Soft sediment assemblages at Casey Station: Spatial variation and human impacts. (core samples: Oct-Dec 1997)

A survey of macrobenthic assemblages in soft-sediments was done at Casey Station, East Antarctica. Samples were taken by divers using hand-held corers (core size - 10 cm diameter by 10 cm deep). The aims were: 1) To examine spatial variation at several scales in these assemblages; 2) To determine if there were differences between potentially impacted areas and control areas; 3) To determine the level of replication, taxonomic resolution and data transformation that are appropriate to studies of human impacts in Antarctic soft-sediment assemblages. Cores were collected by divers in a hierarchical, spatially nested design incorporating 4 scales: Locations (1000s of metres apart), Sites (100s of metres), Plots (10s of metres) and among replicates within plots (~1 metre). Four replicates for infaunal analysis were collected from each plot.

Variation at the whole assemblage level was most significant at the largest scale: between Locations; but significant differences were also found between Plots within Sites, and between Sites within Locations. The impacted locations, near two waste tips, a sewage outfall and a wharf, as a group were significantly different to control locations. Impacted locations had less variable assemblages but more variable populations of dominant species than control locations. Control locations had greater richness and diversity than impacted locations. Patterns of assemblage structure were similar at fine (species and family) and medium (family to order) levels of taxonomic resolution but changed at coarse (phylum) levels of resolution. Assemblage patterns were similar between untransformed, square root and fourth root transformations but often different in presence/absence transformations.


Concentrations of metals in sediments were also analysed and other environmental variables such as grain size and water depth were measured (two replicates from each plot). Multivariate correlations between the biological and environmental datasets were examined.


Links to ASAC 1100.


The fields in this dataset are:


Location

Site/Plot

Replicate

Antimony

Arsenic

Cadmium

Chromium

Copper

Iron

Lead

Manganese

Mercury

Nickel

Silver

Tin

Zinc

Weight

Toxicity

Simple

Identification info

Alternate title
Soft sediment assemblages at Casey Station: Spatial variation and human impacts. (core samples: Oct-Dec 1997)
Date (Publication)
2003-05-07
Edition
1
Citation identifier
Dataset DOI

Title
Information and documentation - Digital object identifier system
Date (Publication)
2012-04-23
Citation identifier
ISO 26324:2012

Citation identifier
doi:10.4225/15/55F762224D664

Originator

Riddle, M.J. and Stark, J.S.

Publisher

Australian Antarctic Data Centre

Principal investigator

RIDDLE, MARTIN J.
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Principal investigator

STARK, JONATHAN SEAN
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Collaborator

STARK, JONATHAN SEAN
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia
Name
CAASM Metadata
Website
https://data.aad.gov.au/metadata/records/ASAC_2201_Casey_benthic_survey2

Status
Completed

Custodian

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Spatial resolution

Vertical sampling distance
1
Topic category
  • Environment
  • Biota
  • Oceans
  • Transportation

Extent

N
S
E
W


Extent

Description
Temporal Coverage

Temporal extent

TimePeriod
1997-10-22 1997-12-31

Extent

Description
Vertical Extent - Depth

Vertical element

Minimum value
5
Maximum value
5
Identifier
urn:x-ogc:def:cs:EPSG:6498
Name
Vertical CS. Axis: depth (D). Orientation: down. UoM: m.
Identifier
urn:x-ogc:def:axis:EPSG:113
Name
depth
Title
Human impacts in soft-sediment assemblages at Casey Station, East Antarctica: spatial variation, taxonomic resolution and data transformation
Date (Publication)
2003

Author

Stark J. S., Riddle M. J. and Simpson R. D.
Name
Aust. Ecol.
Title
Human impacts in Antarctic marine soft-sediment assemblages: correlations between multivariate biological patterns and environmental variables.
Date (Publication)
2003

Author

Stark J. S., Riddle M. J., Snape I. and Scouller R. C.
Name
Est. Coast. Shelf Sci.
NASA/GCMD Earth Science Keywords
  • EARTH SCIENCE > HUMAN DIMENSIONS > ENVIRONMENTAL IMPACTS > CONTAMINANT LEVELS/SPILLS
Keywords
  • ANTIMONY
  • ARSENIC
  • ASSEMBLAGE
  • CADMIUM
  • BENTHIC
  • CHROMIUM
  • COMMUNITY
  • COPPER
  • CORE SAMPLES
  • IRON
  • HUMAN IMPACT
  • LOCATION
  • LEAD
NASA/GCMD Earth Science Keywords
  • CORING DEVICES
NASA/GCMD Earth Science Keywords
  • FIELD INVESTIGATION
NASA/GCMD Earth Science Keywords
  • AMD/AU
  • AMD
  • CEOS
NASA/GCMD Earth Science Keywords
  • OCEAN > SOUTHERN OCEAN
  • GEOGRAPHIC REGION > POLAR

Resource constraints

Use limitation
This metadata record is publicly available.

Resource constraints

Access constraints
licence
Other constraints
These data are publicly available for download from the provided URL.

Resource constraints

File type
Portable Network Graphic
Linkage
Creative Commons by Attribution logo

Title
Attribution 4.0 International (CC BY 4.0)
Website
https://creativecommons.org/licenses/by/4.0/legalcode

Legal code for Creative Commons by Attribution 4.0 International license

Use constraints
licence
Other constraints
This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2201_Casey_benthic_survey2 when using these data.
Language
English
Character encoding
UTF8

Distribution Information

Distributor

Distributor

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Distributor

Fees
free
Planned available datetime
2003-05-07T00:00:00
Units of distribution
kb
Transfer size
47
Distribution format
  • excel

OnLine resource
GET DATA

Download point for the data

OnLine resource
PROJECT HOME PAGE

Public information for ASAC project 2201

OnLine resource
PROJECT HOME PAGE

Public information for ASAC project 1100

OnLine resource
VIEW RELATED INFORMATION

Citation reference for this metadata record and dataset

Resource lineage

Statement
Gammarid, Isopod, gastropod faunas identified at the Australian Museum. Remaining faunas identified by J. Stark.
Hierarchy level
Dataset
Maintenance and update frequency
As needed
Maintenance note
2015-09-15 - record updated by Dave Connell. Basic updates. 2019-03-15 - record updated by Dave Connell for ISO compliance. 2022-04-28 - record updated by Dave Connell for ISO compliance.

Metadata

Metadata identifier
string/ASAC_2201_Casey_benthic_survey2

Language
English
Character encoding
UTF8

Author

STARK, JONATHAN SEAN
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Sponsor

Australian Antarctic Division

Owner

AADC

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
071a6fa0-3901-4ee9-9b6a-e7bd156b0401

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Date (Last Revision)
2022-04-28T14:00:13

Identifier

Description
metadata.extraction_date

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
8.6

Metadata linkage
http://data.aad.gov.au/metadata/records/ASAC_2201_Casey_benthic_survey2

Point of truth for the metadata record

Date info (Creation)
2001-05-01T00:00:00
Date info (Last Update)
2022-04-28

Metadata standard

Title
ISO 19115-3
Edition
2014
Other citation details
Version 1
Title
DIF to ISO 19115-1 Profile
 
 

Overviews

Spatial extent

N
S
E
W


Keywords


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Associated resources

Not available