Afzali et al. (2026) Climate variability and human disturbances as drivers of vegetation health in the riparian zone of the Danube

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Identification

• Journal: Environmental Research Letters
• Year: 2026
• Date: 2026-06-08
• Authors: Hamid Afzali, Tobias Kuemmerle, Matthias Baumann, Marcel Hudcovič, Lukáš Michaleje, Miloš Rusnák
• DOI: 10.1088/1748-9326/ae798a

Research Groups

Not specified in the provided text.

Short Summary

The study evaluates the impact of hydrological reconnection on the health of riparian forests along the Slovak Danube using four decades of satellite data. It concludes that restoration leads to a significant recovery in vegetation health, though the effect only becomes evident six to ten years post-intervention.

Objective

• To measure the causal effect of hydrological reconnection on the physiological health and resilience of degraded riparian forests.

Study Configuration

• Spatial Scale: Riparian forests along the Slovak Danube.
• Temporal Scale: Four decades.

Methodology and Data

• Models used: Marginal structural model (MSM) within a potential outcome framework to estimate the Average Treatment Effect on the Treated (ATT).
• Data sources: Satellite-based Vegetation Health Index (VHI).

Main Results

• Riparian vegetation was generally in good physiological condition, with specific restored reaches showing improvement trends.
• Hydrological reconnection resulted in a significant recovery of approximately 7.7% (+0.051 VHI units) compared to the pre-restoration baseline.
• The recovery effect is delayed, appearing six to ten years after the intervention, with no significant effect observed in the year of restoration.

Contributions

• Demonstrates a remote sensing-based approach to quantify the long-term success of hydrological reconnection in floodplain forests.
• Highlights the existence of a temporal lag in forest recovery, suggesting that long-term human disturbances reduce resilience and require sustained restoration efforts.

Funding

Not specified in the provided text.

Citation

@article{Afzali2026Climate,
  author = {Afzali, Hamid and Kuemmerle, Tobias and Baumann, Matthias and Hudcovič, Marcel and Michaleje, Lukáš and Rusnák, Miloš},
  title = {Climate variability and human disturbances as drivers of vegetation health in the riparian zone of the Danube},
  journal = {Environmental Research Letters},
  year = {2026},
  doi = {10.1088/1748-9326/ae798a},
  url = {https://doi.org/10.1088/1748-9326/ae798a}
}