Articles

Title:	Abundance and morphotype diversity of surface bacterioplankton along the Gdynia - Brest transect
Authors:	Żmuda Magdalena
Abstract:	Abundance, biomass and morphotype diversity of bacterioplankton were analyzed in surface samples collected on a transect from Gdynia (Poland) to Brest (France) between 5 and 17 October, 2002. The total bacterial number ranged from 1.52 x 105 ± 7.0 x 103 ml^-1 (SE) to 4.08 x 106 ± 3.1 x 105 ml^-1. Samples from the Baltic Sea showed both the highest number of bacteria and the largest variability. Total bacterial biomass ranged from 5.45 ± 0.99 to 128.17 ± 13.58 μg C l^-1. The dominant morphotype were rods (82.4% to 95.7%) especially those with average cell volume below 0.1 μm³. Regional differences in the average cell volume ranged from 0.099 to 0.382 μm³. Autotrophic bacteria comprised on average 13.5 % of total bacterioplankton biomass, but increased to 48% at the west side of the English Channel. The high bacterial abundances discussed here shed light on the importance of the ocean surface as a habitat for prokaryotes and as a reservoir of bacterial biomass.
DOI:
Type of paper:	Original research paper
Pages:	3 to 17
Cytation:	Żmuda M.J., 2005, Abundance and morphotype diversity of surface bacterioplankton along the Gdynia - Brest transect, Ocean. Hydrob. Studies, 34(4): 3-17
Keywords:	marine bacteria, horizontal distribution, image analysis, number, biomass
Year:	2005
Category:
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