Canadian Press: Shrimp can provide valuable insight into broad changes in the marine ecosystem, according to a new study that found the spindly crustaceans serve as canaries in the coal mine when it comes to warming waters and the health of fish stocks. The research by an international team of scientists and led by Canada showed for the first time how much the heavily harvested Northern shrimp rely on water temperatures and algae blooms for their survival. Peter Koeller, a Canadian fisheries …