Alaska Forest Health Observations's Journal

October 22, 2021

Join us for the 2021 Alaska Invasive Species Workshop, November 3-4!

The Alaska Invasive Species Partnership and the University of Alaska Fairbanks Cooperative Extension Service organizes an invasive species workshop held annually in the late fall. The workshop is a forum for discussing invasive species management activities within the state, offers expert presentations about emerging invasive species science and management issues, highlights outreach efforts, and offers training for new and experienced invasive species managers alike.

The 2021 Invasive Species Workshop theme is: Join the persistence: working behind the screen to prevent and manage invasive species

The workshop is entirely virtual this year and will be hosted online November 3 – 4, 2021. There is no cost to register for this event.

View the agenda and register to attend here: https://alaskainvasives.org/?page_id=134

Posted on October 22, 2021 20:20 by awenninger awenninger | 0 comments | Leave a comment

September 30, 2021

Online Egan Lecture by Dr. Elizabeth Graham, Friday October 1st 2021

Interested in learning why the hemlock in Southeast Alaska look so red and thin? Tune in to hear Dr. Elizabeth Graham’s lecture on western blackheaded budworm: a tiny moth that orchestrates change in an old growth forest. Free registration here: https://uas.alaska.edu/eganlecture/

Western blackheaded budworm: a tiny moth that orchestrates change in an old growth forest
Dr. Elizabeth Graham, Entomologist, USDA Forest Service, Forest Health Protection
Date: Friday, October 1, 2021
Time: 7:00 p.m.

Western blackheaded budworms are a natural part of the forests in Southeast Alaska. Typically their populations are low and damage is negligible, but every 30 to 40 years their numbers build up and they become the most significant disturbance agent in the forest. An outbreak is currently underway with damage visible in most communities throughout Southeast Alaska. A look back at previous outbreaks and the impacts will be reviewed as well as the status of the current outbreak.

Posted on September 30, 2021 21:58 by awenninger awenninger | 0 comments | Leave a comment

September 24, 2021

National Mushroom Month - September 2021

Fungi break down dead material, facilitate nutrient uptake & help trees communicate via vast mycorrhizal networks. Alaska Forest Health tracks fungal plant pathogens & their impacts. Learn more at: https://www.fs.usda.gov/main/r10/forest-grasslandhealth

Posted on September 24, 2021 20:02 by awenninger awenninger | 0 comments | Leave a comment

September 03, 2021

Western Blackheaded Budworm, adult moths spotted along John Muir Trail in Juneau

Western blackheaded budworms chowed on hemlock all summer, now the moths are active and looking to lay their eggs on hemlock needles. Numerous moths were spotted on John Muir trail in Juneau this week but nowhere near as abundant as reported in 1953!

Posted on September 03, 2021 16:59 by awenninger awenninger | 0 comments | Leave a comment

August 27, 2021

Aspen running canker causal agent identified

Learn how #ForestPathology experts at #AlaskaForestHealth @UNL_PlantPath @ArcticBiology figured out that a newly discovered fungus is the cause of the tree disease aspen running canker in Alaska. Read it here: https://bit.ly/3jazIuG

Posted on August 27, 2021 16:29 by awenninger awenninger | 0 comments | Leave a comment

August 19, 2021

Western Blackheaded Budworm Outbreak in Southeast AK

Want to learn more about the western blackheaded budworm outbreak occurring in SE Alaska? Check out our website for info including a map of the damage and reports from a historic outbreak in the 1950s: https://bit.ly/3lZGfug

Posted on August 19, 2021 21:07 by awenninger awenninger | 0 comments | Leave a comment

August 13, 2021

Rusty tussock moth caterpillars - Orgyia antiqua

Voracious rusty tussock moth caterpillars munch berry bushes and dwarf birch—sometimes taking over camp sites! Take caution before handling, their hairs cause a rash. Report observations to http://iNaturalist.org.

More information available here: https://bit.ly/3m5fpkv

Photo credit: Anne Beaulaurier

Posted on August 13, 2021 15:53 by awenninger awenninger | 0 comments | Leave a comment

August 12, 2021

Western Redcedar Health in Southeast Alaska

AlaskaForestHealth is interested in YOUR observations of western redcedar health in SE Alaska, where it grows as far north as Kake. Healthy trees? Freshly killed red tops? Sparse foliage or dying branches? Contribute through iNaturalist!

Link to Western Redcedar Dieback Map Project: https://bit.ly/3s8G94r

Posted on August 12, 2021 16:39 by awenninger awenninger | 0 comments | Leave a comment

August 11, 2021

Birch Leafminers - Leafmining Sawflies

Has fall come early? It might seem as though the birch trees are already turning shades of autumnal brown. Surprisingly, it’s not the changing seasons—the browning leaves are due to birch leafminer feeding! https://bit.ly/2VL2jxV

Posted on August 11, 2021 19:26 by awenninger awenninger | 0 comments | Leave a comment

August 10, 2021

Chokecherry Gall Midge, Contarinia virginianiae

Have you seen this gall on chokecherry? Alaska IPM is tracking the distribution of the chokecherry gall midge and could use your help! This small, orange fly larva lives inside the fruits of chokecherry trees. The berry expands into a fleshy, hollow gall that protects the larvae as they develop. If you see these galls please submit a photo of the galls on the tree as well as the location of the tree to the UAF Cooperative Extension Service pest reporter to help us map the occurrence of this insect in Alaska: https://pestreporter.alaska.edu/

Posted on August 10, 2021 19:49 by awenninger awenninger | 0 comments | Leave a comment