We have talked about the growing problem of toxic algal blooms on a number of occasions. The increasing occurrence of these blooms has been associated with rising temperatures and carbon dioxide levels as well as the presence of wastewater nutrients and agricultural fertilizers in rivers, lakes and reservoirs. The most notable incident occurred in the summer of 2014, when algae contamination in Lake Erie left 400,000 residents in Ohio and Michigan without water for 72 hours.
Spring is the time of the great monarch migration when the butterflies leave their wintering grounds in Mexico and head north to Canada. As we have been saying for quite some time, fewer and fewer butterflies have been making the trek each year. Twenty years ago, a billion monarchs swarmed the winter site in Mexico. In 2013, the number was down to 33 million.
We have done a number of stories about the sad state of the monarch butterfly and how their numbers have dropped from a billion to only 33 million as of a couple of years ago. Biologists in the U.S. have been trying to restore the summer habitat of the butterflies by urging the planting of milkweed, which is the primary host plants for monarch butterfly caterpillars.
The recent Paris summit on climate change produced a global treaty to reduce greenhouse gas emissions. There are multiple strategies to reduce emissions including both technological and economic ones.
There has been plenty of discussion of El Niño, the periodic weather phenomenon in which prevailing easterly winds in the Pacific Ocean weaken, allowing warm water to move eastward and wreak havoc with the weather in North and South America. The current El Niño is a particularly strong one; some say it may be one of the strongest ever and are calling it the “Godzilla El Niño.”
It’s no secret that ocean waters are warming, especially in New England. The waters in the Gulf of Maine are warming 99% faster than the rest of the world’s oceans. What’s the problem? Well, lobsters like cold water, and as a result, they’re heading north.