Spatio-temporal patterns of water sources used by vegetation


The main objectives of WG2 are:

  1. Providing experimental evidence on spatial and seasonal patterns in vegetation water sources across the European climates and land-covers.
  2. Identifying the main conditions leading vegetation to switch between different water sources.
  3. Identifying datasets and modelling methods to upscale field observation of vegetation water use to the catchment/landscape.

We aim to answer questions like:

  • How does vegetation affect incoming precipitation and irrigation?
  • What controls the spatio-temporal variations in vegetation water uptake across a variety of climatic and physiographic regions in Europe?
  • Which modelling approaches can be used to upscale plant water uptake patterns from the plant/stand to the catchment/landscape?

We aim to tackle those via the following deliverables:

1.) Review paper(s) on stable isotope-based studies on water sources for vegetation.

2.) Protocols describing standardized sampling procedures, water extraction and isotopic analysis techniques.

3.) Open-access databases of stable isotope-based studies on vegetation water use for integration with modelling applications to derive large-scale estimates of water sources used by vegetation across different plant species and climates in Europe.

4.) Technical report on seasonal and spatial variabilities in water sources used by vegetation, resulting in an ecohydrological conceptual framework.