Aquatic invertebrate community structure and phenology of the intermittent treed swamps of the semi-arid Paroo lowlands in Australia

Springer Science and Business Media LLC - Tập 30 - Trang 771-784 - 2021
Brian V. Timms1
1Centre for Ecosystem Science, School of Biology, Earth and Environmental Sciences, University of New South Wales, Kensington, Australia

Tóm tắt

The middle Paroo lowlands in semi-arid western New South Wales support numerous intermittent wetlands of various types. Differences between them are promoted by three ecological drivers: salinity, turbidity and hydroperiod. Community structure and phenology of the two most common types, saline lakes and claypans, are known but similar ecologies are lacking for the third most common wetland, the treed swamps. These are of six subtypes distinguished by dominant tree species, geomorphology and hydroperiod, all with similar community structure and phenology, but with differing invertebrate diversities. Summed diversity is not as high as in local creek pools, the shorter hydroperiods and simpler geomorphology of the treed swamps being restrictive so that there is almost no replacement of species during the early dominance of branchiopods and later of insects. Such treed swamps are uncommon in the semi-arid zone, but much more speciose treed swamps are known under similar and seasonally dry Mediterranean climates of the Western Australian Wheatbelt where hydroperiods are more stable.

Tài liệu tham khảo

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