739 datasets found Page 11 of 30
DOI: 10.15493/dea.mims.26052247
African Coelacanth Ecosystem Programme (ACEP) from Algoa Voyage 176, January 2010

The Algoa sailed from Durban on 22 January 2010 to conduct a hydrographic survey of the Natal Bight as part of the African Coelacanth Ecosystem Programme (ACEP) II. A total of 16 shore-normal transects were occupied between Scottburgh and St. Lucia.The sampling locations are indicated in Figure 1 of the Cruise Report. The aim of the synoptic survey was to determine the nutrient sources of the Natal Bight ecosystem, and to characterise the focus sites across the Bight. Unfortunately, due to instrument failure, a planned ADCP transect between St. Lucia and Durban could not be completed.

(No DOI)
Raw CTD data from the Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on the Algoa Voyage 209, August 2014

This is raw Conductivity, Temperature, Depth (CTD) data from the Integrated Ecosystem Programme: Southern Benguela on the Algoa Voyage 209, 5 to 15 August, 2014. The Integrated Ecosystem Programme: Southern Benguela (IEP:SB) 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. 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,...

DOI: 10.15493/dea.mims.26052224
Walters Shoal Cruise on Algoa Voyage 207, May 2014

The Walters Shoal Cruise was conducted on the 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)
No Download
Raw TSG data from the West Coast Cetacean Distribution and Abundance Survey on the Algoa Voyage 219, October 2015

This is raw Thermosalinograph (TSG) data from the West Coast Cetacean Distribution and Abundance Survey on the Algoa Voyage 219, 28 October to 06 November 2015. The cruise operated on the shelf and slope regions off the west coast of South Africa, between Dassen Island and Groenriviermond.This cruise was undertaken for data collection as part of a collaborative project led by the Department of Environmental Affairs (DEA) in collaboration with the Whale Unit, Mammal Research Institute of the University of Pretoria, Department of Agriculture, Forestry and Fisheries (DAFF), National Oceanic and Atmospheric Administration (USA), Aqualie Institute (Brazil) and Oregon State University (USA). The greater programme is titled "The ecology of Humpback whales Megaptera novaeangliae in South Africa" and has two components, the east coast and west coast components. This cruise focused on the west coast humpback whales.

DOI: 10.15493/dea.mims.25010004
Processed underway Thermosalinograph (TSG) observations from SA Agulhas II Voyage 029, December 2017

A SeaBird SBE45 Thermosalinograph (TSG) is used to opportunistically collect underway near-surface temperature and conductivity measurements during research and monitoring cruises. Water is continuously pumped to the TSG from an intake located in the hull of the vessel, and the observations are continuously interfaced with navigational information. A temperature sensor close to the intake provides temperature measurements of the incoming water (T1). The temperature of the water inside the conductivity cell (T2) is used to accurately compute salinity (S) from the conductivity measurements (C). Here we present the 6-second resolution processed TSG data collected, between 08 December 2017 and 13 February 2018, during Voyage 029 on the SA Agulhas II.

(No DOI)
Raw SADCP data from the St Helena Bay Monitoring Line (SHBML) on the Algoa Voyage 194, February 2013

This is raw Shipboard Acoustic Doppler Current Profiler (SADCP) data from the St Helena Bay Monitoring Line February 2013 cruise (now under the Integrated Ecosystem Programme: Southern Benguela). The St Helena Bay Monitoring Line was initiated as a BENEFIT-driven project on "shipboard monitoring" which linked with similar lines run in Namibia and Angola. The aims are to obtain seasonal and interannual information on the hydrology and productivity of the area. Data on harmful algal blooms, low oxygen water and intrusions of Agulhas Bank water along the west coast will also be collected. A long-term, multi-decadel time-series (from 1951 onward) of information already exists for this important region and has continued in the form of the IEP:SB to detect long-term changes in the hydrology and the plankton, which are important for the detection of regime shifts.

(No DOI)
Raw chlorophyll a data from the Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on the Algoa Voyage 202, September 2013

This is raw chlorophyll a data from Niskin Bottles from the Integrated Ecosystem Programme: Southern Benguela on the Algoa Voyage 202, 9 to 19 September, 2013.This was the pilot cruise for the IEP:SB for site determination and gear testing.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.

(No DOI)
Raw SADCP data from the Integrated Ecosystem Programme cruise: Southern Benguela (IEP:SB) on the Algoa Voyage 232, November 2016

This is raw Shipboard Acoustic Doppler Current Profiler (SADCP) data from the Integrated Ecosystem Programme (IEP) cruise: Southern Benguela on the Algoa V232, 15 - 26 November, 2016. The Integrated Ecosystem Programme 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.23042026
South Coast Demersal Biomass Survey on the Africana Voyage 131, September 1995

The South Coast Demersal Biomass Survey was conducted on the Africana Voyage 131 from 28 September to 20 October 1995. 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 up to 200m, but biased in terms of number of stations in depths up to 120m; 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 and approximately perpendicular to the coastline out towards the main stream of the Agulhas Current; to do a selected number of deep bottom trawls, if time allows, to investigate the distribution and abundance of deepwater fauna; to conduct routine biological and length frequency sampling of demersal species; to sample squid intensively to establish their...

(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)
SDS data from the South Coast Mooring Cruise on the Algoa Voyage 208, July 2014

This is Scientific Data System (SDS) 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...

DOI: 10.15493/dea.mims.20210415
Processed underway Thermosalinograph (TSG) observations from SA Agulhas II Voyage 024, April 2017

A SeaBird SBE45 Thermosalinograph (TSG) is used to opportunistically collect underway near-surface temperature and conductivity measurements during research and monitoring cruises. Water is continuously pumped to the TSG from an intake located in the hull of the vessel, and the observations are continuously interfaced with navigational information. A temperature sensor close to the intake provides temperature measurements of the incoming water (T1). The temperature of the water inside the conductivity cell (T2) is used to accurately compute salinity (S) from the conductivity measurements (C). Here we present the 6-second resolution processed TSG data collected between 08 April 2017 and 12 May 2017, during Voyage 024 on the SA Agulhas II.

(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 Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on the Algoa Voyage 202, September 2013

This is raw ship mounted ADCP data from the Integrated Ecosystem Programme: Southern Benguela on the Algoa Voyage 202, 9 to 19 September, 2013. This was the pilot cruise for the IEP:SB for site determination and gear testing.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.24042026
Processed CTD continuous observations from the South Coast Demersal Biomass Survey on the Africana Voyage 131, September 1995

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data 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. Any additional calibrations or corrections have been specified in each data file, where applicable and available.

DOI: 10.15493/DEA.MIMS.15052023
Anchovy and Pilchard Recruitment Survey on the Africana Voyage 121, May 1994

The Anchovy and Pilchard Recruitment Survey was conducted on the Africana Voyage 121 from 3 to 27 May 1994. The cruise objectives included an estimation of the abundance and size-structure of anchovy and pilchard recruits, a description of distribution and behaviour patterns of anchovy and pilchard recruits and the influence of oceanographic variables on these, the collection of biological data on pelagic fish species and an examination of the distribution and abundance of plankton in relation to the environment and to recruit distribution and condition.

(No DOI)
No Download
Raw SPAR data from the West Coast Cetacean Distribution and Abundance Survey on the Algoa Voyage 211, October 2014

This is raw Surface Photosynthetically Active Radiation (SPAR) data collected on the West Coast Cetacean Distribution and Abundance Survey on the Algoa Voyage 211, 28 October to 10 November 2014. The cruise operated on the shelf and slope regions off the West Coast of South Africa, between Dassen Island and Groenriviermond.The major objective of this cruise was to survey the abundance and distribution of cetaceans, in particular humpback whales, within the study area on the west coast. This objective, along with the research aims and proposed methodologies, are consistent with internationally accepted protocols. This work provided hands-on experience with logistical and technical cetacean specific problems associated with dedicated cetacean cruises. This work was a collaboration with the Mammal Research Institute, University of Pretoria, and the Department of Agriculture, Fisheries and Forestry.

DOI: 10.15493/DEA.MIMS.47112024
Processed CTD continuous observations from the Current Meter and Sediment Trap Recovery Shelf Chemistry on the Africana Voyage 114, June 1993

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected, between 21 June and 30 June 1993, during the Current Meter and Sediment Trap Recovery Shelf Chemistry on the Africana Voyage 114, 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.21112022
Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on the Algoa Voyage 279, February 2022

This Integrated Ecosystem Programme: Southern Benguela (IEP:SB) cruise was conducted on the Algoa Voyage 279 in February 2022. 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.26052267
Marion Island Relief Voyage on the SA Agulhas II Voyage 030, April 2018

The Marion Island Relief Voyage was conducted on the SA Agulhas II Voyage 030 from 13 April to 28 April 2018. The 2018 Marion Relief Voyage 030 offered the 6th opportunity to conduct multi-disciplinary, shipbased marine research focusing on links and interactions between air and sea, ocean physics, chemistry, biogeochemistry and biology, including microbial and planktic communities on board South Africa’s polar research and supply vessel MV SA Agulhas II en route to, and around, the sub-Antarctic Prince Edward archipelago. The overall aim was to continue contributing to an oceanographic observation and monitoring system directed by South African research institutions in support of South Africa’s needs – and where possible, in support of global requirements of inter alia the Global Oceans Observing System (GOOS), the Southern Ocean Observing System (SOOS), the Convention for the Conservation of Antarctic Marine Living Resources (CCAMLR), and the Agreement on the Conservation of...

(No DOI)
Raw SDS data from the Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on the Algoa Voyage 205, February 2014

This is raw Scientific Data System (SDS) data from the Integrated Ecosystem Programme: Southern Benguela on the Algoa Voyage 205, 03 to 22 February, 2014. 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.

(No DOI)
Raw Shipboard ADCP data from the Moorings and Monitoring Lines Cruise: Cape Point and Port St Johns on the Algoa Voyage 204, November 2013

This is raw shipboard ADCP data from the Moorings and Monitoring Lines Cruise: Cape Point and Port St Johns on the Algoa Voyage 204, 25 November to 6 December, 2013. 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.

(No DOI)
Raw Shipboard ADCP data from the Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on the Algoa Voyage 205, February 2014

This is raw Shipboard Acoustic Doppler Current Profiler (SADCP) data from the Integrated Ecosystem Programme: Southern Benguela on the Algoa Voyage 205, 03 to 22 February, 2014. 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.

(No DOI)
Raw SPAR data from the Mooring Cruise on the Algoa Voyage 199, June 2013

This is raw Surface Photosynthetically Active Radiation (SPAR) data from the Mooring Cruise on the Algoa Voyage 199 from 29 June - 3 July, 2013. The area covered includes Slangkop, off of Cape Town, Western Cape, South Africa to Port Edward, south of Durban, KwaZulu-Natal, South Africa.

DOI: 10.15493/DEA.MIMS.19112022
Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on the Algoa Voyage 274, August 2021

This Integrated Ecosystem Programme: Southern Benguela (IEP:SB) cruise was conducted on the Algoa Voyage 274 in August 2021. 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...

739 datasets found Page 11 of 30

Geographic extent

Temporal extent