Restoring Dutch Wetlands Offers a Dual Victory for Climate and Nature
Wageningen, Friday, 31 July 2026.
A July 2026 Wageningen University study reveals that restoring peatlands and salt marshes simultaneously maximizes carbon storage and biodiversity, proving that climate and conservation goals can align perfectly.
Maximizing Ecological and Climate Synergy
A comprehensive study by Wageningen University & Research (WUR) has evaluated ten distinct land management measures across agriculture and nature to identify the most effective pathways for environmental recovery [1]. The researchers concluded that restoring degraded peatlands and salt marshes, alongside preventing deforestation, represent the most powerful strategies to simultaneously advance carbon sequestration and biodiversity rehabilitation [1]. Rather than treating climate mitigation and nature conservation as competing interests, this research highlights how targeted ecosystem restoration can achieve both objectives in tandem [1].
The Science of Natural Carbon Sinks
Lian Grabijn, a researcher at WUR, emphasized that the restoration of peatlands and salt marshes proves climate and nature goals can go hand in hand, noting that these specific ecosystems offer unique opportunities to lock in carbon while bolstering biodiversity [1]. From a technical perspective, peatland restoration works by elevating groundwater levels, which slows down the decomposition of peat and significantly mitigates carbon dioxide emissions [1]. Meanwhile, salt marshes and tidal mudflats contribute to climate goals by trapping carbon through natural sedimentation processes [1].
Practical Application in the Oosterpolder
This scientific framework is already being translated into physical action in the Netherlands. Restoration work recently commenced in the Oosterpolder, a low-peat area located in Haren [1]. The project involves a series of highly coordinated ecological interventions: raising the local groundwater level, removing the nutrient-rich topsoil layer, and spreading hay harvested from established peatlands to stimulate the growth of characteristic wetland vegetation [1]. This hands-on restoration directly benefits local fauna and flora, creating critical habitats for marsh birds, amphibians, and specialized marsh plants [1].
Balancing Trade-offs and Hydrological Pressures
While the dual benefits of wetland restoration are clear, the WUR study cautions that climate and biodiversity targets do not always align perfectly [1]. For instance, intensively managed permanent grassland can actually sequester more carbon than extensively managed, herb-rich grassland, even though the herb-rich variety is vastly superior for supporting diverse insect and animal life [1]. Because of these discrepancies, researchers advocate for an integrated, area-specific approach that balances carbon sequestration with ecological complexity, supported by long-term investments and local stakeholder consensus [1]. Additionally, landscape elements like hedges, woodlots, and agroforestry can be integrated to provide food, shelter, and migration corridors for birds and small mammals [1].
Addressing Salinization in a Changing Climate
The management of Dutch water systems is further complicated by rising sea levels and more frequent, prolonged droughts during the spring and summer [2]. These climate-driven pressures are accelerating the salinization of groundwater and surface water, particularly in the western and northern regions of the Netherlands [2]. To address these shifting conditions, a national research program titled ‘Omgaan met Zout’ (Coping with Salt) was launched in 2026 by a consortium including Deltares, KWR, WUR, Van Geest Ecology, and STOWA [2]. This initiative utilizes laboratory, greenhouse, and mesocosm experiments to evaluate the salt tolerance of various agricultural crops and wild species, ensuring that future conservation and land-use strategies remain viable in an increasingly saline environment [2].