Biogeography of the Lord Howe Rise region, Tasman Sea  

Authors / CoAuthors

Przeslawski, R. | Williams, A. | Nicoll, S. | Hughes, M.G. | Anderson, T.J.

Abstract

In this review we aim to synthesise physical and biological information on the Lord Howe Rise (LHR) region to describe its biogeography at a regional scale (100s of kilometres) and assess this in a national and global context. The LHR region is large (1.95 million km2), spans tropical and cool temperate latitudes (18.4oS to 40.3oS), and is topographically complex being formed of large expanses of soft sediment basins and plateaus (i.e. subdued bathymetric features), with scattered seamounts, guyots, knolls, and pinnacles (i.e. raised bathymetric features). Physical factors can vary between these two broad feature types, particularly regarding depth and substrate, although no clear relationship was detected between sediment texture and geomorphic features across the survey area. Biological data from two recent surveys (TAN0713 and NORFANZ) show differences in assemblages and species distribution between raised and subdued bathymetric features and suggest that biological communities are indeed influenced by substrate as well as depth-related variables, with some taxa such as demersal fish showing latitudinal gradients. There are only limited spatially-replicated studies and no time-series data available for most of the LHR region, but paleo-environmental processes and examples from other regions provide some indication of migration, speciation, and endemism in the LHR region.

Product Type

nonGeographicDataset

eCat Id

69975

Contact for the resource

Digital Object Identifier

http://dx.doi.org/10.1016/j.dsr2.2010.10.051

Keywords

• External PublicationAbstract

( Theme )

• geology

( Theme )

• geomorphology

( Theme )

• sedimentary basins

( Theme )

• habitat

( Theme )

• marine

• AU-NSW

Australian and New Zealand Standard Research Classification (ANZSRC)

• Earth Sciences

• Published_External

Publication Date

2010-01-01T00:00:00

Creation Date

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Australian Government Security ClassificationSystem    

Classification - unclassified

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Creative Commons Attribution 4.0 International Licence    

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Use - license

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Purpose

Maintenance Information

unknown

Topic Category

geoscientificInformation

Series Information

Lineage

Unknown

Parent Information

Extents

[-40.0, -20.0, 150.0, 165.0]

Reference System

Spatial Resolution

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