Keywords: Acanthoica quattrospina; Amphidinium spp.; Apedinella spinifera; Asterionellopsis glacialis; Bacteriastrum elongatum; Bacteriastrum furcatum; Bacteriastrum mediterraneum; Bacteriastrum parallelum; Bacteriastrum spp.; Bottle, Niskin; Calcidiscus leptoporus; Calciodinelloideae; Calculated; Cerataulina pelagica; Ceratium fusus; Ceratoneis closterium; Chaetoceros affinis; Chaetoceros brevis; Chaetoceros cf. curvisetus; Chaetoceros cf. muelleri; Chaetoceros constrictus; Chaetoceros contortus; Chaetoceros costatus; Chaetoceros curvisetus; Chaetoceros danicus; Chaetoceros diadema; Chaetoceros didymus; Chaetoceros diversus; Chaetoceros lorenzianus; Chaetoceros minimus; Chaetoceros peruvianus; Chaetoceros pseudocurvisetus; Chaetoceros socialis; Chaetoceros spp.; Chaetoceros tenuissimus; Chaetoceros teres; Chaetoceros tetrastichon; Chrysochromulina spp.; Coccolithophoridae indeterminata; Coronosphaera mediterranea; Cryptophyceae indeterminata; Dactyliosolen blavyanus; Dactyliosolen fragilissimus; Dactyliosolen phuketensis; Depth, bottom/max; Depth, top/min; DEPTH, water; Detonula pumila; Diatoms, centrales; Diatoms, pennales; Dictyocha fibula; Dinobryon coalescens; Dinobryon faculiferum; Dinoflagellates; Dinoflagellates, naked; Dinoflagellates, thecate; Diplopsalioideae; Ditylum brightwellii; Emiliania huxleyi; Eucampia zodiacus; Euglenophycea indeterminata; Eutreptiella spp.; Flagellates, heterotrophic; Guinardia flaccida; Guinardia striata; Gulf of Naples; Gyrodinium spp.; Haslea wawrikae; Helicosphaera carteri; Hemiaulus sinensis; Heterocapsa rotundata; Integrated long-term monitoring of the planktonic system in the coastal area; Inverted microscopy; Lauderia annulata; Leptocylindrus danicus; Leptocylindrus mediterraneus; Leptocylindrus minimus; Lessardia elongata; Leucocryptos marina; Lioloma spp.; MARECHIARA; Marechiara380-MCSSI; MCSSI-phyto1-10; Meringosphaera mediterranea; Minidiscus comicus; NIS; Odontella mobiliensis; Ollicola vangoorii; Ophiaster spp.; Oxytoxum scolopax; Oxytoxum spp.; Oxytoxum variabile; Pachysphaera cf. marshalliae; Papposphaera lepida; Paraphysomonas sp.; Paulinella ovalis; Phaeocystis spp.; Phytoflagellate indeterminata; Phytoplankton; Prasinophyceae indeterminata; Proboscia alata; Pronoctiluca spinifera; Prorocentrum minimum; Prorocentrum triestinum; Protoperidinium spp.; Pseudo-nitzschia delicatissima; Pseudo-nitzschia fraudulenta; Pseudo-nitzschia galaxiae; Pseudo-nitzschia pseudodelicatissima; Pseudo-nitzschia spp.; Pseudoscourfieldia marina; Pseudosolenia calcar-avis; Pyramimonas spp.; Rhabdosphaera clavigera; Rhizomonas setigera; Rhizosolenia imbricata; Rhizosolenia setigera; Rhizosolenia styliformis; Sample volume; Scrippsiella cf. trochoidea; Skeletonema pseudocostatum; Sphaerocalyptra quadridentata; Syracosphaera lamina; Syracosphaera molischii; Syracosphaera pulchra; Tetraselmis spp.; Thalassionema bacillare; Thalassionema nitzschioides; Thalassiosira cf. allenii; Thalassiosira mediterranea; Thalassiosira oestrupii; Thalassiosira rotula; Thalassiosira spp.; Umbilicosphaera sibogae; Vettoria