Including biogeochemical factors and a temporal component in benthic habitat maps: Influences on infaunal diversity in a temperate embayment

Mapping of benthic habitats seldom considers biogeochemical variables or changes across time. We aimed to: (i) develop winter and summer benthic habitat maps for a sandy embayment; and (ii) compare the effectiveness of various maps for differentiating infauna. Patch-types (internally homogeneous areas of seafloor) were constructed using combinations of abiotic parameters, and are presented in sediment-based, biogeochemistry-based and combined sediment/biogeochemistry-based habitat maps. August and February surveys were undertaken in Jervis Bay, Australia, to collect samples for physical (%mud, sorting, %carbonate), biogeochemical (chlorophyll a, sulfur, sediment metabolism, bio-available elements) and infaunal analyses. Boosted Decision Tree and cokriging models generated spatially continuous data-layers. Habitat maps were made from classified layers using GIS overlays, and were interpreted from a biophysical-process perspective. Biogeochemistry and %mud varied spatially and temporally, even in visually homogeneous sediments. Species turnover across patch-types was important for diversity, and the utility of habitat maps for differentiating biological communities varied across months. Diversity patterns were broadly related to reactive carbon and redox which varied temporally. Inclusion of biogeochemical factors and time in habitat maps provides a better framework for differentiating species and interpreting biodiversity patterns than once-off studies based solely on sedimentology or video-analysis.

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Identification info

Date (Publication)
2011-01-01T00:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/71129

Citation identifier
Digital Object Identifier/http://dx.doi.org/10.1071/MF11110

Cited responsible party
Role Organisation / Individual Name Details
Author

Radke, L.C.

 1
Author

Huang, Z.

 2
Author

Przeslawski, R.

 3
Author

McArthur, M.

 4
Author

Webster, I.

 5
Point of contact
Role Organisation / Individual Name Details
Owner

Commonwealth of Australia (Geoscience Australia)
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Commonwealth of Australia (Geoscience Australia)

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Point of contact

Huang, Z.

 PSCD Internal Contact
Topic category
  • Geoscientific information

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N
S
E
W


Maintenance and update frequency
Unknown
Keywords

  • External Publication

Theme

  • abiotic surrogates

  • environmental

  • geochemistry

  • seabed

  • marine survey

  • marine

  • CERF

Keywords

  • AU-NSW

Australian and New Zealand Standard Research Classification (ANZSRC)

  • Earth Sciences

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  • Published_External

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Non-Exclusive licence to publish copyright (please provide TRIM link)

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Non-exclusive GA

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1.0

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Australian Government Security ClassificationSystem

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2018-11-01T00:00:00
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https://www.protectivesecurity.gov.au/Pages/default.aspx

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Unclassified
Language
English
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UTF8

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Commonwealth of Australia (Geoscience Australia)

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OnLine resource

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Non geographic dataset
Other

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Metadata constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/a05f7892-f9d8-7506-e044-00144fdd4fa6

Title

GeoNetwork UUID

Language
English
Character encoding
UTF8
Contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

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Document
Name

Map

Alternative metadata reference

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Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/71129

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https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/a05f7892-f9d8-7506-e044-00144fdd4fa6

Date info (Revision)
2018-04-22T08:15:32
Date info (Creation)
2010-10-07T00:00:00

Metadata standard

Title

AU/NZS ISO 19115-1:2014

Metadata standard

Title

ISO 19115-1:2014

Metadata standard

Title

ISO 19115-3

Title

Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

Edition

Version 2.0, September 2018

Citation identifier
https://pid.geoscience.gov.au/dataset/ga/122551

 
 

Spatial extent

N
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E
W


Keywords

CERF abiotic surrogates environmental geochemistry marine marine survey seabed

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