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Microphytobenthos community production at Great Palm Island, Great Barrier Reef

Created 24/06/2017

Updated 09/10/2017

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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.

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Title Microphytobenthos community production at Great Palm Island, Great Barrier Reef
Language English
Licence Other
Landing Page https://devweb.dga.links.com.au/data/dataset/84e0970d-1f28-42f2-8b6f-44e8685168ef
Contact Point
Australian Institute of Marine Science
adc@aims.gov.au
Geospatial Coverage {"type": "Point", "coordinates": [146.583333, -18.683333]}
Data Portal data.gov.au

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This dataset was originally found on data.gov.au "Microphytobenthos community production at Great Palm Island, Great Barrier Reef". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/microphytobenthos-community-production-at-great-palm-island-great-barrier-reef

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