- Author: Ann King Filmer
Releasing aquarium fish into local waterways — or down the toilet — can damage aquatic ecosystems in a number of ways. The fish themselves can become an invasive species, they can disrupt habitats for other fish and aquatic species, and they may introduce secondary problems such as harmful pathogens or other aquarium species (seaweed, snails) into the waterways.
At least 13 of the 102 aquarium species that are imported into California have been introduced into California marine waters, according to a recent report by Susan Williams, professor in the...
- Author: Suanne Klahorst
Dan Morain’s opinion piece on California Technical Bulletin 117 in the Sacramento Bee last Sunday has most of the facts we need to learn about our toxic couches. Drafted in the 1970s to mandate the fire protection for household furnishings, the bulletin was intended to save lives. That was in a naïve era, before methods could measure fire...
- Author: Jeannette E. Warnert
Anaheim boasted a thriving wine industry in the late 1800s, before an unnamed affliction killed 40,000 acres of the grapevines and put 50 wineries out of business. The problem was later found to have been Pierce’s disease of grapevines. Would Anaheim be wine country today if it weren’t for Pierce’s disease? Probably not, but the sad fate of this Southern California wine industry underscores the importance of controlling the disease and the insects that spread it in California’s thriving grape growing regions.
The bacterium that causes Pierce’s disease has always existed in California, affecting a wide variety of plants, from oleanders to almonds. But the problem shot to prominence in the 1990s with...
- Author: Rebecca Miller-Cripps
Styrofoam — referring generically to #6 expanded polystyrene foam — is a disposal headache. Extremely bulky, yet lightweight, it takes up space in the waste stream (and in landfills), but its removal doesn’t add much value to what is known as “diversion numbers.”
In 1989, California Assembly Bill 939, known as the Integrated Waste Management Act, mandated reduction (or diversion) in waste disposal: jurisdictions were required to meet a 50 percent diversion goal by the year 2000. In 2011, Governor Jerry Brown signed AB 341, requiring a 75 percent reduction in disposable waste by 2020.
These goals are based on weight. So, for example, “green wastes” (lawn and...
- Author: Anne Lombardo
There is a new predator in the forest these days. It has arisen quietly over the years. Any wildlife feeling hungry when they come upon it in the Sierra is vulnerable. This predator is amazingly small for the scope of its damage; it can’t run fast or climb high.
This new predator is rodenticide in pellet form, used in violation of all safe-use regulations in our national forests by large-scale marijuana growers. Rodenticides are being used to protect young and tasty marijuana seedlings from wildlife roaming through the forest looking for a meal. Chemicals never meant to be used more than 50 feet from homes are now scattered across forest hillsides. Piles of poisons are left around hundreds of plants even though only a few...