Ecological Indicative Stressors of Native vs. Non-Native Fish in an Ultra-Oligotrophic Region of the Mediterranean Sea

In the present study, we investigated different ecological characteristics of native and non-native demersal fish collected in 2014–2015 on shelf Antalya Gulf Eastern Mediterranean Sea. Lessepsian migrants originating from Indo-Pacific Ocean were classified as non-indigenous species (NIS) other species, which mostly Atlanto-Mediterranean, indigenous (IS). The results showed that faunistic IS NIS differed significantly space but only partly over time. density diversity increased with seafloor depth, while opposite pattern was observed for NIS, found shallow waters. Proximity to rivers Posidonia oceanica meadows presence a marine protected area (MPA) also important factors determining differences NIS. ordination assemblages canonical correspondence analysis (CCA) V-shaped =-shaped it mainly determined by bottom depth. Altogether, took shape double strikethrough (V) due filling an available niche. Hierarchically, (“occupiers”) (“resisters”) shared shallowest waters, middle-shelf waters occupied (“gapers”) (“escapers”) separately. upper (“homekeepers”) “minorities” Finally, identified eight indicators IS: vegetation status, hierarchy, key water productivity, trophic level, life strategy morphometry.