In 1994, a “Pan-European Programme for Intensive and Continuous Monitoring of Forest Ecosystems” started to contribute to a better understanding of the impact of air pollution, climate change and natural stress factors on forest ecosystems. The programme today counts approximately 760 permanent observation plots including near 500 plots with data on both… (More)
New concepts for river management in northwestern Europe are being developed which aim at both flood protection and nature conservation. As a result, methods are required that assess the effect of management activities on the biodiversity of floodplain ecosystems. In this paper, we show that dynamic vegetation models (DVMs) in combination with regional… (More)
— Monitoring of natural vegetation succession is essential for optimal management of river floodplains in the Netherlands. As the maximum discharge capacity depends on the hydraulic resistance of vegetation, a key biophysical parameter for floodplain monitoring is vegetation biomass. The objective of this study is to investigate the feasibility of mapping… (More)
We report on the first results of the HyEco'04 campaign carried out in summer 2004 as a joint activity of a bi-national team of Belgian and Dutch researchers. This integrated approach of assessing the complexity of managed natural ecosystems is a demonstrator case for recent focus of airborne imaging spectroscopy activities on ecotones. The floodplain… (More)
(1996). On inferring past environmental change from species composition data by nonlinear reduced-rank models. In: van Houwelingen H.C.
For optimal management of river floodplains in the Netherlands monitoring of natural vegetation succession and hydrodynamic processes is essential. A key biophysical parameter to monitor floodplains is vegetation biomass. Not only because it influences the hydraulic resistance determining the discharge capacity of the floodplains, but also indicating… (More)
We conducted an exploratory study to determine the usefulness of hyperspectral data for the ini-tialisation and validation of ecological models. To this end HyMap images were acquired in a flood-plain area in the Netherlands. Simultaneously we determined the biomass of the vegetation by clipping and weighing, and we related biomass to reflectance using LAI… (More)
Deposition of nitrogen is assumed to cause loss of botanical diversity, probably through increased production and exclusion of less competitive species. However, if production is (co-)limited by phosphorus, acceleration of the phosphorus cycle may be responsible for the diversity loss and, where that is the case, nitrogen emission reduction may turn out to… (More)