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- W2901719400 startingPage "28" @default.
- W2901719400 abstract "Ocean acidification has the potential to impact the ocean's biogeochemical cycles and food web dynamics, with phytoplankton in the distinctive position to profoundly influence both, as individual phytoplankton species play unique roles in energy flow and element cycling. Previous studies have focused on short-term exposure of monocultures to low pH, but do not reflect the competitive dynamics within natural phytoplankton communities. This study explores the use of experimental microcosms to expose phytoplankton assemblages to elevated pCO2 for an extended period of time. Phytoplankton communities were collected from two biogeochemically distinct Louisiana estuaries, Caillou Lake (CL) and Barataria Bay (BB), and cultured in lab for 16 weeks while bubbling CO2 enriched air corresponding to current (400 ppm) and future (1000 ppm) pCO2 levels. Results suggest that elevated pCO2 does not implicitly catalyze an increase in phytoplankton biomass (chlorophyll a). While pigment data showcased a parabolic trend and microscopic observations revealed a loss in species diversity within each major taxonomic class. By the end of the 16-week incubation, 10 out of the 12 cultures had a community structure analogous to that of the startup phytoplankton assemblage collected from the field. Natural phytoplankton assemblages exposed to elevated pCO2 experienced multiple transitional states over the course of a 16-week incubation, indicating that there is no deterministic successional pathway dictated by coastal acidification but community adaptation was observed." @default.
- W2901719400 created "2018-11-29" @default.
- W2901719400 creator A5010004767 @default.
- W2901719400 creator A5026042852 @default.
- W2901719400 creator A5040002071 @default.
- W2901719400 creator A5063664644 @default.
- W2901719400 date "2019-02-01" @default.
- W2901719400 modified "2023-09-23" @default.
- W2901719400 title "Impacts of elevated pCO2 on estuarine phytoplankton biomass and community structure in two biogeochemically distinct systems in Louisiana, USA" @default.
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- W2901719400 doi "https://doi.org/10.1016/j.jembe.2018.09.008" @default.
- W2901719400 hasPublicationYear "2019" @default.