@article{fdi:010013316, title = {{T}emporal and spatial stability of bacterioplankton biomass and productivity in an atoll lagoon}, author = {{T}orr{\'e}ton, {J}ean-{P}ascal and {D}ufour, {P}hilippe}, editor = {}, language = {{ENG}}, abstract = {{S}patial and temporal variations of bacterioplankton biomass, production and growth rates were investigated 6 times from 1991 to 1994 in {T}ikehau lagoon ({T}uamotu, {F}rench {P}olynesia). {T}he water column was homogeneous from the surface to the bottom (20 m) at the reference station but some horizontal variations were detected, with biomass and production increasing from the reef-flat spillways (oceanic water inflow) to the main part of the lagoon and decreasing from the relatively eutrophic shore (near the village) to the main part of the lagoon. {H}owever, both of these perturbations were limited to the immmediate vicinity of these areas. {D}iel fluctuations of bacterial biomass and growth rate were slight (coefficient of variation, {CV} < 20%) and showed no significant pattern. {D}ay-to-day variations recorded over periods of up to 20 consecutive days appeared also to be limited ({CV} < 25%). {A} significant correlation between wind and total abundance of bacteria in the water column suggested that these day-to-day variations may be in part explained by wind, probably inducing resuspension of sediments. {N}o significant pattern appeared from comparison of the 6 cruises spread over different seasons. {C}ruise averages differed slightly from each other, with {CV} for all cruises averaging 34, 10 and 41% for bacterioplankton biomass, production and growth rate, respectively. {T}ikehau lagoon appears to be a very stable ecosystem for bacterioplankton processes and therefore differs strongly from other reef water column systems. {T}his untypical stability might be explained by the long residence time of water (170 d), the strong stability of the oceanic surrounding water ({S}outh {P}acific {G}yre), the weak seasonality of primary producers and the limited inputs from corals, bordering islands and sediments. ({R}{\'e}sum{\'e} d'auteur)}, keywords = {{MICROPLANCTON} ; {BACTERIE} ; {BIOMASSE} ; {PRODUCTIVITE} {PRIMAIRE} ; {LAGON} ; {VARIATION} {SPATIALE} ; {VARIATION} {TEMPORELLE} ; {POLYNESIE} {FRANCAISE} ; {TIKEHAU} {LAGON}}, booktitle = {}, journal = {{A}quatic {M}icrobial {E}cology}, volume = {11}, numero = {}, pages = {251--261}, year = {1996}, DOI = {10.3354/ame011251}, URL = {https://www.documentation.ird.fr/hor/fdi:010013316}, }