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Land-based predator impact on vertically migrating zooplankton and micronekton advected to a Southern Ocean archipelago
Combined acoustic (12 and 120 kHz) and trawling (RMT-2 and Bongo net) surveys in offshore waters of the Prince Edward Archipelago revealed diurnal vertical migration of major prey species (theExpand
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Mesozooplankton size-selectivity and grazing impact on the phytoplankton community of the Prince Edward Archipelago (Southern Ocean)
Dense phytoplankton blooms are often found during austral summer and autumn in the Prince Edward Archipelago (47' S, 38' E). These blooms are dominated by the large diatoms Chaetoceros radicans andExpand
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Trophodynamics of the hyperiid amphipod Themisto gaudichaudi in the South Georgia region during late austral summer
The feeding dynamics and predation impact of the hyperiid amphipod Themisto qaudichaudi on mesozooplankton were studied in the vicinity of South Georgia, Southern Ocean, during austral summer 1994.Expand
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Relationships between Zoo- and Phytoplankton in a Warm-temperate, Semi-permanently Closed Estuary, South Africa
Abstract Seasonal surveys were carried out in the shallow, well-conserved temporarily open Nyara Estuary in the Eastern Cape, South Africa. Although temporarily open estuaries constitute over 70% ofExpand
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Spatio-temporal Dynamics of Phytoplankton and Microphytobenthos in a South African Temporarily-open Estuary
Of South Africa's 250 estuaries, 182 (73% of the total) are classified as temporarily-open. There is, however, little information currently available on their physico-chemical-biological propertiesExpand
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Comparative structure of the macrozooplankton/ micronekton communities of the Subtropical and Antarctic Polar Fronts
The composibon, distribution, abundance, biomass and size-structure of macroplankton/ mcronekton communities at the Subtropical Convergence (STC) and the Antarctic Polar Front (APF) regions wereExpand
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Phytoplankton biomass and size structure in two South African eutrophic, temporarily open/closed estuaries
Abstract The biomass and size structure of phytoplankton were compared in the temporarily open/closed Mdloti and Mhlanga estuaries, in KwaZulu-Natal, South Africa. Samples and measurements were takenExpand
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Annual cycle of microalgal biomass in a South African temporarily-open estuary: nutrient versus light limitation
The vast majority (73%) of South African estuaries are temporarily-open systems. There is virtually no information available on their trophic functioning, particularly at the lower levels of the foodExpand
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Planktonic food webs and benthic-pelagic coupling in three South African temporarily-open estuaries
Abstract Seventy-three percent of South African estuaries are temporarily-open and close off from the sea during the dry season, under low river inflow. Following periods of high rainfall, the waterExpand
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