A hierarchical framework for classifying seabed biodiversity with application to planning and managing Australia’s marine biological resources

Lyne, Vincent; Williams, Alan; Davies, Campbell R.; Butler, Alan; Yearsley, Gordon K.

doi:10.1016/j.biocon.2010.04.008

Cited by 83 publications

(75 citation statements)

References 17 publications

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“…Geomorphology can be used as a physical surrogate for biodiversity, help identify areas of likely high habitat diversity, as well as stratify subsequent biological sampling. Geomorphic interpretations are often utilised as cost-effective baseline surveys for marine spatial planning, with broadscale, provincial mapping informing international and national policy [2][3][4] and mesoscale, regional mapping useful for local management applications [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Development of a Seamless, High-Resolution Bathymetric Model to Compare Reef Morphology around the Subtropical Island Shelves of Lord Howe Island and Balls Pyramid, Southwest Pacific Ocean

et al. 2018

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Lord Howe Island and Balls Pyramid are located approximately 600 km offshore of the southeastern Australian mainland, in the subtropical waters of the northern Tasman Sea. Lord Howe Island hosts the most southern coral reef in the Pacific Ocean, and the shelves surrounding both islands feature fossil coral reefs. This study creates a seamless, high-resolution (5 m cell size) bathymetry model of the two shelves to compare and contrast the extent of reef development and shelf morphology. This was produced by integrating satellite-derived depth data (derived to 35 m depth) and multibeam echosounder (MBES) data. Image partitioning and filtering improved the accuracy of the bathymetry estimates and the suitability for integration with MBES data. Diverse accretionary and erosional geomorphic features were mapped on both shelves, with fossil reefs dominating the shelves in 25-50 m depth. Similar patterns of shelf morphology were observed for the middle and outer shelves, while the inner shelf regions were most dissimilar, with reef development greater around Lord Howe Island compared to the more restricted inner shelf reefs around Balls Pyramid. Understanding the relative extent and morphology of shelf features provides insights into the geological and ecological processes that have influenced the formation of the shelves.

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Section: Introductionmentioning

confidence: 99%

Development of a Seamless, High-Resolution Bathymetric Model to Compare Reef Morphology around the Subtropical Island Shelves of Lord Howe Island and Balls Pyramid, Southwest Pacific Ocean

et al. 2018

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“…Bathomes are depth-related sub-divisions of the marine benthic realm defined by community structure (e.g. Last et al, 2010;Ponder et al, 2002). These coarse spatial-scale definitions are consistent with the multiscale and hierarchical 'seascape' classification adopted to define 'bioregions' for marine conservation planning in Australia (e.g.…”

Section: Scoping (Listing Habitat Types)mentioning

confidence: 99%

“…Again, in contrast to species (for which distribution maps are commonly available) habitat distributions are less well specified. At the scoping stage, distributions of habitat types were defined simply by their presence or absence in depth zones ('bathomes' sensu Last et al, 2010), and association with particular geomorphic seabed features. Bathomes are depth-related sub-divisions of the marine benthic realm defined by community structure (e.g.…”

Section: Scoping (Listing Habitat Types)mentioning

confidence: 99%

Evaluating impacts of fishing on benthic habitats: A risk assessment framework applied to Australian fisheries

et al. 2011

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“…1). At each site, samples were collected from two ecologically meaningful depth zones (bathomes sensu Last et al, 2010): the outer continental shelf (*100 m depth) and shallow upper continental slope (*400 m). At selected sites within each province, the sampling design was extended to include additional samples at the following bathomes: continental shelf break (*200 m), deep upper continental slope (*700 m), and shallow mid-continental slope (*1,000 m).…”

Section: Field Collectionsmentioning

confidence: 99%

Living on the edge: the sponge fauna of Australia’s southwestern and northwestern deep continental margin

et al. 2011

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This first assessment of sponges on Australia's deep western continental margin (100-1,100 m) found that highly species-rich sponge assemblages dominate the megabenthic invertebrate biomass in both southwestern (86%) and northwestern (35%) areas. The demosponge orders Poecilosclerida, Dictyoceratida, Haplosclerida, and Astrophorida are dominant, while the presence of the order Agelasida, lithistid sponges, and the Verongida are noteworthy in providing contrasts to other studies from the deep temperate Australian margin. Most sponge species appeared to be rare as two-thirds were present in only one or two samples-a finding consistent with studies of the shallow Australian sponge fauna. The Demospongiae and Calcarea had similar distribution and abundance patterns being found in the greatest numbers in the south on the outer shelf and shelf edge in hard substrates. In contrast, the Hexactinellida were more abundant at deeper depths and in soft substrates, and were more common in the north. Although the environmental factors that influence sponge distributions on the western margin cannot be completely understood from the physical covariates analyzed in this study, the data suggest depth-related factors, substrate type, and current regimes are the most influential. Incompletely documented historic demersal trawling may partly account for the lower sponge biomass found in the north. The potentially high importance of sponges to benthic ecosystems, as well as the potential for high impacts on sponges by bottom trawling, indicates that maintaining healthy sponge assemblages should be an important consideration for marine conservation planners. Successful management will need to be underpinned by additional research that better identifies the ecological roles of sponges, and their distributions over local and broad environmental scales.

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A hierarchical framework for classifying seabed biodiversity with application to planning and managing Australia’s marine biological resources

Cited by 83 publications

References 17 publications

Development of a Seamless, High-Resolution Bathymetric Model to Compare Reef Morphology around the Subtropical Island Shelves of Lord Howe Island and Balls Pyramid, Southwest Pacific Ocean

Development of a Seamless, High-Resolution Bathymetric Model to Compare Reef Morphology around the Subtropical Island Shelves of Lord Howe Island and Balls Pyramid, Southwest Pacific Ocean

Evaluating impacts of fishing on benthic habitats: A risk assessment framework applied to Australian fisheries

Living on the edge: the sponge fauna of Australia’s southwestern and northwestern deep continental margin

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