Seasonal succession of zooplankton in coastal waters of the Argentine Sea (Southwest Atlantic Ocean): Prevalence of classical or microbial food webs

The demographic characteristics of marine zooplankton make it especially suitable for examining the variability of marine ecosystems. The zooplankton annual succession was studied at a permanent coastal station in the Argentine Sea (38°28′S, 57°41′W) in relation to physical conditions and phytoplank...

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Autores principales: Viñas, M.D., Negri, R.M., Cepeda, G.D., Hernández, D., Silva, R., Daponte, M.C., Capitanio, F.L.
Formato: JOUR
Lenguaje:English
Materias:
Argentine Sea
EPEA station
larvaceans
mesozooplankton succession
phytoplankton fractions
small copepods
Southwest Atlantic Ocean
biomass
chlorophyll a
coastal water
community composition
crustacean
dominance
filter feeder
food web
growth rate
marine ecosystem
phytoplankton
picoplankton
succession
survival
zooplankton
Atlantic Ocean
Atlantic Ocean (Southwest)
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_17451000_v9_n4_p371_Vinas
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_17451000_v9_n4_p371_Vinas
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spelling todo:paper_17451000_v9_n4_p371_Vinas2023-10-03T16:31:55Z Seasonal succession of zooplankton in coastal waters of the Argentine Sea (Southwest Atlantic Ocean): Prevalence of classical or microbial food webs Viñas, M.D. Negri, R.M. Cepeda, G.D. Hernández, D. Silva, R. Daponte, M.C. Capitanio, F.L. Argentine Sea EPEA station larvaceans mesozooplankton succession phytoplankton fractions small copepods Southwest Atlantic Ocean biomass chlorophyll a coastal water community composition crustacean dominance filter feeder food web growth rate marine ecosystem phytoplankton picoplankton succession survival zooplankton Argentine Sea Atlantic Ocean Atlantic Ocean (Southwest) The demographic characteristics of marine zooplankton make it especially suitable for examining the variability of marine ecosystems. The zooplankton annual succession was studied at a permanent coastal station in the Argentine Sea (38°28′S, 57°41′W) in relation to physical conditions and phytoplankton size fractions. Small copepods (<1 mm total length), mainly represented by Oithona nana (Cyclopoida) and adults and copepodites of Calanoida, numerically dominated the metazooplankton throughout the year. In summer, small copepods also exceeded large copepods in biomass. Larvaceans (mostly <1 mm total length) were the second most important metazooplankton group, with strong dominance of Oikopleura dioica. The zooplankton succession exhibited two main periods throughout the year: (1) a cold winter-spring period characterized by a dominant classical herbivore food web in which the large copepod Calanoides carinatus and lamellibranch larvae were associated with the lowest temperatures and highest Chl-a and microphytoplankton, and (2) a warm summer period dominated by a microbial food web in which microbial filter-feeders such as Oithona nana, Paracalanus spp., Oikopleura dioica and Penilia avirostris predominated and the highest density of picophytoplankton and lowest concentrations of Chl-a were recorded. The implications of the present findings for the growth and survival of fish larvae distributed in the study area are discussed. © 2013 Copyright Taylor and Francis Group, LLC. Fil:Daponte, M.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Capitanio, F.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR English info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_17451000_v9_n4_p371_Vinas
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language English
orig_language_str_mv English
topic Argentine Sea
EPEA station
larvaceans
mesozooplankton succession
phytoplankton fractions
small copepods
Southwest Atlantic Ocean
biomass
chlorophyll a
coastal water
community composition
crustacean
dominance
filter feeder
food web
growth rate
marine ecosystem
phytoplankton
picoplankton
succession
survival
zooplankton
Argentine Sea
Atlantic Ocean
Atlantic Ocean (Southwest)
spellingShingle Argentine Sea
EPEA station
larvaceans
mesozooplankton succession
phytoplankton fractions
small copepods
Southwest Atlantic Ocean
biomass
chlorophyll a
coastal water
community composition
crustacean
dominance
filter feeder
food web
growth rate
marine ecosystem
phytoplankton
picoplankton
succession
survival
zooplankton
Argentine Sea
Atlantic Ocean
Atlantic Ocean (Southwest)
Viñas, M.D.
Negri, R.M.
Cepeda, G.D.
Hernández, D.
Silva, R.
Daponte, M.C.
Capitanio, F.L.
Seasonal succession of zooplankton in coastal waters of the Argentine Sea (Southwest Atlantic Ocean): Prevalence of classical or microbial food webs
topic_facet Argentine Sea
EPEA station
larvaceans
mesozooplankton succession
phytoplankton fractions
small copepods
Southwest Atlantic Ocean
biomass
chlorophyll a
coastal water
community composition
crustacean
dominance
filter feeder
food web
growth rate
marine ecosystem
phytoplankton
picoplankton
succession
survival
zooplankton
Argentine Sea
Atlantic Ocean
Atlantic Ocean (Southwest)
description The demographic characteristics of marine zooplankton make it especially suitable for examining the variability of marine ecosystems. The zooplankton annual succession was studied at a permanent coastal station in the Argentine Sea (38°28′S, 57°41′W) in relation to physical conditions and phytoplankton size fractions. Small copepods (<1 mm total length), mainly represented by Oithona nana (Cyclopoida) and adults and copepodites of Calanoida, numerically dominated the metazooplankton throughout the year. In summer, small copepods also exceeded large copepods in biomass. Larvaceans (mostly <1 mm total length) were the second most important metazooplankton group, with strong dominance of Oikopleura dioica. The zooplankton succession exhibited two main periods throughout the year: (1) a cold winter-spring period characterized by a dominant classical herbivore food web in which the large copepod Calanoides carinatus and lamellibranch larvae were associated with the lowest temperatures and highest Chl-a and microphytoplankton, and (2) a warm summer period dominated by a microbial food web in which microbial filter-feeders such as Oithona nana, Paracalanus spp., Oikopleura dioica and Penilia avirostris predominated and the highest density of picophytoplankton and lowest concentrations of Chl-a were recorded. The implications of the present findings for the growth and survival of fish larvae distributed in the study area are discussed. © 2013 Copyright Taylor and Francis Group, LLC.
format JOUR
author Viñas, M.D.
Negri, R.M.
Cepeda, G.D.
Hernández, D.
Silva, R.
Daponte, M.C.
Capitanio, F.L.
author_facet Viñas, M.D.
Negri, R.M.
Cepeda, G.D.
Hernández, D.
Silva, R.
Daponte, M.C.
Capitanio, F.L.
author_sort Viñas, M.D.
title Seasonal succession of zooplankton in coastal waters of the Argentine Sea (Southwest Atlantic Ocean): Prevalence of classical or microbial food webs
title_short Seasonal succession of zooplankton in coastal waters of the Argentine Sea (Southwest Atlantic Ocean): Prevalence of classical or microbial food webs
title_full Seasonal succession of zooplankton in coastal waters of the Argentine Sea (Southwest Atlantic Ocean): Prevalence of classical or microbial food webs
title_fullStr Seasonal succession of zooplankton in coastal waters of the Argentine Sea (Southwest Atlantic Ocean): Prevalence of classical or microbial food webs
title_full_unstemmed Seasonal succession of zooplankton in coastal waters of the Argentine Sea (Southwest Atlantic Ocean): Prevalence of classical or microbial food webs
title_sort seasonal succession of zooplankton in coastal waters of the argentine sea (southwest atlantic ocean): prevalence of classical or microbial food webs
url http://hdl.handle.net/20.500.12110/paper_17451000_v9_n4_p371_Vinas
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