2013年7月11日星期四

Dingoes remain top predator despite control measures

Dingoes remain top predator despite control measures

Top predators like dingoes are often culled to protect livestock. It has been suggested that this practice may lead to increased numbers of next level predators such as red foxes, feral cats and goannas. This might then lead to a decrease in the numbers of smaller native prey normally eaten by these mesopredators, and ultimately a destruction of indigenous ecosystems.

Researchers from the University of Queensland set up specific areas with no baiting, and areas where dingoes were killed using poisoned bait within nine large cattle ranches across Australia -- in the same way as is normally practised in ranches. The effect of this on predator populations was monitored every three months for up to 5 years on each ranch.

Benjamin Allen who led the study explained, "In any particular season, at any site, there were more dingoes, foxes, cats, and goannas in unbaited rather than baited areas demonstrating that the mesopredators did not benefit from lower numbers of dingoes (and in the case of foxes, were also killed by the same bait). Dingo populations recovered to pre-control levels within months, which means that baiting does not create the conditions required for mesopredators to increase. This helps us to understand why, despite years of control measures the numbers of dingoes in Australia is at an all time high."


Welcome to SUV System Ltd!

SUV System Ltd is ISO 90012008 Certified electronics distributor with 10 years of experiences.

We have built up long term business relationship with about many companies which are stockers and authorized agents. we have a steady and reliable supply to meet customer's demands to the greatest extent .Confidently, we are able to lower your cost and support your business with our years of professional service.

SUV System Ltd is Electronic Components Distributor Supplies,Find Quality Electronic Components Supplies Products IC(Integrated Circuits),Connectors,Capacitor,Resistors,Diodes,Transistors,LED at Suvsystem.com. Sourcing Other Energy, Environment, Excess Inventory Products from Manufacturers and Suppliers at Suvsystem.com

Electronic Components distributor:http://www.suvsystem.com

Connectors Distributor:http://www.suvsystem.com/l/Connectors-1.html

IC Distributor:http://www.suvsystem.com/l/IC(Integrated-Circuits)-1.html

LED Distributor:http://www.suvsystem.com/l/LED-1.html

Capacitor Distributor:http://www.suvsystem.com/l/Capacitor-1.html

Transistor Distributor:http://www.suvsystem.com/l/Transistors-1.html

Resistor Distributor:http://www.suvsystem.com/l/Resistors-1.html

Diode Distributor:http://www.suvsystem.com/l/Diodes-1.html

SUV System Ltd insists on the managing faith ofsincereness,speciality,foresight, win-win,so we build up stable-relationship customers located all over the world, including the States, Europe, Argentina, UAE, Malaysia, Australia,and India etc

we are focus on the following fields,and hope we can help you.


Switches DIODES Transistors Multi-units Transistors YAGEO Resistors Civil IC NEC Transistors Current Sensors Resistors HARRIS IC ON Diodes INTERSIL IC Resistors Thin Film Resistors Capacitor Chip Ferrite Beads NXP Diodes Xilinx IC Switching Diodes Chip Inductors Vishay resistors Microchip IC Ligitek LED AD IC MAXIM IC About US NXP Transistors ELPIDA IC PANASONIC MURATA IC IC(Integrated Circuits) Fairchild Semiconductor Transistors Discrete Semiconductor Transistors TOSHIBA Diodes Connectors Zener Diodes Transistors Freescale Low Ohmic Resistors Texas Instruments(TI) IC Resistor Arrays Digital Transistors Chip Fuses
http://www.suvsystem.com/a/3637.aspx

没有评论:

发表评论