Kimberley marine biota. History and environment

Wilson, Barry

doi:10.18195/issn.0313-122x.84.2014.001-018

Cited by 21 publications

(31 citation statements)

References 30 publications

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“…Distinct differences in environmental conditions and connectivity regimes have been recorded from the coast to the shelf edge (Wilson 2013(Wilson , 2014. The Kimberley inshore (shoreline to 50 m bathymetry as defined by Bryce et al 2018) is characterised by relatively turbid, macrotidal, nutrient rich conditions, with connectivity regimes controlled by local currents influenced by seasonal winds and tidal flows (Figure 2A, C).…”

Section: Study Area and Site Descriptionsmentioning

confidence: 99%

“…The Kimberley inshore (shoreline to 50 m bathymetry as defined by Bryce et al 2018) is characterised by relatively turbid, macrotidal, nutrient rich conditions, with connectivity regimes controlled by local currents influenced by seasonal winds and tidal flows (Figure 2A, C). Within the midshelf (51-150 m bathymetry) are submerged shoals (Vulcan, Eugene McDermott, Heywood and Echuca Shoals) with a hard rock foundation and low coral cover and Browse Island (Heyward et al 2012, Wilson 2014.The offshore area (>150 m bathymetry) includes Ashmore and Hibernia Reefs in the north and Rowley Shoals in the south, all situated on the edge of the continental shelf approximately 300 km off the coast (Figure 1). They are characterised by clear, nutrient poor, oceanic conditions, with direct pelagic connectivity to the highly biodiverse region of Indonesia ( Figure 2B, D).…”

Section: Study Area and Site Descriptionsmentioning

confidence: 99%

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Soft coral and sea fan (Octocorallia) biodiversity and distribution from a multitaxon survey (2009–2014) of the shallow tropical Kimberley, Western Australia

Bryce¹,

Radford²,

Fabricius³

2018

Rec West Aust Mus Sup

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-Any assessment of tropical reef ecosystems should extend beyond a hard coral inventory to include soft corals and other sessile benthic organisms. We assessed octocoral assemblages at 177 marine survey stations in the Kimberly region, Western Australia (<30 m depth), to establish species inventories and describe community structures. The 1,174 vouchered specimens yielded a total of 206 Linnean and morphospecies. The overall composition of this fauna was typical for tropical Indo-Pacific shallow water coral reefs. Octocoral communities demonstrated high species heterogeneity across habitats, with strong differences between inshore and offshore, and a latitudinal zonation along the Kimberley inshore. Of the recorded taxa, 45% were exclusively found offshore, 16% inshore and 39% occurred both inshore and offshore. The nearshore Bonaparte Peninsula, the midshelf region and the northern offshore regions were all 'hotspots' for soft coral diversity, while the southern offshore regions presented the most distinct species composition. These results have profound implications for conservation strategies relating to these remote benthic habitats.

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Section: Study Area and Site Descriptionsmentioning

confidence: 99%

Section: Study Area and Site Descriptionsmentioning

confidence: 99%

Soft coral and sea fan (Octocorallia) biodiversity and distribution from a multitaxon survey (2009–2014) of the shallow tropical Kimberley, Western Australia

Bryce¹,

Radford²,

Fabricius³

2018

Rec West Aust Mus Sup

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“…The Kimberley inshore is complex with a high diversity of habitats created by over 2,500 islands and a convoluted ria coastline (Wilson, 2014), which contrasts with the simpler, more well-defined offshore habitats of the deeper reefs, shoals and atolls of the continental slope. The complexity of the inshore is further complicated by the macro-tides and corresponding light-impeding, silt-laden waters.…”

Section: Discussionmentioning

confidence: 99%

“…The status of the marine environments and their associated flora and fauna, in the face of these increasing anthropogenic uses, is still relatively unknown (Wood and Mills 2008). The need to rectify this knowledge deficiency is now a priority and considerable effort has been, and is being made, by several agencies to remedy the situation (Wilson 2014). The Woodside Collection Project (Kimberley) [2008][2009][2010][2011][2012][2013][2014][2015] (the Project) was one such initiative.…”

Section: Introductionmentioning

confidence: 99%

“…This irregular polygon stretches north along the coast from Cape Jaubert, south of Broome, to the Western Australia/Northern Territory border, and extends westward beyond the 1000 m bathymetric contour to include the continental shelf edge atolls (Hibernia Reef to Imperieuse Reef, northernmost to southernmost respectively) ( Figure 1). Wilson (2014) has reviewed the habitats, geology and historical exploration of the Project Area. The historical data concerned nine targeted marine taxa (marine plants, sponges, marine worms, hard corals, soft corals, molluscs, crustaceans, echinoderms and fishes) and have been published (Jones et al 2017).…”

Section: Introductionmentioning

confidence: 99%

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Project methods and station geomorphology related to a multi-taxon survey (2009–2014) of the Kimberley

Bryce¹,

Bryce²,

Radford³

2018

Rec West Aust Mus Sup

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-The marine environments off the Kimberley coast are being subjected to ever increasing human-induced pressures, with little known of the region's marine biodiversity, and therefore, which conservation approaches are appropriate. Consequently, the Western Australian Museum with partner agencies undertook to survey the region over a six year period (2009)(2010)(2011)(2012)(2013)(2014). Thirty eight locations involving 179 survey stations were visited within the defined P roject A rea, w hich r anged f rom t he Kimberley coast to the continental shelf edge. Geomorphic data from these stations, along with additional data from a 2006 survey, were incorporated into the analyses, providing a total of 224 survey stations. Analyses revealed a three-way differentiation of the surveyed stations demonstrating continental shelf zonation, an intertidal and subtidal distinction and a turbidity gradation.

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The applicability of eDNA metabarcoding approaches for sessile benthic surveying in the Kimberley region, north‐western Australia

et al. 2021

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The application of environmental DNA technologies is a promising new approach to rapidly audit biodiversity across large-scale, remote regions. Here, we examine the efficacy of a dual-assay eDNA metabarcoding approach for sessile benthic bioassessments in the turbid waters of the Lalang-garram marine parks, Kimberley, north-western Australia. We ask three principal questions: (1) "Is the eDNA released by sessile benthic taxa (i.e., hard and soft corals, sponges and tunicates) locally detectable?", (2) "What level of taxonomic resolution is afforded by eDNA metabarcoding using the ITS2 region?", and (3) "How well does eDNA metabarcoding compare to conventional benthic survey techniques?". We report that a dual-assay eDNA metabarcoding approach can detect approximately 70% of the local benthic taxa (i.e., at a species, genus level). It is, however, not as effective at the individual/population level, detecting only approximately 40% of unique amplicon sequence variant (ASV) signals released by an array of individual benthic organisms at the surveyed locations.In examining the efficacy and resolution of the applied ITS2 metabarcoding markers for bioassessments, we report large gaps in the variety of publicly available benthic ITS2 reference sequence data, limiting our ability to provide robust taxonomic assignments. These findings highlight the need to extend ITS2 databases for greater regional representation. Until this is adequately addressed, we recommend that investigating taxonomic assignments to a genus level is the most robust approach for benthic monitoring using eDNA. Lastly, we found eDNA metabarcoding and conventional belt transect surveys each detected numerous unique hard coral genera, indicating that a combined approach provides the most effective way to audit benthic biodiversity. This point notwithstanding, eDNA metabarcoding had the power to distinguish similar diversity trends between sites to that determined by the belt transect methodology, validating the application of eDNA metabarcoding as either a stand-alone, or complementary technique for assessing sessile benthic taxa.

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Kimberley marine biota. History and environment

Cited by 21 publications

References 30 publications

Soft coral and sea fan (Octocorallia) biodiversity and distribution from a multitaxon survey (2009–2014) of the shallow tropical Kimberley, Western Australia

Soft coral and sea fan (Octocorallia) biodiversity and distribution from a multitaxon survey (2009–2014) of the shallow tropical Kimberley, Western Australia

Project methods and station geomorphology related to a multi-taxon survey (2009–2014) of the Kimberley

The applicability of eDNA metabarcoding approaches for sessile benthic surveying in the Kimberley region, north‐western Australia

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