Dive surveys of long spined sea urchin (Centrostephanus rodgersii) and barrens habitat, Tasmania

The spatial extent of the long spined sea urchin, Centrostephanus rodgersii, was estimated by divers using underwater visual census methods to survey rocky reef habitats at 13 regions along Tasmania's east coast (between Eddystone Point and Recherche Bay). Within each region 3 subsites were surveyed, and within each subsite 4 belt transects were surveyed.


Divers recorded depth, percent substrata type, percent C. rodgersii barrens habitat; abundance of urchins (C. rodgersii and H. erythrogramma), rock lobster (J. edwardsii) and abalone (H. rubra). Divers also recorded algal cover (estimated), C. rodgersii barrens and substratum type using set categories (see below).

Simple

Identification info

Date (Creation)
2008-04-15

Principal investigator

School of Zoology, University of Tasmania (UTAS) - Johnson, Craig
ORCID ID >

Purpose
To determine the distribution of the long spined sea urchin (Centrostephanus rodgersii) on the east coast of Tasmania, to estimate the cover of C. rodgersii barrens on the east coast, and to compare the standing stocks of commercially harvested black lip abalone (Haliotis rubra) and southern rock lobster (Jasus edwardsii) in barrens habitat with that of adjacent seaweed beds.
Credit
Ling, Scott
Credit
Ross, Jeff
Credit
Funding: FRDC project 2001/044
Status
Completed

Point of contact

Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - Johnson, Craig
IMAS - Hobart
Private Bag 129
Hobart
Tasmania
7001
Australia
ORCID ID >

Topic category
  • Biota

Extent

N
S
E
W


Temporal extent

Time period
2001-09-03 2002-06-06

Vertical element

Minimum value
1
Maximum value
19
Identifier
EPSG::5715
Name
MSL depth
Maintenance and update frequency
Not planned
Keywords (Taxon)
  • 25 211001
  • Centrostephanus rodgersii
  • 25 247001
  • Heliocidaris erythrogramma
  • 28 820001
  • Jasus edwardsii
  • 24 038006
  • Haliotis rubra
  • 24 038004
  • Haliotis laevigata
Australian and New Zealand Standard Research Classification (ANZSRC): Fields of Research
AODN Discovery Parameter Vocabulary
Keywords (Theme)
  • Cover of urchin barren
  • Substratum
  • Algal cover

Resource constraints

Classification
Unclassified

Resource constraints

Use limitation
The data described in this record are the intellectual property of the University of Tasmania through the School of Zoology and the Tasmanian Aquaculture and Fisheries Institute.

Resource constraints

Linkage
http://i.creativecommons.org/l/by/4.0/88x31.png

License Graphic

Title
Creative Commons Attribution 4.0 International License


>

Website
http://creativecommons.org/licenses/by/4.0/

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
Environment description
3 Microsoft Excel spreadsheets (xls): - all dive survey data (centro_dive_data_FRDC_2001_044.xls) (does not contain GPS points) - raw data - divided by bioregion (dive_surveydata_ raw_coastwide_surve____y_FRDC_2001_044.xls) (does not contain GPS points) - one containing GPS point locations for each transect (GPS_coordinates_dive_transects_FRDC_____survey_2001_0 44.xls)
Supplemental Information
References: Johnson, C., Ling, S., Ross, J., Shepherd, S. and Miller, K., 2005. Establishment of the long-spined sea urchin (Centrostephanus rodgersii) in Tasmania: First assessment of potential threats to fisheries. FRDC Final Report, Project No. 2001/044. University of Tasmania, Tasmanian Aquaculture and Fisheries Institute, School of Zoology. Smith, E. 2006. Establishment of the long-spined sea urchin - Centrostephanus rogersii. Fishing Today - Tasmanian Fishing Industry News, Volume 19, No. 1, Feb/March. http://www.dpiw.tas.gov.au/inter.nsf/Attachments/LBUN-6 MV6CV?open

Content Information

Content type
Physical measurement
Description
Abundance of invertebrates

Identifier

Code
Abundance of biota
Description
Percentage cover of sea urchin barren
Name
Cover of urchin barren

Identifier
http://vocab.nerc.ac.uk/collection/P06/current/UPCT
Name
Percent
Description
Percentage cover of substratum type
Name
Substratum

Identifier
http://vocab.nerc.ac.uk/collection/P06/current/UPCT
Name
Percent
Description
Percentage cover of algal species or guilds
Name
Algal cover

Identifier
http://vocab.nerc.ac.uk/collection/P06/current/UPCT
Name
Percent

Distribution Information

Distribution format
  • Microsoft Excel (xls)

OnLine resource
DATA - dive data 13 regions Eastern Tas [direct download]

OnLine resource
DATA - raw dive survey data [direct download]

OnLine resource
SUPPLEMENTARY INFO - GPS coordinates for dive survey transects [direct download]

Resource lineage

Statement
Within each of the 13 regions, 3 subsites were surveyed, and within each subsite 4 belt transects were set perpendicular to the shore spanning 3-18 m in depth (with transect length a maximum of 100 m). For each 5 x 1m section along both sides of the transect line divers recorded depth, percent substrata type, percent C. rodgersii barrens habitat; abundance of urchins (C. rodgersii and H. erythrogramma), rock lobster (J. edwardsii) and abalone (H. rubra). Algal cover (percent per species or guild) was also estimated to the nearest 5% for each 5 x 1 m section for both sides of the transect line. Divers classified habitat as C. rodgersii barrens when foliose macroalgae was lacking and locally abundant C. rodgersii individuals were present. Areas of grazed substratum could be discerned unambiguously. The substratum was classified either as flat rock shelves, very large boulders, large boulders, small boulders, cobble, pebble, gravel, or sand. Transect position was recorded using a GPS point for the start and finish of each transect.
Hierarchy level
Dataset

Resource lineage

Statement
GPS used datum WGS84. Note GPS inaccuracy may have resulted if datum type unknowingly changed etc (e.g. some data points appear on land, however subsite names give some reference as to point location).
Hierarchy level
Collection hardware

Metadata

Metadata identifier
7e31c190-0a7e-11dd-857c-00188b4c0af8

Language
English
Character encoding
UTF8

Point of contact

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

Type of resource

Resource scope
Dataset
Metadata linkage
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/7e31c190-0a7e-11dd-857c-00188b4c0af8

Point of truth URL of this metadata record

Date info (Creation)
2021-03-29T23:55:02
Date info (Revision)
2021-03-29T23:55:02

Metadata standard

Title
ISO 19115-3:2018
 
 

Overviews

Spatial extent

N
S
E
W


Keywords

Algal cover Cover of urchin barren Substratum
AODN Discovery Parameter Vocabulary
Abundance of biota

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