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Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) (822) ✕

822 datasets found Page 24 of 33
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.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.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.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.

DOI: 10.15493/DEA.MIMS.32072024
Processed CTD discrete observations from the West Coast Hake Biomass Survey on the Africana Voyage 088, January 1991

Here we present processed CTD discrete data from the upcast collected between 07 and 29 January 1991, during voyage 088 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 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.

DOI: 10.15493/DEA.MIMS.30072024
West Coast Hake Biomass Survey on the Africana Voyage 088, January 1991

The West Coast Hake Biomass Survey was conducted on the Africana Voyage 088 from 07-29 January 1991. 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 investigate the possible recovery of the stocks of West Coast Sole; to study the biology of chondrichthyan species; to collect material for the electrophoretic comparison of the southern African kingklip, Genypterus capensis, with the Australian G. blacodes and G. microstomus and the South American G. blacodes and G. chilensis; to investigate zooplankton scattering layers and their influence on the feeding behaviour and distribution of small hake; training of Oceanographic Research Assistants; to investigate the feasibility of using carbon and nitrogen isotopes for tracing hake diet; to obtain coverage of...

DOI: 10.15493/DEA.MIMS.31072024
Processed CTD continuous observations from the West Coast Hake Biomass Survey on the Africana Voyage 088, January 1991

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 07 and 29 January 1991, during voyage 088 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.09122024
South Coast Demersal Biomass Survey on the Africana Voyage 086, September 1990

South Coast Demersal Biomass Survey was conducted on the Africana Voyage 086 from 07 September - 02 October 1990. The objectives of the cruise were to survey by means of bottom trawling (under 200 m) the abundance and distribution of adult and juvenile hake, sole, squid, horse mackerel and other demersal target species and to make biomass estimates of each; to study the hydrological environment using the CTD and ADCP and to relate this information to the catches of hake , sole, squid, horse mackerel and other trawl species. The investigation included hydrological transects off the Eastern Cape Coast from inside the bay areas outwards to the shelf -break or main Agulhas stream; a pilot survey using a Calvet net to investigate the feasibility of determining sole egg distribution for the egg production technique; data on the eggs and larvae of other species were also collected. A study was also conducted on demersal community relationships, particularly of chondrichthyians and...

DOI: 10.15493/DEA.MIMS.14122024
Processed CTD discrete observations from the South Coast Demersal Biomass Survey on the Africana Voyage 086, September 1990

Here we present processed CTD discrete data from the upcast collected, between 07 September and 02 October 1990, during the South Coast Demersal Biomass Survey on the Africana Voyage 086 in the Agulhas Current Large Marine Ecosystem (ACLME) region on the south coast of Southern Africa. Neil Brown MK3 and MK4 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.

DOI: 10.15493/DEA.MIMS.13122024
Processed CTD continuous observations from the South Coast Demersal Biomass Survey on the Africana Voyage 086, September 1990

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected, between 07 September and 02 October 1990, during the South Coast Demersal Biomass Survey on the Africana Voyage 086, 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.12122024
Processed CTD discrete observations from the Physical-Chemical Oceanography on the Africana Voyage 085, August 1990

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected, between 16 August and 29 August 1990, during the Physical-Chemical Oceanography on the Africana Voyage 085, 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.10122024
Processed CTD continuous observations from the Physical-Chemical Oceanography on the Africana Voyage 085, August 1990

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected, between 16 August and 29 August 1990, during the Physical-Chemical Oceanography on the Africana Voyage 085 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.26072024
Processed CTD discrete observations from the West Coast Hake Biomass Survey on the Africana Voyage 084, July 1990

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected between 12 July and 06 August 1990, during voyage 084 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.24072024
West Coast Hake Biomass Survey on the Africana Voyage 084, July 1990

The West Coast Hake Biomass Survey was conducted on the Africana Voyage 084 from 12 July - 06 August 1990. The objectives of the cruise were to survey by means of trawling the abundance of adult and recruiting hake in South African waters; to investigate diurnal cycle of hake and other demersal species; to investigate the environmental and ecological interrelationships of hake and other demersal species; to investigate the occurrence, distribution, and abundance of squid; to study the biology of chondrichthyan species; to investigate zooplankton scattering layers and their influence on the feeding and distribution of small hake; to investigate the feasibility of using carbon and nitrogen isotopes for tracing hake diet; to obtain extensive coverage of chlorophyll-fluorescence distribution at the sea surface as part of an ongoing monitoring program; to collect live chaetognaths and medusae for gut evacuation and feeding experiments, and for gut content analysis; and lastly to train...

DOI: 10.15493/DEA.MIMS.25072024
Processed CTD continuous observations from the West Coast Hake Biomass Survey on the Africana Voyage 084, July 1990

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 12 July and 06 August 1990, during voyage 084 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.

822 datasets found Page 24 of 33

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Temporal extent