Akademik Veri Yönetim Sistemi
12th International Conference on the Mediterranean Coastal Environment (MEDCOAST), Varna, Bulgaristan, 6 - 10 Ekim 2015, ss.239-250
Cymodocea nodosa was commonly distributed between 5 to 20 m, abundantly inbetween depths of 10 and 25 m. The meadow inhabited a region characterized with relatively less dense, less salty and lower Secchi disc depth. No statistical differences in the leaf area and weight were found among the seasons, but among the bottom depths. Other seagrass, Posidonia oceanica; formed two large beds with a changing bottom depth range of. 1 to 28 m in the Gulf, but was found abundantly at depths of 10-15 m. Seasonal differences were observed for the relationships between the leaves LA - leaf wet weight. Morphometric characters and density of Posidonia were significantly different in time (season) and space (depth). Posidonia was mostly found on the bottom of rocks and sediments containing gravel of 13-40% as well as sediments with high content of CaCO3 and optical characters of near-bottom waters with PAR values of 10%-32%, and the surface water temperature in a range of 28.8-29.3 degrees C in the Gulf. Vertical rhizome and leaves of Cymodocea reflected significant acoustical energy to be detected whereas the rhizome of Posidonia contributed echo energy to those of their leaves to make the biomass estimation uncertainties. Factors of the orientation, classified biomass and leaves of Posidonia did not show significant variation and difference in the acoustical energy returned from the leaves of the seagrass. Any epiphytic organism has not been recorded on the Posidonia leaves while leaves of Cymodocea have hosted a coralligeous alga, Pneophyllum fragile in a certain period of December-August. This hostage performed a significant contribution to acoustical energy of the leaves. According to the CA analysis results, first component discriminated the acoustic characters of Cymodocea and Posidonia species with an explained variance of 81%. In the statistical discrimination of the species, the characteristic parameters, the average acoustic energy coefficient (sa), the maximum value and the standard deviation of sa, mode and the thickness of sediment showed positive correlation but the E12 showed correlation on the CA1. Furthermore, spatial differences in acoustic characters (maximum, skewness and kurtosis of the sa) of Cymodocea inhabited between Finike and Kekova-Kas were explained by a variance of 25% on the CA2.