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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/235582
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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 Técnicas2025-09-29T10:03:31Zoai: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:34982025-09-29 10:03:31.939CONICET 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 |
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1844613852385247232 |
score |
13.070432 |