Journal
GLOBAL ECOLOGY AND BIOGEOGRAPHY
Volume 31, Issue 1, Pages 25-36Publisher
WILEY
DOI: 10.1111/geb.13406
Keywords
disturbance; Landsat; recovery; remote sensing; resilience; tree mortality
Categories
Funding
- H2020 European Research Council [101001905]
- European Research Council (ERC) [101001905] Funding Source: European Research Council (ERC)
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This study analyzed the resilience of Europe's forests using satellite-based indicators and found that, on average, forests in Europe recover to pre-disturbance levels within 30 years. The resilience of Europe's forests to disturbances is high, with recovery being over 10 times faster than disturbance on most of the forest area. However, 14% of Europe's forests have low or critical resilience, with disturbances occurring as fast or faster than forest canopy can recover.
Aim Forest ecosystems around the globe are facing increasing natural and human disturbances. Increasing disturbances can challenge forest resilience, that is, the capacity of forests to sustain their functions and services in the face of disturbance. Quantifying resilience across large spatial extents remains challenging, as it requires the assessment of the ability of forests to recover from disturbance. Here we analysed the resilience of Europe's forests by means of satellite-based recovery and disturbance indicators. Location Continental Europe (35 countries). Time period 1986-2018. Major taxa studied Gymnosperm and angiosperm woody plant species. Methods We used a comprehensive set of manually interpreted reference plots and random forest regression to model annual canopy cover from remote sensing data across more than 30 million disturbance patches in Europe over the time period 1986-2018. From annual time series of canopy cover, we estimated the time it takes disturbed areas to recover to pre-disturbance canopy cover levels using space-for-time substitution. We quantified forest resilience as the ratio between canopy disturbance and recovery intervals, with critical resilience defined as forest areas where canopy disturbances occurred faster than canopy recovery. Results On average across Europe, forests recover to pre-disturbance canopy cover within 30 years. The resilience of Europe's forests to disturbance is high, with recovery being > 10 times faster than disturbance on 69% of the forest area. However, 14% of Europe's forests had low or critical resilience, with disturbances occurring as fast or faster than forest canopy can recover. Main conclusions We conclude that Europe's forests are widely resilient to past disturbance regimes, yet changing climate and disturbance regimes could erode resilience.
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