Citation

Geoscience Australia provides most of its products for free under a Creative Commons Attribution 3.0 Australia Licence. We only require that you reference the use of our data or information using the following citation:
Kelly, T. & Przeslawski, R., 2012. The ecology and morphology of sponges and octocorals in the northeastern Joseph Bonaparte Gulf. Record  2012_067. Geoscience Australia, Canberra.

Abstract

The Joseph Bonaparte Gulf (JBG) is an offshore area in northern Australia, with active petroleum exploration and infrastructure development. The Van Diemen Rise, an area of raised banks and channels in the northeastern region of the JBG, has been proposed for protection as part of the Oceanic Shoals Commonwealth Marine Reserve. However, baseline information for much of this area is lacking, including spatial and environmental patterns of biological communities. This study uses still imagery of the sea floor in four study areas across the Van Diemen Rise, collected during two seabed mapping surveys conducted by Geoscience Australia and the Australian Institute of Marine Science, in 2009 and 2010. Based on these analyses benthic communities are characterised, and important species and morphological groups are compared with a number of abiotic variables. In so doing, a preliminary assessment is given as to which abiotic variables make the most appropriate surrogates for characterising benthic communities in the region. A number of variables are found to correlate significantly and strongly with some of the biological groups determined in this study. Pheophytin, Si/Al and mud content correlate with the large habitat forming species Mopsella sp., Ianthella sp. and Xestospongia sp. respectively. Backscatter signals from multibeam sonar surveys correlate very strongly with depth and also to some degree with a number of the functional growth forms of sponges. Based on the positive results of this preliminary data investigation, it is recommended that non-linear modelling and robust multivariate analyses be applied to the data set to investigate more complex relationship. This study provides baseline information on the ecology and morphology of key habitat-forming organisms in the northeastern Joseph Bonaparte Gulf which will be facilitate marine monitoring programs for reserve management and environmental impact assessments for industry activity.
Google map showing geographic bounding box with values North bound -10.0 East bound 131.0 West bound 129.0 South bound -13.0
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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)

2012

Product Type

dataset

Topic Category

geoscientificInformation

Keywords

GA Publication
Record
marine
mapping
marine survey
marine biodiversity
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-10.0
East bound
131.0
West bound
129.0
South bound
-13.0

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

c0ac0afb-7c1f-47b1-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

2012-05-23

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 Geoscience Australia Client Services via:

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