THE ECOLOGICAL CHARACTERISTICS OF THE ROMANIAN LITTORAL LAKES – THE SECTOR MIDIA CAPE - VAMA VECHE

In the present study we have taken into account only the lakes between Midia cape and Vama Veche, and only those that have directly communicated with the sea. As origin, the littoral lakes from the south-eastern part of the Black Sea are of three categories: fluvio-marine (Corbu - Gargalac, Ta aul, T b cariei, Agigea, Techirghiol, Costine ti, Tatlageac, Mangalia); lagoons (Siutghiol, Comorova, Hergheliei - Mangaliei Moor); man-made (Belona, partially Costine ti, the three lakes of the Comorova complex and Hergheliei). The littoral lakes, due to their geographical position and to the climatic conditions of the area, are subject to water salinization processes. In the last period, as a consequence of the economical activities specific to agriculture, the freshwater input has been supplemented, and thus it begins to be felt a strong phenomenon of water freshening. The phenomenon must be stopped in the case of the lakes that accumulate therapeutically mud (Agigea, Techirghiol). In the case of the other lakes the water may be used, where is needed, in irrigations (Corbu -Gargalac, Tasaul etc.) or for fish hatching (Corbu -Gargalc, Ta aul, Tatlageac, Mangaliei). In the case of the lakes created for recreation, the water's salinity degree is not so important (Belona, Costine ti, Neptun, Jupiter, Tismana, Venus).