By Sally Zimmerman, MNA Intern
Every Friday, MNA shares recent environmental news stories from around the state and country. Here’s some of what happened this week in environmental and nature news:
Bald eagles: A conservation success story (Mother Nature Network): Bald eagles in the United States are making a recovery. A pesticide called Kepone nearly wiped out the species in the 1960s and 1970s. Since then, the bald eagle has slowly been making a recovery, and was taken off the endangered list in 2007. Invasive species and other pesticides still threaten the bald eagle, but restoration efforts are ongoing. Bald eagles reside all across the United States, but are thriving the most along the James River in Virginia.
Great Lakes panel still waiting for legislative action on lake levels (Journal Sentinel): The Great Lakes Commission is still waiting on a request passed in 2007 to have the U.S. and Canadian governments figure out how to slow down the water flow in St. Clair River, which is heavily dredged. This would raise water levels on Lake Michigan and Lake Huron. The water levels of these lakes today is almost two feet lower than they would be if not for human interaction in St. Clair River. Some officials suggest an adjustable system that would allow the water flow to open or slow down on the river.
USFS: Hunter caused huge wildfire near Yosemite (Detroit Free Press): An illegal fire set by a hunter in Yosemite National Park is what caused the massive wildfire that covered 371 square miles and cost $81 million to contain. The hunter has not yet been arrested, as investigations are still going on. The U.S. Forest Service had banned fires in Yosemite National Park outside of controlled camping areas because of the high risk of wildfire. Officials say the wildfire is now 80 percent contained, having destroyed 111 structures since it started.
Climate change may speed up forests’ life cycles (Science Daily): A study conducted by a Duke University team suggests that in response to global warming, the life cycles of tree species are speeding up. One professor at Duke University, James S. Clark, said because of climate change, there are longer growing seasons for the trees and hotter temperatures. Studies conducted on 65 tree species in the 31 eastern states of the U.S. suggest that there is a higher rate of turnover in warmer climates. There are more young trees. Scientists believe eventually trees will migrate to cooler climates by seed dispersal.
Pollution in Florida’s Lake Okeechobee swells to near-disaster levels (Mother Nature Network): Lake Okeechobee in south Florida is one of the largest lakes in the United States, and is also one of the shallowest. At nine feet deep on average, the lake is potentially an environmental disaster because of its rising water level. Heavy downpour has caused the lake to rise to 15.5 feet, which some fear is too high. Already, the inflated lake has sent polluted runoff into nearby water systems. The polluted runoff is assisting the growth of toxic algae, which can kill many freshwater organisms. The pollution in the lake is also hurting tourism to the area and real estate prices.