Citation

Post, A.L., 2006. Physical Surrogates for Benthic Organisms in the Southern Gulf of Carpentaria, Australia: Testing and Application to the Northern Planning Area. Record  2006/009. Geoscience Australia, Canberra.

Abstract

The characterisation of benthic habitats based on their abiotic (physical and chemical) attributes remains poorly defined in the marine environment, but is becoming increasingly central in the development of marine management plans in Australia and elsewhere in the world. In this report, I test the link between physical and biological datasets for the southern Gulf of Carpentaria, Australia, and then apply these results to whole of the Northern Planning Area (NPA). The results presented are based on a range of physical factors, including the sediment composition (grain size and carbonate content), sediment mobility, water depth and organic carbon flux. The relationship of these physical parameters is tested against the distribution and diversity of benthic macrofauna. The results reveal the importance of process-based indices, such as sediment mobility, in addition to factors such as the percent mud and gravel, the seabed morphology and water depth in explaining the distribution of benthic marcofauna. Species-environment relationships observed at the small scale of this study are consistent with broader associations observed for other organisms within the Gulf of Carpentaria, allowing extrapolation to the wider NPA. Uncertainties in the extrapolation of the physical relationships across broader gradients than those tested need to be recognised in the application of these results to marine planning. In this report I seek to address the uncertainties associated with both the spatial prediction of habitats and the classification of seabed habitats through statistical procedures such as cluster analysis.
Google map showing geographic bounding box with values North bound -9.0 East bound 145.0 West bound 133.0 South bound -18.0
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Product Type/Sub Type

dataset - GA Publication - Record

Constraints

license
Creative Commons Attribution 3.0 Australia Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

2006

Product Type

dataset

Topic Category

geoscientificInformation

Keywords

GA Publication
Record
marine
marine zone
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-9.0
East bound
145.0
West bound
133.0
South bound
-18.0

Lineage

Unknown

Digital Transfer Options

onLine

DISTRIBUTION Format

pdf

Distributor

Role
distributor
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address

Metadata File Identifier

a05f7892-cd41-7506-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

Metadata Date Stamp

2006-04-11

METADATA SECURITY CLASSIFICATION

unclassified

Metadata Contact

Role
pointOfContact
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address
Downloads
For information on acquiring this product,
please contact the Geoscience Australia Sales Centre via:

fax:
+61 2 6249 9960; or
phone:
1800 800 173 (within Australia);
 
+61 2 6249 9966 (outside Australia).

Please note that support hours are 9 am to 5 pm weekdays