Keywords: Acanthoica aculeata; Acanthoica bidentula; Acanthoica rubus; Aegaeo; Aegean Sea; Algirosphaera spinulosa; Anthosphaera bicornu; Anthosphaera fragaria; Anthosphaera robusta; Bottle, Niskin 8-L; Braarudosphaera bigelowii; Calcisolenia murrayi; Calyptrosphaera circumspicta; Calyptrosphaera dalmatica; Calyptrosphaera globosa; Calyptrosphaera gracillima; Calyptrosphaera incisa; Calyptrosphaera insignis; Calyptrosphaera sphaeroidea; Calyptrosphaera tubifera; Calyptrosphaera uvella; Coccolithophoridae; Coccolithus leptoporus; Coccolithus pelagicus; Coccolithus wallichii; DEPTH, water; Diatoms; Dictyocha fibula; Dinoflagellates; Emiliania huxleyi; Helicosphaera hyalina; Helladosphaera aurisinae; Helladosphaera cornifera; Homozygosphaera perennis; MARCH-1998; MARCH-1998-GN36199804611MNB03; Mass Transfer and Ecosystem Response; MATER; Michaelsarsia falklandica; Microplankton; NIS_8L; Ophiaster hydroideus; Oscillatoria fillaments; Periphyllophora mirabilis; Pontosphaera achillae; Pontosphaera discopora; Pontosphaera haeckeli; Pontosphaera nana; Pontosphaera steueri; Pyraminomonas sp.; Rhabdosphaera multistylis; Rhabdosphaera nigra; Rhabdosphaera subopaca; Rhabdosphaera tubulosa; SESAME; Southern European Seas: Assessing and Modelling Ecosystem Changes; Sphaerocalyptra elegans; Sphaerocalyptra quadridentata; Syracolithus brandti; Syracolithus catilliferus; Syracolithus clypeatus; Syracolithus cordiformis; Syracolithus cornus; Syracolithus coronata; Syracolithus dalmaticus; Syracolithus dentatus; Syracolithus grundi; Syracolithus oculatus; Syracolithus ovatus; Syracolithus pastillusus; Syracolithus pilus; Syracolithus profundus; Syracolithus robustus; Syracolithus schilleri; Syracolithus scutatus; Syracosphaera cornus; Syracosphaera coronata; Syracosphaera pulchra; Syracosphaera schilleri; Umbilicosphaera mirabilis; Umbilicosphaera sibogae; Zygosphaera debilis; Zygosphaera hellenica