Vooronderzoek Wierdense Veld : Eindrapportage mei 2005

In dit eindrapport van het vooronderzoek Wierdense Veld worden eerst de belangrijkste resultaten van de afzonderlijke onderdelen besproken (Hoofdstuk 2 tot en met 6). In hoofdstuk 2 komt de regionaal-hydrologische situatie van het Wierdense Veld aan de orde en in hoofdstuk 3 de interne hydrologie van het Wierdense Veld. Het hydrochemisch onderzoek staat beschreven in hoofdstuk 4 en de vegetatiekarterting in hoofdstuk 5. De watermacrofauna komt aan de orde in hoofdstuk 6. Hoofdstuk 7 bevat de aanbevelingen voor herstelmaatregelen en een voorstel voor de monitoring van de maatregelen staat beschreven in hoofdstuk 8

Duurzaam herstel van hoogveenlandschappen: Kennis, praktijkervaring en kennisleemten bij de inrichting van hoogveenkernen, randzones en bufferzones

Contains fulltext : 202537.pdf (publisher's version ) (Open Access)301 p

Review and revision of empirical critical loads and dose-response relationships

The workshop on the review and revision of empirical critical loads and dose response relationships was held under the Convention on Long-range Transboundary Air Pollution, in Noordwijkerhout, from 23-25 June 2010. The workshop was organized by the Coordination Centre for Effects (CCE) and supported by the Dutch Ministry of Housing Spatial Planning and the Environment, the Swiss Federal Office for the Environment and the German Federal Environment Agency

How bird droppings can affect the vegetation composition of ombrotrophic bogs

Contains fulltext : 32588.pdf (publisher's version ) (Open Access

Development of floating rafts after the rewetting of cut-over bogs: the importance of peat quality

Contains fulltext : 60321.pdf (publisher's version ) (Closed access)The usual method of restoring cut-over bogs is to rewet the peat surface. but this often leads to the remaining peat layers being deeply inundated. For Sphagnum-dominated vegetation to develop at deeply inundated locations. it is important for floating rafts of buoyant residual peat to develop. In this study. the chemical and physical characteristics of buoyant and inundated peat collected from rewetted cut-over bog were compared. In general. buoyant peat was poorly humified: high methane (CH4) production rates (greater than or equal to2 mumol g(-1) DW day(-1)) were important to ensure buoyancy. Although the peat water CH4 concentrations increased with depth. the CH4 production rates were higher in the uppermost peat layers. High CH4 production rates were related positively with P concentrations and negatively with lignin concentrations. The pH to bulk density ratio (greater than or equal to0.05) also appeared to be a good indicator of CH4 production rates, providing an easy and cheap way to measure. the variable for restoration practitioners. Our results indicated that analysing certain simple characteristics of the residual peat can greatly improve the success of the rewetting measures taken in cut-over bogs. If the analysis reveals that the residual peat is unsuitable for floating raft formation, deep inundation is inappropriate unless suitable peat from other locations can be introduced