Name: Processed imagery data collected off the western margin's deep-sea environment on Algoa Voyage 246, February 2018
License: https://repository.saeon.ac.za/index.php/s/PzfgExZEQ3ysGKK

DOI: 10.15493/DEA.MIMS.05092022

Title	Processed imagery data collected off the western margin's deep-sea environment on Algoa Voyage 246, February 2018
Authors	Zoleka Filander Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Scientist 2nd Floor, Foretrust Building, Martin Hammerschlag Way, Cape Town, South Africa, email: zfilander@dffe.gov.za Lara Atkinson Egagasini Offshore Node, South African Environmental Observations Network Scientist 5th Floor, Foretrust Building, 1 Martin Hammerschlag Way, Cape Town, South Africa, email: lj.atkinson@saeon.nrf.ac.za Donia Wozniak Egagasini Offshore Node, South African Environmental Observations Network Intern 5th Floor, Foretrust Building, 1 Martin Hammerschlag Way, Cape Town, South Africa Laurenne Snyders Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Scientific Technician 2nd Floor, Foretrust Building, Martin Hammerschlag Way, Cape Town, South Africa, email: lsnyders@dffe.gov.za
Publisher	Department of Forestry, Fisheries and the Environment (2022)
Contributors	Contact Person: Zoleka Filander Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Scientist 2nd Floor, Foretrust Building, Martin Hammerschlag Way, Cape Town, South Africa, email: zfilander@dffe.gov.za Project Member: Lara Atkinson Egagasini Offshore Node, South African Environmental Observations Network Scientist 5th Floor, Foretrust Building, 1 Martin Hammerschlag Way, Cape Town, South Africa, email: lj.atkinson@saeon.nrf.ac.za Project Member: Donia Wozniak Egagasini Offshore Node, South African Environmental Observations Network Intern 5th Floor, Foretrust Building, 1 Martin Hammerschlag Way, Cape Town, South Africa Project Member: Laurenne Snyders Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Scientific Technician 2nd Floor, Foretrust Building, Martin Hammerschlag Way, Cape Town, South Africa, email: lsnyders@dffe.gov.za
Abstract	The aim of the Integrated Ecosystem Program (IEP) Benthic Project is to establish a baseline for epi-benthic invertebrate distribution, in order to identify benthic indicators for long-term monitoring within the pre-determined IEP monitoring lines. Ten stations were successfully surveyed, on board the R/V Algoa in February 2018, using a towed under-water benthic camera. The acquired abundance data represents five stations from the Kleinsee transect, four from Namaqua and one from St Helena Bay.
Methods	Only clear, in-focus images of the seabed, with three laser points visible, were processed using TransectMeasure (http://www.seagis.com.au/). Species were therefore identified, counted, and area quantified with a laser calibration file generated using CAL software (http://www.seagis.com.au/). Species per area was standardised.
Data	Embargoed Cite 10.15493/DEA.MIMS.05092022 Style Terms of use These data are made available with the express understanding that any such use will properly acknowledge the originator(s) and publisher and cite the accession numbers and/or associated Digital Object Identifiers. Anyone wishing to use these data should properly cite and attribute the data providers listed as authors in the metadata provided with each dataset. It is expected that all the conditions of the data license will be strictly honoured. Use of any material herein should be properly cited using the dataset’s persistent identifiers such as accession numbers and DOIs. I agree to the terms of use
Temporal extent	14 Feb 2018 – 22 Feb 2018
Geographic extent	West Coast, South Africa North: -29.446 South: -32.74 West: 14.706 East: 16.427
Vertical extent	Max: -230.0 m Min: -430.0 m
Keywords	Algoa, Algoa 246, SOUTH ATLANTIC OCEAN, upwelling system, western margin

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