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EU Biodiversity Strategy

Submitted by Ananda Rohn on
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Policy Background

The EU Biodiversity Strategy sets ambitious targets to halt biodiversity loss and restore degraded ecosystems. It promotes:

  • Ecosystem restoration

  • Increased landscape connectivity

  • Nature-based solutions

  • Resilient agricultural systems

  • Protection of wetlands and riparian zones

Agricultural landscapes cover a large proportion of European territory and are central to achieving biodiversity goals. However, drainage, channelisation, soil compaction, and hydrological simplification have often reduced habitat heterogeneity.

 

Hydrology and Biodiversity Are Closely Linked

Water dynamics strongly influence:

  • Habitat availability

  • Wetland persistence

  • Soil moisture conditions

  • Riparian vegetation structure

  • Aquatic ecosystem functioning

When landscapes lose their natural water retention capacity, biodiversity often declines.

NSWRM help reintroduce hydrological variability, which supports ecological processes.

They can:

  • Restore small wetlands

  • Reconnect floodplains

  • Enhance riparian buffer zones

  • Increase habitat heterogeneity

  • Improve microclimatic conditions

By modifying how water moves and is stored in the landscape, these measures support multifunctional land use.

 

The OPTAIN Perspective

OPTAIN examines the performance of selected retention measures across different biogeographical regions in Europe. Through integrated modelling and stakeholder engagement, the project explores:

  • How water retention measures affect hydrological regimes

  • How changes in water dynamics may influence ecosystem functioning

  • How multifunctionality (water, nutrients, biodiversity) can be evaluated

  • How trade-offs between agricultural productivity and ecosystem benefits can be managed

The project recognises that biodiversity outcomes depend on local conditions, landscape structure, and governance settings.

Rather than assuming universal benefits, OPTAIN investigates context-specific effectiveness, helping to clarify where and how retention measures can support broader ecosystem objectives.

 
Key Learning Takeaway

The EU Biodiversity Strategy promotes ecosystem restoration and resilience.
NSWRM contribute by restoring more natural water dynamics and increasing landscape heterogeneity.
Understanding this hydrology–biodiversity link is central to multifunctional landscape management.