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Pregled bibliografske jedinice broj: 323939

Phytoplankton abundance and pigment biomarkers in the oligotrophic, eastern Adriatic estuary


Viličić, Damir; Terzić, Senka; Ahel, Marijan; Burić, Zrinka; Jasprica, Nenad; Carić, Marina; Caput Mihalić, Katarina; Olujić, Goran
Phytoplankton abundance and pigment biomarkers in the oligotrophic, eastern Adriatic estuary // Environmental Monitoring and Assessment, 142 (2008), 2; 199-218 (međunarodna recenzija, članak, znanstveni)


Naslov
Phytoplankton abundance and pigment biomarkers in the oligotrophic, eastern Adriatic estuary

Autori
Viličić, Damir ; Terzić, Senka ; Ahel, Marijan ; Burić, Zrinka ; Jasprica, Nenad ; Carić, Marina ; Caput Mihalić, Katarina ; Olujić, Goran

Izvornik
Environmental Monitoring and Assessment (0167-6369) 142 (2008), 2; 199-218

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Estuary; phytoplankton; biomarkers; salinity; nutrients; trophic state; Adriatic Sea

Sažetak
Phytoplankton distribution and environmental characteristics were determined in a shallow, highly stratified and oligotrophic estuary (Zrmanja, eastern Adriatic). Samples were collected in two contrasting seasons ; winter (February 2000), when river discharge was high, and in summer (July 2003), a period of drought. Phytoplankton distribution was closely related to salinity gradients, nutrient levels, and water residence time. Microscopic analysis revealed that phytoplankton was composed mainly of marine diatoms, dinoflagellates, cryptophytes, green flagellates, and coccolithophorids. The dominant biomarker pigments were fucoxanthin, alloxanthin and 19-hexanoyloxyfucoxanthin, while lower, but indicative contributions of peridinin and chlorophyll b were also noted. Maximum abundance and biomass were found in the middle estuary in winter and in the upper estuary in summer. The estuary is mostly P-limited. Development of chain-forming marine diatoms was evident in winter. Due to the reduced nutrient input in summer, the biomass accumulated in the upper estuary (1000 ng chlorophyll a/L) was composed mostly of nanoplanktonic unicellular diatoms, nanoplanktonic marine dinoflagellates, cryptophytes, and chlorophytes. The concentrations of about 200 ng/L hex-fuco, suggested that the contribution of prymnesiophytes to total biomass was comparable to that of diatoms and dinoflagellates. In the middle estuary and coastal sea, PO4 and TIN were 3.5 times lower, resulting in a 5&#8211; fold decrease in biomass (< 100 ng chlorophyll a/L). The oligotrophic Zrmanja and other karstic rivers discharging in the eastern Adriatic Sea, provide insufficient source of nutrients and low productivity of the eastern Adriatic Sea.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Kemija, Biologija



POVEZANOST RADA


Projekt / tema
098-0982934-2712 - Organski spojevi kao molekulski obilježivači antropogenog utjecaja na okoliš (Marijan Ahel, )
119-1191189-1228 - Struktura i razvoj zajednica mikroalga u trofičkom gradijentu (Damir Viličić, )
275-0000000-3186 - Struktura planktonskih populacija u trofičkom gradijentu u južnom Jadranu (Mirna Batistić, )

Ustanove
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb,
Hrvatski hidrografski institut,
Sveučilište u Dubrovniku

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE