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Small copepods matter: Population dynamics of Microsetella norvegica in a high-latitude coastal ecosystem

Permanent lenke
https://hdl.handle.net/10037/14438
DOI
https://doi.org/10.1093/plankt/fby019
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article.pdf (1.710Mb)
Accepted manuscript version (PDF)
Dato
2018-06-04
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Forfatter
Svensen, Camilla; Antonsen, Maria Terese; Reigstad, Marit
Sammendrag
We investigated the population dynamics of a small and little-studied harpacticoid copepod, Microsetella norvegica, in a sub-Arctic Norwegian fjord (Balsfjord 69°N). We sampled with a 90 μm mesh WP-2 net and a 20 L Go-Flo bottle and found that the WP-2 under-sampled all juvenile stages. The abundance and biomass were high, peaking in June with 9349 × 10-3 ind. m−2 and 1678 mg C m−2. Microsetellawere most abundant in the surface, but females and males demonstrated a distinct migration to below 50 m from October to March. Consistently, individual female body carbon content was highest in October (0.39 μg C ind−1) and lowest in March (0.18 μg C ind−1). Males were present throughout the year, and females with eggs were found from April to September. The average clutch size was 11 ± 2 eggs female−1, and our study supports the observation that females can release their egg sac before the eggs have hatched, possibly to produce a new one. With its high abundance and biomass, a flexible reproductive strategy and specialized feeding preferences, M. norvegica is likely a key species in high-latitude coastal ecosystems.
Beskrivelse
This is a pre-copyedited, author-produced version of an article accepted for publication in Journal of Plankton Research following peer review. The version of record Svensen, C., Antonsen, M.T. & Reigstad, M. (2018). Small copepods matter: Population dynamics of Microsetella norvegica in a high-latitude coastal ecosystem. Journal of Plankton Research, 40(4), 446-457 is available online at: https://doi.org/10.1093/plankt/fby019.
Forlag
Oxford University Press (OUP)
Sitering
Svensen, C., Antonsen, M.T. & Reigstad, M. (2018). Small copepods matter: Population dynamics of Microsetella norvegica in a high-latitude coastal ecosystem. Journal of Plankton Research, 40(4), 446-457. https://doi.org/10.1093/plankt/fby019
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