TemperateReefBase Geonetwork Catalogue
A Survey of the Macrocystis pyrifera (L.) C. Agardh Stocks on the East Coast of Tasmania, 1986
A survey of the east Tasmanian coastline from Musselroe Bay to South East Cape revealed a total of 10 km2 of Macrocystis pyrifera (Linnaeus) C. Agardh 1820 kelp forest. Average harvestable quantities based on Alginates (Australia) Company records (1965-72) show that cropping can expect to yield 5 ton/acre or 1.23 kg/m2. This realizes a total of 12,300 tonne available on the East Coast of Tasmania in 1986. Review of past records show fluctuations in total amounts harvested, due possibly to factors such as high oceanic water temperatures with subsequent low nutrient concentrations and storm damage.
The survey was conducted from a light aeroplane. Areas of Macrocystis pyrifera beds were marked on 1:100,000 topographical land tenure maps using landmarks as references. Digitising of bed outlines on maps was done using Mapinfo.
Weight of Macrocystis per unit area is also estimated from quadrats harvested at a number of sites along the coast.
Simple
Identification info
- Date (Creation)
- 2001-04-12
- Date (Revision)
- 2001-04-12T00:00:00
- Status
- Completed
Point of contact
- Spatial representation type
- Vector
- Topic category
-
- Biota
Extent
))
Temporal extent
- Time period
- 1986-06-01 1986-06-30
- Keywords (Taxon)
-
- Macrocystis pyrifera
- Keywords (Theme)
-
- ECOLOGY Community
- ECOLOGY Habitat
- ECOLOGY Ecosystem
- FISHERIES Marine
- FLORA Native
- MARINE Biology
- MARINE Coasts
- MARINE Reefs
- VEGETATION Floristic
- VEGETATION Structural
- Global Change Master Directory (GCMD) Earth Science Keywords Version 8.0
- Australian and New Zealand Standard Research Classification (ANZSRC): Fields of Research
- Keywords (Discipline)
-
- Temperate Reef
- AODN Platform Vocabulary
- AODN Discovery Parameter Vocabulary
Resource constraints
- Classification
- Unclassified
Resource constraints
- Linkage
-
http://i.creativecommons.org/l/by/3.0/au/88x31.png
License Graphic
- Title
- Creative Commons Attribution 3.0 Australia License
- Website
-
http://creativecommons.org/licenses/by/3.0/au/
License Text
- Other constraints
- 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).
- Language
- English
- Character encoding
- UTF8
Content Information
- Content type
- Physical measurement
- Description
- Presence of Macrocystis surface canopy
Identifier
Distribution Information
- OnLine resource
-
SHAPE-ZIP
DATA ACCESS - Macrocystis areal extent (aerial surveys) 1986 in Shapefile format
- OnLine resource
-
imas:Macrocystis_areal_extent_1986
MAP - Macrocystis areal extent (aerial surveys) 1986
- OnLine resource
- View Dataset in ListMap
- OnLine resource
- View Metadata in ListData
Resource lineage
- Statement
- Data presented is taken from original 1:100000 maps used in the survey as described above.
- Hierarchy level
- Dataset
- Description
- Position Accuracy: There is most inaccuracy in the width of the beds, this is probably +/- 20%. Length of the beds along the coasts is accurate to within +/-5%. Macrocystis present on the surface of the ocean is assumed to reflect overall quantities of the alga and distribution. Some areas may have been overlooked where the alga did not reach the surface due to tides or plants in poor condition etc. Attribute Accuracy: Accuracy of weight of Macrocystis per unit area is liekly to be +/- 25 %. Logical Consistency: Complete for the east coast of Tasmania in 1986. No estimate of the areas that were not likely to have been detected from the aeroplane.as fronds were below the water surface. Completeness: Complete for the east coast of Tasmania in 1986. No estimate of the areas that were not likely to have been detected from the aeroplane.as fronds were below the water surface Additional: Sanderson JC 1987 A Survey of the Macrocystis pyrifera (L.) C. Agardh Stocks on the East Coast of Tasmania. Dept. Sea Fish. Tech. Rep. 21, 11 pp.
- Hierarchy level
- Dataset
Platform
Identifier
- Code
- research aeroplane
Metadata
- Metadata identifier
- 3adc02df-cbaf-4d9f-a246-74a21b367849
- Language
- English
- Character encoding
- UTF8
Point of contact
- Parent metadata
Type of resource
- Resource scope
- Dataset
- Metadata linkage
-
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/3adc02df-cbaf-4d9f-a246-74a21b367849
Point of truth URL of this metadata record
- Date info (Creation)
- 2020-10-07T15:28:17
- Date info (Revision)
- 2020-10-07T15:28:17
Metadata standard
- Title
- ISO 19115-3:2018
Overviews
Spatial extent
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