DOI: 10.15493/dea.mims.26052211
Marion Island Relief on the SA Agulhas II Voyage 036, April 2019

The 2019 Marion Relief Voyage offered the 7th opportunity to conduct multi-disciplinary, shipbased marine research focusing on links and interactions between air and sea, ocean physics, chemistry, biogeochemistry and biology, including microbial, planktic and benthic communities on board South Africa’s polar research and supply vessel MV SA Agulhas II en route to, and around, the sub-Antarctic Prince Edward archipelago. The overall aim was to continue contributing to an oceanographic...

DOI: 10.15493/dea.mims.26052207
Marion Island Annual Relief Voyage on the SA Agulhas II Voyage 024, April 2017

The Marion Island Annual Relief Voyage was conducted on the MV SA Agulhas II Voyage 024, 06 April to 12 May 2017. The 2017 Marion Relief Voyage offered the fifth opportunity to conduct multi-disciplinary, shipbased marine research focusing on links and interactions between air and sea, ocean physics, chemistry, biogeochemistry and biology, including microbial, planktic and benthic communities on board South Africa’s polar research and supply vessel MV SA Agulhas II en route to, and around,...

DOI: 10.15493/dea.mims.26052267
Marion Island Relief Voyage on the SA Agulhas II Voyage 030, April 2018

The Marion Island Relief Voyage was conducted on the SA Agulhas II Voyage 030 from 13 April to 28 April 2018. The 2018 Marion Relief Voyage 030 offered the 6th opportunity to conduct multi-disciplinary, shipbased marine research focusing on links and interactions between air and sea, ocean physics, chemistry, biogeochemistry and biology, including microbial and planktic communities on board South Africa’s polar research and supply vessel MV SA Agulhas II en route to, and around, the...

(No DOI)
Raw Shipboard Acoustic Doppler Current Profiler (SADCP) data from the International Indian Ocean Expedition 2 (IIOE2) cruise on SA Agulhas II Voyage 028, October 2017

This is raw Shipboard Acoustic Doppler Current Profiler (SADCP) data from the IIOE2 cruise on SA Agulhas II Voyage 028 in October, 2017. The International Indian Ocean Expedition 2 is a collaborative regional cruise to build capacity and strength within Africa. The focus will be on developing students in the region in the areas of physical oceanography, chemistry, biological oceanography, benthic biodiversity, marine top predators and marine plastics.

(No DOI)
Raw SDS data from the Marion Island Annual Relief Voyage on the SA Agulhas II Voyage 024, April 2017

This is raw Scientific Data System (SDS) data from the Marion Island Annual Relief Voyage on the MV SA Agulhas II Voyage 024, 06 April to 12 May 2017. The 2017 Marion Relief Voyage offered the fifth opportunity to conduct multi-disciplinary, shipbased marine research focusing on links and interactions between air and sea, ocean physics, chemistry, biogeochemistry and biology, including microbial, planktic and benthic communities on board South Africa’s polar research and supply vessel MV SA...

DOI: 10.15493/DEA.MIMS.26042025
Microplankton monitoring along the west coast of South Africa

Microplankton, comprising of both phyto- and zooplankton in the 20-200μm size range, are a diverse and ecologically important group. They form the foundation of the food web, are instrumental in carbon and nutrient cycling, generate at least 50% of global oxygen and facilitate energy flow to higher trophic levels. Although they are found in all oceans globally, their diversity and abundance is varied. Due to their high sensitivity and rapid response to changes in the environment, their...

DOI: 10.15493/DEA.MIMS.25122022
West Coast Hake Biomass on the Africana Voyage 022, July 1984

The objectives of this cruise were to survey by means of trawling the abundance of adult and recruiting hake; to investigate the diurnal cycle and the environment of hake and other demersal species; to carry out acoustic target identification of mesopelagic species using RMT-8 nets and to study the community interactions of fish species in the area.

DOI: 10.15493/DEA.MIMS.28122022
West Coast Hake Biomass on the Africana Voyage 028, January 1985

The objectives of this cruise were to survey by means of trawling the abundance of adult and recruiting hake; to investigate the diurnal cycle and the environment of hake and other demersal species; to compare trawling results of R.S. Africana with those of the Chicha Touza, the Spanish trawler used for similar surveys; to carry out acoustic target identification of mesopelagic species using RMT 8 nets and to retrieve two current meter arrays deployed during Voyage 025.

DOI: 10.15493/DEA.MIMS.05242023
Processed CTD continuous observations from the West Coast Hake Biomass Survey on the Africana Voyage 059, February 1988

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 02 February and 25 February 1988, during the West Coast Hake Biomass Cruise on the Africana Voyage 059, in the southern part of the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of South 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...

DOI: 10.15493/DEA.MIMS.51072024
West Coast Hake Biomass Survey on the Africana Voyage 100, February 1992

The West Coast Hake Biomass Survey was conducted on the Africana Voyage 100 from 06 February to 03 March 1992. The objectives of the cruise were to survey by means of bottom trawling the abundance of hake and other demersal species on the West Coast of South Africa; to investigate the environmental and ecological interrelationships of hake and other demersal species; to study the biology of chondrichthyan species; to investigate zooplankton scattering layers and their influence on the...

DOI: 10.15493/DEA.MIMS.15072024
Anchovy Recruitment Survey on the Africana Voyage 092, May 1991

The Anchovy Pilchard Recruitment Survey on the Africana Voyage 092 was conducted on the 7 to the 24 May 1991. The main objectives of the cruise were to estimate the abundance and size-structure of anchovy; a description of the distribution and behaviour patterns of anchovy and pilchard of recruits and the oceanographic variables on these; a collection of biological data on pelagic fish species; an examination of the distribution, abundance and production of plankton in relation to the...

DOI: 10.15493/DEA.MIMS.36072024
Pelagic Pre-Recruit Mesopelagic Biomass Survey on the Africana Voyage 090, March 1991

The Pelagic Pre-Recruit Mesopelagic Biomass Survey was conducted on the Africana Voyage 090 from 05-19 March 1991. The objectives of the cruise were to get an estimation of the biomass and population structure of epi-pelagic pre-recruit fish off the West Coast by means of echo-integration and midwater trawling; get an estimation of an epi-pelagic pre-recruit biomass index using quantitative Methot trawls; get an estimation of the biomass and population structure of mesopelagic fish using...

DOI: 10.15493/DEA.MIMS.54072024
Pelagic Pre-Recruit Mesopelagic Biomass Survey on the Africana Voyage 101, March 1992

The Pelagic Pre-Recruit Mesopelagic Biomass Survey was conducted on the Africana Voyage 101 from 11-23 March 1992. The objectives of the cruise were to get an estimation of the biomass and population structure of pelagic pre-recruit fish off the West Coast by means of echo-integration and midwater trawling; to get an estimation of a pelagic pre-recruit biomass index using quantitative Methot trawls; to get an an estimation of the biomass and population structure of mesopelagic fish using...

DOI: 10.15493/DEA.MIMS.11122024
Anchovy Recruitment Survey on the Africana Voyage 103, May 1992

The Anchovy Recruitment Survey was conducted on the Africana Voyage 103 from 12 - 28 May 1992. The main objectives of the cruise were to estimate the abundance and size-structure of anchovy and pilchard recruits; to describe the distribution and behaviour patterns of anchovy and pilchard recruits and the influence of oceanographic variables on these; to collect biological data on pelagic fish species and to examine the distribution, abundance and production of plankton in relation to the...

(No DOI)
Raw SDS data from the Moorings and Monitoring Lines Cruise: Cape Point and Port St Johns on the Algoa Voyage 204, November 2013

This is raw Scientific Data System (SDS) data from the Moorings and Monitoring Lines Cruise: Cape Point and Port St Johns on the Algoa Voyage 204, 25 November to 6 December, 2013. The South Coast Mooring Cruise had two scientific objectives: (1) Service, maintain and extend the in situ operational oceanography network currently deployed around South Africa and (2) to investigate the dynamics of the Port St Johns eddy and biological implications.

DOI: 10.15493/DEA.MIMS.05292023
Processed CTD discrete observations from the South Coast Hake Biomass Survey on the Africana Voyage 063, May 1988

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected between 10 May and 03 June 1988, during the South Coast Hake Biomass Cruise on the Africana Voyage 063, in the southern part of the Agulhas Current Large Marine Ecosystem (ACLME) on the south coast of South Africa and the southern part of the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of South Africa. Neil Brown MK3 and MK4 CTD instruments were used to measure...

(No DOI)
Raw CTD data from the Pelagic Biomass Survey on the Africana Voyage 290, October 2016

This is raw Conductivity, Temperature, Depth (CTD) data from the Pelagic Biomass Survey on the Africana Voyage 290 from 25 October - 14 December 2016. The cruise operated from Hondeklip Bay to Port St Johns, South Africa.The principal aim of the Pelagic Biomass Surveys is to obtain estimates of the total biomass of anchovy, sardine and west coast round herring and to obtain data on their population length frequency compositions, for input to the operational management procedure (OMP) for...

(No DOI)
Converted CTD data from the Pelagic Biomass Survey on the Africana Voyage 290, October 2016

This is converted Conductivity, Temperature, Depth (CTD) data from the Pelagic Biomass Survey on the Africana Voyage 290 from 25 October - 14 December 2016. The cruise operated from Hondeklip Bay to Port St Johns, South Africa.The principal aim of the Pelagic Biomass Surveys is to obtain estimates of the total biomass of anchovy, sardine and west coast round herring and to obtain data on their population length frequency compositions, for input to the operational management procedure (OMP)...

DOI: 10.15493/DEA.MIMS.41112024
Anchovy Recruitment Survey on the Africana Voyage 112, May 1993

The Anchovy Recruitment Survey on the Africana Voyage 112 was conducted from 18 May 1993 to June 05 1993. The main objectives of the cruise were to estimate the abundance and size-structure of anchovy and pilchard recruits; to describe the distribution and anchovy and pilchard recruits and the influence of oceanographic variables on these. To collect biological data on pelagic fish species and to examine the distribution, abundance and production of plankton in relation to the environment...

DOI: 10.15493/DEA.MIMS.32122022
Anchovy Spawning Stock Survey on the Africana Voyage 038, November 1985

The objectives of this cruise were to assess the size of the anchovy spawning stock in Cape waters by acoustic survey and estimation of egg production; describe the distribution and behaviour of other pelagic and mesopelagic fish of commercial importance; describe anchovy spawning patterns and estimate the precision of the parameters used in assessing spawning stock size by the egg production method (sex ratio, spawning fraction, fecundity, mean weight); and to investigate relationships...

DOI: 10.15493/DEA.MIMS.15112024
West Coast Hake Biomass Survey on the Africana Voyage 109, January 1993

The West Coast Hake Biomass Survey was conducted on the Africana Voyage 109 from 19 January to 08 February 1993. The objectives of the cruise were to survey by means of bottom trawling the abundance of hake and ither demersal species on the West Coast of South Africa; to investigate the environmental and ecological interrelationships of hake and other demersal species; to study the biology of chondrichthyan species; to investigate the evolution of chondrichthyan immune systems; to obtain...

DOI: 10.15493/DEA.MIMS.31122022
South Coast Hake Biomass on the Africana Voyage 036, October 1985

The first objective of this cruise was to establish, by means of surveying and trawling between 200m and 500m water depths, the feasibility of extending the hake biomass surveys to the South Coast. The area 20 E to 25 E, from 75m to 200m water depths, has already been covered during biomass surveys by Japanese research vessels, accompanied on each occasion by one of the Institute's scientists. The feasibility of trawling shallower than 200m in this region, albeit with heavy gear, has thus...

DOI: 10.15493/DEA.MIMS.33122022
West Coast Hake Biomass on the Africana Voyage 039, January 1986

The objectives of this cruise were to survey by means of trawling the abundance of adult and recruiting hake; to investigate the diurnal cycle of hake and other demersal species; to investigate the environment and ecological interrelationships of hake and other demersal species; to carry out acoustic target identification of mesopelagic species with RMT 8 nets; to make a few experimental trawls in deep water to search for the other species of monkfish and to determine the offshore limit of...

DOI: 10.15493/DEA.MIMS.34122022
West Coast Hake Biomass on the Africana Voyage 046, July 1986

The West Coast Hake Biomass was carried out on the Africana Voyage 046 from 1 to 24 July 1986.

(No DOI)
Processed CTD data from the Marion Island Annual Relief Voyage on the SA Agulhas II Voyage 024, April 2017

This is processed Conductivity, Temperature, Depth (CTD) data from the Marion Island Annual Relief Voyage on the SA Agulhas II Voyage 024, 06 April to 12 May 2017. The 2017 Marion Relief Voyage offered the fifth opportunity to conduct multi-disciplinary, shipbased marine research focusing on links and interactions between air and sea, ocean physics, chemistry, biogeochemistry and biology, including microbial, planktic and benthic communities on board South Africa’s polar research and supply...

Geographic extent

1000 km
Leaflet Tiles © Esri — Source: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, 2012

Temporal extent