On this weeks episode of Terra Informa the sounds of bark beetles in New Mexico are transformed into music for the ears. Also, the forces behind stopping shark finners as well as the protective measures put in place to gives the sharks a safe future are explored. Finally, the Red Squirrel of the Yukon is revealed to have more skills than meet the eye.
The Acoustics of Bark Beetles
David Dunn, sound artist and composer produced an album in 2006 called The Sound of Light in Trees: The Acoustic Ecology of Pinyon Pines, in collaboration with the Acoustic Ecology Institute. With tiny microphones, he records the sounds of bark beetles in New Mexico’s pinyon pines. Beyond a fascinating listening experience, this is an innovative approach to the ecology of insects, and to monitoring bark beetle populations.
More on this story: The Sound of Light in Trees: The Acoustic Ecology of Pinyon Pines
Catching shark finners on the high seas
Have you ever wondered how shark finners get caught? The US strengthened its laws against shark finning in 2011, banning the practice for almost every shark species in American waters. Paul Raymond is a special agent with NOAA, the National Oceanic and Atmospheric Association. He’s helped enforce the US laws protecting sharks. Chris Chang-Yen Phillips reached him in Florida to ask how they do it.
The Little Squirrel That Could
The Red Squirrel of the Yukon Territory weighs less than half a pound. They can be seen spending their days collecting pine cones, and scampering up trees. They are an animal that wouldn’t be out of place in your favorite children’s cartoon. Not a very formidable presence when you consider their imposing surroundings in the great wilderness that is the Yukon. But as we’ll soon find out, the red squirrel has a little trick up its sleeve.
Matt Hirji spoke with University of Alberta biologist Stan Boutin to find out more.
Garlic Mustard is a native species to Europe and Asia that were originally introduced to North America as a medicinal and culinary herb. The species is very invasive to our environment and can be destructive to native biodiversity and habitat. It causes long term negative effects in soil and reduces available plants for wildlife such as deer, birds and insects. It’s been listed as a prohibited noxious weed in the Alberta Weed Control Act. Mill Creek ravine is one of few known locations in Edmonton where this non-native species occurs.
To prevent further distribution and reduce the negative impact on other areas in Mill Creek, the Edmonton Naturalization Group and the City of Edmonton organize Garlic Mustard pulls in Mill Creek. They are looking for volunteers to come and help remove this weed on Saturday, May 25, 2013, 9:30–11:30am
For more information visit our website at terrainforma.ca
or visit Edmonton Pest Control
Does Solar electricity, solar hot water, geothermal heating, water collection, retrofit or new construction interest you? After many years of arranging tours of homes in Edmonton, the Eco-Solar Tour is branching out to commercial buildings. This year, they will be conducting the second Eco-Solar Tour of Energy Efficient Buildings. The Tour will feature businesses that are doing their part to reduce their energy use and to improve the working environment for their employees. The Eco-Solar Tour of Energy Efficient Buildings will feature one energy efficient building, per day, for nearly two weeks, starting on May 28th and finishing on June 6th.
Each weekday, from Monday to Friday, one building will be open for touring from noon until 4 pm.
Check out more details of the tours at http://www.ecosolar.ca/