Topic
Ironbark
About: Ironbark is a research topic. Over the lifetime, 41 publications have been published within this topic receiving 643 citations.
Papers
TL;DR: The results show the dramatic impact that eucalypt flowering has on avian communities in south-eastern Australia, and the influence of habitat differences; although nectarivores move into the northern region of the study area to capitalize on winter flowering, they show high habitat specificity and virtually avoid the non-flowering stringybark habitats.
Abstract: The large-scale dynamics of bird communities in central Victoria, Australia, were studied in relation to eucalypt flowering by recording community changes throughout the annual cycle in sites north and south of the Great Dividing Range (GDR). Two kinds of forest habitat were considered, one of which flowers profusely in winter ('ironbark') while the other flowers little but over the warmer months ('stringybark'). There were eight sites, two of each habitat in both the northern and southern regions. In the absence of flowering in ironbark sites during summer, the avian communities of both kinds of habitat are virtually the same in each region. However, the sets of communities in each region differ significantly from one another at this time. With the onset of winter flowering, avian community composition in ironbark habitats in each region diverges greatly from the non-flowering ironbark and stringybark communities, but converges back to those communities as flowering declines. Most of these changes are due to the influx of high densities of nectarivores, especially honeyeaters and lorikeets. Such influxes in stringybark habitats did not occur, probably because the flowering intensity was at most an order of magnitude less than that in ironbark sites. The results show the dramatic impact that eucalypt flowering has on avian communities in south-eastern Australia, and the influence of habitat differences. Thus, although nectarivores move into the northern region of the study area to capitalize on winter flowering, they show high habitat specificity and virtually avoid the non-flowering stringybark habitats. The results are discussed in terms of landscape and regional dynamics of birds and the possible interactions among avian sub-communities (the 'nectarivores' and 'non-nectarivores').
60 citations
TL;DR: The redistribution of rainfall on silverleaf ironbark (Eucalyptus melanophloia) trees in a semiarid environment at Narayen Research Station has been studied using detailed measurements on four trees.
Abstract: The redistribution of rainfall on silverleaf ironbark (Eucalyptus melanophloia) trees in a semiarid environment at Narayen Research Station has been studied using detailed measurements on four trees.
Interception accounts for about 11% of the annual rainfall with only 0.6% as stem flow; canopy storage capacity is estimated to be 2 mm and an estimate of the rain required to initiate stem flow is 7 mm.
With the exception of nitrogen, the amounts of major elements returned to the soil surface beneath the tree canopy via through fall and stem flow is of the same order as that added by litter fall.
51 citations
1 Jan 1994
TL;DR: A three-year chemical knockdown study has been carried out in two western Australian forests, where jarrah Eucalyptus marginata and marri E. calophylla were sampled and one eastern Australian forest, where narrow-leaved ironbark E. crebra and grey box E. moluccana were sampled, where Hymenoptera, ColeopterA, Diptera and Araneae were the richest in species.
Abstract: A three-year chemical knockdown study has been carried out in one western Australian forest, where jarrah Eucalyptus marginata and marri E. calophylla were sampled and one eastern Australian forest, where narrow-leaved ironbark E. crebra and grey box E. moluccana were sampled. Hymenoptera, Coleoptera, Diptera and Araneae were the richest in species. Nine hundred and seventy-seven species in 173 families were found in the eastern Australian forest, while 691 species in 176 families were found in the western Australian forest. Only 53% of families were common to both forests. Reasons for these patterns are briefly discussed and arthropod species richness in eucalypt communities is contrasted to that in other forests. The implications of forest and land management practices for the conservation of arthropod richness are presented.
41 citations
TL;DR: Evidence indicates that the abundance and diversity of arthropods on a tree species is, to a large extent, a reflection of the tree in recent geological history, and this phenomenon flows through to the insectivorous birds which forage on these trees.
Abstract: As with most cities throughout the world, the Western Australian city of Perth is beautified with rows of street trees. Here, the choice of trees tends to be dictated by their hardiness and ease of cultivation (e.g., Queensland Box Lophostemon confertus), their perceived beauty (e.g., Lemon Scented Gum Eucalyptus citriodora) and the affiliation with species from regions where many of the settlers originated (e.g., London Plane Tree Platanus acerifolia). Evidence indicates that the abundance and diversity of arthropods on a tree species is, to a large extent, a reflection of the tree in recent geological history ? the more recent the arrival, the less arthropods are likely to occur on it (Southwood 1960, 1961). From work with native eucalypt species, Recher et al. (1996) have found that arthropod density and diversity differs markedly between tree species within an ecosystem, and this phenomenon flows through to the insectivorous birds which forage on these trees. Those species with high levels of arthropods, such as Narrow-leaved Ironbark E. crebra in New South Wales are visited by pardalotes, thornbills and weebills to a much greater extent than the co-dominant Grey Box E. moluccana (Recher et al. 1994).
36 citations
TL;DR: Black ironbark trees secrete nectar during the night, and Argentine ants collected 42% of the nectar before honeybees started foraging in the morning.
Abstract: Black ironbark trees secrete nectar during the night. Argentine ants collected 42% of the nectar before honeybees started foraging in the morning.
26 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2020 | 1 |
| 2019 | 1 |
| 2018 | 1 |
| 2016 | 1 |
| 2015 | 1 |
| 2012 | 1 |