Dataset.

Mixoplankton interferences in dilution grazing experiments [Dataset]

Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/257589
Digital.CSIC. Repositorio Institucional del CSIC
  • Duarte Ferreira, Guilherme
  • Romano, Filomena
  • Medić, Nikola
  • Pitta, Paraskevi
  • Hansen, Per Juel
  • Flynn, Kevin J.
  • Mitra, Aditee
  • Calbet, Albert
It remains unclear as to how mixoplankton (coupled phototrophy and phagotrophy in one cell) affects the estimation of grazing rates obtained from the widely used dilution grazing technique. To address this issue, we prepared laboratory-controlled dilution experiments with known mixtures of phyto-, protozoo-, and mixoplankton, operated under different light regimes and species combinations. Our results evidenced that chlorophyll is an inadequate proxy for phytoplankton when mixoplankton are present. Conversely, species-specific cellular counts could assist (although not fully solve) in the integration of mixoplanktonic activity in a dilution experiment. Moreover, cell counts can expose prey selectivity patterns and intraguild interactions among grazers. Our results also demonstrated that whole community approaches mimic reality better than single-species laboratory experiments. We also confirmed that light is required for protozoo- and mixoplankton to correctly express their feeding activity, and that overall diurnal grazing is higher than nocturnal. Thus, we recommend that a detailed examination of initial and final plankton communities should become routine in dilution experiments, and that incubations should preferably be started at the beginning of both day and night periods. Finally, we hypothesize that in silico approaches may help disentangle the contribution of mixoplankton to the community grazing of a given system, Marie Skłodowska-Curie grant agreement No 766327. [...] With funding from the Spanish government through the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S)
 

DOI: http://hdl.handle.net/10261/257589
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/257589

HANDLE: http://hdl.handle.net/10261/257589
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/257589
 
Ver en: http://hdl.handle.net/10261/257589
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/257589

Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/258522
Artículo científico (article). 2021

MIXOPLANKTON INTERFERENCES IN DILUTION GRAZING EXPERIMENTS

Digital.CSIC. Repositorio Institucional del CSIC
  • Duarte Ferreira, Guilherme
  • Romano, Filomena
  • Medić, Nikola
  • Pitta, Paraskevi
  • Hansen, Per Juel
  • Flynn, Kevin J.
  • Mitra, Aditee
  • Calbet, Albert
16 pages, 7 figures, 3 tables, supplementary information https://doi.org/10.1038/s41598-021-03176-0.-- Dataser Digital.CSIC https://doi.org/10.20350/digitalCSIC/14484.-- This project is a contribution of the Marine Zooplankton Ecology Group from the Generalitat de Catalunya (2017 SGR 87), It remains unclear as to how mixoplankton (coupled phototrophy and phagotrophy in one cell) affects the estimation of grazing rates obtained from the widely used dilution grazing technique. To address this issue, we prepared laboratory-controlled dilution experiments with known mixtures of phyto-, protozoo-, and mixoplankton, operated under different light regimes and species combinations. Our results evidenced that chlorophyll is an inadequate proxy for phytoplankton when mixoplankton are present. Conversely, species-specific cellular counts could assist (although not fully solve) in the integration of mixoplanktonic activity in a dilution experiment. Moreover, cell counts can expose prey selectivity patterns and intraguild interactions among grazers. Our results also demonstrated that whole community approaches mimic reality better than single-species laboratory experiments. We also confirmed that light is required for protozoo- and mixoplankton to correctly express their feeding activity, and that overall diurnal grazing is higher than nocturnal. Thus, we recommend that a detailed examination of initial and final plankton communities should become routine in dilution experiments, and that incubations should preferably be started at the beginning of both day and night periods. Finally, we hypothesize that in silico approaches may help disentangle the contribution of mixoplankton to the community grazing of a given system, his project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant agreement No. 766327. [...] With the institutional support of the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S), Peer reviewed

Proyecto: EC/H2020/766327



Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/257589
Dataset. 2021

MIXOPLANKTON INTERFERENCES IN DILUTION GRAZING EXPERIMENTS [DATASET]

Digital.CSIC. Repositorio Institucional del CSIC
  • Duarte Ferreira, Guilherme
  • Romano, Filomena
  • Medić, Nikola
  • Pitta, Paraskevi
  • Hansen, Per Juel
  • Flynn, Kevin J.
  • Mitra, Aditee
  • Calbet, Albert
It remains unclear as to how mixoplankton (coupled phototrophy and phagotrophy in one cell) affects the estimation of grazing rates obtained from the widely used dilution grazing technique. To address this issue, we prepared laboratory-controlled dilution experiments with known mixtures of phyto-, protozoo-, and mixoplankton, operated under different light regimes and species combinations. Our results evidenced that chlorophyll is an inadequate proxy for phytoplankton when mixoplankton are present. Conversely, species-specific cellular counts could assist (although not fully solve) in the integration of mixoplanktonic activity in a dilution experiment. Moreover, cell counts can expose prey selectivity patterns and intraguild interactions among grazers. Our results also demonstrated that whole community approaches mimic reality better than single-species laboratory experiments. We also confirmed that light is required for protozoo- and mixoplankton to correctly express their feeding activity, and that overall diurnal grazing is higher than nocturnal. Thus, we recommend that a detailed examination of initial and final plankton communities should become routine in dilution experiments, and that incubations should preferably be started at the beginning of both day and night periods. Finally, we hypothesize that in silico approaches may help disentangle the contribution of mixoplankton to the community grazing of a given system, Marie Skłodowska-Curie grant agreement No 766327. [...] With funding from the Spanish government through the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S)

Proyecto: EC/H2020/766327



1106