Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/20421
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Effects of small-scale turbulence on lower trophic levels under different nutrient conditions

AuthorsIversen, K.; Primicerio, Raúl; Larsen, Aud; Egge, J.; Peters, Francesc CSIC ORCID ; Guadayol, Òscar CSIC ORCID; Jacobsen, Anita; Havskum, Harry; Marrasé, Cèlia CSIC ORCID
Issue Date26-Nov-2009
PublisherOxford University Press
CitationJournal of Plankton Research 32(2): 197-208(2010)
AbstractSmall-scale turbulence affects the pelagic food web and energy flow in marine systems and the impact is related to nutrient conditions and the assemblage of organisms present. We generated five levels of turbulence (2*10–9 to 1*10–4 W kg–1) in land-based mesocosms (volume 2.6 m3) with and without additional nutrients (31:16:1 Si:N:P µM) to asses the effect of small-scale turbulence on the lower part of the pelagic food web under different nutrient conditions. The ecological influence of nutrients and small-scale turbulence on lower trophic levels was quantified using multivariate statistics (RDA), where nutrients accounted for 31.8% of the observed biological variation, while 7.2% of the variation was explained by small-scale turbulence and its interaction with nutrients. Chlorophyll a, primary production rates, bacterial production rates and diatom and dinoflagellate abundance were positively correlated to turbulence, regardless of nutrient conditions. Abundance of autotrophic flagellates, total phytoplankton and bacteria were positively correlated to turbulence only when nutrients were added. Impact of small-scale turbulence was related to nutrient conditions, with implications for oligotrophic and eutrophic situations. The effect on community level was also different compared to single species level. Microbial processes drive biogeochemical cycles, and nutrient-controlled effects of small-scale turbulence on such processes are relevant to foresee altered carbon flow in marine systems.
Description12 pages, 4 figures, 1 table
Publisher version (URL)https://doi.org/10.1093/plankt/fbp113
URIhttp://hdl.handle.net/10261/20421
DOI10.1093/plankt/fbp113
ISSN0142-7873
E-ISSN1464-3774
Appears in Collections:(ICM) Artículos

Show full item record
Review this work

SCOPUSTM   
Citations

22
checked on May 16, 2022

WEB OF SCIENCETM
Citations

19
checked on May 6, 2022

Page view(s)

349
checked on May 23, 2022

Google ScholarTM

Check

Altmetric

Dimensions


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.