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Tasmanian Slope Trophodynamics Study 1991-1993: Primary Productivity Data

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Created 13/01/2025

Updated 13/01/2025

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This record describes the primary productivity data collected as part of the 1991-1993 Tasmanian Slope Trophodynamics Study undertaken by CSIRO Division of Fisheries. Primary productivity measurements were taken on 4 cruises of FRV "Southern Surveyor" on three 60 km transects across the continental shelf to the south and south-east of Tasmania in July 1991 (cruise SS 02/91), February 1992 (cruise SS 01/92), November 1992 (cruise SS 04/92) and April 1993 (cruise SS 03/93). There were typically 5-6 primary productivity stations per transect per cruise. At each station, water samples were collected in Niskin bottles from 3 depths and primary productivity was determined using 14C incubation experiments at a range of 4 light intensities. An additional, mmore intensive experiment was conducted over a 24 hour period at one site using samples from 6 depths incubated at seven light intensities. From these data, P vs I (photosynthesis versus irradiance) parameters were calculated, in particular alpha (the slope of the P vs I curve) and P-max, the light-saturated rate of carbon fixation. These values were then used to model primary production in the water column on a diel, seasonal, and spatially varying basis.

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Title Tasmanian Slope Trophodynamics Study 1991-1993: Primary Productivity Data
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/a9f8f414-3a07-4860-9a82-6145f6adb62d
Contact Point
Atlantic Oceanographic and Meteorological Laboratory (AOML)
data-requests-hf@csiro.au
Reference Period 01/07/1991 - 01/04/1993
Geospatial Coverage {"type": "Polygon", "coordinates": [[[145.9, -45.0], [148.0, -45.0], [148.0, -43.7], [145.9, -43.7], [145.9, -45.0]]]}
Data Portal data.gov.au

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This dataset was originally found on data.gov.au "Tasmanian Slope Trophodynamics Study 1991-1993: Primary Productivity Data". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/tasmanian-slope-trophodynamics-study-1991-1993-primary-productivity-data2

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