%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture non répertoriées par l'AERES
%A Charpy, Loïc
%A Charpy Roubaud, Claude
%T A model of the relationship between light and primary production in an atoll lagoon
%D 1990
%L fdi:34225
%G ENG
%J Journal of Marine Research
%K ATOLL ; PHYTOPLANCTON ; PHYTOBENTHOS ; LUMIERE ; PRODUCTION PRIMAIRE ; RELATION INTERSPECIFIQUE ; MODELE
%K POLYNESIE FRANCAISE ; TUAMOTU
%K TIKEHAU ATOLL
%P 357-359
%U https://www.documentation.ird.fr/hor/fdi:34225
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_5/b_fdi_31-32/34225.pdf
%V 70
%W Horizon (IRD)
%X The Tikehau atoll (Tuamotu Archipelago, French Polynesia) is located at 14°S 148°W. Phytoplankton and sand microalgae are the most important primary producers of the lagoon. They were studied for 4 years. The relationship between light energy and lagoonal primary production was measured by using the 14C method for phytoplankton and O2 method for phytobenthos. Incubations, carried out #in situ$, were made at different depths and light exposition times. Irradiance was hight and 17% of the light energy measured at the surface reached 25 m (lagoon average depth). Maxima of phytoplankton and phytobenthos productions occured at low depths; there was therefore no photoinhibition of photosynthesis. Correlations between light energy and primary production were strong, especially for phytobenthos. Multiplicative linear regression models (production #vs$ light) associated with an exponential linear regression model (light #vs$ depth), allowed planktonic and benthic primary production to be predicted from the depth and the light energy received at the surface
%$ 036MILMAR02