NEW HOPE, Pa. -- A dam removal project is having a positive impact on the Delaware River's ecosystem, including a boost to the population of migratory fish.
Removal of the Columbia dam on the Paulins Kill in New Jersey has given migrating shad and sea lamprey access to 20 miles of spawning waterways that had been inaccessible for a century.
Shad are especially important for fishing in the Delaware where there are shad festivals and fishing contests.
But Beth Styler Barry, director of river restoration for The Nature Conservancy in New Jersey, points out that people aren't the only ones who will benefit from increasing the number of fish in the river.
"More shad means more food for things like eagles, heron, bears, otter," she states. "It brings an additional source of nutrition to the entire ecosystem."
Removing the dam also made it possible to restore 32 acres of floodplain that had been covered by the water behind the dam.
Kent Smith, chief of the steering committee for the Atlantic Coastal Fish Habitat Partnership, says the dam removal project on the Paulins Kill is a good example of restoring what environmentalists call white water-to-blue water connectivity.
"You allow for natural tidal cycles," he explains. "Freshwater lenses can flow out over the surface of the estuaries and animals like American shad have the ability to move into their freshwater habitat to complete their life cycle."
Shad started returning to the area less than three weeks after dam removal was completed last year and this year breeding sea lampreys also have been observed.
Barry points out that the restoration brings a number of environmental benefits including washing away built-up sediment and improved water quality.
"The Delaware as a whole is continuing to improve as an ecosystem and, especially as climate changes, the cooler water will be more and more important not only for spawning and feeding but for the temperature refuge," she states.
Two more dams on the Paulins Kill will be removed over the next two years, giving migrating fish access to 45 miles of rivers for spawning and improved habitat for resident species.
Support for this reporting was provided by The Pew Charitable Trusts.
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As West Virginia opens its door to the plastics recycling or "advanced recycling" industry, a recent report found only a fraction of plastics are recycled and plastics labeled as biodegradable in reality can take years to degrade.
One study found biodegradable plastic bags were still fully intact after three years of being buried in the soil. There are currently no federal standards regulating bioplastics, or products claiming to be biodegradable or compostable.
Judith Enck, president of the group Beyond Plastics, said the plastic recycling plants being built in Appalachia increase exposure to microplastics and pose health risks for neighboring communities.
"Chemical recycling just takes plastics heated at a really high temperature to make small amounts of fossil fuels, or uses vast amount of toxic chemicals to try to break down old plastic and make it new plastic," Enck explained. "(It is) the last thing we need."
Plastic production is forecast to increase by 70% over the next 20 years, with roughly half designed for single-use products, according to the report.
Enck argued without significant reduction in plastic packaging, consumers will continue to ingest chemicals like PFAS, lead, mercury, vinyl chloride and other chemicals found in food and beverage packing.
"We're particularly concerned by a chemical called polylactic acid, PLA," Enck noted. "That is typically made from corn or sugar crops, and they also contain toxic chemicals."
Microplastics and nanoplastics are produced when plastic products break down into tiny fragments, which end up in soil and waterways.
Enck pointed out plastic particles have been found in honey, beer, salt, tea bags, fruit, vegetables, seafood and meat. Microplastics have been found in human blood, organs, brains, breast milk and in newborn babies. Research has linked microplastics exposure to heart attacks, stroke, and diseases related to hormone disruption.
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Two new studies find that without sustained intervention, California may permanently lose big sections of old-growth giant sequoia groves.
The majestic trees only grow on the western slope of the Sierra Nevada. Since 2015, 20% of them have died, mostly in three megafires in 2020 and 2021.
David Soderberg, Ph.D, a biologist with the U.S. Geological Survey and a study co-author, said the blazes incinerated many of the older, seed-bearing trees.
"You're getting much larger patches of fires burning at what's called high severity. So, you have this kind of bad combination for the sequoias where many more of the mature trees are dying, and there are many fewer of the seedlings regenerating," he explained.
The studies show there are substantially fewer seedlings than in the past, and those that germinate are imperiled by drought and heat stress linked to climate change. The Giant Sequoia Lands Coalition partners have planted more than 500,000 native seedlings in severely burned areas where reproduction has been insufficient.
Paul Ringgold, chief program officer with the Save the Redwoods League, said the idea is to give forest regeneration a head start.
"When you're planting seedlings, you're planting trees that have been grown in the nursery for two years or more. They're more robust than a seedling that is sprouting from a seed, giving it a little bit of an edge against the impact of drier, hotter summers," he said.
Old-growth sequoia are the world's largest trees and depend on fire to reproduce. But Ringgold noted that past fire-suppression efforts have led to a buildup of excessive fuel loads in the forests. So, extensive projects are underway to clear out dead vegetation and make the groves more resilient to fire.
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Nearly 10,000 Montanans have petitioned the U.S. Forest Service to prevent mining activity in the iconic Smith River watershed.
The Smith is known for its majestic views and numerous wildlife species but it is also a huge draw for outdoor enthusiasts seeking to "disconnect." The Smith River Public Lands Coalition has called on the Forest Service to withdraw mineral leases granted to a company planning a $4 billion copper mine on private land near Sheep Creek, which feeds the Smith more than half of its water.
Josh Seckinger, a Bozeman-based Smith River guide, estimated he has floated the 5-day, 59-mile-long Smith 100 times. He thinks the copper sulfide mine drainage would be devastating.
"It just decimates anything with gills downstream," Seckinger pointed out. "That's fish, that's amphibians, that's aquatic bug life. It's a terrible way to sterilize a river."
Mine developer Black Butte Copper said it is committed to preserving Montana's water while creating economic development opportunities in the state, and claims it can build the mine in an environmentally friendly way.
Seckinger noted beyond the environmental and wildlife damage the mine drainage could cause, it also threatens the local landscape and the recreational economy built around the Smith River. He argued it is not just a hit to the businesses but to Montanans who want to experience the trip. It requires winning a permit in a state lottery.
"It is my hope that every resident of this state puts in for a lottery permit and wins, so they get the chance to experience this place," Seckinger emphasized. "Because once you experience this place, you understand immediately why it needs to be protected."
Black Butte Copper has bought nearly 700 claims on the public lands surrounding the one near Sheep Creek, potentially allowing the company to further expand its mining operations.
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