Three new species of <i>Austrophlebioides</i> Campbell and Suter (Ephemeroptera: Leptophlebiidae: Atalophlebiinae) from the Wet Tropics bioregion of north‐eastern Australia

Christidis, Faye; Dean, John

doi:10.1111/j.1440-6055.2005.00453.x

Cited by 5 publications

(7 citation statements)

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“…analyses of assemblages across the U.S.A.; Gerth et al ., ). For example, in the Wet Tropics, there are subregional endemic species of Ephemeroptera (Christidis & Dean, ; Connolly et al ., ) and Parastacidae (Short & Davie, ), particularly on mountain tops and in subregions that have been biogeographically isolated in the past (Williams & Pearson, ); and there can be high diversity within taxa at single sites – for example, 51 species of Chironomidae and 59 of Trichoptera at Yuccabine Creek (Pearson, Benson & Smith, ) – and species within major taxa can have different habitat preferences (e.g. mayflies – Hearnden & Pearson, ; Chironomidae – Rae, ).…”

Section: Discussionmentioning

confidence: 99%

“…Similarity of stream faunas across the region is likely due to the uniformity of flow regimes, imparting temporal coherence across the region (Huttunen et al ., ), and of habitats, as suggested for fish (Pusey & Kennard, ). Ready dispersal by flying adult insects would have contributed to the similarities, especially given the likely great age of the Wet Tropics mountains and streams (Nott, ), although possibly not for the mountain‐dwelling endemics, such as leptophlebiid mayflies (Christidis & Dean, ), and flightless macroinvertebrates, such as atyid shrimp (Hurwood & Hughes, ). Limited endemism in the Wet Tropics vertebrate fauna has likely resulted from rainforest contractions during the Pleistocene (Williams & Pearson, ), which have also probably contributed to speciation in stream macroinvertebrates (Connolly et al ., ).…”

Section: Discussionmentioning

confidence: 99%

“…Across the Wet Tropics, uniformity and predictability of stream macroinvertebrate assemblages at the family level and moderate levels of subregional endemism (e.g. Short & Davie, ; Christidis & Dean, ; Connolly et al ., ) conform to the bioregional classification. The bioregion is distinguished from its neighbours and all others in Australia by its climate, which leads to perennial flows (Kennard et al ., ), its closed‐forest vegetation, and continuity of biological processes through the year (Pearson et al ., ).…”

Section: Discussionmentioning

confidence: 99%

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Stream macroinvertebrate assemblage uniformity and drivers in a tropical bioregion

et al. 2017

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Summary Understanding spatial and environmental drivers of undisturbed stream assemblages is important for separating natural and human‐induced changes, but has rarely been attempted for an entire tropical bioregion. We sampled riffle macroinvertebrate assemblages and measured associated biophysical variables in post‐wet and dry seasons from 68 streams of orders 1–5 across the Australian Wet Tropics, a small bioregion (18 497 km2) defined by its warm moist climate and closed‐forest vegetation. As climate and landscape were relatively uniform across the bioregion, we predicted that assemblages would be similar, with turnover (beta diversity) unrelated to distance, and with composition determined mainly by habitat. We identified 93 higher taxa. Density and richness of macroinvertebrates were greatest in the dry season because of habitat contraction and minimal flow disturbance. Richness was greatest in higher order streams. Relative abundance and richness of functional groups showed minor effects of catchment, lithology and stream order, and a positive relationship with altitude for richness of collectors, predators and shredders, and for abundance of shredders. Distance‐based linear modelling showed that among‐assemblage differences were explained by landscape‐scale variables (9.5% of the variation), stream size (13.0%), riparian characteristics (9.6%), water quality (4.6%), substratum (21.1%) and organic resources (22.4%); for models of individual taxa and functional groups, habitat and organic‐resource variables also predominated. Similarities among site assemblages differed little among catchments and there was no relationship between pairwise similarities of catchments and their geographical distances. Nestedness analysis confirmed that samples and catchment groupings were nested subsets of the total set of samples. Across the Australian Wet Tropics, uniformity of assemblages (identified to family or above) conformed to the bioregional classification, probably as a result of the great age of the region. The habitat variables that most influenced macroinvertebrate assemblages support the idea that a suite of biophysical influences is common to stream macroinvertebrate assemblages globally.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Stream macroinvertebrate assemblage uniformity and drivers in a tropical bioregion

et al. 2017

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“…Patterns of diversity vary among taxa. For example, endemic species of Ephemeroptera have restricted distributions (probably because of their short adult lives), limited dispersal abilities, and require cool streams (Christidis 2003, Christidis andDean 2005), whereas species of Trichoptera and Chironomidae are more widely distributed (McKie et al 2005, Connolly et al 2008). Gondwanan origins and endemism suggest that the QWT uplands are significant refugia because they were buffered against Pleistocene climatechange effects (McKie 2002, Pearson 2005, Krosch 2006).…”

Section: Biodiversity Ecology Evolution Biodiversity Of Qwt Streamsmentioning

confidence: 97%

Ecology of streams in a biogeographic isolate—the Queensland Wet Tropics, Australia

2015

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Global studies of streams are needed to develop general ecosystem and management models. We reviewed research that tested ecological models in streams of the Queensland Wet Tropics bioregion (QWT), which makes up 0.26% of Australia but supports distinctive and high biodiversity, most of which is of Gondwanan or marine origin. QWT streams have seasonal but perennial flow, high insolation, and higher diversity of riparian vegetation, invertebrates, and fish than temperate streams. Consistent physical conditions sustain biological processes through the year, and predictable wet seasons, but unpredictable floods, have shaped a resilient and opportunistic biota. Stream food webs are dominated by predators, and prey turnover is rapid. Small streams are heterotrophic and become autotrophic as canopies open in larger streams. Predation and competition influence assemblage composition most in the dry season, when habitats contract and densities increase. Riparian clearing, weed invasion, and agricultural contamination affect table lands and floodplains. High temperatures exacerbate weed growth and eutrophication, but contaminants may be diluted by high flows from forested catchments. Climate change probably will cause warming and greater hydrological seasonality, threatening endemic species. The biophysical characteristics of QWT streams are found elsewhere in the tropics, but the species pool is not. QWT streams are important because of their insular and remnant nature. Patterns and processes can differ between QWT and comparable temperate systems because of biogeographic and biophysical characteristics and their interactions with anthropogenic effects, exacerbated by the tropical climate. Research in the QWT both affirms and contradicts theories of stream ecology, underpins conservation and management needs of tropical streams, and provides points of reference for comparative studies in stream ecology, conservation, and management.

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“…and Campbell (1997), and the species decipiens Harker was transferred from Deleatidium to Austrophlebioides. A further Materials and methods three species: A. rieki, A. wooroonooran and A. porphyro-Phylogeny branchus, were described by Christidis and Dean (2005) taking Taxa the total number of species formally placed in the genus to eight. Several undescribed species believed to belong to Twelve species of the genus Austrophlebioides were included Austrophlebioides have also been recognised by Dean (1999), in the analysis (Table 1).…”

Section: Introductionmentioning

confidence: 99%

Phylogeny and distribution of the mayfly genus Austrophlebioides Campbell & Suter (Ephemeroptera:Leptophlebiidae)

Christidis

Dean²

2008

Invert. Systematics

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The mayfly genus Austrophlebioides Campbell & Suter, 1988 is endemic to Australia and is widely distributed in eastern Australia and Tasmania. Here, the phylogenetic relationships among species of Austrophlebioides are investigated using cladistic analyses based on morphological characters of the nymph and adult, and the first phylogenetic hypothesis for the genus is presented. The results from the phylogenetic analyses support the recognition of three monophyletic species-groups: the ‘rieki’, ‘pusillus’ and ‘marchanti’ clades. The ‘pusillus’ clade is the sister-group to the ‘rieki’ clade, and the clade comprising these two groups is sister to the ‘marchanti’ clade. Minimal overlap was observed in the geographic distribution of the three Austrophlebioides clades. The ‘rieki’ clade is confined to the Wet Tropics bioregion of north-eastern Queensland. The ‘pusillus’ clade is distributed from central-eastern Queensland to Victoria. The ‘marchanti’ clade occurs in southern New South Wales, Victoria and Tasmania. Distributional limits of the three clades correspond with the presence of recognised biogeographic barriers (Burdekin Gap, Hunter Valley and Bass Strait) suggesting that vicariance has been important in the differentiation of the group and in determining present-day distributions of species.

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Three new species of Austrophlebioides Campbell and Suter (Ephemeroptera: Leptophlebiidae: Atalophlebiinae) from the Wet Tropics bioregion of north‐eastern Australia

Cited by 5 publications

References 4 publications

Stream macroinvertebrate assemblage uniformity and drivers in a tropical bioregion

Stream macroinvertebrate assemblage uniformity and drivers in a tropical bioregion

Ecology of streams in a biogeographic isolate—the Queensland Wet Tropics, Australia

Phylogeny and distribution of the mayfly genus Austrophlebioides Campbell & Suter (Ephemeroptera:Leptophlebiidae)

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