An overview of the impacts of feral cattle, water buffalo and pigs on the savannas, wetlands and biota of northern Australia

2021 ◽  
Author(s):  
Helenna Mihailou ◽  
Melanie Massaro
Keyword(s):  
Water Buffalo ◽  
Northern Australia

Seasonal movements and site utilisation by Asian water buffalo (Bubalus bubalis) in tropical savannas and floodplains of northern Australia

2020 ◽  
Author(s):  
Hamish A. Campbell ◽  
David A. Loewensteiner ◽  
Brett P. Murphy ◽  
Stewart Pittard ◽  
Clive R. McMahon
Keyword(s):  
Water Buffalo ◽  
Bubalus Bubalis ◽  
Northern Australia ◽  
Tropical Savannas ◽  
Seasonal Movements ◽  
Asian Water

Juvenile tree growth and demography in response to feral water buffalo in savannas of northern Australia: an experimental field study in Kakadu National Park

2006 ◽  
Vol 54 (3) ◽  
pp. 283 ◽  
Author(s):  
P. A. Werner ◽  
I. D. Cowie ◽  
J. S. Cusack
Keyword(s):  
Field Study ◽  
Tree Growth ◽  
National Park ◽  
Water Buffalo ◽  
Ground Level ◽  
Northern Australia ◽  
Growth And Survival ◽  
Major Mechanism ◽  
Scale Experiment ◽  
Juvenile Plants

Tree populations in the wooded savannas of northern Australia lack a well developed seed bank, but instead rely on a persistent ground layer of suppressed juvenile plants <1 m of indeterminate ages. The feral Asian water buffalo has been implicated as a factor in inhibiting the movement of juvenile trees to sapling stage. In a 6-year field study in Kakadu National Park, 656 juvenile plants were monitored for growth and survival, and in exploring the effects of buffalo, clipping surrounding vegetation and ambient fire. Buffalo were removed from one half of the sites across an environmental gradient in a landscape-scale experiment. Juvenile trees grew more slowly but fewer became dormant where buffalo were absent. Experimental clipping of surrounding vegetation produced significantly increased height at the buffalo-absent sites, but not at the buffalo-present sites, demonstrating that the positive effect of buffalo on growth was indirect, by reducing the competitive regime for juvenile trees. Within 3 years of removal of buffalo, ground-level green biomass increased 2–10 times and litter 1.3–2 times over a topographic gradient. Mortality of juvenile trees was not significantly different between buffalo-present and buffalo-absent sites when plots remained unburnt. By contrast, at buffalo-absent sites, three times more juveniles died after late dry-season fires than at unburnt sites, but there was no difference among buffalo-present sites. Overall, the total juvenile tree bank decreased by 7% where buffalo grazed and by 18% where buffalo had been removed. The study demonstrated a major mechanism(s) responsible for recorded changes in vegetation patterns of these savannas, whereby buffalo initiate a cascade of effects by changing ground-level biomass, which change competitive relationships and fuel loads, which then have an impact on tree growth and demography. The results are discussed with respect to dynamics of the juvenile tree bank and implications for long-term sustainability of these wooded savannas.

Distribution, seasonal movements and habitat utilisation of an endangered shark, Glyphis glyphis, from northern Australia

2017 ◽  
Vol 573 ◽  
pp. 203-213 ◽  
Author(s):  
BJ Lyon ◽  
RG Dwyer ◽  
RD Pillans ◽  
HA Campbell ◽  
CE Franklin
Keyword(s):  
Northern Australia ◽  
Seasonal Movements

Discriminatory Taxation in Light of Fortescue: Its Implications for the Development of Northern Australia

2014 ◽  
Vol 42 (1) ◽  
pp. 1-23
Author(s):  
Anthony Gray
Keyword(s):  
Federal Government ◽  
Court Decision ◽  
Northern Australia ◽  
High Court ◽  
The North ◽  
Northern Regions ◽  
Word Discrimination ◽  
Taxation System

In the recent Fortescue decision, the High Court made some interesting observations regarding interpretation of the word ‘discrimination’ in the context of the Federal Government's power with respect to taxation in s 51(2) of the Australian Constitution. Coincidentally, the Federal Government has commenced consideration of options for the development of northern regions of Australia. Of course, one option would be to introduce a variable taxation system to encourage businesses and individuals to be based, and/or invest, in northern Australia. This article considers possible constitutional issues associated with variable taxation schemes overtly favouring businesses and individuals based in the ‘north’, given the recent High Court decision.

Matries and Subsections: Bodies and Social Personae in Northern Australia

2016 ◽  
Vol 57 (3) ◽  
pp. 229-274 ◽  
Author(s):  
Mark Harvey ◽  
Murray Garde
Keyword(s):  
Northern Australia
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