Transparent exopolymeric particles' distribution in the northern adriatic and their relation to microphytoplankton biomass and composition

Radić, Tomislav; Kraus, Romina; Fuks, Dragica; Radić, Jadranka; Pečar, Osvin (2005) Transparent exopolymeric particles' distribution in the northern adriatic and their relation to microphytoplankton biomass and composition. Science of the Total Environment, 353 (1-3). pp. 151-161. ISSN 0048-9697

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Abstract

Transparent exopolymer particles (TEP) are generated during transformation processes within the non-living organic matter continuum in the seawater. Seasonal dynamics of TEP along the Po River Delta - Rovinj transect was followed during the three years period, using a spectrophotometric method of determination of TEP. Relationships between TEP and phytoplankton biomass (chlorophyll a), abundance and composition, as well as phaeophytin, were analysed. Microphytoplankton spring blooms are confirmed to be an important source of TEP, with some species more related to TEP concentration dynamics, such as Chaetoceros sp. and Skeletonema costatum. Notable spatial west to east gradient of autotrophic biomass and consequently of TEP was observed, as well as gradual decrease with depth. In addition, TEP concentration increments were observed up to two months before the mucilage events followed by the decrease of TEP concentration during the event itself. Pattern of TEP dynamics in the years with mucilage events was the most pronounced in 2002, when the event was spatially and temporally the most extended.

Item Type:

Article

Uncontrolled Keywords:

TEP; Microphytoplankton; Chlorophyll a; Northern Adriatic; Mucilage

Subjects:

NATURAL SCIENCES > Geology
NATURAL SCIENCES > Biology
NATURAL SCIENCES > Interdisciplinary Natural Sciences > Marine Science

Divisions:

Center for Marine Research

Projects: