May 27, 2005

Walleye fry

There was a post on Primate Brow Flash about a ski resort in the canton of Uri in Switzerland. Over the last 20 years the glacier there has receded by 20 meters from one of the lifts. To solve the problem the resort had a glacier cover built that they spread out in the summer and then take in again for ski season. This got me started thinking. We all know about the headline-grabbing effects of global warming (increased temperature (NOAA) , epidemics), at least I think we all do, or at least should do. But nobody has really gone looking for the really obscure signs of global warming. Here goes!

1. This one is from a high level source at the Minnesota Department of Natural Resources. The DNR raises walleye fry in shallow ponds. It relies on these ponds freezing in the winter in order to clean out different predators. Recent winters have not been cold enough and so they have started cleaning them out using a product called Rotenone.

2. They have started to produce wine in England, Denmark, Pennsylvania and New York State. A few decades ago this wasn't possible, but the growing season is 2 to 3 weeks longer now each year, allowing the mediterannean vines to thrive at mid-latitudes.

3. This one is due to my brother Lowell-- opposums have been moving north steadily for decades. They used to only be found south of the Mason-Dixon line-- now they are moving into Canada.

4. They are planning a huge sea gate to prevent flooding in Venice, a consequence in part of higher sea levels.

1 Comments:

At May 27, 2005 10:32 AM , Anonymous Tim said...

I heard the car companies used to have cold-weather testing stations in Northern Minnesota (International Falls?) but it stopped getting cold enough on a regular basis so they moved them. I should put a disclaimer so the doubt industry doesn't jump on this comment as proof against global warming: I have not been able to find a reference to this story or to them ever being in Minnesota in the first place.

 

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