New website highlights the widespread problem of plastic debris
Microplastic pollution is widespread in many rivers flowing into the Great Lakes, according to U.S. Geological Survey scientists who recently took water samples from 29 Great Lakes tributaries in Minnesota, Wisconsin, Indiana, Michigan, Ohio and New York. The researchers found microplastics in all those streams, which together make up about 22 percent of the water flowing into the Great Lakes.
As if toxic waste from chemical manufacturing and other industrial processes weren’t enough, scientists say some streams are also being fouled by remnants of amphetamines — in some cases at high enough levels to alter the base of aquatic food chain.
A new study, published in the journal Environmental Science & Technology, traced the presence of illicit drugs at six stream sites around Baltimore, focusing on the Gwynns Falls watershed, which is part of the Baltimore Ecosystem Study Long-Term Ecological Research program. Two rural streams were also sampled in the Oregon Ridge watershed, the closest forested region. Continue reading “Study tracks amphetamine pollution in Baltimore streams”→
Activists plan lawsuit to win more environmental protection
Even with coral reefs around the world under the global warming gun, the U.S. Army Corps of Engineers is seeking approval for a controversial Florida dredging project that could smother parts of the only coastal barrier reef in the continental United States.
But a coalition of environmental and community groups have banded together to try and the the Corps to provide mandatory, common-sense protections for reefs near the Port Everglades dredging project near Fort Lauderdale. The project’s goal is to increase coastal access for larger ships. Continue reading “Florida harbor dredging threatens corals”→
Many streams are at risk from pharmaceutical pollution
Traces of pain-relieving substances, diabetes drugs and allergy medicines are widespread in small streams across the Southeast, especially in urban zones like Raleigh, North Carolina, the U.S. Geological Survey found in a new study.
National assessment helps pinpoint conservation issues
The health of American wetlands — at least what’s left of them — in the U.S. is a 50-50 proposition, according to the EPA, which this week released a first-ever national assessment of wetlands conditions, part of a national aquatic resource survey.
Wetlands, once maligned as no-good swamps, are critical for ecosystem health, water quality and flood attenuation, but development and agriculture have chipped away at the waterlogged areas for decades, leaving many degraded.
Scientists gain better understanding of health risks associated with microsystins
Taking a swim in a cool, clear stream on a hot summer day always seems like a good idea, but if you’re in the southeastern U.S., you may want to stop and think. According to a new U.S. Geological Survey study, close to 40 percent of the streams in the region may be contaminated by algal toxins known as microsystins.
Public health practitioners and medical researchers have observed a range of symptoms in humans after exposure to microcystins. Symptoms can include nausea, dermatitis and, in severe cases, liver failure. Toxicity issues have been reported for humans, companion animals, livestock and wildlife. Continue reading “Algal toxins found in many streams in the Southeast”→