Nowhere have I said that climate is not changing. I dont believe that the evidence supports a human cause however. Theres been some major screwing with climate data thats been recognized by several organizations and Im waiting for the "Self correcting" process.
AS far as the other issues , Im not sure that "genetic impoverishment" cannpt be handled by the already well known term "Extinction". ALl animals, so finely adapted to a particluar environment are actually trapped therein and should the environment change even moderately, many species are doomed to extinction or else they must co adapt.
The polar bear is an example. Heres a bear that arose from the brown bear and was adapted to an isce covered open sea environment (The bears speices name is Ursus maritimus). This bear is predicted to be "decimated" by climate change and has been a cause celebre for "man induced" climate change action. I can already see that polar bears are beginning to wander further inland and have been already mingling with their old parent species the brownie and the barren ground grizzly. CAn the bear adapt and hold on? I believe it can because its population is actually greater now than it has been in the past. I wonder what the reason is for that?
Blue green algae have migrated to beyond their classical northern limit in the Atlantic and Pacific and Indian Oceans (N and S). This algae is responsible for most of the production of molecular Oxygen (O2) in the atmosphere. The fact that this algae is spreading north is enough evidence that the climate is warming. However O2 has a reverse climatic effect that everyone seems to be ignoring (except guys at Penn State).
The ice core data shows several peaks of climate O16/O18 ratios in the north (these actually prove that the ratio was pointing to a warm climate several times in the past 125K0800K (BCE).
As the cold water (fresh water) locked up in ice becomes available to the entire mix, a drop in pH will be noted especially in N climates(Which seems to be what we see). Oceanic salinity has the effect of buffering the sea water
Out of those areas youve listed, the only one I feel strongly in an indictment of humans is inchemical pollution(mostly from third world nations and rapidly industrializing nations). We have screwed up the rivers of the US with coal and mineral mining of last century that it has become a big business opportunity for guys like Georgeob and I to help clean it up. (I specialize in mining out old mines and Titanium deposits that had been mined for iron in the past), but Ive seen everything from rivers where pH's are as low as 2 to lakes in which only spwecific bacteria (exytremophilics) can live.
However, we are seeing this being duplicated without any ontrols in places like Indonesia and China where they are only now beginning to be aware of the consequences of unregulated industrial growth.
Soil erosion has been an ag problem for years and the present "no till" farming methods has helped the US in controlling soil losses. However , No Till farming uses too much herbicide to control weeds and weeds are now evolving resistances and have actually adapted well to stuff like Roundup or Ally.
That sums up my opinions , Im sorry about my previous breakin but I felt that theres been a whole lot of insult that was being forwarded and when I saw George actually come down to CArolines level, I just thought Id give my 2 cents.