Su ürünleri yetiştiriciliği uygulamalarının seçilen toprak balık havuzlarının tortu özellikleri üzerine etkileri, Ife Kuzey Yerel Yönetim Bölgesi, Osun Eyaleti, Nijerya

Öz

Su ürünleri uygulamalarının Osun Eyaleti Ife Kuzey Yerel Yönetim Bölgesi'nde seçilmiş altı adet toprak balık havuzunun dip çökelti kalitesi üzerindeki etkisi iki yıllık bir süre boyunca araştırılmıştır. Balık havuzları gübreleme uygulaması ve su akış rejimine göre iki akmayan havuzdan (FNF) oluşan üç set halinde gruplandırıldı; iki adet akış havuzu (FF) ve iki adet döllenmemiş akış havuzu. İncelenen sediman kalitesi parametreleri, standart yöntemler kullanılarak renk ve dokusal kompozisyon, tuzluluk parametreleri, ana iyonlar, organik parametreler ve ağır metalleri içerir. Parametreler, döllenmiş akış havuzunda önemli ölçüde mevcut olan kalsiyum dışında, üç set balık havuzu için istatistiksel olarak farklı değildi (P> 0.05). Bununla birlikte, gübrelenmiş havuzlar besin bakımından daha zengindi ve gübrelenmemiş havuzlara göre daha iyi drenaj kalitesine sahipti. Gübrelenmiş havuzlarda (FNF ve FF) daha yüksek ortalamaya sahip parametreler, ortalama% 16 daha yüksek iken, akıştan etkilenen parametreler, kurşun içeren akış havuzlarında (FF ve NFF) ortalama% 67 daha yüksekti (7,00 kat ) akış etkisine en çok katkıda bulunan. Bu parametrelerden katyonlar, anyonlar ve mikro besinlerin, döllenmiş akış havuzlarında en yüksek ortalama konsantrasyona sahip olduğu bulundu. Bununla birlikte, döllenmiş akış havuzlarında minimum kil, yarık ve besin birikimi ve önemli düzeyde kalsiyum iyonu, bu balık kültürü yönteminin en uygun olduğunu ortaya koydu.

Anahtar Kelimeler

• besin
• tortu tuzluluğu
• balık kültürü
• drenaj
• ağır metal

Effects of Aquacultural Practices on the Sediment Characteristics of Certain Type of Earthen Fishponds

Öz

The effect of aquacultural practices on the bottom sediment quality of six selected earthen fishponds in Ife North Local Government Area of Osun State was investigated for a period of two years. The fishponds were grouped with regard to fertilization practice and water flowage regime into three sets comprising two fertilized non-flow-through ponds (FNF); two fertilized flow-through ponds (FF) and two unfertilized flow-through ponds (NFF). The investigated sediment quality parameters include color and textural composition, salinity parameters, major ions, organic parameters and heavy metals using standard methods. The parameters were not statistically different (P > 0.05) for the three sets of fishponds with the exception of calcium which was significantly available in the fertilized flow-through pond. The fertilized ponds were however richer in nutrient and of better drainage quality than the unfertilized ponds. The parameters with higher mean in the fertilized ponds (FNF and FF) were 16% higher on average and flow-affected parameters were 67% higher on average in the flow-through ponds (FF and NFF), of which 7.00-fold higher lead concentration contributed most to this situation. Of these parameters, cations, anions, micronutrients were found to be of highest mean concentration in fertilized flow-through ponds. However, the presence of significant levels of calcium ions as well as minimal accumulation of clay, silt and nutrients in fertilized flow ponds made this fish culture method most suitable.

Anahtar Kelimeler

• nutrient
• sediment salinity
• fish culture
• drainage
• heavy metal

Kaynakça

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