Two ACE crews are currently working on a project to protect Douglas-fir trees from Bark Beetle infestations in the Apache- Sitgreaves National Forest. The crew’s mission is to install pheromone bubble capsules to large Douglas-fir trees in campgrounds and recreation areas in the Alpine and Springerville Ranger Districts – areas affected by The Wallow Fire, a wildfire in eastern Arizona and western New Mexico that occurred in 2011.
Preparing the MCH pheromone bubble capsules for installation
The MCH pheromone is a naturally occurring anti-aggregation pheromone of the Douglas-fir & Spruce beetles. MCH works by replicating the beetle pheromone that tells other beetles the tree is full and that the food supply is insufficient for additional beetles. Arriving beetles receive the ‘message’ that they should look elsewhere for a suitable host, thus preventing beetle infestations. The approach is environmentally safe and non-toxic to humans, pets, birds and even the beetles themselves.
In past years the crews have used the grid treatment, creating a pheromone buffer around valued sites. This year the crew has switched methods to individual tree treatment.
MCH capsule installation
Prior to starting the project, Corps Members completed a full week of training with Forest Service staff covering tree identification, compass and GPS use, pacing, tree Diameter at Breast Height (DBH), and proper capsule installation. Due to the complexity of the project crew members have learned how to fill out paperwork which captures the data for this project.
Feedback from the project has been extremely positive. Corps Members said that they have really enjoyed the project and all the technical skills that they have learned. They enjoy working with our project partner Monica Boehning, and appreciate her passion for the project. The crew has also enjoyed the amazing camping at Big Lake Campground and East Fork.