Jelte van Andel

Learn More
Recent theoretical studies have shown that spatial redistribution of surface water may explain the occurrence of patterns of alternating vegetated and degraded patches in semiarid grasslands. These results implied, however, that spatial redistribution processes cannot explain the collapse of production on coarser scales observed in these systems. We present(More)
Mapping cryptic invaders and invasibility of tropical forest ecosystems: Chromolaena odorata in Nepal. Figure 2-2. The world distribution of Chromolaena odorata: area under infestation (Black) and native range (Grey). Map based on global invasive species database (ISSG 2004). Figure 2-4. Application of remote sensing in detecting individual invasive species(More)
From a study of differently aged populations of the perennial plant species Chamaenerion angustifolium a concept was deduced concerning the population dynamics of the species. The age structure was determined by counting the rings of periderm in the roots. After the establishment of seedlings vegetative propagation is the main factor in population(More)
Seeds from two morphologically different groups in an Erophila verna dune population were used in a growth experiment to analyse and quantify flexibility and plasticity of growth and reproductive characteristics.A strong correlation between plant morphology and individual seed weight was shown in parents and progeny. Seeds of plants with narrow leaves were(More)
  • 1