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887 datasets found Page 1 of 36
DOI: 10.15493/DEA.MIMS.20250406
HF radar sea surface velocity off the South African coast and processed with HYDDOA v.2

This dataset contains sea surface velocity measurements from six High-Frequency (HF) radar stations located along the South African coast, between Mossel Bay in the Western Cape and Port Elizabeth in the Eastern Cape. The HYDDOA v.2 framework is used to process the data, producing high-resolution, quality-controlled velocity fields that are appropriate for research and operational oceanography. The end date of the dataset is dynamic and subject to frequent updates since new data is constantly being retrieved.

DOI: 10.15493/dea.mims.26500007
Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on the Algoa Voyage 262, August 2019

The Integrated Ecosystem Programme: Southern Benguela (IEP:SB) was conducted on the Algoa Voyage 262, August 2019. Multi-disciplinary, multi-institutional platform to undertake relevant science in the Southern Benguela; also functioning as a platform for collaboration and learning. All projects aim to develop an ecosystem indicator that can be used to effectively monitor and understand the Southern Benguela i.e physical, chemical, planktonic, microbial, seabird and benthic ecosystem indicators, used for ecosystem-based management.

DOI: 10.15493/DEA.MIMS.18052026
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Microplankton image observations for August 2019 on the Integrated Ecosystem Programme: Southern Benguela (IEP:SB)

Microplankton, comprising both phyto- and zooplankton in the 20-200μm size range, are a diverse and ecologically significant 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 the transfer of energy to higher trophic levels. Although microplankton occur throughout the world's oceans, their diversity and abundance varies spatially and temporally. Due to their high sensitivity and rapid response to changes in the environment, their biomass and diversity are considered Essential Ocean Variables (EOV's) for routine and sustained long term observations to assess global ocean changes. This dataset forms part of the routine monitoring along the west coast of South Africa under the Integrated Ecosystem Programme: Southern Benguela, which occurs biannually in February and August. This resource contains raw image data for August 2019 obtained from water samples processed using a FlowCam VS3...

DOI: 10.15493/DEA.MIMS.250121-9
Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on the Algoa Voyage 258, February 2019

This Integrated Ecosystem Programme: Southern Benguela (IEP:SB) cruise was conducted on the Algoa Voyage 258 in February 2019. This is a long-term monitoring line conducted off the coast of Kleinsee, Namaqualand, Elands/St Helena Bay and Scarborough on the west coast of South Africa. The IEP:SB in 2013 consolidated a long-term, multi-decadal time-series (from 1951 onward) of information for this important region and has continued monitoring in the form of the IEP:SB. The programme is a multi-disciplinary, collaborative and capacity building platform undertaking relevant science, including updating technology, with the aim to develop ecosystem indicators that can be used to effectively monitor and understand the Southern Benguela. These include physical, chemical, planktonic, microbial, seabird, marine mammal, benthic and pollution (plastic) ecosystem indicators as required by ecosystem-based management regarding the following priorities: ocean warming, ocean acidification, trophic...

DOI: 10.15493/DEA.MIMS.17052026
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Microplankton image observations for February 2019 on the Integrated Ecosystem Programme: Southern Benguela (IEP:SB)

Microplankton, comprising both phyto- and zooplankton in the 20-200μm size range, are a diverse and ecologically significant 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 the transfer of energy to higher trophic levels. Although microplankton occur throughout the world's oceans, their diversity and abundance varies spatially and temporally. Due to their high sensitivity and rapid response to changes in the environment, their biomass and diversity are considered Essential Ocean Variables (EOV's) for routine and sustained long term observations to assess global ocean changes. This dataset forms part of the routine monitoring along the west coast of South Africa under the Integrated Ecosystem Programme: Southern Benguela, which occurs biannually in February and August. This resource contains raw image data for February 2019 obtained from water samples processed using a FlowCam VS3...

DOI: 10.15493/DEA.MIMS.250121-10
Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on the Algoa Voyage 255, November 2018

This Integrated Ecosystem Programme: Southern Benguela (IEP:SB) cruise was conducted on the Algoa Voyage 255 in November 2018. This is a long-term monitoring line conducted off the coast of Kleinsee, Namaqualand, Elands/St Helena Bay and Scarborough on the west coast of South Africa. The IEP:SB in 2013 consolidated a long-term, multi-decadal time-series (from 1951 onward) of information for this important region and has continued monitoring in the form of the IEP:SB. The programme is a multi-disciplinary, collaborative and capacity building platform undertaking relevant science, including updating technology, with the aim to develop ecosystem indicators that can be used to effectively monitor and understand the Southern Benguela. These include physical, chemical, planktonic, microbial, seabird, marine mammal, benthic and pollution (plastic) ecosystem indicators as required by ecosystem-based management regarding the following priorities: ocean warming, ocean acidification, trophic...

DOI: 10.15493/DEA.MIMS.16052026
No Download
Microplankton image observations for November 2018 on the Integrated Ecosystem Programme: Southern Benguela (IEP:SB)

Microplankton, comprising both phyto- and zooplankton in the 20-200μm size range, are a diverse and ecologically significant 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 the transfer of energy to higher trophic levels. Although microplankton occur throughout the world's oceans, their diversity and abundance varies spatially and temporally. Due to their high sensitivity and rapid response to changes in the environment, their biomass and diversity are considered Essential Ocean Variables (EOV's) for routine and sustained long term observations to assess global ocean changes. This dataset forms part of the routine monitoring along the west coast of South Africa under the Integrated Ecosystem Programme: Southern Benguela, which occurs biannually in February and August. This resource contains raw image data for November 2018 obtained from water samples processed using a FlowCam VS3...

DOI: 10.15493/DEA.MIMS.15052026
No Download
Microplankton image observations for August 2018 on the Integrated Ecosystem Programme: Southern Benguela (IEP:SB)

Microplankton, comprising both phyto- and zooplankton in the 20-200μm size range, are a diverse and ecologically significant 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 the transfer of energy to higher trophic levels. Although microplankton occur throughout the world's oceans, their diversity and abundance varies spatially and temporally. Due to their high sensitivity and rapid response to changes in the environment, their biomass and diversity are considered Essential Ocean Variables (EOV's) for routine and sustained long term observations to assess global ocean changes. This dataset forms part of the routine monitoring along the west coast of South Africa under the Integrated Ecosystem Programme: Southern Benguela, which occurs biannually in February and August. This resource contains raw image data for August 2018 obtained from water samples processed using a FlowCam VS3...

DOI: 10.15493/dea.mims.26052248
Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on Algoa Voyage 252, August 2018

The Integrated Ecosystem Programme: Southern Benguela (IEP:SB) Cruise was conducted on the Algoa Voyage 252 in August 2018. The Integrated Ecosystem Programme: Southern Benguela is a multi-disciplinary, multi-institutional platform to undertake relevant science in the Southern Benguela; also functioning as a platform for collaboration and learning. All projects aim to develop an ecosystem indicator that can be used to effectively monitor and understand the Southern Benguela i.e physical, chemical, planktonic, microbial, seabird and benthic ecosystem indicators, used for ecosystem-based management.

DOI: 10.15493/dea.mims.26052249
Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on Algoa Voyage 248, May 2018

The Integrated Ecosystem Programme: Southern Benguela (IEP:SB) Cruise was conducted on the Algoa Voyage 248 in May 2018. The Integrated Ecosystem Programme: Southern Benguela is a multi-disciplinary, multi-institutional platform to undertake relevant science in the Southern Benguela; also functioning as a platform for collaboration and learning. All projects aim to develop an ecosystem indicator that can be used to effectively monitor and understand the Southern Benguela i.e physical, chemical, planktonic, microbial, seabird and benthic ecosystem indicators, used for ecosystem-based management.

DOI: 10.15493/DEA.MIMS.14052026
No Download
Microplankton image observations for May 2018 on the Integrated Ecosystem Programme: Southern Benguela (IEP:SB)

Microplankton, comprising both phyto- and zooplankton in the 20-200μm size range, are a diverse and ecologically significant 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 the transfer of energy to higher trophic levels. Although microplankton occur throughout the world's oceans, their diversity and abundance varies spatially and temporally. Due to their high sensitivity and rapid response to changes in the environment, their biomass and diversity are considered Essential Ocean Variables (EOV's) for routine and sustained long term observations to assess global ocean changes. This dataset forms part of the routine monitoring along the west coast of South Africa under the Integrated Ecosystem Programme: Southern Benguela, which occurs biannually in February and August. This resource contains raw image data for May 2018 obtained from water samples processed using a FlowCam VS3...

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.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.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.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.32042026
South Coast Demersal Biomass Survey on the Africana Voyage 135, April 1996

The South Coast Demersal Biomass Survey was conducted on the Africana Voyage 135 from 10 April to 2 May 1996. 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; 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 approximately perpendicular to the coastline out towards the main stream of the Agulhas Current, as well as a mini-CTD transect grid in the Cape St Francis area; to conduct routine biological and length frequency sampling of the catch (specifically hake, squid, panga, sole, sharks and rays); to sample the catches for hake sex ratios, gonad stages and frequency of frill on gill; to sample hake from trawls in specific areas for histological...

DOI: 10.15493/DEA.MIMS.34042026
Processed CTD discrete observations from the South Coast Demersal Biomass Survey on the Africana Voyage 135, April 1996

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the downcast collected between 11 April and 29 April 1996 during voyage 135 on the Africana 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.33042026
Processed CTD continuous observations from the South Coast Demersal Biomass Survey on the Africana Voyage 135, April 1996

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 11 April and 29 April 1996, during voyage 135 on the Africana, 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.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.31042026
Processed CTD discrete observations from the West Coast Demersal Survey on the Africana Voyage 133, January 1996

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the downcast 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.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.28042026
Processed CTD discrete observations from the Pelagic Fish Spawner Biomass Survey on the Africana Voyage 132, November 1995

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the downcast collected between 13 November and 28 November 1995, during voyage 132 on the Africana, in the Benguela Current Large Marine Ecosystem (BCLME) on the west coast of Southern Africa and 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.27042026
Processed CTD continuous observations from the Pelagic Fish Spawner Biomass Survey on the Africana Voyage 132, November 1995

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 13 November and 28 November 1995, during voyage 132 on the Africana, in the Benguela Current Large Marine Ecosystem (BCLME) on the west coast of Southern Africa and 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.25042026
Processed CTD discrete observations from the South Coast Demersal Biomass Survey on the Africana Voyage 131, September 1995

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the downcast collected between 29 September and 19 October 1995, during voyage 131 on the Africana, 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.

887 datasets found Page 1 of 36

Geographic extent

Temporal extent