Zebra mussels need calcium (calcium carbonate) to build their shells and for reproduction. "Dissolved calcium in water is an essential constituent of shells for zebra mussels to grow from larvae to veligers and adults. It was shown that there is a significant relationship between calcium content and zebra mussel density." (G.L. Mackie et al., 1989)
Limestone is composed of forms of calcium carbonate — and the extensive use of limestone is a major part of how sulfide-mining companies claim they will control the leaching of heavy metals to Northern Minnesota waters. So Minnesota is spending millions to eradicate zebra mussels, while at the same time it is spending millions to promote an industry that will feed them.
It's going to be a prolific summer! |
Is it any wonder why Ms Zebra Mussel is laughing at us?
No comments:
Post a Comment