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Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) (382) ✕

382 datasets found Page 1 of 16
DOI: 10.15493/DEA.MIMS.13052026
South African records of azooxanthellate Scleractinians (i.e., stony cold-water corals)

South African azooxanthellate Scleractinia have not been comprehensively reviewed since Boshoff’s 1980 study, despite decades of additional sampling and scattered regional reports. This study updates the country’s coral species inventory by examining museum collections, particularly from the Iziko South African Museum and the Smithsonian Institution, alongside historical imagery, recent survey data, and existing literature. The results increase the known diversity from 77 to 108 species across eleven families, including 28 new national records, three new species, and one newly described genus.

DOI: 10.15493/DEA.MIMS.35042026
Agulhas Eddy-Filament Interactions on the Africana Voyage 138, December 1996

The Agulhas Eddy-Filament Interactions were conducted on the Africana Voyage 138 from 19 December to 24 December 1996. The objectives of the cruise were to characterise the Agulhas water observed off Cape Town in satellite imagery; to characterise the associated Agulhas Current leakage between the Agulhas intrusion and the shelf; to identify the cooler Agulhas Bank water associated with the intrusion, and to characterize their interaction; and to identify the plankton associated with the various components of the intrusion and shelf circulation.

DOI: 10.15493/DEA.MIMS.37042026
Processed CTD discrete observations from the Agulhas Eddy-Filament Interactions on the Africana Voyage 138, December 1996

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the downcast collected between 19 December and 24 December 1996 during voyage 138 on the Africana in the Benguela Current Large Marine Ecosystem (BCLME) on the west coast of Southern Africa. Neil Brown MK3 and MK4 CTD instruments were used to measure pressure, temperature and conductivity through the water column during research and monitoring cruises between 1983 and 2000.

DOI: 10.15493/DEA.MIMS.36042026
Processed CTD continuous observations from the Agulhas Eddy-Filament Interactions on the Africana on the Africana Voyage 138, December 1996

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 19 December and 24 December 1996 during voyage 138 on the Africana in the Benguela Current Large Marine Ecosystem (BCLME) on the west coast of Southern Africa. Neil Brown MK3 and MK4 CTD instruments were used to measure pressure, temperature and conductivity through the water column during research and monitoring cruises between 1983 and 2000.

DOI: 10.15493/DEA.MIMS.29042026
West Coast Demersal Survey on the Africana Voyage 133, January 1996

The West Coast Demersal Survey was conducted on the Africana Voyage 133 from 12 January to 20 February 1996. The objectives of the cruise were to survey by means of trawling the abundance of adult and recruiting hake in South African waters; to conduct routine biological and length frequency sampling of demersal species; to investigate the environmental and ecological inter-relationships of hake and other demersal species; to investigate the occurrence, distribution, reproduction and abundance of squid species; to investigate the distribution and biology of demersal species in water at depths greater than 500 m by means of demersal trawling; to sample catches for hake sex ratios and frequency of gill parasites; to conduct demersal environmental studies including intercalibration of bottom temperature measurements with commercial trawlers, CTD and ADCP measurements at ALL trawl stations and other specified stations, and box cores and transmissometer profiles at HODSA sites on the...

DOI: 10.15493/DEA.MIMS.30042026
Processed CTD continuous observations from the West Coast Demersal Survey on the Africana Voyage 133, January 1996

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 13 January and 19 February 1996 during voyage 133 on the Africana in the Benguela Current Large Marine Ecosystem (BCLME) on the west coast of Southern Africa. Neil Brown MK3 and MK4 CTD instruments were used to measure pressure, temperature and conductivity through the water column during research and monitoring cruises between 1983 and 2000.

DOI: 10.15493/DEA.MIMS.26042026
Pelagic Fish Spawner Biomass Survey on the Africana Voyage 132, November 1995

The Pelagic Fish Spawner Biomass Survey was conducted on the Africana Voyage 132 from 10 November to 4 December 1995. The objectives of the cruise were to estimate the biomass and population length structure of anchovy, pilchard, round herring and horse mackerel off South Africa by means of echo-integration and midwater trawling; the collection of anchovy, pilchard and round herring otoliths for age determination; the estimation of pilchard and, if time permits, anchovy biomass by means of the egg production method; the description of distribution and behaviour patterns of commercially harvested epi-pelagic and meso-pelagic fish, and the influence of oceanographic variables on these; the collection of biological data on reproduction, condition factors and diet of pelagic fish species; the profiling of currents by means of the acoustic doppler current profiler (ADCP) in order to track egg and larval drift; to determine phytoplankton biomass in the nanophytoplankton (<10 μm) and...

DOI: 10.15493/DEA.MIMS.23042026
South Coast Demersal Biomass Survey on the Africana Voyage 131, September 1995

The South Coast Demersal Biomass Survey was conducted on the Africana Voyage 131 from 28 September to 20 October 1995. The primary objective of the cruise was to conduct a stratified bottom trawl survey to assess the biomass, abundance and distribution of hake, sole, horse mackerel, squid and other trawl species on the Agulhas Bank up to 200m, but biased in terms of number of stations in depths up to 120m; to investigate the hydrology and current profiles of the South Coast and to relate this to the distribution of the major demersal trawl species, including five transects extending from specified areas on the South Coast and approximately perpendicular to the coastline out towards the main stream of the Agulhas Current; to do a selected number of deep bottom trawls, if time allows, to investigate the distribution and abundance of deepwater fauna; to conduct routine biological and length frequency sampling of demersal species; to sample squid intensively to establish their...

DOI: 10.15493/DEA.MIMS.35092025
Processed CTD discrete observations from the Plankton Dynamics During an Upwelling Cycle on the Africana Voyage 128, February 1995

Here we present processed downcast Conductivity-Temperature-Depth (CTD) discrete data collected between 16 February 1995 and 26 February 1995, during the Plankton Dynamics During an Upwelling Cycle cruise on the Africana Voyage 128, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of Southern Africa. The main objective of the cruise was to study plankton processes following upwelling and to track upwelled water masses with drogues.

DOI: 10.15493/DEA.MIMS.30092025
Plankton Dynamics During an Upwelling Cycle on the Africana Voyage 128, February 1995

The Plankton Dynamics During an Upwelling Cycle cruise was conducted from 14 to 28 February 1995 to study plankton processes following coastal upwelling off Cape Columbine and the Cape Peninsula. Mesoscale upwelled water masses were tracked using drogues, and routine sampling included CTD/rosette casts, nutrient uptake experiments and measurements of phytoplankton, microzooplankton and mesozooplankton. Transects perpendicular to the drogue track provided spatial perspective on bloom development and decline.

DOI: 10.15493/DEA.MIMS.34092025
Processed CTD continuous observations from the Plankton Dynamics During an Upwelling Cycle on the Africana Voyage 128, February 1995

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 16 February 1995 and 26 February 1995, during the Plankton Dynamics During an Upwelling Cycle cruise on the Africana Voyage 128, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of Southern Africa. The main objective of the cruise was to study plankton processes following upwelling and to track upwelled water masses with drogues.

DOI: 10.15493/DEA.MIMS.33092025
Processed CTD discrete observations from the West Coast Demersal Biomass Survey on the Africana Voyage 127, January 1995

Here we present processed downcast Conductivity-Temperature-Depth (CTD) discrete data collected between 07 January 1995 and 02 February 1995, during the West Coast Demersal Biomass Survey on the Africana Voyage 127, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of Southern Africa. The main objective of the cruise was to estimate the abundance of hake and other demersal species and to collect hydrological data.

DOI: 10.15493/DEA.MIMS.29092025
West Coast Demersal Biomass Survey on the Africana Voyage 127, January 1995

The West Coast Demersal Biomass Survey on the Africana Voyage 127 took place between 6 January and 3 February 1995. The survey collected bottom trawl catches and hydrological data, including CTD profiles, to estimate the abundance of hake and other demersal species off the west coast of South Africa. Deep-water trawls up to 1200m were conducted between the Orange River and Cape Agulhas. The cruise also included intercalibration trawling with the Norwegian research vessel Dr Fridtjof Nansen.

DOI: 10.15493/DEA.MIMS.32092025
Processed CTD continuous observations from the West Coast Demersal Biomass Survey on the Africana Voyage 127, January 1995

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 07 January 1995 and 02 February 1995, during the West Coast Demersal Biomass Survey on the Africana Voyage 127, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of Southern Africa. Neil Brown MK3 and MK4 CTD instruments were used to measure pressure, temperature and conductivity through the water column. The main objective of the cruise was to estimate the abundance of hake and other demersal species and to collect hydrological data.

DOI: 10.15493/DEA.MIMS.38042026
West Coast Demersal Biomass Survey on the Africana Voyage 139, January 1997

The West Coast Demersal Biomass Survey was conducted on the Africana Voyage 139 from 8 January to 30 January 1997. The objectives of the cruise were to survey, by means of trawling, the abundance of adult and recruiting hake in South African waters; to conduct routine biological and length frequency sampling of demersal species; to investigate the environmental and ecological inter-relationships of hake and other demersal species; to investigate the occurrence, distribution, reproduction and abundance of squid species; to investigate the distribution and biology of demersal species in water at depths greater than 500 m by means of demersal trawling; to sample catches of hake for sex ratios and frequency of gill parasites; to conduct demersal environmental studies including intercalibration of bottom temperature measurements with commercial trawlers, and CTD and ADCP measurements at all trawl stations and other specified stations; the collection of specimens for the South African...

DOI: 10.15493/DEA.MIMS.39042026
Processed CTD continuous observations from the West Coast Demersal Biomass Survey on the Africana Voyage 139, January 1997

Here we present processed Conductivity-Temperature-Depth (CTD) continuous data from the downcast collected between 9 January and 30 January 1997, during voyage 139 on the Africana, in the Benguela Current Large Marine Ecosystem (BCLME) on the west coast of Southern Africa. Neil Brown MK3 and MK4 CTD instruments were used to measure pressure, temperature and conductivity through the water column during research and monitoring cruises between 1983 and 2000.

DOI: 10.15493/DEA.MIMS.40042026
Processed CTD discrete observations from the West Coast Demersal Biomass Survey on the Africana Voyage 139, January 1997

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the downcast collected between 9 January and 30 January 1997, during voyage 139 on the Africana, in the Benguela Current Large Marine Ecosystem (BCLME) on the west coast of Southern Africa. Neil Brown MK3 and MK4 CTD instruments were used to measure pressure, temperature and conductivity through the water column during research and monitoring cruises between 1983 and 2000.

DOI: 10.15493/DEA.MIMS.41042026
Pelagic Pre-Recruit survey on the Africana Voyage 143, March 1997

The Pelagic Pre-Recruit Survey was conducted on the Africana Voyage 143 from 6 March to 27 March 1997. The objectives of the cruise were to profile currents by means of the Acoustic Doppler Current Profiler (ADCP); to estimate the biomass and population structure of pelagic pre-recruit fish off the West Coast by means of echo integration and midwater trawling; to investigate the extent of pelagic pre-recruit distribution and biomass index between Cape Columbine and Cape Infanta; to collect biological material for condition studies on pelagic pre-recruits; to collect ichthyoplankton samples and hydrological data along the weekly SARP line; to collect rock lobster phyllosoma and pueruli larvae for bioenergetic studies; and to collect environmental data.

DOI: 10.15493/DEA.MIMS.43042026
Processed CTD discrete observations from the Pelagic Pre-Recruit Survey on the Africana Voyage 143, March 1997

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the downcast collected between 08 March and 25 March 1997, during voyage 143 on the Africana, in the Benguela Current Large Marine Ecosystem (BCLME) on the west coast of Southern Africa and in the Agulhas Current Large Marine Ecosystem (ACLME) on the south coast of Southern Africa. Neil Brown MK3 and MK4 CTD instruments were used to measure pressure, temperature and conductivity through the water column during research and monitoring cruises between 1983 and 2000.

DOI: 10.15493/DEA.MIMS.42042026
Processed CTD continuous observations from the Pelagic Pre-Recruit Survey on the Africana Voyage 143, March 1997

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 08 March and 25 March 1997, during voyage 143 on the Africana, in the Benguela Current Large Marine Ecosystem (BCLME) on the west coast of Southern Africa and in the Agulhas Current Large Marine Ecosystem (ACLME) on the south coast of Southern Africa. Neil Brown MK3 and MK4 CTD instruments were used to measure pressure, temperature and conductivity through the water column during research and monitoring cruises between 1983 and 2000.

DOI: 10.15493/DEA.MIMS.15822023
Pelagic Fish Spawner Biomass Survey on the Africana Voyage 126, November 1994

The Pelagic Fish Spawner Biomass Survey was conducted on the Africana Voyage 126 from 11 November to 7 December 1994. The principal scientific tasks of this cruise were acoustic surveying whilst underway and frequent ad hoc midwater trawling on pelagic fish targets. Temperature profiles and egg samples were to be collected at 5- or 10-mile stations. On selected transects, zooplankton samples were to be collected with a vertical Bongo haul on station and an oblique Bongo tow out of the station. Temperature, light and fluorescence profiles were to be obtained using the Magnum. In addition, on these transects, the water samples were to be collected at the surface and the fluorescence maximum and live copepods collected by means of a drift net for incubation experiments to determine egg production and moulting rates. CTD casts and ADCP measurements were planned for certain stations during both legs.

DOI: 10.15493/DEA.MIMS.15842023
Processed CTD discrete observations from the Pelagic Fish Spawner Biomass Survey on the Africana Voyage 126, November 1994

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected between 11 November and 07 December 1994, during Voyage 126 on the FRS Africana, in the Benguela Current Large Marine Ecosystem (BCLME) on the west coast of Southern Africa and in the Agulhas Current Large Marine ecosystem (ACLME) on the south coast of Southern Africa. Neil Brown MK3 and MK4 CTD instruments were used to measure pressure, temperature and conductivity through the water column during research and monitoring cruises between 1983 and 2000.

DOI: 10.15493/DEA.MIMS.15832023
Processed CTD continuous observations from the Pelagic Fish Spawner Biomass Survey on the Africana Voyage 126, November 1994

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 11 November and 07 December 1994, during Voyage 126 on the FRS Africana, in the Benguela Current Large Marine Ecosystem (BCLME) on the west coast of Southern Africa and in the Agulhas Current Large Marine Ecosystem (ACLME) on the south coast of Southern Africa. Neil Brown MK3 and MK4 CTD instruments were used to measure pressure, temperature and conductivity through the water column during research and monitoring cruises between 1983 and 2000.

DOI: 10.15493/DEA.MIMS.15862023
Analysed nutrient data from the Gough Island Relief Voyage on the SA Agulhas II 068, September 2025

Dissolved inorganic macronutrients nitrate (NO3), nitrite (NO2), silicate (PO4) and phosphate (PO4) in the upper waters of the ocean. The availability of these macronutrients limits and regulates the production of organic matter during photosynthesis. Therefore, phytoplankton uptake of the macronutrients plays a necessary role concerning biogeochemical cycling of carbon around Gough Island and the Southern Ocean. Here we present macronutrients data collected along the upstream, near island and downstream of the Gough Island (39.8 °S, 9.5 °W and 40.8 °S, 10.4 °W) during the yearly logistical voyage of the Department of Forestry, Fisheries and the Environment (DFFE) from the 15 September to 15 October 2025. We sampled 10 stations which were grouped into three categories: upstream stations, near island stations and downstream stations. Seawater samples were analysed for macronutrients concentrations within three months of collection, with detection limits of 0.03 μM for nitrate +...

DOI: 10.15493/DEA.MIMS.15852023
Analysed nutrient data from the Gough Island Relief Voyage on the SA Agulhas II 064, September 2024

Dissolved inorganic macronutrients nitrate (NO3), nitrite (NO2), silicate (PO4) and phosphate (PO4) in the upper waters of the ocean. The availability of these macronutrients limits and regulates the production of organic matter during photosynthesis. Therefore, phytoplankton uptake of the macronutrients plays a necessary role concerning biogeochemical cycling of carbon around Gough Island and Southern Ocean. Here we present macronutrients data collected along the upstream, near island and downstream of the Gough Island (39.8 °S, 9.5 °W and 40.8 °S, 10.4 °W) during the yearly logistical voyage of the Department of Forestry, Fisheries and the Environment (DFFE) from the 5 September to 7 October 2024. We sampled 10 stations which were grouped into three categories: upstream stations, near island stations and downstream stations. Seawater samples were analysed for macronutrients concentrations within three months of collection, with detection limits of 0.03 μM for nitrate + nitrite,...

382 datasets found Page 1 of 16

Geographic extent

Temporal extent