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Microphytobenthos community production at Great Palm Island, Great Barrier Reef

Production of the microphytobenthos community on a nearshore coral reef in Cannon Bay, Great Palm Island was measured over 7 trips between February 1996 and February 1997.

Benthic microalgal production was measured in 4-chamber data logging respirometers placed to avoid Calianassa spp. mounds. The water within each chamber was flushed for 4 minutes every 26 minutes. Oxygen concentration within the chambers, in situ irradiance (PAR) and water temperature were recorded simultaneously at 1 minute intervals over at least 24 hours.

The effect of nutrients excreted by holothurians on productivity was measured during experiments run in December 1996 (2) and February 1997 (3). Two 4 chamber respirometers were deployed for each experiment, for a period of 24 hours. An individual Holothuria atra (wet weight 140 to 220 g) was enclosed in a cartridge filter housing attached to 4 of the 8 chambers. The water (containing ammonium excreted by the holothurian) was injected into the attached chamber during each flushing. For 4 of the experiments, duplicate water samples for ammonium analyses were taken from all chambers on 2-3 occasions, 5 minutes after a flushing interval ended.

To estimate microalgal biomass in sediments, 3 replicate samples of the upper 5 mm of sediment were collected under each chamber after completion of each respirometer deployment and the chlorophyll a concentration determined.

Data and Resources

Additional Info

Field Value
Title Microphytobenthos community production at Great Palm Island, Great Barrier Reef
Type Dataset
Language English
Licence Other
Data Status inactive
Update Frequency notPlanned
Landing Page https://data.gov.au/dataset/84e0970d-1f28-42f2-8b6f-44e8685168ef
Date Published 2017-06-24
Date Updated 2017-10-09
Contact Point
Australian Institute of Marine Science
Geospatial Coverage {"type": "Point", "coordinates": [146.583333, -18.683333]}
Jurisdiction Commonwealth of Australia
Data Portal Australian Institute of Marine Science CSW Harvester
Publisher/Agency Australian Institute of Marine Science
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