Assemblages of pelagic thaliaceans in oceanographic features at the tropical-temperate transition zone of a western boundary current.

Autor:	Pitt KA; School of Environment and Science, Coastal and Marine Research Centre, Australian Rivers Institute, Gold Coast Campus, Griffith University, Southport, QLD 4222, Australia., Lawley JW; School of Environment and Science, Coastal and Marine Research Centre, Australian Rivers Institute, Gold Coast Campus, Griffith University, Southport, QLD 4222, Australia., Hinchliffe C; School of Biological, Earth, and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia., Matis PA; School of Biological, Earth, and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia.; Sydney Institute of Marine Science, Chowder Bay Road, Mosman, NSW 2088, Australia., OlguÍn-Jacobson C; School of Environment and Science, Coastal and Marine Research Centre, Australian Rivers Institute, Gold Coast Campus, Griffith University, Southport, QLD 4222, Australia.; Hopkins Marine Station, Stanford Doerr School of Sustainability, Stanford University, Pacific Grove, Stanford, CA 94305, USA., Arafeh-Dalmau N; Hopkins Marine Station, Stanford Doerr School of Sustainability, Stanford University, Pacific Grove, Stanford, CA 94305, USA.; Centre for Biodiversity and Conservation Science, School of Biological Sciences, The University of Queensland, St Lucia, QLD 4072, Australia.; Department of Geography, University of California Los Angeles, Los Angeles, CA 90095, USA., Lindholm P; School of Environment and Science, Coastal and Marine Research Centre, Australian Rivers Institute, Gold Coast Campus, Griffith University, Southport, QLD 4222, Australia., Arnold J; School of Environment and Science, Coastal and Marine Research Centre, Australian Rivers Institute, Gold Coast Campus, Griffith University, Southport, QLD 4222, Australia., Suthers IM; School of Biological, Earth, and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia.; Sydney Institute of Marine Science, Chowder Bay Road, Mosman, NSW 2088, Australia.
Jazyk:	angličtina
Zdroj:	Journal of plankton research [J Plankton Res] 2023 Jun 02; Vol. 45 (4), pp. 677-692. Date of Electronic Publication: 2023 Jun 02 (Print Publication: 2023).
DOI:	10.1093/plankt/fbad024
Abstrakt:	Mesoscale oceanographic features influence the composition of zooplankton. Cyclonic eddies can promote upwelling and production of gelatinous zooplankton, which play critical roles in ocean biogeochemical cycling. We examined variation in assemblages of thaliaceans (salps, doliolids and pyrosomes) among mesoscale oceanographic features at the tropical-temperate boundary of the East Australian Current (EAC) in Spring 2019 and Autumn 2021. The influence of cyclonic eddies was examined in a large offshore cyclonic eddy in 2019 and a newly formed frontal eddy in 2021. Pyrosomes were most abundant in the offshore EAC jet, and salps and doliolids were most abundant in coastal features, including within eddies that were transported offshore. In 2019, Salpa fusiformis increased 4-fold over 8 days in the large cyclonic eddy, and in 2021, doliolids increased > 50-fold over 2 weeks in a chlorophyll-rich coastal eddy while abundances of other thaliaceans remained unchanged or decreased. Correlations between abundances of thaliaceans and chlorophyll-a concentrations across the 102 samples collected during both voyages revealed that doliolids occupy a wider range of chlorophyll-a concentrations than salps. Our observations indicate that doliolids thrive in productive shelf environments, salps occur in less productive shelf waters and pyrosomes are most abundant in oligotrophic waters of the south Coral Sea. (© The Author(s) 2023. Published by Oxford University Press.)
Databáze:	MEDLINE
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