Thread: Thar extermination

The Minister is diligently doing the job for which she has been appointed, albeit coming to it with an anti introduced animal bias. I wouldn't like that job with all the vested interest groups wanting different things.
Any decisions that she make will be based on the information provided to her by DOC staff and it hasn't mattered who the Minister is the attitude towards Game animals by those entrenched staff has always been the same. The last Govt allowed WARO in the best trophy stag areas here in Canterbury for example. Has anyone got information about how DOC comes up with the population estimates ? I have seen the flight counts but don't know how DOC interpret these and then come up with such a wide variation (guess) with their population estimates.
Is there any good science to counter what DOC are saying or are they correct ?. I am sure that the Minister won't want to find out that the info she has been provided is wrong.

Can anyone tell me what the total annual harvest of Trophy bulls is ??
Why I am asking this is because I want to write to the Minister with some basic population modeling figures.
There is a great opportunity right now to keep the right ratio of animals and hopefully keep everyone happy

In a totally managed Trophy herd:
For every 1000 eight year old trophy Bulls there will be 1000 bulls aged 1,2,3,4,5,6,7 coming up. 8000 in total. 8000
To produce 1000 young bulls every year only 1333 nannies are required given that half will have twins. 150% kidding 1333
Tot 9333
+(166)
Harvest: Shot 1000 Bulls
A further 166 young nannies as 8% female replacements are required but 166 old nannies would be removed. 1000 yearling nannies shot

In an unmanaged herd there would be approximately equal numbers of male and female, so for every 1000 trophy bulls harvested there will be 8000 bulls and 8000 nannies but we only need 1333 nannies to maintain our Bull herd and replacement females. We have a surplus of nannies of 6667. This means that in an unmanaged herd like we have now, that for every Bull shot we should shoot 6.7 nannies in the first year to hold the population and that is if we are keeping bull numbers in check.

These figures are subject to some variables I know, but regardless they will give a good idea of the ratio of Bulls to Nannies that hunters should take and that the ratio of nannies that should be removed in the cull is much higher than the Doc figures.
Sorry about the figures not being lined up on this posting, each time I edit correct and save they get moved out of line again and makes it look like a balls up