done in the Dardanelles-Marmara Junction (DMJ) and Dardanelle-Aegean Junction (DAJ) until 1986.Total exported amount into the Sea of Marmara has been calculated as about 2.0x$10^4$ tons $yr^{-1}$for the first and the second budget. The major source is the Black Sea surface water (60 % for the first, 64 % for the second budget).

Keywords:

Black Sea, marine areas, phosphorus, Bosphorus, surface water, pollution,

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Baştürk, O., Saydam, A.C., OcianographY of the' Tarkish:Strai ts, v.,3; ,Health ,the Turkish, Straits, II„Chemical and environmental aspects of th,e,,Sea, of Marmara. First Annual Report, IMS-METU, 69 pages, l„ ,

Baştürk, O.,, -Sayclarn,. Salihoglu,.I.,.1988. Oceanography of, the,Turldsh Straits, y. 2, Health of the Turkish Straits, chemical and environmental aspects of the Sea of Marniara ancithe-Golden H9rn:RepOrt; IlvIS-METU,STPageS:' ##.

Beşiktepe, , S., 1991. Some aapects ,of the circulation dynamics of the Sea Of Marniara. Ph.D. 226-pag6i2'. ' " • •' (,

Besiktepe, S., Sur, Ozsoy, E., Latif, M.A.; oguz;.T., thiltiaia; O., I994,',Tbe cifcblation and hydrography of the Marmara Sea. Progress in Oceanography, 34, 285-334.

Bizsel, N., 1988. Dynamics of phosphate and nitrate in the Sea of Marmara. M.Sc.Thesis, AnStittite Of Marine Sciences, Middle East Technical University, Erdemli, Ice', Turkey, .,.226 pages. .W,; • -

Bizsel, N., 1995. Marmara Denizi ye Bogazlarda Besin tuzu Ege Oniversitesi, Su Dergisi, Cult: 12, Sayi: 3-4, 219-230.

Büyükay, M., 1989. The surface and internal ascillations in the Bosphorus related to meteorological forces. MSc Thesis, Institute of Marine Sciences, Middle East Technical University, Erdemli, Icel., Turkey 169 pages.

Ediger, D., 1988. Fluctuations of chlorophyll-a and primary productivity as related to physical, chemical and biological parameters in turkish coastal waters. Master Thesis, Institute of Marine Sciences, METU, Erdemli, feel, Turkey.

Fonselius, Stig, H., 1969. Hydrography of the Baltic deep basins. III. Fishery Board of Sweden. Series Hydrography, Reports No: 23.

Latif, M.A., Oguz, T., Sur, H.I., Besiktepe, S., Ozsoy, E., OnItiata, O., 1990. Oceanography of the Turkish Straits-Third Annual Report, Vol. 1. Physical Oceanography of the Turkish Straits.Report. Institute of Marine Sciences, Middle East Technical University, Erdemli, leel, Turkey, 201 pages.

Mee, L.D., 1992. The Black Sea in crisis: The need for concerted international action. Ambio, 24, 278-286.

Moore, WW.S., O'Neil, D.J., 1991. Radionuclide distributions in recent sea sediments. In: The Black Sea Oceanography, E. Izdar and J.M. Murray, editors, NATO/ASI Series, Dordrecht, Kluwer Academic Publishers, 257-270.

Ozsoy, E., Oguz, T., Latif, M.A., Onlilata, O., 1986. Physical Oceanography of the Turkish Straits. First AnnUal Report, v. 1, IMS-METU, 138 pages.

Ozsoy, E., Oguz, T., Latif, M.A., Onliiata, O., Sur, H.I., Besiktepe, S., 1988. Physical Oceanography of the Turkish Straits. Second Annual Report, v. 1, IMS-METU, 269 pages.

Polat, C., Tukrul, S., 1995. Nutrient and organic carbon exchanges between the Black and Marmara Seas through the Bosphorus Strait. Continental Shelf Research, Vol. 15, no. 9, p. 1115-1132.

Redfield, A.C., Ketchum, B.H., Richards, F.A., 1963. The influence of organisms on composition of sea water, v. 2, p. 26-77. In: The Sea (Ed.: Hill, M.N.), Interscience, New York

Sen Gupta, R., 1973. A study of nitrogen and phosphorus and their interrelationships in the Baltic.Ph.D thesis, Dept. of Oceanogr, Univ. of Gothenburg, 79 p.

Smetacek, V., Bathmann, U., Nothig, E., Scharek, R., 1991. Coastal Eutrophication: Causes and Consequences. In: Ocean Margin Processes in Global Change, (Eds.: Mantoura R.F.C., J.M. Martin and R. Wollast), pp. 251-279.

Sorokin, Y.U.I., 1983. The Black Sea. In: Ecosystems of the world. Estuaries and Enclosed Seas. (Ed.: Ketchum, B.H.), v. 26, Elsevier, Amsterdam, 253-291.

Strickland, I.D.H., Parsons, T.R., 1972. A practical Handbook of Sea Water Analysis.Fish.Res.Board of Canada, 167 pages.

Sturnm, W., Morgan, J., 1970. Aquatic Chemistry, Wiley-INterscience, New York, 780 pp.

Ünlüata, O., Ozsoy, E., 1986. Oceanography of the Turkish Straits I.: Oxygen deficiency of the Sea of Marmara. First Annual Report, v. 2, IMS-METU, 81 pages.

Ünlüata, U., Oguz, T., Latif, M.A., Ozsoy, E., 1990. On the physical oceanography of the Turkish Straits. In: The Physical Oceanography of Sea Straits, (Ed.: Pratt L.J.), NATO/ASI series, Kluwer, 25-60