Autumn Colors in Bieszczady National Park
As temperatures drop and daylight hours shorten, the Carpathian Mountains in southern Poland witness a seasonal transformation. Brown bears are seen foraging in search of food to prepare for their winter hibernation, while the landscape becomes adorned with the vibrant hues of autumn. This striking change was documented in an image captured by the Operational Land Imager (OLI) on the Landsat 9 satellite on October 8, 2026, showcasing the stunning scenery of Bieszczady National Park in southeast Poland.
Dominance of Deciduous Trees
The forests in this region are primarily composed of European beech trees (Fagus sylvatica), which, along with sycamore maple (Acer pseudoplatanus), contribute to the rich palette of reds and golds characteristic of fall. As the season progresses, the cooler air and diminishing light levels trigger the trees to reduce chlorophyll production, the key component in photosynthesis. This reduction leads to a fading of the green colors in the leaves, allowing the underlying yellow and red pigments to become visible.
A Historical Perspective on Beech Forests
The European beech is a resilient species that has thrived across various climates since the last ice age. Following the retreat of glaciers, these trees expanded northward from their isolated habitats in mountain ranges such as the Carpathians and the Alps, playing an essential role in reforesting areas previously covered by ice. Portions of Bieszczady National Park are recognized as part of UNESCO’s network of ancient and primeval beech forests that span 18 countries in Europe.
Subalpine Meadows and Ecosystems
While beech forests cover significant areas, they are limited in elevation, reaching heights of about 1,000 to 1,260 meters (3,300 to 4,100 feet). Above this range lies the polonina, a type of subalpine meadow characterized by open grasslands and thickets of rowan, willows, and green alder. These meadows, found on ridge tops to the east-southeast of Smerek, present a tan appearance as they lose their summer lushness.
Wildlife in the Bieszczady Mountains
The Bieszczady Mountains are not only known for their beautiful forests and meadows but also for their diverse wildlife. European bison, which were once extinct in the wild, have made a comeback after being reintroduced in the 1960s and are now commonly seen in the area. The forests also provide a habitat for brown bears and Eurasian lynx, which find adequate food and shelter in this rich ecosystem.
This imagery and information were brought to light by the NASA Earth Observatory, with contributions from Michala Garrison using Landsat data from the U.S. Geological Survey and a report by Lindsey Doermann.
Source: NASA
