Mesoscale Eddies Drive Increased Silica Export in the Subtropical Pacific Ocean

+ See all authors and affiliations

Science  18 May 2007:
Vol. 316, Issue 5827, pp. 1017-1021
DOI: 10.1126/science.1136221

You are currently viewing the abstract.

View Full Text


Mesoscale eddies may play a critical role in ocean biogeochemistry by increasing nutrient supply, primary production, and efficiency of the biological pump, that is, the ratio of carbon export to primary production in otherwise nutrient-deficient waters. We examined a diatom bloom within a cold-core cyclonic eddy off Hawai`i. Eddy primary production, community biomass, and size composition were markedly enhanced but had little effect on the carbon export ratio. Instead, the system functioned as a selective silica pump. Strong trophic coupling and inefficient organic export may be general characteristics of community perturbation responses in the warm waters of the Pacific Ocean.

View Full Text

Related Content