Crustacean zooplankton assemblages in freshwaters of tropical Australia

Timms, Brian V.; Morton, D. W.

doi:10.1007/bf00008456

Cited by 24 publications

(21 citation statements)

References 29 publications

(40 reference statements)

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“…The same is true for aquatic invertebrates and the southern Carnarvon Basin appears to represent a zone where Bassian and Torresian biotic elements meet (see Serventy and Whittell, 1967). Examples of Torresian species that have extended their range southwards are the copepod Eudiaptomus lumholtzi (see Timms and Morton, 1988) and beetles Berosus dallasae and Hydroglyphus leai (see Watts, 1978Watts, , 1987. Examples of Bassian species extending north are the copepod Calamoecia tasmanica subattenuata (see Maly et al, 1997) and ostracods Mytilocypris mytiloides and Australocypris insularis (see De Deckker, 1978).…”

Section: Biogeographymentioning

confidence: 95%

“…Shiel and Koste, 1979) et al (1997) known only from the Paroo River region of New South Wales (Frey, 1991). Occurrence in the Carnarvon Basin of the calanoid copepod Eudiaptomus lumholtzi, common in northern Australia including the Kimberley (Timms and Morton, 1988), is a 1200 km southwards extension of the western range of the species. Similarly, records from the Carnarvon Basin extend the range of the anostracan Branchinella probiscida 2000 km south-westwards (see Geddes, 1981).…”

Section: Aquatic Invertebratesmentioning

confidence: 99%

See 1 more Smart Citation

Aquatic invertebrates and waterbirds of wetlands and rivers of the southern Carnarvon Basin, Western Australia

Halse¹,

Shiel²,

Storey³

et al. 2000

Rec West Aust Mus Sup

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-Fifty-six sites, representing 53 wetlands, were surveyed in the southern Carnarvon Basin in 1994 and 1995 with the aim of documenting the waterbird and aquatic invertebrate fauna of the region. Most sites were surveyed in both winter and summer, although some contained water only one occasion. Altogether 57 waterbird species were recorded, with 29 292 waterbirds of 25 species on Lake MacLeod in October 1994. River pools were shown to be relatively important for waterbirds, while many freshwater claypans were little used.At least 492 species of aquatic invertebrate were collected. The invertebrate fauna was characterized by the low frequency with which taxa occurred: a third of the species were collected at a single site on only one occasion. Patterns of occurrence were not strongly seasonal. Many undescribed species were found and many range extensions were. recorded, reflecting lack of previous aquatic invertebrate work in the region. The level of regional endemicity could not be assessed adequately, although it is probably comparatively low. In terms of their invertebrate fauna, five types of wetlands were distinguished: river pools, rock pools and larger flowing streams; seeps, springs and smaller creeks; freshwater claypans; birridas; and Lake MacLeod. Environmental factors to which invertebrates appeared to respond were ratio of calcium/ alkalinity, total dissolved solids, turbidity, colour, flow, longitude and nutrients, although some factors were inter-correlated.Additional surveys should find extra species of waterbird and, more particularly, aquatic invertebrate using wetlands of the southern Carnarvon Basin. For many invertebrates, occurrences are too sparse for effective protection of species within a nature reserve system and other mechanisms will be required to ensure their conservation. Comparison of site classifications based on waterbird, aquatic invertebrate and plant data showed patterns among sites identified using one element of the biota did not reflect patterns shown by other elements. This suggests that, until further work has identified an element that reflects the whole wetland community, as many biotic elements as possible should be surveyed.

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Section: Biogeographymentioning

confidence: 95%

Section: Aquatic Invertebratesmentioning

confidence: 99%

Aquatic invertebrates and waterbirds of wetlands and rivers of the southern Carnarvon Basin, Western Australia

Halse¹,

Shiel²,

Storey³

et al. 2000

Rec West Aust Mus Sup

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“…A more comprehensive study of the crustacean zooplankton of fresh waters in tropical Australia was that of Timms & Morton (1988). These authors found that throughout tropical Australia the eulimnetic zooplankton comprised 7 species of calanoid copepods, 5 of cyclopoid copepods and 12 of the Cladocera.…”

Section: Macrophytesmentioning

confidence: 99%

“…Ninety-six cladoceran species are known from tropical Australia, with up to 44 taxa recorded in areas of the Northern Territory and Queensland by Timms & Morton (1988), presumably including limnetic taxa. Twenty-eight of 35 cladoceran taxa recorded by Tait et al (1984) were littoral in habit; 37 of 43 recorded by Julli (1986) were littoral species.…”

Section: Macrophytesmentioning

confidence: 99%

Species richness in tropical fresh waters of Australia

Shiel

Williams

1990

Hydrobiologia

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General ecological expectations about the relationship between latitude and species richness are that at low latitudes (the tropics) species richness is greater than at higher latitudes (temperate and polar regions). Recent work suggests that this may not be the case for several habitat types and biological groups in Australia. Results are conflicting: on present evidence (admittedly sparse) it appears that in Australian tropical fresh waters species richness is generally depressed in zooplankton and littoral microfaunal communities, but not in macroinvertebrate communities in typical streams and in fish communities (and perhaps also in amphibian and reptile communities).The situation is indeterminate for tropical phytoplankton and macrophyte communities.

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“…Unfortunately, the type material of M. arnaudi is no longer available (Hamond, 1987), so the original description of Sars (1908), with its fine illustrations, is all that was left of the first Australian Metacyclops. An unnamed and as yet undescribed species of Metacyclops was reported by Timms and Morton (1988), but this genus does not appear to have a significant diversity in Australian surface waters, and certainly nothing that could be compared with other continents of the Southern Hemisphere (see Dussart and Defaye, 1985).…”

Section: Introductionmentioning

confidence: 99%