The monitoring program provides data on the distribution, extent and conservation status of the main habitat units present in Doñana. These include:
1. Forest and shrub cover: Changes in the cover of the main types of forest and shrub vegetation present in the Doñana National Park are monitored at 5-year intervals. This information is derived from a supervised classification of Landsat images, validated with ground-truthing data taken at permanent plots. See summary data below. Request raw data.
In situ information collected at permanent plots includes:
1.1. & 1.2. Juniper and pine-juniper forests: Data from nine, 10x10 m, juniper-forest plots include the height, canopy width and length, leaf damage and flowering intensity of adults, as well as the number of seedlings and saplings per plot. These variables were also measured in eleven, 10x10 m, pine-juniper forest plots monitored from 2006 to 2012. See summary data below. Request raw data.
1.3. Shrubland: Data from 21, 15x15 m plots monitored since 2006 include estimates of cover and number of individuals per species, proportion of bare soil, species richness and species diversity per plot. See summary data below. Request raw data.
1.4. Gallery forest: The gallery forest of La Rocina Stream is monitored in 10 circular plots (15-m diameter), where the cover and density of each shrub and tree species is registered. See summary data below. Request raw data.
2. Cork oak forests and heronry: Data from the oak-tree monitoring program include yearly estimates of tree occupation (by large nesting birds), survival, health (using a defoliation index) and reproductive yield (acorn production and subsequent predation) of 126 adult trees present in or nearby the Doñana heronry; as well as biannual measurements of tree dendrometry. See summary data below. Request raw data
3. Marshland: The vegetation of the Doñana marsh is monitored at 5-years intervals. The monitoring protocol combines the available cartographic information with thematic maps derived from a supervised classification of Landsat images. See summary data below. Request raw data.