Unit:
Specialty Oceanography & Marine Environmental ManagementLibrary of the School of Science
Author:
Kressou Spyridoula
Supervisors info:
Περσεφόνη Μεγαλοφώνου, Αναπληρώτρια Καθηγήτρια Τμήμα Βιολογίας, ΕΚΠΑ (Επιβλέπουσα),
Ζερβουδάκη Σουλτάνα Ερευνήτρια Α΄ ΕΛΚΕΘΕ Ινστιτούτα Ωκεανογραφίας,
Γιαννακούρου Αντωνία Ερευνήτρια Α΄ΕΛΚΕΘΕ Ινστιτούτο Ωκεανογραφίας
Original Title:
«ΕΠΟΧΙΚΗ ΔΙΑΚΥΜΑΝΣΗ ΠΛΑΓΚΤΙΚΩΝ ΟΡΓΑΝΙΣΜΩΝ ΣΤΟ ΕΠΙΦΑΝΕΙΑΚΟ ΜΙΚΡΟΦΙΛΜ ΤΟΥ ΚΟΛΠΟΥ ΤΗΣ ΕΛΕΥΣΙΝΑΣ»
Translated title:
"SEASONAL VARIATION OF PLANKTONIC ORGANISMS IN THE SURFACE MICROFILM OF THE BAY OF ELEFSINA"
Summary:
Samples were collected from the Gulf of Eleusis to investigate seasonal changes in the first depth meters. More specifically, the sample collection was carried out on the surface microfilm (SML), the sub-surface water layer (ULW) and at the depth of 2 m of the water column (WC) at two stations, "Loutropyrgos" and "Pachi Megara". The sampling dates were February-2018, May-2018, September-2018 and February-2019. For each sample collected, bacteria, small dinoflagellates (<20μm), large dinoflagellates (>20μm), diatoms, blepharidotes and mesozooplankton were measured. The aim was to determine the variations in the abundance of all biological parameters in order to understand seasonal variations of the main plankton groups but also to determine the abundance of dominant and rare species. In Loutropyrgos, the greatest abundances of bacteria, large dinoflagellates and zooplankton were found in SML, while in Pachi, Megara, similar results were observed in small dinoflagellates, diatoms and zooplankton. For the remaining parameters - small Dinoflagellates, Diatoms and Blepharidotes for Loutropyrgos, while for Thickness Bacteria and large Dinoflagellates, maximum values were observed in ULW. All the above observations confirm the enrichment of the surface layer against the water column. However, more research is needed on surface microfilm with emphasis on daily and hourly changes in biological parameters, since they are directly affected by atmospheric parameters.
Main subject category:
Science
Keywords:
surface microfilm, plankton, ciliates, dinoflagellates, diatoms,
File:
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2024_master thesis_11-final.pdf
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File access is restricted only to the intranet of UoA.
