Abstract
The present study analyzed the spatiotemporal changes of Ostracoda fauna in eight coastal lagoons in the Enez-Evros delta (Tuzla Lake 1, Tuzla Lake 2, Tuzla Lake 3, Taz, Işık, Dalyan, Kuvalak, and Taşaltı), located along the northern Aegean Sea coastline of Turkey. Recent ostracod samples collected from the eight lagoons were analyzed, and 16 living ostracod species (belonging to 14 genera) were identified during the sampling periods. The most abundant species were found to be Cyprideis torosa and Loxoconcha elliptica. C. torosa, a cosmopolitan and opportunistic species of Ostracoda, was found in all the studied coastal lagoons. All ostracod species determined in the lagoons were grouped into three assemblages: Group 1: halophilic continental freshwater species (F. fabaeformis, C. vidua, D. stevensoni, E. virens, H. salina, I. biplicata, I. bradyi, L. inopinata, and S. aculeata); Group 2: euryhaline and typical brackish water species (C. torosa and L. elliptica); Group 3: marine (coastal: A. convexa, L. rhomboidea, C. elongata, and X. communis) and brackish (lagoonal: L. lacertosa) water species. These species of Ostracoda were shown to be affected by environmental conditions. Analyses with the physicochemical variables and species (Spearman’s rank correlation coefficient and Canonical Correspondence Analysis) confirmed that ostracod distribution in the Enez lagoons are controlled by seawater–freshwater inputs and by salinity. The purpose of this work is about to present data about of the Enez lagoons, and analyze the diversity of ostracods of them.
Highlights
According to Kjerfve (1994), coastal lagoons are usually positioned parallel to the coast, separated from the sea by a sand barrier and connected to the sea by one or more linking channels or inlets with shallow waters
Twenty-one bird species were observed in eight lagoons in this study, showing how the eight lagoons and the area of the Evros delta located in Turkey form an important biological area for many bird species in regard to their breeding, feeding, and sheltering
Twelve sites from the Enez lagoon complex were selected for sampling, and a total of 16 ostracod species were determined from these sampling sites
Summary
According to Kjerfve (1994), coastal lagoons are usually positioned parallel to the coast, separated from the sea by a sand barrier and connected to the sea by one or more linking channels or inlets with shallow waters. Floods by accumulating water, and prevent erosion through the accumulation of sediments. Lagoons salinity values vary from freshwater (or low salt concentration levels in mouths of creeks/river mouth) to brackish water (in connected sections of it’s to sea). Turkey is a rich country with regard to the types and the number of wetlands. Turkey’s wetlands are located on important bird-migration routes, and close to 420 bird species find refuge in Turkey’s wetlands, with about 110 species visiting in the summer to nest (Şişman & Özyavuz 2010). Twenty-one bird species were observed in eight lagoons in this study, showing how the eight lagoons and the area of the Evros delta located in Turkey form an important biological area for many bird species in regard to their breeding, feeding, and sheltering. Lake Gala and the Enez lagoons in this Evros delta are ecological units of international importance for their rarity and sensitivity (Şişman & Özyavuz 2010)
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