Arid
Simulating kangaroo farming: extending GRASP to include kangaroo population density simulation.
Moloney, P. D.; Hearse, J. W.
通讯作者Moloney, P. D.
会议名称MSSANZ 19th Biennial Congress on Modelling and Simulation (MODSIM)
会议日期DEC 12-16, 2011
会议地点Perth, AUSTRALIA
英文摘要

It has been argued that converting some production in semi-arid rangelands from beef and wool to kangaroo commodities would have beneficial ecological and environmental consequences (Wilson and Edwards, 2008). The kangaroos ability to react to changes in weather could be used to mitigate the affect of droughts and post-drought recovery in marginal areas. Income from kangaroo harvesting during and after a drought could financially counter restocking costs of domestic animals, providing an incentive for landholders to consider diversifying into kangaroos.


A model was constructed to explore changes in kangaroo levels over time for a landholder farming kangaroos. The model developed uses a physiological structured population model (PSPM) in conjunction with GRASP to assess kangaroo population densities and harvest quantities. GRASP simulates the effect of weather, soil condition, and stocking rates of either cattle or sheep and the associated production of beef or wool. It does this diurnally through estimating the total standing dry matter (tsdm). GRASP has been validated for large sections of semi-arid rangelands in New South Wales and Queensland (Littleboy and McKeon, 2005).


Historical and simulated weather was used in simulations to analyse the model. The model was run using the previously included species of cattle, sheep as well as kangaroos. Comparisons were made between forage utilisation of the different species used for each commodity produced, beef, kangaroo meat, and wool. The comparisons were made using dry sheep equivalents (dse). The results in this study are in agreement with the most recent analysis on kangaroo dse (Munn et al., 2009). It is noted that the current kangaroo dse figure, with which this study concurs, is approximately half the figure that landholders often use (Grigg, 2002; Munn et al., 2009).


The simulated commodity production resulted in greater production from cattle in semi-arid rangelands. Implying that any financial analysis may favour cattle, unless the commodities from sheep and kangaroo have a much larger per unit value. This study highlights the impact of high juvenile mortality of kangaroos (Dawson, 1995) and endeavours to make harvesting a commercially viable option for landholders.


英文关键词Rangelands kangaroo GRASP physiological structured population model
来源出版物19TH INTERNATIONAL CONGRESS ON MODELLING AND SIMULATION (MODSIM2011)
出版年2011
页码822-828
EISBN978-0-9872143-1-7
出版者MODELLING & SIMULATION SOC AUSTRALIA & NEW ZEALAND INC
类型Proceedings Paper
语种英语
国家Australia
收录类别CPCI-S
WOS记录号WOS:000314989300110
WOS关键词RED ; AUSTRALIA
WOS类目Computer Science, Interdisciplinary Applications ; Operations Research & Management Science ; Mathematics, Applied
WOS研究方向Computer Science ; Operations Research & Management Science ; Mathematics
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/300342
作者单位RMIT Univ, Sch Math & Geospatial Sci, Melbourne, Vic 3001, Australia
推荐引用方式
GB/T 7714
Moloney, P. D.,Hearse, J. W.. Simulating kangaroo farming: extending GRASP to include kangaroo population density simulation.[C]:MODELLING & SIMULATION SOC AUSTRALIA & NEW ZEALAND INC,2011:822-828.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Moloney, P. D.]的文章
[Hearse, J. W.]的文章
百度学术
百度学术中相似的文章
[Moloney, P. D.]的文章
[Hearse, J. W.]的文章
必应学术
必应学术中相似的文章
[Moloney, P. D.]的文章
[Hearse, J. W.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。