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- W2016341812 abstract "The St Lucia Estuary is the largest estuarine lake in Africa and due to anthropogenic activities it has since the 1950s been kept isolated from its main source of freshwater, the Mfolozi River. Stakeholders are increasingly calling for a full reconnection of the historical linkage in order to initiate system restoration. Studies conducted to test the effects of turbidity on the copepod Acartiella natalensis and the mysid Mesopodopsis africana have shown that turbidity reduces the fitness of these species. The turbidity tolerance of the dominant copepod Pseudodiaptomus stuhlmanni has not yet been documented. The aim of this study was to determine the effects of turbidity on the feeding, respiration and mortality rates of P. stuhlmanni. Although chlorophyll a and phaeopigment consumption was negatively affected by inorganic silt, the use of natural silt resulted in more variable trends. In contrast, a positive relationship was found between total organic carbon (TOC) consumption and turbidity. The high ingestion rates in the highest turbidity treatments of the TOC experiments are attributed to gut loading of organically-enriched silt. High turbidity also resulted in increased respiration rates of P. stuhlmanni, highlighting the energetic demand of turbid environments. Compared with other previously studied St Lucia zooplankters, P. stuhlmanni appears to be relatively tolerant of high turbidity. However, as the overall effect on this species is also negative, it is concluded that the St Lucia Estuary needs to be protected from excessive silt inputs if its ecological integrity is to be sustained." @default.
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- W2016341812 date "2011-10-01" @default.
- W2016341812 modified "2023-10-12" @default.
- W2016341812 title "Biological invasions in the 21st century: Ecological impacts, predictions, and management across land and sea" @default.
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- W2016341812 doi "https://doi.org/10.1016/j.envres.2011.09.005" @default.
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