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Very Hot Topic (More than 100 Replies) 1080 - Monitoring a sika deer population with trail cameras (Read 8213 times)
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1080 - Monitoring a sika deer population with trail cameras
Aug 3rd, 2018 at 3:20pm
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https://www.landcareresearch.co.nz/publications/newsletters/kararehe-kino/karare...

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Importantly, there was no discernible change in sika deer sighting rates in either the poisoned or non-poisoned areas after the poison drop: deer sighting rates remained fairly constant for the next 4 weeks (Figure 2), regardless of area.


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However, the team wanted to look further into the issue of possible 1080 effects on the sika deer population in the Paemahi area. Based on camera sightings they estimated deer density across the region using three different extrapolation methods. Next, they conducted systematic ground searches over the baited area and counted and collected tissue for poison residue analysis from any deer carcasses they found. This provided a more detailed picture: 11 dead sika deer were found after the 1080 bait drop and all had 1080 residues. Averaged for the area as a whole, this equated to 1.6 carcasses per square kilometre, and accordingly the team estimated that approximately 10% of the sika population would have succumbed to 1080 poisoning. While this figure is at the upper end of the expected mortality if EDR is effective, the result did serve to illustrate an important point: for a high-density population such as that in the Paemahi area, 10% incidental deaths from a 1080 bait operation is likely to be negligible for the population of deer, with sika numbers likely to recover rapidly through increased reproduction and fawn survival as the result of more available food.
  
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Re: 1080 - Monitoring a sika deer population with trail cameras
Reply #1 - Aug 3rd, 2018 at 4:20pm
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Actually, when I read this report which contains nil base data I am sceptical of the conclusions.
It claims 10% deer kill in EDR 1080 treated areas AND 1.6 deer killed per sq km. This assumes a pre existent population of 16 deer per sq km and I find this difficult to believe.
Then, the chart shows a population decrease perhaps from 5 to 3 which indicates a 40% reduction well after the stags had migrated; not 10%. The analytical base data and calculations need to be published. Also, there seems to be no monitoring of deer migrating back into the area/s at intervals after the drops. How was each deer reliably and uniquely identified over thhe period?
  

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Re: 1080 - Monitoring a sika deer population with trail cameras
Reply #2 - Aug 3rd, 2018 at 4:36pm
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A deer every 6.25 hectares pre drop population?? Nup.
  

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Re: 1080 - Monitoring a sika deer population with trail cameras
Reply #3 - Aug 3rd, 2018 at 6:23pm
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That " study" funded as " Contracted Science" by the animal health board. The AHB contracted the poisoning operations over the Kaimanawa RHA for years and intend to continue even though there has been no Tb found there since 1990.
" Contract Science" funded by the poidon bureacracy .
  

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Re: 1080 - Monitoring a sika deer population with trail cameras
Reply #4 - Aug 3rd, 2018 at 6:38pm
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And how come the "Stag migration" out of the EDR 1080 area was so much less than in the other area?.And where did they go?
  

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Re: 1080 - Monitoring a sika deer population with trail cameras
Reply #5 - Aug 3rd, 2018 at 9:15pm
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huntnfish wrote on Aug 3rd, 2018 at 4:20pm:
Actually, when I read this report which contains nil base data I am sceptical of the conclusions.
It claims 10% deer kill in EDR 1080 treated areas AND 1.6 deer killed per sq km. This assumes a pre existent population of 16 deer per sq km and I find this difficult to believe.
Then, the chart shows a population decrease perhaps from 5 to 3 which indicates a 40% reduction well after the stags had migrated; not 10%. The analytical base data and calculations need to be published. Also, there seems to be no monitoring of deer migrating back into the area/s at intervals after the drops. How was each deer reliably and uniquely identified over thhe period?


The graph also shows a reduction in those counts 5 days before the drop (to the level 3)
perhaps the knew 1080 was coming and buggered off Smiley


  
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Re: 1080 - Monitoring a sika deer population with trail cameras
Reply #6 - Aug 4th, 2018 at 8:18am
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There is a lots of conjecture (putting it very politely) in that report. Typical of "contracted "science". The fox has been in the henhouse writing a report of the number of chickens  Roll Eyes
  

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Re: 1080 - Monitoring a sika deer population with trail cameras
Reply #7 - Aug 4th, 2018 at 10:29am
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just another bullshit report huntfish, would'nt trust anything ospri print out
  
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Re: 1080 - Monitoring a sika deer population with trail cameras
Reply #8 - Aug 4th, 2018 at 12:22pm
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What is most disturbing is that Landcare Research published it. Let themselves down.
  

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Re: 1080 - Monitoring a sika deer population with trail cameras
Reply #9 - Aug 4th, 2018 at 1:09pm
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What would us dumb hunters know about stats and analysis eh.... 

The point of it will be to give the politicians a "reasonable case" to justify what they do next.
  
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Re: 1080 - Monitoring a sika deer population with trail cameras
Reply #10 - Aug 4th, 2018 at 3:31pm
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huntnfish if youre that unhappy about the potential/probable biased report why dont you crowdfund to get an independant study done?  my bet is 99% of hunters as per jtsual will voice support but when it comes to it wont do jack sh*t.

id almost trust the above report more then if it were to be undertaken by antis. at least these guys have spent some $$$  and actually spent the time to undertake it.
  
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Re: 1080 - Monitoring a sika deer population with trail cameras
Reply #11 - Aug 4th, 2018 at 4:28pm
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You can buy a big white hanky to blub into at the warehouse bro. Face reality.
  

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Re: 1080 - Monitoring a sika deer population with trail cameras
Reply #12 - Aug 4th, 2018 at 4:49pm
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im not the one having a cry mate.  if you want to pick holes in a report then how about you provide us one to pick at?

Disagree with the density stated then why? Did you do pellet counts, camera observations, wild guess or a failed hunt?


  
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Re: 1080 - Monitoring a sika deer population with trail cameras
Reply #13 - Aug 4th, 2018 at 7:06pm
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In fairness it does ‘look’ reasonably honest
But
It’s only 1 Report, it does have a heap of conjecture around deer numbers - sika being territorial I’d expect that the cameras caputured the same resident deer a number of time - nowhere in the report does it say anything about positive ID of separate deer, only deer images captured by Trail Camera. Same with Possums
It’s a good attempt to justify 1080 but it still falls well short of ‘good science’
  

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Re: 1080 - Monitoring a sika deer population with trail cameras
Reply #14 - Aug 4th, 2018 at 7:25pm
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anyone in or hunt the poisoned area post poisoning and how many dead deer were seen?
  
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