TY - JOUR AU - Delille D., Gleizon F. Delille B. PY - 2007// TI - Spatial and temporal variation of bacterioplankton in a subAntarctic coastal area (Kerguelen Archipelago). JO - Journal of marine systems SP - 366 EP - 380 VL - 68 IS - 3-4 N2 - Bacterial abundance and production were measured monthly for one year along cross-shore transects in 3 sub-Antarctic fjords of the Kerguelen Archipelago (seven stations each). Mean values of the 3 most coastal (inside) and most offshore (outside) stations were used to describe the relationship between temperature, phytoplankton biomass, bacterial abundance and bacterial production over a one year annual cycle. The entire sampling protocol was repeated twice during each cruise: once at noon and once at midnight. Over the whole sampling period, the temperature ranged from 2.1 to 7.4 °C, while chlorophyll a concentrations varied by a factor of 10, and bacterial abundance and production varied by factors of 12 and 30, respectively. Within one day, all of these parameters sometimes varied by a factor of 4 between noon and midnight. A clear seasonality was observed for all of the parameters. However, while variations of phytoplankton and bacterial production paralleled those of temperature, bacterial abundance was low in midsummer and maximum in autumn. While no general pattern could be observed from the total data set, spatial gradients could interfere strongly with temporal changes. SN - 0924-7963 N1 - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=4523), last updated on Tue, 28 Apr 2009 10:45:46 +0200 ID - DelilleD.2007 ER -