a reply to: lostbook
First, I think your reading comprehension could use some work.
A study that was published last year in the journal Proceedings of the National Academy of Sciences showed that cross breeding between the two
species has existed since ages.
This is talking about hybrid polar bears and grizzlies. The article mentions that hybriziation is more common when the weather is warm, but if
hybridization has existed between the two species "since ages" that means that the weather only has to get to a certain degree of warm, a degree of
warm that is naturally possible, for this to occur.
It is not just man made changes that has an effect on the environment that causes this. It is also seen that in some cases, these hybrid animals
are a response to the changing environment. There was a new crossbred animal that was born when a sudden increase in the population of
white-tailed deer was seen on the East Coast of the US. The coywolf is a mixture of Western coyotes and wolves that hunts the deer. The coywolves are
strong and hunt in packs that it can also adapt to live near humans like the coyotes.
Now, let's address the coywolves.
This is incredibly poorly written, and the editor should be shot for allowing something so confusing to get to press. Basically, what this seems to be
saying is that man-made change isn't the only reason for hybridization, and that the coywolves are in fact an example of the latter, natural
environment changes causing them to hybridize.
They are citing the increase in White Tail Deer population as the cause of the rise of coywolves.
do they make the claim that Global Warming is actually the biggest reason of hybridization.
Global warming is the biggest cause of hybridization. With the melting of ice, more species of seals, whales and bears will cross breed with other
They do this without giving any direct examples of critters that hybridize solely because of Global Warming. Remember, the polar bear and grizzly have
been hybridizing all along ... long before global warming.
Oh, and the whoever edited this also missed that they should be using "clashing" instead of "crashing" when they are talking about the interaction of
the two bear populations. I'm sure I could find other issues in this article. Actually I have.
I'm betting that the coywolves really are caused by man in two different ways, neither of which have to do with glo0bal warming. One has to do with
our overhunting of wolves. They don't have enough mates of their own kind, so they breed with coyotes the next, best thing. And we have allowed deer
to overpopulate pretty much everywhere because we've killed off the dominate predators and anti-hunting types can't stand the thought of Bambi being
killed, so there is no proper cull. Hence the rampant deer population the article cites.
There. Had at. And I am no Republican.
edit on 21-8-2014 by ketsuko because: (no reason given)