Dataset

The Measurement of Seagrass Photosynthesis Using PAM Fluorometry - Seasonal variation in the photosynthetic rates

Australian Ocean Data Network
Horn, Lotte, Dr
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://catalogue.aodn.org.au/geonetwork/srv/en/metadata.show?uuid=cfb4d560-4a31-11dc-85e1-00188b4c0af8&rft.title=The Measurement of Seagrass Photosynthesis Using PAM Fluorometry - Seasonal variation in the photosynthetic rates&rft.identifier=https://catalogue.aodn.org.au/geonetwork/srv/en/metadata.show?uuid=cfb4d560-4a31-11dc-85e1-00188b4c0af8&rft.publisher=Australian Ocean Data Network&rft.description=The study aims to determine the seasonal photosynthetic variation in Posidonia sinuosa, Posidonia australis and Halophila ovalis. Sampling was conducted in in-situ seagrasses over eight months, from spring 2004 to autumn 2004 at Woodman Point, Western Australia.- Chlorophyll fluorescence measurements - Measurements were made on seven occasions from 10 October 2003 to 27 May 2004, between 0730 and 1130 h. Measurements were not carried out in winter due to frequency of storms. Chlorophyll fluorescence measurements were carried out as described in section 2.2.2.1 of the thesis. Rapid light curvers (RLCs) were measured at the base of rank two (second youngest) Posidonia leaves (40 - 60 mm from the leaf sheath) and at the centre of the blade of Halophila leaves. None of the leaves carried visible epiphytic growth. Leaves were shaded from ambient light during the measurement of RLCs. Ambient irradiances were recorded from within the canopy at the location where RLC measurements were made. Absorptance factors used in this study were 0.64 for P. sinuosa, 0.59 for P. australis and 0.55 for H. ovalis, as calculated in section 2.2.1. of thesis. The number of replicates for each measurement varied between 5 and 24.&rft.creator=Horn, Lotte, Dr &rft.date=2007&rft.coverage=northlimit=-32.12; southlimit=-32.29; westlimit=115.65; eastLimit=115.78&rft.coverage=northlimit=-32.12; southlimit=-32.29; westlimit=115.65; eastLimit=115.78&rft_rights=Photographs in thumbnail are not to be used without author's permission&rft_subject=oceans&rft_subject=Oceans | Marine Biology | Marine Plants&rft_subject=PHOTOSYNTHESIS&rft_subject=EARTH SCIENCE&rft_subject=BIOSPHERE&rft_subject=ECOLOGICAL DYNAMICS&rft_subject=ECOSYSTEM FUNCTIONS&rft_subject=Seagrass&rft_subject=Posidonia australis&rft_subject=63 617002&rft_subject=Posidonia sinuosa&rft_subject=63 617003&rft_subject=Halophila ovalis&rft_subject=63 605002&rft_subject=chlorophyll fluorescence&rft.type=dataset&rft.language=English Access the data

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The study aims to determine the seasonal photosynthetic variation in Posidonia sinuosa, Posidonia australis and Halophila ovalis. Sampling was conducted in in-situ seagrasses over eight months, from spring 2004 to autumn 2004 at Woodman Point, Western Australia.

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- Chlorophyll fluorescence measurements -

Measurements were made on seven occasions from 10 October 2003 to 27 May 2004, between 0730 and 1130 h. Measurements were not carried out in winter due to frequency of storms. Chlorophyll fluorescence measurements were carried out as described in section 2.2.2.1 of the thesis.

Rapid light curvers (RLCs) were measured at the base of rank two (second youngest) Posidonia leaves (40 - 60 mm from the leaf sheath) and at the centre of the blade of Halophila leaves. None of the leaves carried visible epiphytic growth. Leaves were shaded from ambient light during the measurement of RLCs. Ambient irradiances were recorded from within the canopy at the location where RLC measurements were made. Absorptance factors used in this study were 0.64 for P. sinuosa, 0.59 for P. australis and 0.55 for H. ovalis, as calculated in section 2.2.1. of thesis. The number of replicates for each measurement varied between 5 and 24.

Created: 10 08 2007

Data time period: 2003-10-10 to 2004-05-27

115.78,-32.12 115.78,-32.29 115.65,-32.29 115.65,-32.12 115.78,-32.12

115.715,-32.205

text: northlimit=-32.12; southlimit=-32.29; westlimit=115.65; eastLimit=115.78

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