| Subject: | |
| From: | |
| Reply To: | Iowa Discussion, Alerts and Announcements |
| Date: | Wed, 16 Dec 2009 12:00:59 -0600 |
| Content-Type: | text/plain |
| Parts/Attachments: |
|
|
I am glad of one thing, this issue has produced an interesting
discussion on this web site. It seems to me there used to be such
discussions, but that ended a couple years ago. Now it seems the most
frequent info from the site is the latest sewage spill.
It seems the discussion has tended to nit-pick the details, but ignore
my main point. Is it really worth the cost in bad public relations to
promote mountain lions in Iowa?
But, nit picking the details is also fun.
-A comment from Bill--dogs will also kill deer, especially in deep
snow. Is it better from deer to die by a gun shot or being eaten alive
by a pack of dogs?
-I wouldn't shoot the mountain lion because other people were afraid of
them, or from my own fear. I would claim a healthy respect for the
lions. Whether you would or would not shoot the lion is simply a matter
that good people have different FEELINGS about.
-On that salt lick with birth control drug--I watch my science journals
for any result where dear birth control has worked in a wild or captive
population. I may have missed something and the technology keeps
improving--but what I read of birth control efforts have produced
miserable failures. That is contrary to the claim of wishful thinking
animal rights groups. One method of birth control involved twice
shooting the deer with a dart gun with a pharmaceutical. That also
required an external mark on the deer since you had to know if that was
dose one or two. After the first shot deer would not come anywhere near
the baiting station where they has been shot the first time. I believe
that was on Long Island in NY. Baiting stations with drugged bait
seemed promising, but it required repeat visits to the bait. The deer
came for awhile, but then decided they wanted acorns in their diet and
move away and got insufficient doses of the drug. Birth control in a
large fenced population at a government facility brought dramatic
reductions the first year, but even with continued efforts they found 2
yrs later that the herd had returned to its high numbers. I loved the
proposal that we could use a virus to sterilize deer. What if it
mutated and got into my daughter?
-In theory ecosystem management is a good thing with predators that
control herbivores and low enough levels of herbivores to avoid impacts
to uncommon or rare species such as plants. However, with our heavily
impact agro-ecosystem that is really impractical.
-I think a good question is what is causing the increase in deer
populations in Iowa and, as mentioned, in Wisconsin. The classic
ecology text would say thecause is the abundance of edge habitat. I
would guess edges in Iowa are unchanged of have even decreased (with
large farms and farm fields) over the last several decades. I would
hypothesize that the milder winters due to global warming are the
(somewhat difficult to prove) cause.
Lanny Schwartz
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
To unsubscribe from the IOWA-TOPICS list, send any message to:
[log in to unmask]
Check out our Listserv Lists support site for more information:
http://www.sierraclub.org/lists/faq.asp
To view the Sierra Club List Terms & Conditions, see:
http://www.sierraclub.org/lists/terms.asp
|
|
|