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Distinct responses to warming within picoplankton communities across an environmental gradient.
Stevens, Bethany L F; Peacock, Emily E; Crockford, E Taylor; Shalapyonok, Alexi; Neubert, Michael G; Sosik, Heidi M.
Afiliación
  • Stevens BLF; Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA.
  • Peacock EE; Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
  • Crockford ET; Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, Santa Barbara, California, USA.
  • Shalapyonok A; Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA.
  • Neubert MG; Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA.
  • Sosik HM; Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA.
Glob Chang Biol ; 30(5): e17316, 2024 May.
Article en En | MEDLINE | ID: mdl-38767231
ABSTRACT
Picophytoplankton are a ubiquitous component of marine plankton communities and are expected to be favored by global increases in seawater temperature and stratification associated with climate change. Eukaryotic and prokaryotic picophytoplankton have distinct ecology, and global models predict that the two groups will respond differently to future climate scenarios. At a nearshore observatory on the Northeast US Shelf, however, decades of year-round monitoring have shown these two groups to be highly synchronized in their responses to environmental variability. To reconcile the differences between regional and global predictions for picophytoplankton dynamics, we here investigate the picophytoplankton community across the continental shelf gradient from the nearshore observatory to the continental slope. We analyze flow cytometry data from 22 research cruises, comparing the response of picoeukaryote and Synechococcus communities to environmental variability across time and space. We find that the mechanisms controlling picophytoplankton abundance differ across taxa, season, and distance from shore. Like the prokaryote, Synechococcus, picoeukaryote division rates are limited nearshore by low temperatures in winter and spring, and higher temperatures offshore lead to an earlier spring bloom. Unlike Synechococcus, picoeukaryote concentration in summer decreases dramatically in offshore surface waters and exhibits deeper subsurface maxima. The offshore picoeukaryote community appears to be nutrient limited in the summer and subject to much greater loss rates than Synechococcus. This work both produces and demonstrates the necessity of taxon- and site-specific knowledge for accurately predicting the responses of picophytoplankton to ongoing environmental change.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fitoplancton / Estaciones del Año / Cambio Climático / Synechococcus Idioma: En Revista: Glob Chang Biol 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: Fitoplancton / Estaciones del Año / Cambio Climático / Synechococcus Idioma: En Revista: Glob Chang Biol Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido