Please note that this is a staging site.
887 datasets found Page 29 of 36
DOI: 10.15493/DEA.MIMS.05072023
Processed CTD continuous observations from the West Coast Hake Biomass Survey on the Africana Voyage 054, June 1987

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 16 June and 10 July 1987, during the West Coast Hake Biomass Cruise on the Africana Voyage 054, in 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 between 1983 and 2000. The scientific targets of the trip revolved around the determination of biomass index of both Cape hake species off the South African west coast. The diurnal cycle of Cape hake and their relationship with environmental parameters was also studied. Some hake material were collected in South West African waters. Deep-water trawls were made to delimit the offshore extent of hake distribution and to collect rare specimens of fish for accession to museums. Demersal community interrelationships were studied, as...

DOI: 10.15493/DEA.MIMS.01902023
West Coast Hake Biomass Survey on the Africana Voyage 050, January 1987

The objectives of the cruise were to survey by means of trawling the abundance of adult and recruiting hake; to investigate the the diurnal cycle of hake and other demersal species; to investigate the environment and interrelationships of hake and other demersal species; to establish the offshore limit of hake and monkfish distribution and to collect deep-water specimens of fish and cephalopods; to conduct mouth-opening experiments with transducers on each wing of the net, and to compare the mouth opening and fishing capabilities of V doors and Polyvalent doors; to study community interrelationships and assemblages and to collect data on hake and other species from the International Commission for the South-East Atlantic Fisheries (ICSEAF) Division 1.5, ie: north of the South African border.

DOI: 10.15493/DEA.MIMS.04462023
Processed CTD discrete observations from the West Coast Hake Biomass Survey on the Africana Voyage 050, January 1987

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected between 06 January and 31 January 1987, during the West Coast Hake Biomass Cruise on the Africana Voyage 050, in 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 between 1983 and 2000. The objectives of the cruise were to survey by means of trawling the abundance of adult and recruiting hake; to investigate the the diurnal cycle of hake and other demersal species; to investigate the environment and interrelationships of hake and other demersal species; to establish the offshore limit of hake and monkfish distribution and to collect deep-water specimens of fish and cephalopods; to conduct mouth-opening experiments with transducers on each wing of the net, and to compare the...

DOI: 10.15493/DEA.MIMS.04422023
Processed CTD continuous observations from the West Coast Hake Biomass Survey on the Africana Voyage 050, January 1987

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 06 January and 31 January 1987, during the West Coast Hake Biomass Cruise on the Africana Voyage 050, in 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 between 1983 and 2000. The objectives of the cruise were to survey by means of trawling the abundance of adult and recruiting hake; to investigate the the diurnal cycle of hake and other demersal species; to investigate the environment and interrelationships of hake and other demersal species; to establish the offshore limit of hake and monkfish distribution and to collect deep-water specimens of fish and cephalopods; to conduct mouth-opening experiments with transducers on each wing of the net, and to compare the mouth...

DOI: 10.15493/DEA.MIMS.04332023
Processed CTD continuous observations from the South Coast Hake Biomass Survey on the Africana Voyage 048, September 1986

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 12 September and 03 October 1986, during the South Coast Hake Biomass Cruise on the Africana Voyage 048, in the southern part of the Agulhas Current Large Marine Ecosystem (ACLME) on the south 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 between 1983 and 2000. The objective of the cruise was to survey by means of trawling the abundance of adult and recruiting hake, sole and other trawl target species; an investigation of the environment and interrelationships of hake and other demersal species in various depth strata; to investigate the occurence, distribution and abundance of squid and squid larvae; and to investigate the occurence of linefish species in shallow waters.

DOI: 10.15493/DEA.MIMS.03612023
Processed CTD continuous observations from the Anchovy Recruitment on the Africana Voyage 047, August 1986

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 04 August and 29 August 1986, during the Pelagic Winter Survey on the Africana Voyage 047, in the southern part of the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of South Africa and in the Agulhas Current Large Marine Ecosystem (ACLME) on the south 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 between 1983 and 2000. The main objectives of the cruise were a direct assessment of the biomass of adult anchovy and pilchard on the South and East coasts by acoustic survey, supplemented by aerial fish spotting (East Coast only); an acoustic investigation of the distribution and behaviour of other pelagic fish of commercial importance; an investigation of the relationship between anchovy, pilchard and the...

DOI: 10.15493/DEA.MIMS.34122022
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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.

DOI: 10.15493/DEA.MIMS.68122022
Processed CTD discrete observations from the West Coast Hake Biomass on the Africana Voyage 046, July 1986

This is processed Conductivity-Temperature-Depth (CTD) discrete data from the West Coast Hake Biomass on the Africana Voyage 046. The cruise operated in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of South Africa. The West Coast Hake Biomass was carried out on the Africana Voyage 046 from 1 to 24 July 1986.

DOI: 10.15493/DEA.MIMS.67122022
Processed CTD continuous observations from the West Coast Hake Biomass on the Africana Voyage 046, July 1986

This is processed downcast Conductivity-Temperature-Depth (CTD) continuous data from the West Coast Hake Biomass on the Africana Voyage 046. The cruise operated in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of South Africa. The West Coast Hake Biomass was carried out on the Africana Voyage 046 from 1 to 24 July 1986.

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 hake distribution; if possible to rendezvous with Spanish and Soviet vessels and to carry out standardisation trawls in parallel and to conduct net mouth-opening experiments with transducers on each wing of the net.

DOI: 10.15493/DEA.MIMS.64122022
Processed CTD discrete observations from the West Coast Hake Biomass on the Africana Voyage 039, January 1986

This is processed Conductivity-Temperature-Depth (CTD) discrete data from the West Coast Hake Biomass on the Africana Voyage 039, collected between 08 January and 05 February 1986. The cruise operated in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of South Africa. 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 hake distribution; if possible to rendezvous with Spanish and Soviet vessels and to carry out standardisation trawls in parallel and to conduct net mouth-opening experiments with transducers on each wing...

DOI: 10.15493/DEA.MIMS.63122022
Processed CTD continuous observations from the West Coast Hake Biomass on the Africana Voyage 039, January 1986

This is processed downcast Conductivity-Temperature-Depth (CTD) continuous data from the West Coast Hake Biomass on the Africana Voyage 039, collected between 08 January and 05 February 1986. The cruise operated in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of South Africa. 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 hake distribution; if possible to rendezvous with Spanish and Soviet vessels and to carry out standardisation trawls in parallel and to conduct net mouth-opening experiments with transducers...

(No DOI)
Processed Chl-a data from the Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on the Algoa Voyage 235, February 2017

This is processed Chl-a data from the Integrated Ecosystem Programme: Southern Benguela (IEP:SB) cruise which was conducted on the Algoa Voyage 235 from 16 February 2017 to 28 February, 2017. IEP:SB focuses on the biologically productive, cold waters of the Benguela Current Large Marine Ecosystem, which are inherently variable on short time-scales and responsive to changing weather patterms. The research aims to provide relevant, reliable and improved assessment of the ecosystem, in support of its effective management, preservation and conservation, so that South Africans can benefit from a healthy and well-functioning ocean environment. The overarching objective is to enhance understanding in process studies by assessing the importance, timing and magnitude of mechanisms and processes that influence the Southern Benguela ecosystem structure and functioning, including the climate variability.

(No DOI)
Processed CTD discrete observations from the Algoa Voyage 234, January 2017

SeaBird SBE911 plus Conductivity-Temperature-Depth (CTD) instruments were used to measure pressure, temperature and conductivity through the water column during research and monitoring cruises between 1983 and 2000. Here we present processed CTD discrete data from the upcast collected, between 13 January and 11 February 2017, during voyage 234 on the RV Algoa, in the Agulhas Current Large Marine Ecosystem (ACLME) on the south coast of South Africa.

(No DOI)
Processed CTD continuous observations from the Algoa Voyage 234, January 2017

SeaBird SBE911 plus Conductivity-Temperature-Depth (CTD) instruments were used to measure pressure, temperature and conductivity through the water column during research and monitoring cruises from 2000. Here we present processed downcast CTD continuous data collected, between 13 January and 11 February 2017, during Voyage 234 on the RV Algoa, in the Agulhas Current Large Marine Ecosystem (ACLME) on the south coast of South Africa.

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 between the distribution of pelagic fish, eggs and water temperature.

(No DOI)
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Echo sounder data from ACEP Deep Secrets: The Outer Shelf and Slope Ecosystems of the Eastern Cape on the Algoa Voyage 230, September 2016

This is Echo Sounder data collected on the ACEP Deep Secrets Cruise which set out to fill in gaps and shed light on the priority areas and research questions identified during the recent Marine Protected Area and Marine Spatial Planning Initiatives of Operation Phakisa’s Marine Protection and Governance Lab. Using underwater cameras (SkiMonkey and Drop camera), grabs, dredges and a CTD the study aimed to improve our knowledge on marine offshore habitats, as well as to build understanding of the effects of the expanding fishing and petroleum industries on marine offshore communities.

DOI: 10.15493/DEA.MIMS.61122022
Processed CTD continuous observations from the Anchovy Spawning Stock Survey on the Africana Voyage 038, November 1985

This is processed downcast Conductivity-Temperature-Depth (CTD) continuous data from the Anchovy Spawning Stock Survey on the Africana Voyage 038, collected between 11 and 29 November 1985. The cruise operated in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of South Africa and the Agulhas Current Large Marine Ecosystem (ACLME) on the south coast of South Africa. 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 between the distribution of pelagic fish, eggs and water temperature.

(No DOI)
No Download
Raw TSG data from ACEP Deep Secrets: The Outer Shelf and Slope Ecosystems of the Eastern Cape on the Algoa Voyage 230, September 2016

This is raw Thermosalinograph (TSG) data collected on the ACEP Deep Secrets Cruise which set out to fill in gaps and shed light on the priority areas and research questions identified during the recent Marine Protected Area and Marine Spatial Planning Initiatives of Operation Phakisa’s Marine Protection and Governance Lab. Using underwater cameras (SkiMonkey and Drop camera), grabs, dredges and a CTD the study aimed to improve our knowledge on marine offshore habitats, as well as to build understanding of the effects of the expanding fishing and petroleum industries on marine offshore communities.

(No DOI)
No Download
Raw SADCP data from ACEP Deep Secrets: The Outer Shelf and Slope Ecosystems of the Eastern Cape on the Algoa Voyage 230, September 2016

This is raw Shipboard Acoustic Doppler Current Profiler (SADCP) data collected on the ACEP Deep Secrets Cruise which set out to fill in gaps and shed light on the priority areas and research questions identified during the recent Marine Protected Area and Marine Spatial Planning Initiatives of Operation Phakisa’s Marine Protection and Governance Lab. Using underwater cameras (SkiMonkey and Drop camera), grabs, dredges and a CTD the study aimed to improve our knowledge on marine offshore habitats, as well as to build understanding of the effects of the expanding fishing and petroleum industries on marine offshore communities.

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 already been established. The second objective was to investigate, by trawling, the depth distribution of squid in the area 23 30'E and 24 30'E, from as close as possible to the coast (i.e. as shallow as possible) to a depth of 500m.

DOI: 10.15493/DEA.MIMS.59122022
Processed CTD continuous observations from the South Coast Hake Biomass on the Africana Voyage 036, October 1985

This is processed downcast Conductivity-Temperature-Depth (CTD) continuous data from the South Coast Hake Biomass on the Africana Voyage 036, collected between 15 and 26 October 1985. The cruise operated in the Agulhas Current Large Marine Ecosystem (ACLME) region on the south coast of South Africa. 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 already been established. The second objective was to investigate, by trawling, the depth distribution of squid in the area 23 30'E and 24 30'E, from as close as possible to the coast (i.e. as shallow...

DOI: 10.15493/DEA.MIMS.30122022
Spanish-Namibian Environmental Cruise (SNEC) on the Africana Voyage 035, September 1985

The objective of this cruise was to investigate the hydrology and plankton of the coastal waters off Nambia between 20 S and 26 S.

DOI: 10.15493/DEA.MIMS.56122022
Processed CTD discrete observations from the Spanish-Namibian Environmental Cruise (SNEC) on the Africana Voyage 035, September 1985

This is processed Conductivity-Temperature-Depth (CTD) discrete data from the Spanish-Namibian Environmental Cruise (SNEC) on the Africana Voyage 035, collected between 16 September and 06 October 1985. The cruise operated in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of South Africa. The objective of this cruise was to investigate the hydrology and plankton of the coastal waters off Nambia between 20 S and 26 S.

DOI: 10.15493/DEA.MIMS.55122022
Processed CTD continuous observations from the Spanish-Namibian Environmental Cruise (SNEC) on the Africana Voyage 035, September 1985

This is processed downcast Conductivity-Temperature-Depth (CTD) continuous data from the Spanish-Namibian Environmental Cruise (SNEC) on the Africana Voyage 035, collected between 16 September and 06 October 1985. The cruise operated in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of South Africa. The objective of this cruise was to investigate the hydrology and plankton of the coastal waters off Nambia between 20 S and 26 S.

887 datasets found Page 29 of 36

Geographic extent

Temporal extent