English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

16 pages, 6 figures, 5 tables.Fluxes of particulate pelagic material were measured in the Pontevedra Ría (northwest\udSpain) using sediment traps moored at the base of the photic zone, deployed for 24 h periods from\udFebruary to June 1998. Measurements of water column hydrography, chlorophyll, primary production\udand phytoplankton were taken. Samples were divided into low, moderate and high productivity\udperiods, according to phytoplankton biomass. The vertical flux of carbon ranged from 530 to 1780 mg\udC m–2 d–1. Minimum values were recorded during high productivity periods, and were related to offshore\udadvection of surface water. The daily export of carbon accounted for 75% of primary production.\udThe contribution of phytoplankton to the sedimented carbon ranged from 18 to 66%, and the\udfraction corresponding to living phytoplankton from 5 to 25%. The dominance of phytoplanktonic\udover phytobenthic species, and the low C:N ratio, indicated a pelagic origin and a rapid sinking of the\udparticles. Diatoms were predominant; however, microflagellates accounted for ca. 20% and dinoflagellates\udfor 13% of the total biomass, suggesting the rapid formation of aggregates, increasing\udthe sinking speed of individual cells. A decrease in sedimentation was observed from the inner to the\udouter ria, and from low to higher productivity periods. However, no differences were found among\udstations and periods. The flux of particulate carbon was similar in intensity throughout the ria in all\udperiods. Sedimentation is influenced by hydrography, showing a negative relationship with water\udflux. Balance between advection and retention processes in the ria play an important role in the\udcoupling between biomass stock in water and deposition of material in traps.This work was supported by the\udComisión Interministerial de Ciencia y Tecnología, under the\udproject ‘Hydrodynamic and silicon cycle in the Ría Pontevedra’,\udref. MAR96-1782, and partially funded by the project\ud‘Hydrodynamic and hydrochemistry of the integrated system\udAnllóns River—Laxe Ría: seasonal conditions and response\udto high flow events’, of the Spanish CICYT under contract\udnumber HID99-0699.Peer reviewe

Vertical biogenic particle flux in a western Galician ria (NW Iberian Peninsula)