Çanakkale Onsekiz Mart Üniversitesi Gökçeada Uygulamalı Bilimler Yüksek Okulu Balıkçılık Teknolojisi Bölümü, Gökçeada Çanakkale
Küçük Resim Yok
Tarih
2016
Yazarlar
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Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Çalışma, yasadışı trol avcılığının yoğun olduğu İzmir Orta Körfezi'ni "örnek olay" biçiminde derinlemesine incelenmesini ve çözüm için planlanan ön hazırlıkları kapsamaktadır. Balıkçı barınakları, balıkçı tekneleri (boy, motor gücü, avcılık ruhsatı vb.) ve trol ağı özellikleri (yatay ağız açıklığı, YA; ağ uzunluğu, AU vb.) tespit edilmiştir. İzmir'de 2010-2014 yılları arasında, Sahil Güvenlik unsurları tarafından yasadışı avcılık faaliyeti sırasında yakalanan trol teknesi 160 civarındadır. Yasadışı avcılık noktalarına ait koordinatlar deniz haritası üzerinde işaretlenmiştir. İzmir genelinde 12 m'den küçük teknelerle kaçak avcılığın yapıldığı ve motor güçlerinin 7-452 kW arasında değiştiği belirlenmiştir. İzmir Körfezi'nde yakalananların %98,2'si trol avcılığı ruhsatı olmayan ve maksimum 286 kW motor gücüne sahip teknelerdir. Bu teknelerin %64'ü Güzelbahçe, Çamaltı Tuzlası ile Hekim Adası ve Çiçek Adaları arasında kalan alanda yakalanmıştır. Buradan yola çıkarak yasadışı trol faaliyetlerinin anti-trol yapay resifleri (ATYR) ile engelleme yoluna gidilmiş, "Güzelbahçe Y. Resif Sahası" ve "Tuzla Y. Resif Sahası" olmak üzere iki adet ATYR alanı belirlenmiştir. Kültür ve tabiat varlıklarının korunması için belirlenen dalışa yasak sahalar, bölgede yürütülmüş önceki yapay resif projeleri, iç körfezin temizlenmesi sırasında kullanılan döküntü sahası, yasal avcılık faaliyetleri, İzmir Körfezi'ndeki dalga yüksekliği verileri ve su derinlikleri dikkate alınmıştır. Donatılı betondan imal edilecek ATYR ağırlığı 2,9 ton ve boyutu 110x110x100 cm3 olarak hesaplanmıştır. ATYR bloklarının sahile paralel yerleştirildiği durumda, bloklar arası mesafeyi (BAM) bulmak için çelik halat uzunluğu (CU), palamar halatı uzunluğu (PU) ve ağ uzunluğundan (AU) av takımının toplam boyu (TB) 167 m olarak bulunmuştur. Sahile dik yerleştirilmesinde en küçük yasadışı trol teknesi temel alınmış, YA, AU, PU verilerinden trol kapıları arası mesafe (KM) 22 m olarak bulunmuştur. Sonuç olarak, 23-47 m derinlikler için, 200X25 m2'lik düzenle, 0,2 ha/adet yoğunlukta, her iki bölge için 6808 adet ATYR'ye ihtiyaç duyulmuştur. Projenin tamamlanma süresi 9 ay, maliyeti (inşa, nakliye, atım, kiralama bedeli vb.) 8.046.856 TL olarak ön görülmüştür
The case study was carried out to prevent illegal trawl fisheries in İzmir Bay. Fishing ports, fishing vessels (length, engine power, commercial fishing licence etc.) and trawl net specifications (horizontal mouth opening, NH; trawl net length, NL etc.) were surveyed. the number of trawlers fishing illegally off İzmir which were seized by Turkish Coast Guard (TCG) between 2010 and 2014 was approximate 160. the plots of illegal trawlers caught in fishing area by TCG were marked on the map. It was obtained that trawlers fishing illegally smaller than 12 m and engine power of vessels were between 7 and 452 kW in İzmir. 98.2% of seized illegal trawlers in İzmir Bay had no fishing license and had maximum 286 kW engine power. of these, 64% of trawlers were caught near coasts of Tuzla and Güzelbahçe localities. Therefore, two artificial reef sites (Tuzla and Güzelbahçe) were concluded in the Middle Bay of İzmir. While planning the project, banned dive sites for Preservation of Culture and Natural Heritage, previous artificial reef projects in the area, mud disposal site that is used during the cleaning of the inner bay, legal fishing activities, wave and current data in İzmir Bay and water depths were considered. Anti-trawl blocks were planned to construct reinforced concrete with 2.9 tones and 110x110x100 cubic centimeter. in the case where anti-trawl reefs are placed parallel to the coastline, total length of trawl gear (LG) was found as 167 m from the distance between the blocks (DB); warp length (WL), sweep length (SL), and NL. in other case (perpendicular to the coastline), minimum trawler was considered and distance between trawl doors (TD) was found as 22 m from NH, NL and, SL. Consequently, the distance between anti-trawl blocks and deployment depths were determined as between 25-200 m and 23-47 m, respectively. the protection ratio was 0.2 ha/number and total number of anti-trawl reefs was estimated as 6,808 for two artificial reef sites. the duration of the project was expected as nine months and the total budget of the project (construction, transportation, deployment, renting etc.) was estimated as 8,046,856 TL
The case study was carried out to prevent illegal trawl fisheries in İzmir Bay. Fishing ports, fishing vessels (length, engine power, commercial fishing licence etc.) and trawl net specifications (horizontal mouth opening, NH; trawl net length, NL etc.) were surveyed. the number of trawlers fishing illegally off İzmir which were seized by Turkish Coast Guard (TCG) between 2010 and 2014 was approximate 160. the plots of illegal trawlers caught in fishing area by TCG were marked on the map. It was obtained that trawlers fishing illegally smaller than 12 m and engine power of vessels were between 7 and 452 kW in İzmir. 98.2% of seized illegal trawlers in İzmir Bay had no fishing license and had maximum 286 kW engine power. of these, 64% of trawlers were caught near coasts of Tuzla and Güzelbahçe localities. Therefore, two artificial reef sites (Tuzla and Güzelbahçe) were concluded in the Middle Bay of İzmir. While planning the project, banned dive sites for Preservation of Culture and Natural Heritage, previous artificial reef projects in the area, mud disposal site that is used during the cleaning of the inner bay, legal fishing activities, wave and current data in İzmir Bay and water depths were considered. Anti-trawl blocks were planned to construct reinforced concrete with 2.9 tones and 110x110x100 cubic centimeter. in the case where anti-trawl reefs are placed parallel to the coastline, total length of trawl gear (LG) was found as 167 m from the distance between the blocks (DB); warp length (WL), sweep length (SL), and NL. in other case (perpendicular to the coastline), minimum trawler was considered and distance between trawl doors (TD) was found as 22 m from NH, NL and, SL. Consequently, the distance between anti-trawl blocks and deployment depths were determined as between 25-200 m and 23-47 m, respectively. the protection ratio was 0.2 ha/number and total number of anti-trawl reefs was estimated as 6,808 for two artificial reef sites. the duration of the project was expected as nine months and the total budget of the project (construction, transportation, deployment, renting etc.) was estimated as 8,046,856 TL
Açıklama
Anahtar Kelimeler
Balıkçılık, Zooloji
Kaynak
Su Ürünleri Dergisi
WoS Q Değeri
Scopus Q Değeri
Cilt
33
Sayı
1
