Trophic Pathways from Pelagic and Littoral Sources Supports Food Web in an Eutrophic Natural Lake (Lake Zinav, Turkey)      
Yazarlar (4)
Dr. Öğr. Üyesi Ekrem BUHAN Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Şenol Akın
Yozgat Bozok Üniversitesi, Türkiye
Nehir Kaymak
Akdeniz Üniversitesi, Türkiye
Halil Turan
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Turkish Journal of Fisheries and Aquatic Sciences
Dergi ISSN 1303-2712 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q4
Makale Dili İngilizce
Basım Tarihi 03-2018
Cilt No 19
Sayı 2
Sayfalar 99 / 107
DOI Numarası 10.4194/1303-2712-v19_2_02
Makale Linki http://www.trjfas.org/pdf/issue_19_02/0202.pdf
Özet
Stable isotope analysis was used to determine which basal sources supporting native and invasive cyprinid fishes are important in a dimictic-eutrophic lake (Lake Zinav, Turkey). We sampled potential primary producers (littoral, pelagic sources and detritus), fish and macroinvertebrates from littoral and pelagic zones of the lake during spring and summer in 2013. The relative importance of basal sources assimilated by invasive (Carassiusspp.) and native fishes (Squalius cephalus, Capoeta banarescui,Cyprinu scarpio) was estimated using SIAR mixing model. Consumers such as collector-gatherer (1) (-35.33‰) and S. cephalus, Carassiusspp., and C. carpio had more ¹³C depleted (-32.12,-31.09,-31.54‰, respectively), while C. banarescui, collector-gatherer (2), and etc. had more ¹³C enriched values (-25.03,-26.55‰, respectively). SIAR and gut contents indicate that main energy sources were highly variable among fishes, three main sources contributed to invasive fish, but littoral sources for C. banarescui, pelagic sources for S. cephalus, and detritus and pelagic sources for C. carpiowere important. Consumer’s biomass were also partially linked to detritus. Our study suggested that all species promoted coupling of pelagic and littoral pathways, and competition for resources among invasive and native fishes was likely to cause resources sharing, and to shift to suboptimal resources.
Anahtar Kelimeler
Stable isotope analysis | Gut content | Invasive fish | Habitat coupling | Cyprinids