Two new species of stygobitic Anzcyclops (Copepoda: Cyclopoida: Cyclopidae) from Australia

McRae, Jacquelyn; Karanovic, Tomislav; Halse, Stuart

doi:10.18195/issn.0312-3162.30(1).2015.033-051

Cited by 2 publications

(2 citation statements)

References 19 publications

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“…Our analyses estimating species richness across taxonomic levels indicates that up to 890–1450 troglofauna species inhabit the Pilbara, and up to 740–960 stygofauna species occur in the region. Ongoing taxonomic discovery and refinements (Baehr & Main, ; Brown, Finston, Humphreys, Eberhard, & Pinder, ; McRae, Karanovic, & Halse, ; Page et al., ; Trotter et al., ) are likely to result in even greater estimates of diversity for these groups (Halse, ). The data we have collated and analysed also demonstrate the inherent challenges in understanding and modelling spatial patterns in diversity for these groups: the survey data are spatially and environmentally biased (Figure ), there is high variability in the composition detected within any location (Supporting Information ) and a substantial proportion of records are taxonomically coarser than the species level for troglofauna (42%) and stygofauna (28%).…”

Section: Discussionmentioning

confidence: 99%

Riddles in the dark: Assessing diversity patterns for cryptic subterranean fauna of the Pilbara

Mokany

Harwood

Halse³

et al. 2018

Diversity and Distributions

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Aim: Spatial modelling can provide new understanding of patterns in biodiversity and help inform policy, planning and management decisions. However, for many taxa, in many regions, issues with currently available biological data curtail the application of spatial biodiversity models. Here we develop techniques to model spatial patterns of diverse subterranean invertebrate fauna (troglofauna and stygofauna) in the Pilbara region, to better inform biodiversity planning and management for these groups. In this context, the available data are highly biased in their distribution, with specimens often identified only at coarse taxonomic resolution, and individual community surveys sampling a relatively small proportion of the total assemblage at a location.Location: Pilbara bioregion, NW Australia. Methods:To overcome the challenges presented by the subterranean fauna data sets, we developed a community-level spatial biodiversity modelling framework, and applied this to model and project patterns in species richness and compositional turnover, for both troglofauna and stygofauna, using fine-resolution (~30 m) environmental layers. Results:While there was a large amount of inherent noise in the collated data, our spatial models detected potential environmental drivers of community diversity that align with existing knowledge. For troglofauna, species richness was associated with iron-bearing geologies, while community compositional turnover was most strongly related to geographic distance. For stygofauna, groundwater depth was the primary predictor for richness and turnover, alongside other physicochemical groundwater attributes. We identified areas of high biodiversity significance by combining richness and turnover predictions. Main Conclusions:The spatial projections from our biodiversity models indicate the importance of the central Hamersley Range in harbouring unique and diverse subterranean assemblages. These models and projections provide an advanced platform for various biodiversity assessments, including identifying priorities for new surveys, and assessing the likely impacts of proposed development activities on the long-term persistence of subterranean species in the Pilbara. K E Y W O R D S

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Section: Discussionmentioning

confidence: 99%

Riddles in the dark: Assessing diversity patterns for cryptic subterranean fauna of the Pilbara

Mokany

Harwood

Halse³

et al. 2018

Diversity and Distributions

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“…The diversity of the subterranean fauna discovered in the north of Western Australia (WA), and in particular in the Pilbara bioregion, has increased substantially in the past few decades (Eberhard et al, 2005;Halse et al, 2014) as a consequence of many surveys undertaken in compliance with WA legislation (Environmental Protection Authority, 2016Halse, 2018a). In this bioregion, potential impacts from mining developments can have major implications for subterranean fauna and their conservation, including loss of biodiversity and ecosystem services such as water purification and nutrient cycling (Boulton et al, 2008;Griebler & Avramov, 2015;Korbel & Hose, 2011;McRae et al, 2015;Saccò et al, 2022;Tang et al, 2008;Venarsky et al, 2022). Despite the ongoing efforts of taxonomic specialists over the last decade to describe the many taxa collected in the region (Giachino et al, 2021;Harvey et al, 2023;Karanovic, 2007;Karanovic, 2006;King et al, 2022;Perina et al, 2018Perina et al, , 2019aSmith et al, 2012;Stringer et al, 2022;Tang et al, 2008), the full extent of the diversity and species distributions of most subterranean fauna in the Pilbara is still poorly known.…”

Section: Introductionmentioning

confidence: 99%

An integrated study of Atopobathynella (Parabathynellidae, Bathynellacea) species reveals restricted distributions in a complex hydrogeological setting: two new species from the Pilbara (Australia)

Perina,

Camacho,

White

et al. 2024

Contrib. Zool.

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The Pilbara bioregion (Western Australia) has become a hotspot for subterranean fauna as a consequence of many surveys conducted to comply with Western Australian environmental regulation requirements. In this bioregion, mining developments can have major implications for subterranean fauna and their conservation. However the diversity and species distributions of most taxa are still poorly known, including the crustacean family Parabathynellidae. Recent studies on a widespread genus of this family (Atopobathynella) from the Pilbara highlighted several undescribed taxa with interesting patterns of distribution. In the Gudai Darri locality, the northern flank of the Hamersley Range occurs as a stepped escarpment intersected by dykes and gullies, with groundwater occurring within fractured rocks abutting the Fortescue River valley, where a separate regional aquifer occurs. This investigation aimed to observe whether stygofauna species distributions (1) reflected the separation between the two major aquifers within the Hamersley Range and the Fortescue Valley; and (2) were influenced by the presence of dykes. We examined the Atopobathynella species occurring in the study area using morphological and molecular data. The results reflected the hydrogeological complexity of the study area with six new lineages of Atopobathynella, recorded mainly in different gullies, that do not share a most recent common ancestor. Two species are described here A. pagetae sp. nov. and A. lythei sp. nov., and four additional species are delineated through preliminary morphological analyses and molecular data. This study will improve future environmental impact assessments and the understanding of Parabathynellidae taxa distribution in hydrogeological complex areas.

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Two new species of stygobitic Anzcyclops (Copepoda: Cyclopoida: Cyclopidae) from Australia

Abstract: -

Cited by 2 publications

References 19 publications

Riddles in the dark: Assessing diversity patterns for cryptic subterranean fauna of the Pilbara

Riddles in the dark: Assessing diversity patterns for cryptic subterranean fauna of the Pilbara

An integrated study of Atopobathynella (Parabathynellidae, Bathynellacea) species reveals restricted distributions in a complex hydrogeological setting: two new species from the Pilbara (Australia)

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