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Abstract

Most commercial fisheries have experienced dramatic declines in fish stocks sourced by overcapacity, and thus, there has been a decline in the economic benefits of fishermen, industries, and regions that rely on fisheries for their support in Samsun. Therefore, the study evaluated productive efficiency measures for large scale modern commercial fishermen in Samsun Province, Turkey. Data envelopment analysis (DEA) was used to calculate productive efficiency measures. 55 trawlers and 65 fishermen who prefer to use trawlers together with seine fishing were interviewed in the 2007-2008 production periods. Research results showed that the mean economic efficiency of trawlers and the fishermen preferring to use trawlers together with seine fishing were 0.535 and 0.667, respectively. In Samsun, the primary source of economic inefficiency for trawlers was allocative inefficiency, while that of mixed fishermen was technical inefficiency. Decomposition of the technical efficiency showed that pure technical efficiency was the primary cause of the technical inefficiency for both trawlers and mixed fishermen. Most fishermen in both fishing types exhibited increasing return to scale. Research findings also revealed that basic source of inefficiency was overcapacity problems sourced by market failures and restrictions on season length in the research area. Policy measures aimed at developing training and extension programs, helping fishermen improve their technical information, eliminating inefficiency sourced by overcapacity, sustainable use of the fish stocks, and encouraging fishermen to obtain higher added value from fish and other sea products via processing, packing and storing fish instead of increasing fish production are recommended to increase productive efficiency in the research area. Samsun ili ticari balıkçılığında ekonomik yetersizliğin temel kaynağı trol ile balıkçılık yapanlar için tahsis yetersizliği iken, gırgır ve trolü birlikte kullanarak balıkçılık yapanlar için teknik yetersizliktir. Teknik etkinlik analizi sonuçları, inceleme alanında her iki grup balıkçı için teknik yetersizliğin ana sebebinin saf teknik etkinlik olduğunu göstermiştir. İncelenen balıkçıların büyük bir çoğunluğu ölçeğe artan getiriye sahiptir. Araştırma sonuçları ayrıca inceleme alanındaki ekonomik yetersizliğin bir diğer sebebinin de avlanma sezonunun kısıtlanmasının ve piyasa başarısızlığının yol açtığı aşırı kapasite problemi olduğunu göstermiştir. Balıkçılara yönelik eğitim ve yayım çalışmaları geliştirerek balıkçıların teknik bilgi düzeyinin artırılması, aşırı kapasiteden kaynaklanan yetersizliğin ortadan kaldırılması, balık stoklarının sürdürülebilir kullanımı ve balıkçıların balık ve diğer deniz ürünlerinin katma değerini yükseltmek için işleme, paketleme ve depolama gibi faaliyetlerle özendirilmesi inceleme alanında üretim etkinliğini artırabilecektir.Anahtar Kelimeler: Veri Zarflama Yöntemi, etkinlik ölçümleri, bootstrap metodu, balıkçılık, Samsun, Türkiye.

Analysis of the technical efficiency of Nile perch (Lates niloticus) fishers in the Tanzanian portion of Lake Victoria: A stochastic frontier analysis

“…Several studies (e.g. Sergio, 2011;Zibaei, 2012;Ceyhan & Gene, 2014;Jamnia et al, 2015) carried out on the role of technical efficiency in the fishery sector in developing countries indicate technical efficiency, and its determinants are the most important factors for planning fishery management programmes and regulations. A study by Crentsil and Essilfie (2014) As pointed out by New (2012), because changes in fishery management can influence vessel efficiency, recent studies have also focused on assessing the role of specific fishery management programmes and practices on technical efficiency (New, 2012) Other studies (e.g.…”

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“…So me of the commissioners work as who lesalers, while others operate as semi-wholesalers and retailers (Benli, 2009 A limited number of studies have been conducted in Turkey to investigate margins in the animal and animal p roduct marketing system (Topçu, 2004;Sayın et al, 2011;Yazıcı, 2011). The socioeconomic structure of fishermen has been investigated in other studies in the field of fisheries economics (Ünal, 2003;Çeliker et al, 2006;Güngör, Özen, & Güngör, 2007;Çeliker et al, 2008;Benli, 2009;Ceyhan &Gene, 2014). So me of the studies are related tofishery cooperatives (Ünal & Yercan, 2006;Akyol, Ceyhan, & Ünal, 2006;Doğan, 2010).…”

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“…In this context those studies for Foça (Ünal & Hoşsucu, 1996;Ünal, 2001;Ünal, 2002;Ünal, 2003;Ünal, 2004); for Black Sea (Çeliker et al, 2006); for Aegean Sea (Çeliker et al, 2008), for Mediterranean Sea (Taşdan et al, 2010); for Mersin, Taşucu (Rad & Delioğlan, 2006); and for Samsun (Ceyhan & Gene, 2014) can be indicated. In addition to these studies, a study is prepared by Güngör, Zengin, and Güngör (2007) for shrimp fisheries in Marmara Sea.…”

“…This, in turn, is related to the existence of the sustainable stocks of economic species in Sea of Marmara. In order fishermen to generate satisfactory income, besides the limited but high valued fish species, it is also crucial to ensure the sustainability of the stocks of small pelagic species such as anchovy, horse mackerel and sardine (Ceyhan & Gene, 2014).…”