ForWarn has detected a potential double disturbance in portions of Stanislaus National Forest and Yosemite National Park, California in 2015 and 2016. This disturbance may be due to the rim-fire followed by burn land management efforts.
ForWarn potentially indicates that an area in the Fremont National Forest, Oregon experienced a decline in green vegetation due to the Mountain Pine Beetle from 2004 through 2010 and still may not have recovered in terms of vegetation canopy greenness. The anomaly may also be associated with climate change initiating a shift in vegetation type in the area.
ForWarn identified a decline in vegetation greenness in the Black Hills National Forest. The August 2016 disturbance is attributed to tree cultivation in the area.
ForWarn identified an anomaly in the Lassen National Forest, California. The patches of disturbance have sharp boundaries. Drought sensitivity of the cleared area is not likely a factor because adjacent non-forest area is not showing comparable decline in vegetation greenness. Because of these factors, its is probable that the disturbance is human sourced land treatment.
ForWarn determined an anomaly north of Lake Tahoe in Tahoe National Forest, California. Hard boundaries of disturbance suggests silviculture treatment in the mixed conifer forest. However, the association of grasses within the forest could show strong drought associated departure of vegetation greenness.
ForWarn identified a forest disturbance in Okanogan County, Washington. The forest had been previously harvested with regeneration. The anomaly shown in November, 2014, has the date, shape, and persistence of a stand/fuels silviculture treatment.
ForWarn observed an anomaly in the Black Hills National Forest located within South Dakota and Wyoming. The decline in vegetation greenness seems to be mostly associated with silviculture treatment but there is also possible insect defoliation within the area of concern.
ForWarn detected a decline in Forbes State Forest, Pennsylvania. Silviculture treatments in the area account for the loss of vegetation greenness.
ForWarn identified a disturbance anomaly in west-central Alabama. The cause for the decline in vegetation greenness is silviculture treatment in the area.
ForWarn identified departure in Aroostook County, Maine. There is suspected harvest activities in the area. Silviculture treatment is the main cause for the decline.