Mist-netting during the breeding season on given sites in reed and forest every year from Mai - September / once in ten days.

The data are for: Braila Islands SI000726: BI1 - Chiriloaia colony (2007-2011); BI2 - Cucova colony (2007-2011); BI3 - Vulpasu colony (2007-2011). Variable list: BP (<em>breeding pairs</em>) / AON (<em>apparently occupied nests</em>) of colonial piscivorous birds species (2007-2011)

Counting of resident and wintering Greyleg Geese (Anser anser) and tagging them with neck collars and GPS locators. Furthermore counting of hatched juveniles in early summer. Everything synchronized with the colleagues of the Hungarian side of the Nationalpark.

Undaria pinnatifida was observed for the first time in the Mar Piccolo in April 1998, settled on the docks near the small fishing boat harbour. A systematic campaign of measurements was carried out from December 2000 to November 2002 and from December 2006 to November 2007 to follow the development of this non-indigenous species population

In Doñana both wild and domestic ungulates are present. Livestock (cows, horses, sheep) is controlled by the Park Management authority (Regional Ministry of Environment) through direct counts conducted each month and by sanitary control of cattle (tuberculosis) that is mandatory. EBD-CSIC collects data on wild ungulates (wild boar, red deer and fallow deer) through seasonal (winter, spring and late summer) line transect counts (distance sampling), done by car at the end of the day and beginning of the night. Twelve transects (15 km each) cover different areas of Doñana. Four transects located in the marshes can only be counted in the dry season (late summer). Apart from ungulates, also rabbits and hares are recorded. Park Management conducts additional counts of red deer and fallow deer (population counts) once a year during the mating season (late summer) dividing the National Park into 20 regions. Summaries are all published in annual reports of the Park.

Data on bird presence and abundance in Doñana is available since the 50ties, even before its protection. EBD-CSIC started standardized monitoring by aerial counts in the 70ties, initially focused on wintering birds but since de early 80ties counts are conducted monthly, and up to 50 bird species are identified in 52 counting areas within the marshes. Terrestrial bird count of main bird concentrations of Doñana have been conducted at the same time (both EBD-CSIC and Park Management) but were not standardized until 2002 by EBD-CSIC. Since then, monthly surveys have been conducted covering about 87 water bodies of the marshes and from fixed observation points (up to 196 water bird species are included). Additionally, each month, a transect (30 km) count of birds (all non-passerine species and Corvus corax) present at the beach and sea shore is done by car. Furthermore, during spring, colonial water bird nests are located and chicks ringed when possible. Several colonies have been monitored since the 80ties. Non-colonial waterbird nests are located monthly during the breeding season using linear transects on horse in the marshes, totalling about 65 km. These transects data are being collected since 2003. Earlier data on non-colonial breeding waterbirds are more disperse, although ringing activities have been done since the 70ties on regular bases.

Yearly counts of typical and edangered/protected bird species in the Nationalpark (reed birds, shore birds/waders, herons, cormorants, farmland birds, terns, gulls, geese).