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The LEO Network is a worldwide network of observers and experts that share their observations of environmental change.
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Observations

Agriculture Officials Really Want Those Spotted Lanternflies Gone, Gone, Gone
Pennsylvania officials are giving the following advice to those who encounter the pesky invasive insects: "Kill it! Squash it, smash it ... just get rid of it."
Pennsylvania, United States
NPR.org

Caterpillars on Kesugi Ridge
Hikers on Kesugi Ridge observe a large abundance of Rusty Tussock Caterpillars all over cairns marking the trail from Coal Creek to Byre's Lake. They swarmed on the hiker's bodies and packs and from a distance covered structures to the point where they looked black.
Chase, Alaska, United States
Jessie Moan, Carl Roland, Kendra Wissel, Adrienne Fleek, Sarah Stehn

Double-crested Cormorant (Phalacrocorax auritus) Extended Range into the St. Lawrence Region
Double-crested cormorants have been observed in the St Lawrence River region, with record-breaking numbers, in recent years.
Gananoque, Ontario, Canada

Vancouver trees dry out as heat wave continues to take its toll
British Columbia's unprecedented heat wave and drought-like conditions may be what is causing some Vancouver trees to shed their leaves this week, a scientist says.
Vancouver, British Columbia, Canada
CBC

Lymantria dispar dispar outbreak
Lymantria dispar dispar also known as spongy moth was observed in Waterloo Ontario to be in unusually large quantities during the summer of 2021.
Waterloo, Ontario, Canada

Urban tree damage in Montreal
Trees in urban residential areas seem to be more prone to damage because of an increase in windstorms and because of maintenance work, which has weakened trees.
Saint-Léonard, Quebec, Canada

Irregular Ponderosa Pine Growth
Ponderosa pines in Eastern Washington are displaying signs of irregular growth.
Spokane, Washington, United States

Snow conditions causing stress on trees
The snowfall that came in the relatively mild Christmas season, was followed by severe cold and has caused the snow to freeze to bark and needles on conifers. The snow that now comes, settles on the branches in thick layers and is becoming heavier to carry.
Kattåsen, Finnemarka, Modum, Viken
NRK

Late Blooming Willow (genus Salix)
Wasilla, Alaska, United States

Extreme rain brings flurry of landslides
Large amounts of precipitation triggered landslides across Prince of Wales Island, blocking roads and damaging at least one bridge.
Prince of Wales Island, Alaska

Alaska Grown Black Walnuts
The unthinkable (ripe Alaska walnuts) a few decades ago is potentially our new reality as our climate continues to shift (warmer summers and longer falls). As our climatic parameters shift, so does our opportunity to diversify our edible plantings!
Peter's Creek
Facebook - Alaska Home Gardeners Group

Second year of Hemlock Looper Moth (Lambdina fiscellaria) outbreak returns to North Vancouver in larger numbers
The Hemlock Looper Moth outbreak is said to last between 3-4 years and now coincides with an outbreak of Phantom Hemlock Looper which saw its last outbreak more than a decade ago.
North Vancouver, British Columbia, Canada

Why are spruce trees turning orange in the Alaska Range?
The answer to the Tang-colored mystery involves tiny spruce needle rust fungus spores that also rely on Labrador tea plants to survive.
Healy, Alaska, United States
Anchorage Daily News

Large forest fire localized in Bilibin district
On Tuesday, August 4, paratroopers of Chukchi and Federal Aviation Protection stopped the spread of a large fire in the Bilibin district.
Chukotka Autonomous Okrug, Russia
Анадырь - Онлайн

Western Red Cedar die-off in Pacific Spirit Park
In the last few years, I have observed a significant die-off of Western red cedar in several high traffic and peripheral areas of Pacific Spirit Regional Park (PSRP). The majority of the cedar trees I saw were noticeably consumed by browning, small, and young, with most likely more shallow root systems. This is consistent with vegetative stress to which young trees have not developed resilience, but older trees may be less impacted
Vancouver, British Columbia, Canada
David Oswald, Cody Thomas, Lauren Wright

Spruce Trees Producing Huge Amounts of Cones
Unusually large cone crops may be the result of favorable variations in weather across several years.
Koyuk, Alaska, United States

All forest fires extinguished in Chukotka
All forest fires have been extinguished in Chukotka, where thousands of hectares of natural areas have been blazing before, according to the region's Department of Natural Resources and Ecology. RIA Novosti, 20.07.2020
Chukotka Autonomous Okrug, Russia
РИА Новости

Eastern Ontario in grip of worst Gypsy moth outbreak in 30 years
The worst Gypsy moth caterpillar outbreak in Eastern Ontario in 30 years is ripping through city backyard trees and rural forests at an alarming rate.Some pockets of forest north of Belleville, along Highway 7, look like stands of giant toothpicks after being picked clean of their foliage.
Belleville, Ontario, Canada
Belleville Intelligencer

Eastern Ontario in grip of worst Gypsy moth outbreak in 30 years
The worst Gypsy moth caterpillar outbreak in Eastern Ontario in 30 years is ripping through city backyard trees and rural forests at an alarming rate.Some pockets of forest north of Belleville, along Highway 7, look like stands of giant toothpicks after being picked clean of their foliage.
Eastern Canada
Belleville Intelligencer

Increasing catch of spruce bark beetles
"Throughout Viken in the lowlands there is an increasing evidence of spruce bark beetles and that is worrying. What is positive is that in Measure Package No 2 from the Government you receive financial compensation for wind fall logging and forest management" says Lars Kr. Haug, head of forestry at Viken Skog.
Viken county, Norway
Viken Skog

Record-breaking heatwave in Siberia
A prolonged heatwave in Siberia is “undoubtedly alarming”, climate scientists have said. The freak temperatures have been linked to wildfires, a huge oil spill and a plague of tree-eating moths.
Siberia, Russian Federation
the Guardian

New Ground Rising from First Lake
Noatak, Alaska, United States

Patches of Disrupted Trees
I noticed sections of trees that had fallen over and or had their tops broken off. I'm wondering if it was a micro storm or a disease that affected the trees.
Barnard, Vermont, United States

Roundheaded Wood Borer

They just keep coming: Tent caterpillar invasion coats Sask. home in insects — and feces
Hordes of tent caterpillars have covered Tammi Hanowski's home south of Saskatoon and have crawled up the walls and made their way into her pool.
Saskatoon, Saskatchewan, Canada
CBC

Landslide destroys Starrigavan restoration projects
High rainfall this month is being blamed for a major landslide near Sitka. The US Forest Service reports that a 100-acre slide came down in the Starrigavan Valley, about ten miles from town. The slide, and water damage to an ATV trail in the valley and other hiking trails elsewhere in Sitka -- all add up to a tough month for the agency.
Sitka, Alaska, United States
KCAW

Tent Caterpillar Infestation
At one point our entire red brick house was covered in the black caterpillars trying to reach the adjacent forest. The silk web-like nests began to appear on our trees in May and within weeks, the forests foliage was decimated.
Woodford, Ontario

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