Sürdürülebilir Kalkınma Amaçları

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• MakaleAçık Erişim2025/r/gumushane/10484
  Determination of Mineral, Fatty Acid, and Soluble Carbohydrate Profiles of Green Algae Ulva rigida, Chaetomorpha linum, Codium fragile, Caulerpa prolifera and Caulerpa racemosa f. requienii Collected from Turkiye Coasts

  Yucetepe, Aysun; Altuntas, Umit; Sensu, Eda; Izci, Yunus; Ozcelik, Beraat; Okudan, Emine Sukran

  The nutritional properties of five different green macroalgae including Ulva rigida, Chaetomorpha linum, Codium fragile, Caulerpa prolifera and Caulerpa racemosa f. requienii from Turkey were investigated. The chemical composition of green macroalgae was varied, with ash, crude fiber, protein, lipid and carbohydrate ranging from 40.71 to 52.82%, 12.02-17.56%, 4.40-26.19%, 0.57-3.85% and 4.58-42.28% in dry weight, respectively. The fatty acid contents of the algae were quite variable and palmitic acid (C16) was found to be the primary fatty acid for all the samples with a value of more than 49.61%. Palmitic acid was followed by oleic acid, which is a monounsaturated fatty acid. This study revealed that green algae are rich in important soluble carbohydrates such as myo-inositol and glucose, health promoting unsaturated fatty acids (mainly oleic acid) and essential macroelements such as potassium, magnesium and microelements such as iron, zinc and selenium. The results of the current study contribute to a better understanding of macroalgae and encourage their use in food-related applications.

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• MakaleAçık Erişim2024/r/gumushane/10356
  Diatom Communities in the Littoral Sediments of the Robert Island's Lakes, South Shetland Islands, Antarctica

  Akar, Bulent; Güney, Aysegul; Özkan, Korhan; Avci, Utku; Kandemir, Raif

  The study area is situated at Robert Island, which is located in the South Shetland Islands in the northwest of the Antarctic Peninsula. The diatom samples were taken as part of the Turkish Antarctic Expedition (TAE-II) which took place between March and April 2018. The samples were collected from the surface of sediments (c. 5 cm) at a depth of approximately 20 cm, 50-100 cm from the littoral zones of an inland glacial lake (L1) and three coastal lakes (L2, L3 and L4) situated on glacier-free area on Robert Island. The main objective of this study was to reveal the diversity and the abundance of diatom communities in the littoral sediments of the lakes on Robert Island. The lakes were shallow and oligotrophic freshwater lakes, although the coastal lagoons had a high conductivity and nutrient concentration. Twenty-six diatom taxa belonging to Achnanthes (1), Fragilaria (1), Frustulia (1), Gomphonema (1), Halamphora (1), Hantzschia (1), Hippodonta (1), Humidophila (2), Luticola (3), Melosira (1), Nitzschia (4), Pinnularia (3), Planothidium (2), Psammothidium (2), Stauroneis (1) and Stephanopterobia (1) were identified in the samples from these lakes. The coastal lake L2 showed the highest richness of diatom communities among the in studied lakes, with 21 identified taxa.

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• MakaleAçık Erişim2017/r/gumushane/15067
  Diversity and ecology of benthic diatoms in karagöl lake in karagöl-Sahara national park (Şavşat, Artvin, Turkey)

  Akar, Bülent; Şahin, Bülent

  The main goal of this study is to determine the composition, diversity and ecology of benthic diatoms in Karagöl Lake in Karagöl-Sahara National Park. Monthly sampling (from sediments, stones and aquatic plants in littoral zone of the lake) taken in three consecutive years revealed 57 diatom taxa with Gomphonema and Pinnularia being the most abundant species while other genera are represented with three or fewer species. Lindavia ocellata was the most dominant taxon in the samplings examined throughout the whole study. The values of diversity and evenness indices are high during the spring and early summer. Based on cluster analysis for monthly samples of epipelic diatom, there are two different groups at the lowest similarity level. The associations between August 2010 and September 2010 months are the most significant with 86.02%. The organism number of epipelic diatoms showed positive correlation (P<0.01) with dissolved oxygen, while negative correlation (P<0.05) with temperature. Detailed floristic and ecological examination of the benthic diatom communities has not been carried out before this study in this lake. Therefore, this study is the first to our knowledge towards revealing aquatic benthic diatom biodiversity of Karagöl-Sahara National Park and provides basis for future investigations.

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• MakaleYalnız künye2014/r/gumushane/19086
  Karagöl- Sahara Milli Parkı ndaki (Şavşat-Artvin/Türkiye) Karagöl den yeni desmid kayıtları

  Akar, Bülent; Şahin, Bülent

  The benthic algal flora of Karagöl Lake (Şavşat, Artvin) was investigated between October 2008 and September 2010.Actinotaenium diplosporum var. americanum, Cosmarium pseudoexiguum, Gonatozygon kinahanii, Staurastrum boreale var.quadriradiatum, S. hantzschii and Staurodesmus dejectus var. apiculatus were recorded for the first time for the desmid floraof Turkey.

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• MakaleYalnız künye2014/r/gumushane/12075
  New desmid records of Karagöl Lake in Karagöl-Sahara National Park (Şavşat-Artvin/Turkey); [Karagöl-Sahara Milli Parki{dotless}'ndaki (Şavşat-Artvin/Türkiye) karagöl'den yeni desmid kayi{dotless}tlari{dotless}]

  Akar, Bülent; Şahin, Bülent

  The benthic algal flora of Karagöl Lake (Şavşat, Artvin) was investigated between October 2008 and September 2010. Actinotaenium diplosporum var. americanum, Cosmarium pseudoexiguum, Gonatozygon kinahanii, Staurastrum boreale var. quadriradiatum, S. hantzschii and Staurodesmus dejectus var. apiculatus were recorded for the first time for the desmid flora of Turkey.

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• MakaleYalnız künye2010/r/gumushane/19288
  Economic analysis and sustainability of Turkish marine hatcheries

  Kurtoğlu, İlker Zeki; Canbaz, Ali Alkan; Küçük, Haydar; Ozdemir, Attila

  Çalışmada, Türkiye deniz balıkları yavru üretiminin %61,5’ini karşılayan 7 lider kuluçkahane için ekonomik analiz gerçekleştirilmiş ve sürdürülebilirlikleri değerlendirilmiştir. Bunun için, yatırım masraflarını içeren sabit gider ile yem, işçilik, enerji, yakıt, su, oksijen ve ilaç giderlerini içeren işletme giderleri, her bir işletme için yüz yüze görüşmelerle belirlenmiştir. Ayrıca, AB FP6 fonlarınca desteklenen SUSTAINAQ akronimli proje kapsamında düzenlenen anket çalışmasında, her bir kuluçkahanenin üretim metotları, üretilen türler ve pazarlama teknikleri incelenmiş ve sektörün darboğazları, fırsatları, mevcut durumu, yapılanması ve sürdürülebilirliği değerlendirilmiştir. Çalışma sonunda, toplam gelir gider oranının %22,0 ile %97,8 arasında değiştiği gözlemlenmiştir. Kapalı devre balık üretim sistemlerinin yüksek miktarda işletme ve yatırım masrafları ile kalifiye teknik personel ihtiyacı gerektirmesine karşın, arazi kullanımı, kullanılan suyun niteliği ve niceliği ve çevresel yaklaşımlar açısından Türkiye deniz balıkları kuluçkahanelerinin sürdürülebilirliği için öneminin yüksek olduğu görülmüştür.

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• MakaleAçık Erişim2010/r/gumushane/13233
  Economic analysis and sustainability of Turkish marine hatcheries; [Türkiye Deniz Balıkları Kuluçkahanelerinin Ekonomik Analizi ve Sürdürülebilirliǧi]

  Kurtoglu, Ilker Zeki; Kucuk, Haydar; Alkan, Ali; Özdemir, Atilla

  The economic analysis was performed and sustainability was evaluated for 7 leader Turkish marine hatcheries which have 61.5% of Turkish total marine fish fry production. For this purpose, the fixed cost including investment and operational costs including feed, labor, energy, fuel, water, oxygen, and medicament costs were determined by face to face interview for each hatchery. Also, production methods, species cultured and marketing techniques of each hatchery were investigated and conflicts, opportunities, projections, structuring and sustainability of the sector were evaluated by questionnaire designed in the scope of SUSTAINAQ, a FP6 Project supported by EU. As a result, it was seen that the ratio of total cost to total income changed between 22% and 97.8%. Although the RAS requires high operation and initial investment costs and highly qualified technicians, it is seen that it will be very important for sustainability of Turkish marine hatcheries because of land, quality and quantity of water and environmental approaches.

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