PUMA
Istituto di Scienze Marine     
Cerino F., Bernardi Aubry F., Coppola J., La Ferla R., Maimone G., Socal G., Totti C. Spatial and temporal variability of pico-, nano- and microphytoplankton in the offshore southern Adriatic Sea (Mediterranean Sea). In: Continental Shelf Research, vol. in press pp. 1 - 12. Eslsevier, 2012. [Online First 08 June 2011]
 
 
Abstract
(English)
The spatialandtemporalvariabilityofphytoplanktonwereinvestigatedinthesouthernAdriaticSeain the periodNovember2006-June2008.ThreestationsweresampledalongtheBari-Dubrovniktransect with aseasonalfrequency(exceptsummer2007andspring2008)atfourdepths(surface,maximum fluorescencedepthandtwointermediatedepths),withtheaimofanalyzingthestructureof phytoplanktoncommunityandevaluatethestandingstocksofthethreesizefractions(pico-,nano- and microphytoplankton). Abundanceswereonaverage5.4110775.97106 cells l1 for picophytoplankton,1.001067 6.70104 cells l1 fornanophytoplanktonand2.1610477.46103 cells l1 for microphytoplank- ton. Totalbiomassrangedfrom8.5to80.7 mg C l1. ThehighestvalueswererecordedinApril2007 (38.475.9 mg C l1), andthelowestonesinFebruary2008(13.871.5 mg C l1). Picophytoplankton was generallythemostabundantphototrophicfraction(onaverage,96%ofthetotalabundancesand 49% ofthetotalbiomass),whilenano-andmicrophytoplanktonprovidedaminorcontribution(4%and less than1%oftotalabundanceand35%and16%oftotalbiomassfornanophytoplanktonand microphytoplankton,respectively). A decreasinggradientfromwesttoeastwasobservedforpico-andnanophytoplanktonabundances and fortotalbiomass. The lowbiomassvaluesandthedominanceoftheautotrophicpicoplanktonfractioninthewhole area reflectedageneraloligotrophiccondition.Theeasternmoststation(AM9),characterizedbythe lowestphytoplanktonabundancesandbiomassandlownutrientconcentrations,resultedinstillmore oligotrophicconditionandprobablyinfluencedbytheIonianSurfaceWater(ISW),comingfromthe easternMediterranean.
DOI: 10.1016/j.csr.2011.06.006
Subject Phytoplankton


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