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Disentangling top-down drivers of mortality underlying diel population dynamics of Prochlorococcus in the North Pacific Subtropical Gyre.
Beckett, Stephen J; Demory, David; Coenen, Ashley R; Casey, John R; Dugenne, Mathilde; Follett, Christopher L; Connell, Paige; Carlson, Michael C G; Hu, Sarah K; Wilson, Samuel T; Muratore, Daniel; Rodriguez-Gonzalez, Rogelio A; Peng, Shengyun; Becker, Kevin W; Mende, Daniel R; Armbrust, E Virginia; Caron, David A; Lindell, Debbie; White, Angelicque E; Ribalet, François; Weitz, Joshua S.
Afiliación
  • Beckett SJ; School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, USA. beckett@umd.edu.
  • Demory D; Department of Biology, University of Maryland, College Park, MD, USA. beckett@umd.edu.
  • Coenen AR; School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, USA. david.demory@obs-banyuls.fr.
  • Casey JR; Sorbonne Université, CNRS, USR 3579, Laboratoire de Biodiversité et Biotechnologies Microbiennes (LBBM), Observatoire Océanologique, Banyuls-sur-Mer, France. david.demory@obs-banyuls.fr.
  • Dugenne M; School of Physics, Georgia Institute of Technology, Atlanta, GA, USA.
  • Follett CL; Daniel K. Inouye Center for Microbial Oceanography: Research and Education, University of Hawai'i at Manoa, Honolulu, HI, USA.
  • Connell P; Department of Oceanography, University of Hawai'i at Manoa, Honolulu, HI, USA.
  • Carlson MCG; Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA.
  • Hu SK; Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, USA.
  • Wilson ST; Daniel K. Inouye Center for Microbial Oceanography: Research and Education, University of Hawai'i at Manoa, Honolulu, HI, USA.
  • Muratore D; Department of Oceanography, University of Hawai'i at Manoa, Honolulu, HI, USA.
  • Rodriguez-Gonzalez RA; Sorbonne Université, CNRS, UMR 7093, Laboratoire d'Océanographie de Villefranche-sur-Mer (LOV), Villefranche-sur-Mer, France.
  • Peng S; Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA.
  • Becker KW; Department of Earth, Ocean and Ecological Sciences, University of Liverpool, Liverpool, UK.
  • Mende DR; Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA.
  • Armbrust EV; Biology Department, San Diego Mesa College, San Diego, CA, USA.
  • Caron DA; Faculty of Biology, Technion - Israel Institute of Technology, Haifa, Israel.
  • Lindell D; Department of Biological Sciences, California State University, Long Beach, CA, USA.
  • White AE; Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA.
  • Ribalet F; Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, USA.
  • Weitz JS; Department of Oceanography, Texas A&M University, College Station, TX, USA.
Nat Commun ; 15(1): 2105, 2024 Mar 07.
Article en En | MEDLINE | ID: mdl-38453897
ABSTRACT
Photosynthesis fuels primary production at the base of marine food webs. Yet, in many surface ocean ecosystems, diel-driven primary production is tightly coupled to daily loss. This tight coupling raises the question which top-down drivers predominate in maintaining persistently stable picocyanobacterial populations over longer time scales? Motivated by high-frequency surface water measurements taken in the North Pacific Subtropical Gyre (NPSG), we developed multitrophic models to investigate bottom-up and top-down mechanisms underlying the balanced control of Prochlorococcus populations. We find that incorporating photosynthetic growth with viral- and predator-induced mortality is sufficient to recapitulate daily oscillations of Prochlorococcus abundances with baseline community abundances. In doing so, we infer that grazers in this environment function as the predominant top-down factor despite high standing viral particle densities. The model-data fits also reveal the ecological relevance of light-dependent viral traits and non-canonical factors to cellular loss. Finally, we leverage sensitivity analyses to demonstrate how variation in life history traits across distinct oceanic contexts, including variation in viral adsorption and grazer clearance rates, can transform the quantitative and even qualitative importance of top-down controls in shaping Prochlorococcus population dynamics.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ecosistema / Prochlorococcus Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ecosistema / Prochlorococcus Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido