Publication Date:
2021-05-19
Description:
L'etude de la dynamique trophique du zooplancton nous a permis de mettre en evidence son role essentiel dans l'elaboration et la transformation de la matiere organique aux premiers echelons de la chaine alimentaire marine. Le zooplancton conduit la matiere organique du phytoplancton vers les carnivores superieurs( poissons planctonophages, especes benthiques). Son etude est un caractere essentiel pour la comprehension des relations trophiques au sein du zooplancton, mais aussi entre phytoplancton et zooplancton. Les nauplii de copepodes et les tintinnides constituent les deux groupes les plus importants du microzooplancton (40,46). Les copepodes pelagiques, principal representant du mesozooplancton, constituent durant l'annee d'etude (Avril 92-Mars 93) 34,25% du zooplancton total. Les carnivores eux sont essentiellement representes par Oithona nana, Podon polyphemoides et Sagitta inflata.
Description:
Study of the trophic dynamics of the zooplankton in Bou Grara Lagoon, Tunisia confirmed its essential role in the production and transformation of organic matter into the first steps of the marine food chain, leading it to the upper carnivores (planktonophagic fish, benthic species). Phytoplankton trophic dynamics is an important characteristic in the understanding of trophic relationships both within zooplankton, and also between phytoplankton and zooplankton. Copepod nauplii and tintinnids comprise the 2 most important groups of microzooplankton (40.46%). Pelagic copepods, the major group representing the mesozooplankton, comprise 34.25% of the total zooplankton during the year studied (April 1992-March 1993). The carnivores are mainly represented by Oithona nana, Podon polyphemoides and Sagitta inflate.
Description:
Published
Keywords:
Gyrodinium favella
;
Organic matter
;
Zooplankton
;
Phytoplankton
;
Trophic relationships
;
Trophodynamic cycle
;
Transformation
;
Food chains
;
Carnivores
;
Lagoons
;
Podon polyphemoides
;
Oithona nana
;
Sagitta
;
Sagitta inflate
;
Marine
Repository Name:
AquaDocs
Type:
Journal Contribution
,
Refereed
Format:
pp. 48-65
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