A Survey of the Macrocystis pyrifera (L.) C. Agardh Stocks on the East Coast of Tasmania, 1999

A survey was conducted for Macrocystis pyrifera (Linnaeus) C. Agardh 1820 from Eddystone Point to South East Cape


The survey was conducted from light aeroplane. Areas of Macrocystis pyrifera beds were marked on 1:100,000 topographical land tenure maps using landmarks as references. A Trimble GPS unit was used to track position in the aeroplane. As boundaries of the beds were flown over, these were marked on the GPS. When plotted up, these information assisted in determining Macrocystis bed boundaries where these were not close to the coast.

Simple

Identification info

Date (Creation)
2002-06-28
Date (Revision)
2002-06-28T00:00:00
Status
Completed

Point of contact

SeaCare Inc - Craig Sanderson
PO Box 878
Sandy Bay
Tasmania
7004
Australia
Spatial representation type
Vector
Topic category
  • Biota
  • Farming

Extent

N
S
E
W


Temporal extent

Time period
1999-08-17 1999-08-17
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


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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

Code
Biotic taxonomic identification

Distribution Information

OnLine resource
SHAPE-ZIP

DATA ACCESS - Macrocystis areal extent (aerial surveys) 1999 in Shapefile format

OnLine resource
imas:Macrocystis_areal_extent_1999

MAP - Macrocystis areal extent (aerial surveys) 1999

OnLine resource
View Dataset in ListMap

OnLine resource
View Metadata in ListData

Resource lineage

Statement
Outlines of Macrocystis beds are presented for Tasmania's east and south for August 1999.
Hierarchy level
Dataset
Description
Positional Accuracy: Noted as part of the attributes for the beds when digitising the data. Beds are each given a code ("rel_code","reliab") indicating the reliability of the bed outline. These are: a accurate to within 20 metres, all sides of bed well defined b some edges of bed well defined but not all c estimate of position only, large discrepancies possible d no real idea of extent or position e doubtful whether bed exists 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: There are two species of Macrocystis in Tasmania, these are M. pyrifera and M. angustifolia. These two species generally can be distinguished on the basis of their depth distribution, which can be estimated, from the air. M. angustifolia is found in waters with a depth less than 8-10m; M. pyrifera is found in waters with a depth > 8-10m. Species determination was noted as part of the attributes for the beds when collecting the data. Beds are each given a code ("spp_code","sp_name") indicating species determination reliability. These are: a Macrocystis pyrifera b Macrocystis pyrifera? c Macrocystis angustifolia d Macrocystis angustifolia? Logical Consistency: All data is checked by both visual and automated means. Completeness: N/A Additional: Sample Method: Coast from South East Cape to Eddystone Point was surveyed by air. Boundaries of the beds were noted using DGPS and videoed. Videos were examined later and Macrocystis bed boundaries were digitised into GIS using Arcinfo]:
Hierarchy level
Dataset

Platform

Identifier

Code
research aeroplane

Metadata

Metadata identifier
680efbdf-432e-4d21-aa49-ac8a508f1e5f

Language
English
Character encoding
UTF8

Point of contact

Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - IMAS Data Manager
Parent metadata

Type of resource

Resource scope
Dataset
Metadata linkage
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/680efbdf-432e-4d21-aa49-ac8a508f1e5f

Point of truth URL of this metadata record

Date info (Creation)
2020-10-07T15:28:19
Date info (Revision)
2020-10-07T15:28:19

Metadata standard

Title
ISO 19115-3:2018
 
 

Overviews

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Spatial extent

N
S
E
W


Keywords

ECOLOGY Community ECOLOGY Ecosystem ECOLOGY Habitat FISHERIES Marine FLORA Native MARINE Biology MARINE Coasts MARINE Reefs VEGETATION Floristic VEGETATION Structural
AODN Discovery Parameter Vocabulary
Biotic taxonomic identification
Global Change Master Directory (GCMD) Earth Science Keywords Version 8.0
EARTH SCIENCE | BIOLOGICAL CLASSIFICATION | PLANTS | MACROALGAE (SEAWEEDS) EARTH SCIENCE | BIOLOGICAL CLASSIFICATION | PLANTS | MACROALGAE (SEAWEEDS) | BROWN ALGAE EARTH SCIENCE | BIOSPHERE | AQUATIC ECOSYSTEMS | MARINE HABITAT

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