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Trace metal/phytoplankton interactions in the Skagerrak Croot, P.L.; Karlson, B.; Wulff, A.; Linares, F.; Andersson, K. (2002). Trace metal/phytoplankton interactions in the Skagerrak. J. Mar. Syst. 35(1-2): 39-60. http://dx.doi.org/10.1016/s0924-7963(02)00044-1 In: Journal of Marine Systems. Elsevier: Tokyo; Oxford; New York; Amsterdam. ISSN 0924-7963; e-ISSN 1879-1573, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 57722 [ download pdf ]

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Trefwoorden

Algae > Diatoms ANE, Skagerrak Aquatic communities > Plankton > Phytoplankton Chemical elements > Metals > Heavy metals > Zinc Chemical elements > Metals > Transition elements > Heavy metals > Cobalt Chemical elements > Metals > Transition elements > Heavy metals > Copper Chemical elements > Metals > Transition elements > Heavy metals > Iron Coccoliths Interactions Layers > Discontinuity layers > Pycnocline Trace elements > Trace metals Ceratium F.Schrank, 1793 [WoRMS]; Leptocylindricus danica; Synechococcus Nägeli, 1849 [WoRMS] Skagerrak [Marine Regions] Marien/Kust

Author keywords

skagerrak; trace metals; phytoplankton

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Auteurs		Top
Croot, P.L. Karlson, B. Wulff, A.	Linares, F. Andersson, K.

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Abstract

Algal community species composition, as estimated by high performance liquid chromatography (HPLC) pigments and microscopy analysis, and trace metal speciation (Cu and Co) and distributions (Fe, Zn, Co and Cu) were measured along a summer transect across the Skagerrak. In waters of Baltic origin, with elevated trace metals levels, but very low macronutrients, a mix of dinoflagellates and haptophytes dominated the low biomass. In the Jutland current, which had high dissolved iron concentrations, a mixed bloom (4-6 µg/l chl a) of diatoms (major species-Leptocylindricus danica) and dinoflagellates (Ceratium sp.) was present. In the waters of the central Skagerrak derived from the North Sea, below the low salinity Baltic water, a large diatom (major species-L. danica) bloom (7.7 µg/l) was present at 35 m. This bloom formed below the pycnocline, and was located at the nutricline for silicate. The lowest concentrations of trace metals were found in the water of North Sea origin. Synechococcus-like cyanobacteria were observed in the upper waters across the survey area, as were strong binding ligands for Cu, but no clear numerical relationship existed between them, as had been observed by Moffett [Deep-Sea Res. 42 (1995) 1273]in the Sargasso Sea. The [Co]/[Zn] hypothesis of Sunda and Huntsman [Limnol. Oceanogr. 40 (1995) 1404] for coccolithophorids and diatoms was examined using the field data collected.

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