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Seasonal and inter-annual variation of mesozooplankton in the coastal upwelling zone off central-southern Chile
It is concluded that upwelling is the key process modulating variability in zooplankton biomass and its community structure in this zone and may be largely the result of the aggregation of dominant copepods within the upwelled region. Expand
Feeding of Sagitta enflata and vertical distribution of chaetognaths in relation to low oxygen concentrations
Gut content analyses demonstrated that predation was principally focused on small copepod (<1500 μm), with greatest feeding activity occurring at night, and chaetognaths may strongly influence the abundance and size distribution of copepods in coastal upweelling ecosystems. Expand
Seasonal plankton variability in Chilean Patagonia fjords: Carbon flow through the pelagic food web of Aysen Fjord and plankton dynamics in the Moraleda Channel basin
Abstract Two research cruises ( CIMAR 13 Fiordos ) were conducted in the N–S oriented macrobasin of the Moraleda Channel (42–47°S), which includes the E–W oriented Puyuhuapi Channel and Aysen Fjord,Expand
Plankton dynamics and zooplankton carcasses in a mid-latitude estuary and their contributions to the local particulate organic carbon pool
The summer contribution of zooplankton carcasses to the particulate organic carbon standing stock along the Valdivia River estuary is linked to the presence of large amounts of dead barnacle nauplii that are a pulsed source to the estuary of highly labile POC. Expand
The role of the chaetognath Sagitta gazellae in the vertical carbon flux of the Southern Ocean
Rough estimates using published seasonal abundance of S. gazellae indicate that, at 360 m depth in the Lazarev Sea, this specie may contribute 12 and 5% of the total vertical carbon flux in winter (ice-covered) and summer ( ice-free), respectively, suggesting the role of chaetognaths in the downward transport of organic matter may be far more important than previously thought. Expand
Distribution and feeding of chaetognaths in the epipelagic zone of the Lazarev Sea (Antarctica) during austral summer
Size distribution and maturity of E. hamata revealed a dominance of small and immature organisms along all depths and stations, suggesting that this area might be acting as an important source of recently spawned organisms to the surface. Expand
The role of water column stability and wind mixing in the production/export dynamics of two bays in the Western Antarctic Peninsula
Abstract During January and February 2017 massive phytoplankton blooms (chlorophyll > 15 mg m−3) were registered in surface waters within two bays in the Western Antarctic Peninsula (WAP). ReflectingExpand
Breeding season of the South American fur seal(Arctocephalus australis, Otariidae: Carnivora): New data for establishing independent evolutionary histories?
El lobo fino Sudamericano (SAFS) se distribuye desde Peru hasta Uruguay. Sin embargo, existe un area de 2,300 km a lo largo de la costa de Chile donde no se registran ejemplares de SAFS. A partir deExpand
Spontaneous Nasopharyngeal Malignancies in the Common Marmoset
Comparative studies of spontaneous animal tumors offer a good opportunity to determine cause and to develop improved treatment and prevention of cancer in man.I5 The nose, mouth and esophagus areExpand