Please note that this is a staging site.
887 datasets found Page 25 of 36
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 feeding behaviour and distribution of small hake; to investigate the feasibility of using carbon and nitrogen isotopes for tracing hake diet; to obtain coverage of chlorophyll-fluorescence distribution at the sea surface as part of an on going monitoring program; to investigate aspects of the feeding, dynamics and reproduction of zooplankton; to obtain information on the hydrology and currents on the West Coast; and to investigate vertical and horizontal distribution of hake south west of Cape Point...

DOI: 10.15493/DEA.MIMS.52072024
Processed CTD continuous observations from the West Coast Hake Biomass Survey on the Africana Voyage 100, February 1992

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 06 February and 03 March 1992, during voyage 100 on the FRS Africana, 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 during research and monitoring cruises between 1983 and 2000.

DOI: 10.15493/DEA.MIMS.50072024
Processed CTD discrete observations from the Agulhas Bank Boundary Processes cruise on the Africana Voyage 099, January 1992

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected between 07 and 28 January 1992, during voyage 099 on the FRS Africana, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of Southern Africa 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.

DOI: 10.15493/DEA.MIMS.48072024
Agulhas Bank Boundary Processes on the Africana Voyage 099, January 1992

The Agulhas Bank Boundary Processes was conducted on the Africana Voyage 099, from 07-28 January 1992. The objectives of the cruise were to study the entrainment/loss of biota (fish eggs, larvae and plankton) along the shelf and shelf-edge by currents. This was undertaken by means of Acoustic Doppler Current Profilers (ADCP; current) measurements, and regular collection of biota with a combined bongo/calVET net with u³; to estimate the flux of the Agulhas Current along two lines by means of Conductivity, Temperature, Depth (CTD) and Expendable Bathythermograph (XBT) sections, and ADCP measurements; identification of pulses in the Agulhas Current by means of remote sensing (on board) and possible additional CTD/XBT lines to those shown in the grid map. Also a similar study of major filaments on the West Coast; to contribute to studies on the Agulhas Current influence on the South East coast shelf regions, in particular a) the Algoa Bay ecosystem, and b) the St Francis Bay ecosystem...

DOI: 10.15493/DEA.MIMS.49072024
Processed CTD continuous observations from the Agulhas Bank Boundary Processes cruise on the Africana Voyage 099, January 1992

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 07 and 28 January 1992, during voyage 099 on the FRS Africana, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of Southern Africa 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.

DOI: 10.15493/DEA.MIMS.45072024
Pelagic Fish Biomass Survey on the Africana Voyage 097, November 1991

The Pelagic Fish Biomass Survey was conducted on the Africana Voyage 097 from 07 November to 03 December 1991. The objectives of the cruise were to estimate the biomass and population length structure of anchovy, pilchard, and round herring off South Africa by means of echo-integration and midwater trawling; to estimate anchovy biomass by means of the egg production method, and trial estimate pilchard 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 oceanographic variables on these; to collect biological data on reproduction, condition and diet of pelagic fish species; to determine phytoplankton biomass in the nanophytoplankton (<10 µm) and netphytoplankton (>10 µm) size-classes in surface waters; to obtain information on the distribution and abundance of meso-zooplankton; to estimate secondary production rates of adult copepods using the egg...

DOI: 10.15493/DEA.MIMS.47072024
Processed CTD discrete observations from the Pelagic Biomass Survey on the Africana Voyage 097, November 1991

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected between 07 November and 03 December 1991, during voyage 097 on the FRS Africana, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of Southern Africa, 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.

DOI: 10.15493/DEA.MIMS.46072024
Processed CTD continuous observations from the Pelagic Biomass Survey on the Africana Voyage 097, November 1991

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 07 November and 03 December 1991, during voyage 097 on the FRS Africana, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of Southern Africa, 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.

DOI: 10.15493/DEA.MIMS.44072024
Processed CTD discrete observations from the Horse Mackerel Hydroacoustic Pilot Survey on the Africana Voyage 096, October 1991

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected between 14 October and 28 October 1991, during voyage 096 on the FRS Africana, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of Southern Africa 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.

DOI: 10.15493/DEA.MIMS.42072024
Horse Mackerel Hydroacoustic Pilot Survey on the Africana Voyage 096, October 1991

The Horse Mackerel Hydroacoustic Pilot Survey was conducted on the Africana Voyage 096 from 14-28 October 1991. The objectives of the cruise were to test the feasibility of obtaining an acoustic estimate of adult horse mackerel; to assess the ability to determine target detectability, target identification and target strength; to obtain an estimate of horse mackerel abundance in a sub-region. The size of the sub-region were to be determined by the time available and on the results of the first two objectives; to collect biological data pertaining to horse mackerel; to measure currents by means of the Acoustic Doppler Current Profilers (ADCP) in order to: a) test for relationships between horse mackerel movement and near-surface and mid-water currents, and b) to add to the ADCP data base for the South East coast; to measure thermal and salinity structure of the water column using a Conductivity, Temperature, Depth (CTD), and measurement of basic biotic parameters; oxygen, nutrients...

DOI: 10.15493/DEA.MIMS.43072024
Processed CTD continuous observations from the Horse Mackerel Hydroacoustic Pilot Survey on the Africana Voyage 096, October 1991

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 14 and 28 October 1991, during voyage 096 on the FRS Africana, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of Southern Africa 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.

DOI: 10.15493/DEA.MIMS.23072024
Processed CTD discrete observations from the South Coast Demersal Biomass Survey on the Africana Voyage 095, September 1991

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected between 12 September and 03 October 1991, during voyage 095 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.22072024
Processed CTD continuous observations from the South Coast Demersal Biomass Survey on the Africana Voyage 095, September 1991

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 12 September and 03 October 1991, during voyage 095 on the 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.21072024
South Coast Demersal Biomass Survey on the Africana Voyage 095, September 1991

The South Coast Demersal Biomass Survey on the Africana Voyage 095 was conducted on 12 September 1991 to 3 October 1991. The main objective of the survey was to conduct a random stratified bottom trawl survey to assess the biomass, abundance and distribution of hake, sole, horse mackerel, squid and other trawl species with emphasis on 'inshore' fishing areas for recruitment estimates; to investigate the hydrology and current profiles of the South Coast and to relate this to the distribution of the major demersal trawl species; this included five transects extending from specified areas on the South Coast and approximately perpendicular to the coastline out towards the mainstream of the Agulhas Current. A CTD grid in the Cape St Francis area was also done; to do a selected number of midwater trawls to test for the abundance of kingklip and hake and other demersal species as close as possible to the bottom and in midwater over grounds normally inaccessible to bottom trawl gear; to do...

DOI: 10.15493/DEA.MIMS.20072024
Processed CTD discrete observations from the South Coast Demersal Biomass Survey on the Africana voyage 093, June 1991

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected between 07 June and 05 July 1991, during voyage 093 on the 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.19072024
Processed CTD continuous observations from the South Coast Demersal Biomass Survey on the Africana Voyage 093, June 1991

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 07 June and 05 July 1991, during voyage 093 on the 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.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 environment and to recruit distribution and condition; an examination of feeding ecology and food selection of pilchard recruits; an investigation of the vertical distribution and behaviour of feeding juvenile hake in relation to their food environment; an examination of the feasibility of mackerel collecting live horse with the midwater trawl, and of keeping them alive on board and the retrieval of a current meter mooring off Hondeklip Bay.

DOI: 10.15493/DEA.MIMS.17072024
Processed CTD discrete observations from the Anchovy Recruitment Survey on the Africana Voyage 092, May 1991

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected between 07 May and 24 May 1991, during voyage 092 on the Africana, 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 during research and monitoring cruises between 1983 and 2000.

DOI: 10.15493/DEA.MIMS.16072024
Processed CTD continuous observations from the Anchovy Recruitment Survey on the Africana Voyage 092, May 1991

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 07 May and 24 May 1991, during voyage 092 on the Africana, 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 during research and monitoring cruises between 1983 and 2000.

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 echo-integration and midwater trawling; to investigate the behaviour of pelagic pre-recruit fish in relation to oceanographic variables; get a collection of biological material for age, oil content, diet and condition studies on pelagic pre-recruits; to determine oxygen concentrations in rock lobster distribution areas; the profiling of currents by means of the acoustic doppler current profiler; and testing the feasibility of the acoustic assessment of juvenile hake.

DOI: 10.15493/DEA.MIMS.38072024
Processed CTD discrete observations from the Pelagic Pre-Recruit Mesopelagic Biomass Survey on the Africana Voyage 090, March 1991

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected between 05 and 19 March 1991, during voyage 090 on the FRS Africana, 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 during research and monitoring cruises between 1983 and 2000.

DOI: 10.15493/DEA.MIMS.37072024
Processed CTD continuous observations from the Pelagic Pre-Recruit Mesopelagic Biomass Survey on the Africana Voyage 090, March 1991

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 05 and 19 March 1991, during voyage 090 on the FRS Africana, 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 during research and monitoring cruises between 1983 and 2000.

DOI: 10.15493/DEA.MIMS.33072024
Plankton Dynamics on the Africana Voyage 089, February 1991

The Plankton Dynamics cruise on the Africana Voyage 089 was conducted from 12-23 February 1991. The objectives of the cruise were to complete a summer transect to provide information on zooplankton vertical migration patterns during the period of maximum upwelling; to contrast hydrological and planktological conditions across the shelf just north of the Columbine divergence, at a time when pelagic fish larvae transported in the jet current were crossing the shelf to the nursery area; to measure rates of primary and secondary production in different size classes of planktonic organisms at offshore (shelf-break), mid shelf and inshore locations; to examine the influence of recent feeding history on the condition of pre-recruit pelagic fish; to measure time-dependent fluctuations in the currents using the acoustic doppler current profiler; and to make measurements of nitrogen dynamics within the planktonic community.

DOI: 10.15493/DEA.MIMS.35072024
Processed CTD discrete observations from the Plankton Dynamics on the Africana Voyage 089, February 1991

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected between 12 and 23 February 1991, during voyage 089 on the FRS Africana, 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 during research and monitoring cruises between 1983 and 2000.

DOI: 10.15493/DEA.MIMS.34072024
Processed CTD continuous observations from the Plankton Dynamics on the Africana Voyage 089, February 1991

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 12 and 23 February 1991, during voyage 089 on the FRS Africana, 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 during research and monitoring cruises between 1983 and 2000.

887 datasets found Page 25 of 36

Geographic extent

Temporal extent