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Geebung, Australia

Soleglad M.E.,PO Box 250 | Fet V.,Marshall University
ZooKeys | Year: 2010

Multiple populations of Hadrurus pinteri from Baja California Sur, Mexico have been examined. It is demonstrated that the southern populations of this species have a larger number of accessory trichobothria (neobothriotaxy) than the northern populations, numbers exceeding the maximum currently recorded for the genus. Examination of carapace and chela coloration and its patterns show a close affinity between H. pinteri and the dark phase of H. concolorous. A new morphometric ratio of the carapace is defined that distinguishes Hadrurus from Hoff mannihadrurus, further supporting the monophyly of the latter genus.©M.E. Soleglad, V. Fet.

The south-eastern subspecies of the Black-chinned Honeyeater Melithreptis gularis gularis is one of several bird species occurring in woodland and open forest habitats in south eastern Australia that have experienced serious population dcclincs in recent decades. Managing for the conservation of the Black-chinned Honeyeater, or decision-making with respect to the species in relation to development assessment, may be hindered by large gaps in our understanding of its basic biology and its low dctcctability. This study examined the floristic assemblages at locations at which the species has been recorded in the greater Brisbane region. Within the study area, the Black-chinned Honeyeater appears to be a habitat specialist, particularly favouring open forests in which Eucalyptus moluccana is a dominant species. It was also recorded in open forests dominated by Corymbia henryi and Eucalyptus fibrosa subsp. fibrosa.

Declines in populations of woodland birds in southern Australia have generally been attributed to historical and ongoing reductions in the area of tree cover and increasing fragmentation of timbered remnants. The extent of native grassy ground cover has received much less attention in studies of fragmentation despite the fact that a large proportion of declining woodland bird species forage predominantly within this stratum. In this study, records of the south-eastern subspecies of the Hooded Robin (Melanodryas cucullata cucullata), a subspecies formally recognised as threatened in New South Wales, were examined in relation to vegetation structure and configuration in the NSW South Western Slopes Bioregion. Logistic regression models were constructed using a presenceabsence dataset derived from Atlas of NSW Wildlife records and recent bird surveys and a small number of variables representing broad categories of native vegetation cover, including grassy ground cover. The models indicate a positive association between the presence of the Hooded Robin and the edges of open vegetation dominated by ungrazed or lightly grazed grassy ground cover in which species of native perennial tussock-grass predominate, adjoining timbered native vegetation cover, on moderately deep to deep soils. The study highlights the need to account for the range of vegetation types and conditions in variegated landscapes when investigating the habitat requirements of declining woodland birds, rather than relying on a simple binary 'woody/non-woody' classification. © 2010 Royal Australasian Ornithologists Union.

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