Spring phytoplankton communities of the Labrador Sea (2005-2014): pigment signatures, photophysiology and elemental ratios ...

• Main Authors: Fragoso, Glaucia M, Poulton, Alex J, Yashayaev, Igor M, Head, Erica J H, Purdie, Duncan A
• Format: Dataset
• Language: English
• Published: PANGAEA 2017
• Subjects: Campaign of event; Event label; Sample ID; Station label; Day of study; Date/Time of event; Latitude of event; Longitude of event; DEPTH, water; Salinity; Temperature, water; Mixed layer depth; Stratification index; Silicate; Phosphate; Nitrate; Silicate/Nitrate ratio; Nitrate/Phosphate ratio; Chlorophyll a; Phaeophytin; 19-Butanoyloxyfucoxanthin; 19-Hexanoyloxyfucoxanthin; Alloxanthin; alpha-Carotene, beta,epsilon-Carotene; beta-Carotene, beta,beta-Carotene; Chlorophyll b; Chlorophyll c1+c2; Chlorophyll c3; Chlorophyllide a; Diadinoxanthin + Diatoxanthin; Diadinoxanthin; Diatoxanthin; Fucoxanthin; Peridinin; Prasinoxanthin; Chlorophyll c; Violaxanthin; Zeaxanthin + Lutein; Chlorophyll a, total; Carotenoid pigments; Pigments, total accessory; Pigments, total; Carbon, organic, particulate; Nitrogen, organic, particulate; Carbon, organic, particulate/Nitrogen, organic, particulate ratio; Diadinoxanthin + Diatoxanthin/chlorophyll a ratio; Diatoxanthin/Diadinoxanthin + Diatoxanthin ratio; Comment; Chlorophyll a, Prasinophyta; Chlorophyll a, Chlorophyta; Arctic; Greenland; Labrador Sea; Phytoplankton
• Online Access: https://dx.doi.org/10.1594/pangaea.871872; https://doi.pangaea.de/10.1594/PANGAEA.871872

The Labrador Sea is an ideal region to study the biogeographical, physiological and biogeochemical implications of phytoplankton communities due to sharp transitions of distinct water masses across its shelves and the central basin, intense nutrient delivery due to deep vertical mixing during winters and continual inflow of Arctic, Greenland melt and Atlantic waters. In this study, we provide a decadal assessment (2005?2014) of late spring/early summer phytoplankton communities from surface waters of the Labrador Sea based on pigment markers and CHEMTAX analysis, and their physiological and biogeochemical signatures. Diatoms were the most abundant group, blooming first in shallow mixed layers of haline-stratified Arctic shelf waters. Along with diatoms, chlorophytes co-dominated at the western end of the section (particularly in the polar waters of the Labrador Current (LC)), whilst Phaeocystis co-dominated in the east (modified polar waters of the West Greenland Current (WGC)). Pre-bloom conditions occurred ... : Supplement to: Fragoso, Glaucia M; Poulton, Alex J; Yashayaev, Igor M; Head, Erica J H; Purdie, Duncan A (2016): Spring phytoplankton communities of the Labrador Sea (2005-2014): pigment signatures, photophysiology and elemental ratios. Biogeosciences Discussions, 43 pp ...