Please note that this is a staging site.
212 datasets found Page 8 of 9
DOI: 10.15493/DEA.MIMS.11742023
Processed CTD continuous observations from the Pelagic Fish Biomass Survey on the Africana Voyage 078, November 1989

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 07 November and 30 November 1989 during Voyage 078 on the FRS Africana, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast and the Agulhas Current Large Marine Ecosystem (ACLME) region 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. The objectives of the Pelagic Fish Biomass Survey were to conduct an estimation of the biomass and population structure of anchovy, pilchard and round herring off South Africa by means of echo-integration and midwater trawling; to conduct an estimation of anchovy biomass by means of the egg production method; to describe the distribution and behaviour patterns of commercially harvested epi-pelagic and meso-pelagic fish, and the influence of...

DOI: 10.15493/DEA.MIMS.02112024
Processed CTD discrete observations from the South Coast Demersal Biomass Survey on the Africana Voyage 072, May 1989

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected, between 10 May and 29 May 1989, during voyage 072 on the FRS Africana, in the Agulhas Current Large Marine Ecosystem (ACLME) region 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.05282023
Processed CTD continuous observations from the South Coast Hake Biomass Survey on the Africana Voyage 063, May 1988

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data 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 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; to investigate the environment and interrelationships of hake and other demersal species in various depth strata; to study demersal community relationships; to investigate the occurence, distribution and abundance of squid; to...

DOI: 10.15493/DEA.MIMS.05202023
Processed CTD continuous observations from the Anchovy and Pilchard Spawning Stock Survey on the Africana Voyage 057, November 1987

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 05 November and 30 November 1987, during the Anchovy and Pilchard Spawning Stock Survey on the Africana Voyage 057, 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 pressure, temperature and conductivity through the water column during research and monitoring cruises between 1983 and 2000. The main objective of the cruise was to determine acoustically the biomass of the pilchard and anchovy spawning stocks between Hondeklip Bay and the eastern end of the Agulhas Bank. Additionally, the relationship between the distribution of pelagic fish, their eggs and the water temperature was investigated, and chemical samples were taken along lines of...

DOI: 10.15493/DEA.MIMS.05172023
Processed CTD discrete observations from the South Coast Hake Biomass Survey on the Africana Voyage 056, September 1987

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected between 08 September and 05 October 1987, during the South Coast Hake Biomass Cruise on the Africana Voyage 056, 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 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, sole and other trawl target species; to investigate the environment and ecological interrelationships of hake and other demersal species in the various depth strata; to investigate the occurence, distribution and abundance of squid and squid larvae; to...

DOI: 10.15493/DEA.MIMS.05152023
Processed CTD continuous observations from the South Coast Hake Biomass Survey on the Africana Voyage 056, September 1987

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 08 September and 05 October 1987, during the South Coast Hake Biomass Cruise on the Africana Voyage 056, 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 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, sole and other trawl target species; to investigate the environment and ecological interrelationships of hake and other demersal species in the various depth strata; to investigate the occurence, distribution and abundance of squid and squid larvae; to...

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...

(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.

(No DOI)
No Download
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.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...

(No DOI)
Processed CTD data from the South Coast Moorings and Monitoring Lines Cruise on the Algoa Voyage 213, December 2014

This is processed Conductivity, Temperature, Depth (CTD) data from the South Coast Moorings and Monitoring Lines Cruise on Algoa Voyage 213 on 1 to 19 December, 2014. Between 1988 and 2011, environmental and plankton sampling was conducted every summer along the South Coast during the annual pelagic spawner biomass surveys. Data collected during these cruises has provided valuable insight into environmental change in this region. There has been significant decline in copepod biomass on both the western and central Agulhas Bank over the past two decades, as well as a decline in the proportion of the large dominant species Calanus agulhensis, resulting in a shift towards a smaller copepod-dominated community. These changes are thought to have been largely driven by predation by planktivorous fish, which have increased in biomass since the mid-1990s, but increasing sea temperatures have also played a role. It is vital that we continue to monitor the environment and plankton community...

(No DOI)
Raw TSG data from the South Coast Moorings and Monitoring Lines Cruise on the Algoa Voyage 213, December 2014

This is raw Thermosalinograph (TSG) data from the South Coast Moorings and Monitoring Lines Cruise on Algoa Voyage 213 on 1 to 19 December, 2014. Between 1988 and 2011, environmental and plankton sampling was conducted every summer along the South Coast during the annual pelagic spawner biomass surveys. Data collected during these cruises has provided valuable insight into environmental change in this region. There has been significant decline in copepod biomass on both the western and central Agulhas Bank over the past two decades, as well as a decline in the proportion of the large dominant species Calanus agulhensis, resulting in a shift towards a smaller copepod-dominated community. These changes are thought to have been largely driven by predation by planktivorous fish, which have increased in biomass since the mid-1990s, but increasing sea temperatures have also played a role. It is vital that we continue to monitor the environment and plankton community in key areas off the...

(No DOI)
Pre-processed SADCP data from the South Coast Moorings and Monitoring Lines Cruise on the Algoa Voyage 213, December 2014

This is pre-processed Shipboard Acoustic Doppler Current Profiler (SADCP) data from the South Coast Moorings and Monitoring Lines Cruise on Algoa Voyage 213 on 1 to 19 December, 2014. Between 1988 and 2011, environmental and plankton sampling was conducted every summer along the South Coast during the annual pelagic spawner biomass surveys. Data collected during these cruises has provided valuable insight into environmental change in this region. There has been significant decline in copepod biomass on both the western and central Agulhas Bank over the past two decades, as well as a decline in the proportion of the large dominant species Calanus agulhensis, resulting in a shift towards a smaller copepod-dominated community. These changes are thought to have been largely driven by predation by planktivorous fish, which have increased in biomass since the mid-1990s, but increasing sea temperatures have also played a role. It is vital that we continue to monitor the environment and...

(No DOI)
Raw TSG data from the South Coast Mooring Cruise on the Algoa Voyage 208, July 2014

This is raw Thermosalinograph (TSG) data collected on the South Coast Mooring Cruise on the Algoa Voyage 208, 9 to 24 July 2014. 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. Between 1988 and 2011, environmental and plankton sampling was conducted every summer along the South Coast during the annual pelagic spawner biomass surveys. Data collected during these cruises has provided valuable insight into environmental change in this region. There has been significant decline in copepod biomass on both the western and central Agulhas Bank over the past two decades, as well as a decline in the proportion of the large dominant species Calanus agulhensis, resulting in a shift towards a smaller copepod-dominated community. These changes are thought to have been largely...

(No DOI)
Raw PC02 data from the South Coast Mooring Cruise on the Algoa Voyage 208, July 2014

Raw pCO2 data collected on the South Coast Mooring Cruise on the Algoa Voyage 208, 9 to 24 July 2014. 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. Between 1988 and 2011, environmental and plankton sampling was conducted every summer along the South Coast during the annual pelagic spawner biomass surveys. Data collected during these cruises has provided valuable insight into environmental change in this region. There has been significant decline in copepod biomass on both the western and central Agulhas Bank over the past two decades, as well as a decline in the proportion of the large dominant species Calanus agulhensis, resulting in a shift towards a smaller copepod-dominated community. These changes are thought to have been largely driven by predation by...

(No DOI)
Processed CTD data from the South Coast Mooring Cruise on the Algoa Voyage 208, July 2014

This is processed Conductivity, Temperature, Depth (CTD) data collected on the South Coast Mooring Cruise on the Algoa Voyage 208, 9 to 24 July 2014. 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. Between 1988 and 2011, environmental and plankton sampling was conducted every summer along the South Coast during the annual pelagic spawner biomass surveys. Data collected during these cruises has provided valuable insight into environmental change in this region. There has been significant decline in copepod biomass on both the western and central Agulhas Bank over the past two decades, as well as a decline in the proportion of the large dominant species Calanus agulhensis, resulting in a shift towards a smaller copepod-dominated community. These changes are thought...

(No DOI)
Raw SADCP data from the South Coast Mooring Cruise on the Algoa Voyage 208, July 2014

This is raw Shipboard Acoustic Doppler Current Profiler (SADCP) data collected on the South Coast Mooring Cruise on the Algoa Voyage 208, 9 to 24 July 2014.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. Between 1988 and 2011, environmental and plankton sampling was conducted every summer along the South Coast during the annual pelagic spawner biomass surveys. Data collected during these cruises has provided valuable insight into environmental change in this region. There has been significant decline in copepod biomass on both the western and central Agulhas Bank over the past two decades, as well as a decline in the proportion of the large dominant species Calanus agulhensis, resulting in a shift towards a smaller copepod-dominated community. These changes are...

(No DOI)
Raw TSG data from the Walters Shoal Cruise on Algoa Voyage 207, May 2014

This is raw Thermosalinograph (TSG) data collected on the Walters Shoal Cruise on Algoa Voyage 207, 15 May to 11 June 2014. The purpose of this cruise was to survey the oceanographic conditions and plankton distributions around Walter Shoal seamount, from beyond the 1000m contour line across the plateau.

(No DOI)
Raw SDS data from the Walters Shoal Cruise on Algoa Voyage 207, May 2014

This is Scientific Data System (SDS) data collected on the Walters Shoal Cruise on Algoa Voyage 207, 15 May to 11 June 2014. The purpose of this cruise was to survey the oceanographic conditions and plankton distributions around Walter Shoal seamount, from beyond the 1000m contour line across the plateau.

(No DOI)
Processed CTD data from the Walters Shoal Cruise on Algoa Voyage 207, May 2014

This is processed Conductivity, Temperature, Depth (CTD) data collected on the Walters Shoal Cruise on Algoa Voyage 207, 15 May to 11 June 2014. The purpose of this cruise was to survey the oceanographic conditions and plankton distributions around Walter Shoal seamount, from beyond the 1000m contour line across the plateau. This dataset was processed using older standards which may not align with international best practices and the standards currently adhered to by the Department of Forestry, Fisheries and the Environment (DFFE). The Department is re-processing and replacing data to ensure everything has the same format and is of the same quality and datasets will be marked as obsoleted once that is done. As such the user assumes the entire risk related to the use of these data in its current state and format. DFFE disclaims all warranties of the data whether expressed or implied, including without limitation, any warranties of merchantability or fitness for a particular purpose....

212 datasets found Page 8 of 9

Geographic extent

Temporal extent