Data

Ecological studies on seagrasses of SW Australia - Cockburn Sound - Past Distribution

Australian Ocean Data Network
Cambridge, Marion, Dr
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
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:443/geonetwork/srv/api/records/e9842830-2f4a-11dc-a71c-00188b4c0af8&rft.title=Ecological studies on seagrasses of SW Australia - Cockburn Sound - Past Distribution&rft.identifier=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/e9842830-2f4a-11dc-a71c-00188b4c0af8&rft.description=Data was collected from Cockburn Sound to determine the past and present distribution of seagrasses, including sediment cores.Maintenance and Update Frequency: notPlannedStatement: Aerial photographs from 1954 were interpreted with the aid of ground truthing from SCUBA surveys to determine stages of deterioration ranging from continous meadow, through the development of patchiness to the final bare substrate. The photographs were overlain with grids and area of seagrass was calculated and converted into hectares. In addition to the photo interpretation, an investigation of fibre deposits was made for evidence of the existance of Posidonia meadows on the Eastern Shore of Cockburn Sound between James Point and Woodman Point, an area too far offshore to be included in coastal photographic mosaic. Replicate cores of 3 cm diameter and 50 cm depth were taken on the Eastern Shelf (see thumbnail). Fibrous remains of rhizomes covered by varying depths of sand indicated the presence of teh old seagrass meadow.&rft.creator=Cambridge, Marion, Dr &rft.date=2007&rft.coverage=westlimit=115.6; southlimit=-32.4; eastlimit=115.75; northlimit=-32.05&rft.coverage=westlimit=115.6; southlimit=-32.4; eastlimit=115.75; northlimit=-32.05&rft.coverage=uplimit=10; downlimit=5&rft.coverage=uplimit=10; downlimit=5&rft_rights=Creative Commons Attribution 2.5 Australia License http://creativecommons.org/licenses/by/2.5/au/&rft_rights=The citation in a list of references is: citation author name/s (year metadata published), metadata title. Citation author organisation/s. File identifier and Data accessed at (add http link).&rft_rights=Please contact M. Cambridge for access to the data.&rft_subject=oceans&rft_subject=Oceans | Marine Biology | Marine Plants&rft_subject=RANGE CHANGES&rft_subject=EARTH SCIENCE&rft_subject=BIOSPHERE&rft_subject=ECOLOGICAL DYNAMICS&rft_subject=SPECIES/POPULATION INTERACTIONS&rft_subject=BENTHIC HABITAT&rft_subject=AQUATIC ECOSYSTEMS&rft_subject=SEDIMENTATION&rft_subject=OCEANS&rft_subject=MARINE SEDIMENTS&rft.type=dataset&rft.language=English Access the data
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CC-BY

Creative Commons Attribution 2.5 Australia License
http://creativecommons.org/licenses/by/2.5/au/

The citation in a list of references is: citation author name/s (year metadata published), metadata title. Citation author organisation/s. File identifier and Data accessed at (add http link).

Please contact M. Cambridge for access to the data.

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Brief description

Data was collected from Cockburn Sound to determine the past and present distribution of seagrasses, including sediment cores.

Lineage

Maintenance and Update Frequency: notPlanned
Statement: Aerial photographs from 1954 were interpreted with the aid of ground truthing from SCUBA surveys to determine stages of deterioration ranging from continous meadow, through the development of patchiness to the final bare substrate. The photographs were overlain with grids and area of seagrass was calculated and converted into hectares. In addition to the photo interpretation, an investigation of fibre deposits was made for evidence of the existance of Posidonia meadows on the Eastern Shore of Cockburn Sound between James Point and Woodman Point, an area too far offshore to be included in coastal photographic mosaic. Replicate cores of 3 cm diameter and 50 cm depth were taken on the Eastern Shelf (see thumbnail). Fibrous remains of rhizomes covered by varying depths of sand indicated the presence of teh old seagrass meadow.

Notes

Credit
Department of Conservation and Environment, Cockburn Sound Study Group

Created: 11 07 2007

Data time period: 1977-01 to 1979-03

This dataset is part of a larger collection

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115.75,-32.05 115.75,-32.4 115.6,-32.4 115.6,-32.05 115.75,-32.05

115.675,-32.225

text: westlimit=115.6; southlimit=-32.4; eastlimit=115.75; northlimit=-32.05

text: uplimit=10; downlimit=5

Subjects
AQUATIC ECOSYSTEMS | Benthic Habitat | BIOSPHERE | EARTH SCIENCE | ECOLOGICAL DYNAMICS | MARINE SEDIMENTS | OCEANS | Oceans | Marine Biology | Marine Plants | Range Changes | Sedimentation | SPECIES/POPULATION INTERACTIONS | oceans |

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global : 07eaf2f0-2aa9-11dc-8881-00188b4c0af8

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  • global : e9842830-2f4a-11dc-a71c-00188b4c0af8
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