Mersin Körfezi’nde piko (heterotrofik bakteri ve synechococcus) ile nanoplanktonik (kamçılılar) organizmaların bolluk ve biyokütlesinin zamana bağlı ve bölgesel değişimleri - ortamın fiziksel, kimyasal ve biyolojik parametreleri ile ilişkileri.

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Tezin Türü: Yüksek Lisans

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Türkiye

Tezin Onay Tarihi: 2011

Tezin Dili: İngilizce

Öğrenci: Ayşe Gazihan Akoğlu

Danışman: ZAHİT UYSAL

Özet:

The eastern Mediterranean has been known as the most oligotrophic water body among the worlds oceans and as a result of limited nutrient inputs from terrestrial sources primary productivity and plankton succession are restricted by lack of nutrients especially by phosphorus and nitrogen. Within this domain, Mersin bay forms a so called hot spot (highly sensitive) area where a sharp contrast exists between the coastal area supplied by land-based nutrient sources and the nutrient limited open sea. Excess nutrient enrichment lead for eutrophication in the inner Mersin bay while altering the quality and quantity of flora from shore to offshore. Microorganisms are highly sensitive and profoundly affected by environmental disturbances and are widely used to assess the impact of environmental changes on ecosystem functioning. With this study, it is aimed to investigate responses of the smaller fractions of phytoplankton composed of heterotrophic bacteria, Synechococcus and flagellates to rapidly changing ambient biological, chemical and physical properties of shelf waters over an extended period between 2008 and 2010. Epiflourescence microscopy and image analysis setup were used to enumerate and measure size of cells for biomass estimates.