Ömer Osman Ertan

Türkiye Denizlerinde Avlanan Barbun Balıklarının Besinsel İçerik Yönünden Karşılaştırılması

Bu calismada, ulkemiz denizlerinde avciligi yapilan barbun balikarinin besinsel icerigi ile ilgili calismalar incelenmis ve elde edilen besin degerlerinin karsilastirmalari yapilmistir.

Clasical methods on the seafood freshness and quality determination.

Quality products must be made by complying with the quality products and the highest level of quality resources for health conditions. Seafood is located in perishable food group. Seafood is also used in production of manufactured goods of the food industry as a raw material. For the protection of consumer health, the control of the quality and freshness of raw materials must be provided with appropriate methods before the production process steps. This control process is important to international trade, also. In this study, the physical, chemical, microbiological and sensory methods, being used in fressness and quality control of seafood from the past to present have been investigated.

Manavgat Nehri Nehirağzı Bölgesi Zooplanktonunun Sistematik ve Ekolojik Yönden İncelenmesi

Ocak-Aralik 2009 tarihleri arasinda Manavgat Nehri’nden secilen 5 istasyondan aylik orneklemeler yapilmis, bazi fizikokimyasal degiskenler ile zooplankton tur bilesimi ve yogunlugu arastirilmistir. Manavgat Nehri nehiragzi bolgesinde Copepoda yogunlugu en yuksek agustos (22883±8156 org/m3 ), en dusuk mart (2160±726 org/m3 ) ; Rotifera yogunlugu en yuksek subat (1820±641 org/m3 ), en dusuk eylul (644±298 org/m3 ); Cladocera yogunlugu en yuksek agustos (2279±386 org/m3 ), en dusuk ocak (204±71 org/m3 ); diger organizmalarin yogunlugu en yuksek subat (2105±530 org/m3 ), en dusuk nisan (549,49±202 org/m3 ) aylarinda belirlenmistir. Manavgat Nehri nehiragzi bolgesinde baskin olarak gorulen turler Oithona nana, Clausocalanus arcuicornis, Acartia discaudata, Paracalanus parvus, Bosmina longirostris ve Keretella cochleris olarak saptanmistir ve bu turler orihalin karakterindeki zooplankton turleridir.

The determination of trophic status in Kovada channel that connects Lake Eğirdir and Lake Kovada and in the region of the lakes adjacent to the channel.

In this study, which was carried out between July 2010- June 2011, totally 9 stations were chosen from research area; three of them were from Lake Egirdir (around the area where the channel is connected to the lake); three stations were from Kovada Channel and the last three stations were from Lake Kovada (around the area where the channel is poured into the lake). Water samples (for the analysis of chlorophyll a and total phosphorus) were taken monthly and also secchi disc depth was measured from these stations. Carlsons Trophic State Index was used for the determination of the trophic status of the study area. According to obtained data, the studied area of Lake Egirdir has oligotrophic character according to chlorophyll a, mesotrophic as for total phosphorus and secchi disc depth; Kovada Channel has hypertrophic character with regard to TP and mesotrophic character as for chlorophyll a. However, according to data gathered from the three stations of Lake Kovada, it has eutrophic character in terms of TP and SDD, and mesotrophic character according to chlorophyll a.