nerc.ac.uk

Phenological characteristics of global coccolithophore blooms

Hopkins, Jason; Henson, Stephanie A.; Painter, Stuart C.; Tyrrell, Toby; Poulton, Alex J.. 2015 Phenological characteristics of global coccolithophore blooms. Global Biogeochemical Cycles, 29 (2). 239-253. https://doi.org/10.1002/2014GB004919

Before downloading, please read NORA policies.
[img]
Preview
Text
gbc20248_Hopkins.pdf - Published Version

Download (2MB) | Preview

Abstract/Summary

Coccolithophores are recognized as having a significant influence on the global carbon cycle through the production and export of calcium carbonate (often referred to as particulate inorganic carbon or PIC). Using remotely sensed PIC and chlorophyll data, we investigate the seasonal dynamics of coccolithophores relative to a mixed phytoplankton community. Seasonal variability in PIC, here considered to indicate changes in coccolithophore biomass, is identified across much of the global ocean. Blooms, which typically start in February–March in the low-latitude (~30°) Northern Hemisphere and last for ~6–7 months, get progressively later (April–May) and shorter (3–4 months) moving poleward. A similar pattern is observed in the Southern Hemisphere, where blooms that generally begin around August–September in the lower latitudes and which last for ~8 months get later and shorter with increasing latitude. It has previously been considered that phytoplankton blooms consist of a sequential succession of blooms of individual phytoplankton types. Comparison of PIC and chlorophyll peak dates suggests instead that in many open ocean regions, blooms of coccolithophores and other phytoplankton can co-occur, conflicting with the traditional view of species succession that is thought to take place in temperate regions such as the North Atlantic.

Item Type: Publication - Article
Digital Object Identifier (DOI): https://doi.org/10.1002/2014GB004919
ISSN: 08866236
Additional Keywords: bloom; coccolithophore; phenology; remote sensing; particulate inorganic carbon; succession
NORA Subject Terms: Marine Sciences
Date made live: 03 Mar 2015 16:58 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/509962

Actions (login required)

View Item View Item

Document Downloads

Downloads for past 30 days

Downloads per month over past year

More statistics for this item...