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over-abundance

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Book Chapter
Series: Other RZS NSW Publications
Publisher: Royal Zoological Society of New South Wales
Published: 01 January 2007
10.7882/FS.2007.022
EISBN: 978-0-9803272-1-2
... Little is known about the effect of environmental variables on the nutrition of large numbers of wild kangaroos. Faecal Near Infrared Reflectance Spectroscopy (FNIRS) can predict dietary and non-dietary data on free-ranging deer and cattle and assist with management. Why not other over-abundant...
Book Chapter
Series: Other RZS NSW Publications
Publisher: Royal Zoological Society of New South Wales
Published: 01 January 2007
10.7882/FS.2007.026
EISBN: 978-0-9803272-1-2
.... Importantly, our review found no published, quantitative evidence that the incursion of exotic plants into native vegetation leads to the over-abundance of any bird or mammal species. Nevertheless, the results of our review must be viewed as preliminary findings: there is still much to be done to untangle...
Journal Articles
Australian Zoologist (2023) 43 (1): 15–36.
Published: 02 February 2023
...Harry F. Recher ABSTRACT The Yellow-plumed Honeyeater Lichenostomus (Ptilotula) ornatus is a short-billed honeyeater which has declined in abundance over its range in Western Australia (WA), but remains abundant in the Great Western Woodland (GWW) where this study was conducted. It is also found...
Journal Articles
Australian Zoologist (2018) 39 (4): 646–657.
Published: 01 December 2018
... are poorly understood. We pitfall-trapped ants in winter and spring over a twenty-two year period (1992–2013) in the Simpson Desert, central Australia. We asked: over what time-scale does ant activity (abundance and species richness) respond to climate (temperature and precipitation) and vegetation (plant...
Journal Articles
Australian Zoologist (2014) 31 (1): 11–27.
Published: 17 March 2014
... greater than acknowledged. Over most of southern Australia entire avifaunas are threatened with extinction. When allowance is made for habitat loss and degradation, 30 to 90% of bird species across the continent have declined in abundance. The extent of this decline is that the survival of many bird...
Journal Articles
Journal Articles
Australian Zoologist (2022) 42 (2): 278–303.
Published: 24 June 2022
... of individuals (as above). Although mammal abundance declined in all sites after the fire in 2013, the magnitude of decline was significantly greater at Impact sites for the 3.0 years post-fire (Pinteraction<0.001; Table 3; Table 4; Figure 5a). Mammal species richness was significantly lower in Impact sites over...
Journal Articles
Australian Zoologist (2014) 31 (1): 230–239.
Published: 17 March 2014
..., at the permanent pond there were changes through time in both plant and frog species. As the pond aged, the relative abundance of various species of emergent aquatic plants changed, the area of open water steadily decreased, and the depth decreased. Over the same period, the relative abundance of several frog...
Journal Articles
Journal Articles
Australian Zoologist (2020) 41 (3): 459–466.
Published: 09 October 2020
... attempt to rest paddocks by removing stock simply created grazing opportunities for the abundant kangaroos, with consequent loss of feed for cattle, consistent over-grazing, and declining environmental conditions. Feral pigs were abundant along the river channels. I recall seeing at times up to 300 pigs...
Journal Articles
Australian Zoologist (2022) 42 (4): 960–971.
Published: 21 October 2022
... on the seed of Double Gee Emex australis , an introduced, prolific, agricultural weed. When incubating and raising young nestlings, parents foraged within 5 km of their breeding area. However, once their nestlings were older, they often foraged more than 20 km from their nest hollows, commuting over an hour...
Journal Articles
Australian Zoologist (2020) 41 (2): 231–240.
Published: 11 November 2020
... periods for wildlife and conservation management; the implementation of robust long term adaptive monitoring programs to track the changes of wildlife diversity and abundance over time, are essential for the assessment of improved management of ecosystems and natural resources (Lindenmayer and Likens 2009...
Journal Articles
Australian Zoologist (2014) 37 (2): 129–133.
Published: 12 September 2014
... (A, B, C, D), habitat type and interaction on the number of captures. The data used in the analysis were the total abundance per family in each bucket over the four day trapping period for each of the 263 sites sampled. We used Statistica for all analyses (StatSoft Inc. 2011). Significance is accepted...
Journal Articles
Australian Zoologist (2014) 29 (1-2): 3–41.
Published: 17 March 2014
.... Other impacts on aquatic environments include the removal of riparian vegetation and the draining of wetlands, changes of flow regimes, dredging of channels, pollution of water from domestic, industrial and agricultural sources, changes in salinity, eutrophication of wetlands and the over-exploitation...
Journal Articles
Journal Articles
Australian Zoologist (2014) 32 (3): 401–405.
Published: 17 March 2014
... there was no defined trend over time. Intra-clutch variation in weight achieved (over 10 weeks) was greater than among clutches. Ability to take advantage of breeding habitat that is sub-optimal for other species, the ability to breed year around and larval growth plasticity have apparently pre-adapted this species...
Journal Articles
Australian Zoologist (2014) 30 (2): 143–149.
Published: 17 March 2014
..., a frog species once common to permanent water-bodies of south- eastern Australia, has undergone a decline in its distribution and abundance over the past 15 years (Osbnrne 1986; Mahony 1993; Daly 1995; Osborne et al. 1996). In New South Wales, it is recognized as a "threatened species (Schedule 12, NSW...
Journal Articles
Australian Zoologist (2016) 38 (1): 1–15.
Published: 01 January 2016
..., and grazing. The reason for the continued abundance and diversity of species through the winter can be explained by the variety of food resources available for birds; the complexity of foliage, bark, and ground substrates provided a wide range of foraging substrates over the entire vertical profile...
Book Chapter
Series: Other RZS NSW Publications
Publisher: Royal Zoological Society of New South Wales
Published: 01 January 2011
10.7882/FS.2011.009
EISBN: 978-0-9803272-4-3
... in abundance overlain on highly variable day-to-day patterns of roost use. Although the presence of individual, high site fidelity behaviour could not be precluded, the high turnover of flying-fox numbers on a within-tree basis precludes the presence of highly stable social groups, over the duration...
Journal Articles
Australian Zoologist (2018) 39 (4): 658–668.
Published: 01 December 2018
...Bradley S. Law ABSTRACT Long-term research is vital for understanding long-lived, dynamic systems like forests, yet for bats such research is notable for its absence. Recent advances in technology over the last 10–20 years means that long-term studies of bats are viable and can be cost-effective. I...