Disentangling the role of light and nutrient limitation on bacterivory by mixotrophic nanoflagellates

Autores
DeVaul Princiotta, Sarah; VanKuren, Andrew; Williamson, Craig E.; Sanders, Robert W.; Valiñas, Macarena Soledad
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Many phytoplankton taxa function on multiple trophic levels by combining photosynthesis and ingestion of bacteria, termed mixotrophy. Despite the recognition of mixotrophy as a universal functional trait, we have yet to fully resolve how environmental conditions influence community grazing rates in situ. A microcosm study was used to assess bacterivory by mixotrophic nanoflagellates following nutrient enrichment and light attenuation in a temperate lake. We found contrasting results based on assessment of mixotroph abundance or bacterivory. Despite an interactive effect of nutrient enrichment and light attenuation on mixotroph abundance, significant differences within light treatments were observed only after enrichment with P or N+P. The greatest abundance of mixotrophs across treatments occurred under co-nutrient enrichment with full exposure to irradiance. However, bacterivory by mixotrophic nanoflagellates was greatest under shaded conditions after either N or P enrichment. We suggest that PAR availability dampened the stimulatory effect of nutrient limitation, and bacterivory supplemented a suboptimal photosynthetic environment. In a saturating light regime, the mixotrophic community was less driven to ingest bacteria because photosynthesis was able to satisfy energetic demands. These findings quantify community bacterivory in response to environmental drivers that may characterize future ecosystem conditions and highlight the importance of considering grazing rates in conjunction with abundance of mixotrophic protists.
Fil: DeVaul Princiotta, Sarah. University of Pennsylvania; Estados Unidos
Fil: VanKuren, Andrew. Temple University; Estados Unidos
Fil: Williamson, Craig E.. Miami University; Estados Unidos
Fil: Sanders, Robert W.. Temple University; Estados Unidos
Fil: Valiñas, Macarena Soledad. Fundación Playa Unión. Estación de Fotobiología Playa Unión; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
BACTERIVORY
FRESHWATER
MIXOPLANKTON
MIXOTROPHY
NANOFLAGELLATE
PLANKTON
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/235582
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Disentangling the role of light and nutrient limitation on bacterivory by mixotrophic nanoflagellatesDeVaul Princiotta, SarahVanKuren, AndrewWilliamson, Craig E.Sanders, Robert W.Valiñas, Macarena SoledadBACTERIVORYFRESHWATERMIXOPLANKTONMIXOTROPHYNANOFLAGELLATEPLANKTONhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Many phytoplankton taxa function on multiple trophic levels by combining photosynthesis and ingestion of bacteria, termed mixotrophy. Despite the recognition of mixotrophy as a universal functional trait, we have yet to fully resolve how environmental conditions influence community grazing rates in situ. A microcosm study was used to assess bacterivory by mixotrophic nanoflagellates following nutrient enrichment and light attenuation in a temperate lake. We found contrasting results based on assessment of mixotroph abundance or bacterivory. Despite an interactive effect of nutrient enrichment and light attenuation on mixotroph abundance, significant differences within light treatments were observed only after enrichment with P or N+P. The greatest abundance of mixotrophs across treatments occurred under co-nutrient enrichment with full exposure to irradiance. However, bacterivory by mixotrophic nanoflagellates was greatest under shaded conditions after either N or P enrichment. We suggest that PAR availability dampened the stimulatory effect of nutrient limitation, and bacterivory supplemented a suboptimal photosynthetic environment. In a saturating light regime, the mixotrophic community was less driven to ingest bacteria because photosynthesis was able to satisfy energetic demands. These findings quantify community bacterivory in response to environmental drivers that may characterize future ecosystem conditions and highlight the importance of considering grazing rates in conjunction with abundance of mixotrophic protists.Fil: DeVaul Princiotta, Sarah. University of Pennsylvania; Estados UnidosFil: VanKuren, Andrew. Temple University; Estados UnidosFil: Williamson, Craig E.. Miami University; Estados UnidosFil: Sanders, Robert W.. Temple University; Estados UnidosFil: Valiñas, Macarena Soledad. Fundación Playa Unión. Estación de Fotobiología Playa Unión; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaJohn Wiley & Sons2023-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/235582DeVaul Princiotta, Sarah; VanKuren, Andrew; Williamson, Craig E.; Sanders, Robert W.; Valiñas, Macarena Soledad; Disentangling the role of light and nutrient limitation on bacterivory by mixotrophic nanoflagellates; John Wiley & Sons; Journal of Phycology; 59; 4; 5-2023; 785-7901529-8817CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/jpy.13358info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:33:17Zoai:ri.conicet.gov.ar:11336/235582instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:33:17.989CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Disentangling the role of light and nutrient limitation on bacterivory by mixotrophic nanoflagellates
title Disentangling the role of light and nutrient limitation on bacterivory by mixotrophic nanoflagellates
spellingShingle Disentangling the role of light and nutrient limitation on bacterivory by mixotrophic nanoflagellates
DeVaul Princiotta, Sarah
BACTERIVORY
FRESHWATER
MIXOPLANKTON
MIXOTROPHY
NANOFLAGELLATE
PLANKTON
title_short Disentangling the role of light and nutrient limitation on bacterivory by mixotrophic nanoflagellates
title_full Disentangling the role of light and nutrient limitation on bacterivory by mixotrophic nanoflagellates
title_fullStr Disentangling the role of light and nutrient limitation on bacterivory by mixotrophic nanoflagellates
title_full_unstemmed Disentangling the role of light and nutrient limitation on bacterivory by mixotrophic nanoflagellates
title_sort Disentangling the role of light and nutrient limitation on bacterivory by mixotrophic nanoflagellates
dc.creator.none.fl_str_mv DeVaul Princiotta, Sarah
VanKuren, Andrew
Williamson, Craig E.
Sanders, Robert W.
Valiñas, Macarena Soledad
author DeVaul Princiotta, Sarah
author_facet DeVaul Princiotta, Sarah
VanKuren, Andrew
Williamson, Craig E.
Sanders, Robert W.
Valiñas, Macarena Soledad
author_role author
author2 VanKuren, Andrew
Williamson, Craig E.
Sanders, Robert W.
Valiñas, Macarena Soledad
author2_role author
author
author
author
dc.subject.none.fl_str_mv BACTERIVORY
FRESHWATER
MIXOPLANKTON
MIXOTROPHY
NANOFLAGELLATE
PLANKTON
topic BACTERIVORY
FRESHWATER
MIXOPLANKTON
MIXOTROPHY
NANOFLAGELLATE
PLANKTON
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Many phytoplankton taxa function on multiple trophic levels by combining photosynthesis and ingestion of bacteria, termed mixotrophy. Despite the recognition of mixotrophy as a universal functional trait, we have yet to fully resolve how environmental conditions influence community grazing rates in situ. A microcosm study was used to assess bacterivory by mixotrophic nanoflagellates following nutrient enrichment and light attenuation in a temperate lake. We found contrasting results based on assessment of mixotroph abundance or bacterivory. Despite an interactive effect of nutrient enrichment and light attenuation on mixotroph abundance, significant differences within light treatments were observed only after enrichment with P or N+P. The greatest abundance of mixotrophs across treatments occurred under co-nutrient enrichment with full exposure to irradiance. However, bacterivory by mixotrophic nanoflagellates was greatest under shaded conditions after either N or P enrichment. We suggest that PAR availability dampened the stimulatory effect of nutrient limitation, and bacterivory supplemented a suboptimal photosynthetic environment. In a saturating light regime, the mixotrophic community was less driven to ingest bacteria because photosynthesis was able to satisfy energetic demands. These findings quantify community bacterivory in response to environmental drivers that may characterize future ecosystem conditions and highlight the importance of considering grazing rates in conjunction with abundance of mixotrophic protists.
Fil: DeVaul Princiotta, Sarah. University of Pennsylvania; Estados Unidos
Fil: VanKuren, Andrew. Temple University; Estados Unidos
Fil: Williamson, Craig E.. Miami University; Estados Unidos
Fil: Sanders, Robert W.. Temple University; Estados Unidos
Fil: Valiñas, Macarena Soledad. Fundación Playa Unión. Estación de Fotobiología Playa Unión; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Many phytoplankton taxa function on multiple trophic levels by combining photosynthesis and ingestion of bacteria, termed mixotrophy. Despite the recognition of mixotrophy as a universal functional trait, we have yet to fully resolve how environmental conditions influence community grazing rates in situ. A microcosm study was used to assess bacterivory by mixotrophic nanoflagellates following nutrient enrichment and light attenuation in a temperate lake. We found contrasting results based on assessment of mixotroph abundance or bacterivory. Despite an interactive effect of nutrient enrichment and light attenuation on mixotroph abundance, significant differences within light treatments were observed only after enrichment with P or N+P. The greatest abundance of mixotrophs across treatments occurred under co-nutrient enrichment with full exposure to irradiance. However, bacterivory by mixotrophic nanoflagellates was greatest under shaded conditions after either N or P enrichment. We suggest that PAR availability dampened the stimulatory effect of nutrient limitation, and bacterivory supplemented a suboptimal photosynthetic environment. In a saturating light regime, the mixotrophic community was less driven to ingest bacteria because photosynthesis was able to satisfy energetic demands. These findings quantify community bacterivory in response to environmental drivers that may characterize future ecosystem conditions and highlight the importance of considering grazing rates in conjunction with abundance of mixotrophic protists.
publishDate 2023
dc.date.none.fl_str_mv 2023-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/235582
DeVaul Princiotta, Sarah; VanKuren, Andrew; Williamson, Craig E.; Sanders, Robert W.; Valiñas, Macarena Soledad; Disentangling the role of light and nutrient limitation on bacterivory by mixotrophic nanoflagellates; John Wiley & Sons; Journal of Phycology; 59; 4; 5-2023; 785-790
1529-8817
CONICET Digital
CONICET
url http://hdl.handle.net/11336/235582
identifier_str_mv DeVaul Princiotta, Sarah; VanKuren, Andrew; Williamson, Craig E.; Sanders, Robert W.; Valiñas, Macarena Soledad; Disentangling the role of light and nutrient limitation on bacterivory by mixotrophic nanoflagellates; John Wiley & Sons; Journal of Phycology; 59; 4; 5-2023; 785-790
1529-8817
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1111/jpy.13358
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv John Wiley & Sons
publisher.none.fl_str_mv John Wiley & Sons
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846781948839591936
score 13.179806

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