TemperateReefBase Geonetwork Catalogue
Management options to minimise formation of urchin barrens: using belt transect surveys to monitor benthic community structure
Belt transect surveys (50m) were used to monitor the benthic community structure through time at experimental (lobster additions/ research reserve sites or abalone diver urchin culls) and control sites in eastern Tasmania. Measures of percentage cover of key algal guilds, percentage of reef grazed by sea urchins, number of sea urchins (Centrostephanus rodgersii, Heliocidaris erythrogramma), Abalone (Haliotis Rubra), Rock lobsters (Jasus edwardsii) and type of substratum were recorded.
Simple
Identification info
- Date (Creation)
- 2011-09-16T15:58:00
Principal investigator
Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - Johnson, Craig, Prof.
IMAS-Sandy Bay
Private Bag 129
Hobart
TAS
7001
Australia
Collaborator
Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - Ling, Scott, Dr (Research Associate)
IMAS-Sandy Bay
Private Bag 129
Hobart
TAS
7001
Australia
researchAssistant
Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - Sanderson, Craig, Dr (Senior Technical Officer)
IMAS-Sandy Bay
Private Bag 129
Hobart
TAS
7001
Australia
- Purpose
- Assessment of Management Options to Minimise Formation of 'Barrens' Habitat by the Long-Spined Sea Urchin (Centrostephanus rodgersii) in Tasmania
- Credit
- Juan Gabriel Dominguez Sarimento
- Credit
- Emma Flukes
- Credit
- Rodney Treloggan
- Credit
- Funding: FRDC project 2007/045
- Status
- Completed
Principal investigator
Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - Johnson, Craig, Prof.
IMAS - Sandy Bay
Private Bag 129
Hobart
TAS
7001
Australia
Collaborator
Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - Ling, Scott, Dr (Marine Experimental and Quantitative Ecologist)
IMAS - Sandy Bay
Private Bag 129
Hobart
TAS
7001
Australia
- Spatial representation type
- Text, table
- Temporal resolution
-
P0Y6M0DT0H0M0S
- Topic category
-
- Biota
Extent
N
S
E
W
))
N
S
E
W
))
N
S
E
W
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N
S
E
W
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N
S
E
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Temporal extent
- Time period
- 2007-04-01T00:00:00 2011-02-28T00:00:00
Vertical element
- Minimum value
- 5
- Maximum value
- 20
- Identifier
- EPSG::5715
- Name
- MSL depth
- Maintenance and update frequency
- Not planned
Resource format
- Title
- Microsoft Excel (xlsx)
- Date
- Edition
- 2007
- Keywords (Taxon)
-
- Centrostephanus rodgersii
- Jasus edwardsii
- Haliotis rubra
- Ecklonia radiata
- Phyllospora comosa
- Macrocystis pyrifera
- Heliocidaris erythrogramma
- Keywords (Theme)
-
- Urchin barrens
- Global Change Master Directory (GCMD) Earth Science Keywords Version 8.0
- Keywords (Discipline)
-
- Temperate Reef
- Keywords (Theme)
-
- coverage
- Coverage of urchin barrens
- Algal coverage
- Jasus edwardsii (rock lobster) carapace length
Resource constraints
- Classification
- Restricted
Resource constraints
- Use limitation
- The data described in this record are the intellectual property of University of Tasmania through the Institute for Marine and Antarctic Studies
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).
- Other constraints
- See point of contact for access to the data. Data will be available upon publication.
Associated resource
- Title
- FRDC project 2007/045
- Date (unknown)
- 2011-09-16T00:00:00
- Language
- English
- Character encoding
- UTF8
- Supplemental Information
- References: Final FRDC Report in draft format.
Content Information
- Content type
- Physical measurement
Identifier
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/ULAA
- Name
- Metres
- Description
- Type of substratum present using the follow categories: FR=Flat Rock, VLB=Very Large boulders(particle size more than 2.5 m but < 5m diameter), LB=Large boulders (particle size >1 m & < 2.5 m diameter), SB=Small boulders (particle size <1m diameter but > 0.20 m diameter), C=Cobble (particle size >0.10 m but <0.20 m diameter), P=Pebble (>0.01m & <0.10 m), G=Gravel (<0.01 m diameter) and S=Sand. The percentage of each type is recorded to nearest 5%, if present but <5% scored as 1, i.e. present.
- Name
- coverage
- Maximum value
- 100
- Minimum value
- 0
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UPCT
- Name
- Percent
- Name
- Coverage of urchin barrens
- Name
- Percentage_Barrens
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UPCT
- Name
- Percent
- Description
- Coverage of various algal types estimated to nearest 5% (expressed as <5 for very low coverage).
- Name
- Algal coverage
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UPCT
- Name
- Percent
- Description
- Invertebrate species abundance (Centrostephanus rodgersii, Haliotis spp, Heliocidaris erythrogramma, Jasus edwardsii). Expressed as count per 5m2 (per 10m2 for J. edwardsii)
Identifier
- Code
- Abundance of biota
- Name
- Number per 5m2 (lobsters per 10m2)
- Description
- Estimated carapace length of Rock Lobster individuals
- Name
- Jasus edwardsii (rock lobster) carapace length
- Name
- RL_carapace_length
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UXMM
- Name
- Millimetres
Distribution Information
- Distribution format
-
- Microsoft Excel (xlsx)
- OnLine resource
- DATA ACCESS V1 [database format] - all benthic transect data for project FRDC2007/045
- OnLine resource
-
imas:FR2_CRJohnson_Urchin_barrens_macroalgae_invert_surveys_MAP
MAP - benthic transect surveys
- OnLine resource
-
imas:FR2_CRJohnson_Urchin_barrens_macroalgae_invert_surveys_DATA
This OCG WFS provides the data in subsettable CSV format.
Resource lineage
- Statement
- 50 metre belt transects were used to monitor benthic community structure through time at impacted and control sites in eastern Tasmania. All the transect positions are approximately the same across sampling periods, these positions were recorded with a GPS. The transects were deployed from a boat following a depth contour, i.e. along shore transects. Two divers were deployed into the water at one end of the transect. The transect line was marked every 5 m. The divers swam along the line transect surveying a corridor of 1 metre width (2 metres width to assess Rock lobsters density). Data was recorded every 5 metres; every organism with more than half of the body inside the area was recorded. Every 5 metre segment of the transect was swam twice, first close to the bottom counting sea urchin, abalone, lobsters and general understory coverage, and second about 2 metres from the seabed to assess total percentage cover of kelp, barren, and substratum type (i.e. size-grading of rock types).
- Hierarchy level
- Dataset
Resource lineage
- Statement
- GPS used datum WGS84.
- Hierarchy level
- Collection hardware
- Hierarchy level
- Dataset
Platform
Identifier
- Code
- diver
Metadata
- Metadata identifier
- 6654433b-b0c1-43a2-92c6-76734fd6355e
- Language
- English
- Character encoding
- UTF8
Point of contact
Type of resource
- Resource scope
- Dataset
- Metadata linkage
-
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/6654433b-b0c1-43a2-92c6-76734fd6355e
Point of truth URL of this metadata record
- Date info (Creation)
- 2020-08-14T11:58:44
- Date info (Revision)
- 2020-08-14T11:58:44
Metadata standard
- Title
- ISO 19115-3:2018
Overviews
Spatial extent
N
S
E
W
N
S
E
W
N
S
E
W
N
S
E
W
N
S
E
W
Provided by
Associated resources
Not available