It means one species is going to be lost to the world for ever and another destructive one is going to take it's place. Thats very sad in my opinion
It IS sad, and the pretty much sums the history of life thus far. Species WILL go extinct one way or another. I suspect the same will apply to us somewhere down the track.
Does that mean we should do nothing and let dominant species cause the extinction of another? Or should we take the conservationist approach and eliminate introduced species to allow existing species to flourish? What are the ramifications and possibly unseen ramifications, for both views and outcomes? I don't know.
I do know that taking life should not be treated lightly.
But isn't inaction taking life, taking the life of a whole species? I honestly think it's a joke that people think that an animal that was let loose in Australia, (and is causing the demise of a native species) should be left to roam free just because that animal doesn't deserve to fell pain because of our mistakes.
Well yes and no, and that's precisely my point: No matter what you do or don't do, some animal loses out. Inaction may very well mean life lost, just as much as taking action would. To some people the issue may be about pain, to others it may be to do with the loss of life - the ultimate loss. Is it fair to a feral cat that it must be denied its existence because we discriminate against it so that other species can flourish? Or, is it fair that 'native' species must starve to death or be hunted to extinction because of an introduced species? I think the opinion you form depends on where your values lie and how you interpret the world.
If you are of the opinion that we deem a species as introduced and not belonging to the environment and thus must be eliminated, or at the very least, controlled, then that can set up a very dangerous attitude. It's based on the premise of not-belonging', much in the same way current attitudes persist over the issue of asylum seekers or even immigration, where certain cultures are ill-favoured and viewed as incompatible with Australian culture (whatever that is). When that happens, it's very likely that any compassion or consideration we attribute to animals is waived, and it can give license to some very atrocious acts in the name of culling introduced species. An excuse to kill, maim, torture, if you will. Why not? They don't belong here, they destroy habitat, and they threaten our native fauna (e.g. cane toads).
And why would we stop there? If protecting native species is our objective, then we seriously need to take a good look at ourselves. Species extinction caused by introduced species pales by comparison to human development. We are the number one causal factor in species extinction. And if you take the climate change view, we can rant and rave and act on the issue of introduced species all we want, it won't make a difference when habitat is destroyed/diminished due to a changing climate.
Also...
The human factor aside (and it's a big BIG one), how can we let native fauna be subject to extinction due to us twits bringing in animals from overseas that haven't evolved in our environment? If we don't act, we condemn so many species to starvation and death at the expense of our ignorant actions. Surely we must do something...
^These are some of the things I think can be raised. You can go a whole lot deeper and challenge the nature of ecosystems and human knowledge on what an environment is, how we think the 'natural' world operates or should operate, and what we mean by natural (e.g Is a computer natural? Isn't it just a production of our ingenuity, something that has come from evolution, /natural/ evolution?)