Interannual biomass changes and life strategies of Subantarctic zooplankton in the Kerguelen ecosystem: an overview of the consequences in energy transfer to higher trophic levels ...
The zooplankton communities of the Kerguelen ecosystem can be divided into the inshore, Morbihan Gulf and the shelf systems. Plankton in the Gulf displayed a high biomass and a strong seasonality with winter lows and spring and summer highs. On the shelf, the seasonality is similar but with lower le...
| Main Authors: | , , |
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| Format: | Article in Journal/Newspaper |
| Language: | unknown |
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Cybium
2011
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.26028/cybium/2011-35sp-007 http://sfi-cybium.fr/fr/interannual-biomass-changes-and-life-strategies-subantarctic-zooplankton-kerguelen-ecosystem |
| Summary: | The zooplankton communities of the Kerguelen ecosystem can be divided into the inshore, Morbihan Gulf and the shelf systems. Plankton in the Gulf displayed a high biomass and a strong seasonality with winter lows and spring and summer highs. On the shelf, the seasonality is similar but with lower levels of biomass. Zooplankton diversity is very low in the Gulf and showed an increase in species number towards oceanic waters. Energy transfer through the trophic food web was considered for the inshore system and seasonality in lipid accumulation is one of the major processes regulating the lipid availability. The main copepod, Drepanopus pectinatus (Brady, 1883), transforms low energy phytoplankton into high energy prey, showed high biomass and high lipid accumulation in the form of wax esters in spring and summer associated with 18:4 and 20:5 n-3 PUFA. A similar trend is observed for the copepod Paraeuchaeta antarctica (Giesbrecht, 1902) but because it reproduces in winter, it represents an important source of ... |
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