Database Report

Iberian and Macaronesian Vegetation Information System (SIVIM) – Floodplain Forests -- Floodplain forests of the Iberian Pensinsula

Idoia Biurrun & Xavier Font

GIVD Database ID: EU-00-024	Last update: 2020-12-04
Iberian and Macaronesian Vegetation Information System (SIVIM) – Floodplain Forests	Web address:
Database manager(s): Idoia Biurrun (idoia.biurrun@ehu.es); Xavier Font (xfont@ub.edu)
Owner: Idoia Biurrun
Scope: Phytosociological relevés of floodplain forests, alder carrs, willow scrubs and tamarisk and oleander thickets in the Iberian Peninsula
Abstract:
Availability: according to a specific agreement	Online upload: no	Online search: no
Database format(s): TURBOVEG, MS Access, Excel, other, XML from B-VegAna	Export format(s): TURBOVEG, MS Access, Excel, XML from B-VegAna
Plot type(s): normal plots	Plot-size range (m²): 4 to 800
Non-overlapping plots: 4736	Estimate of existing plots: 6000	Completeness: 79%	Status: ongoing capture
Total no. of plot observations: 4736	Number of sources (biblioreferences, data collectors): 275	Valid taxa: 2407
Countries (%): ES: 84; PT: 15; FR: 1
Formations: Forest: 75% = Terrestrial: 75% // Non Forest: 25% = Terrestrial: 25% (Non arctic-alpin: 25% [Natural: 25%])
Guilds: all vascular plants: 100%
Plot size categories (%): < 1 m2: 0%; 1-10 m2: 0.1%; 10-100 m2: 37.0%; 100-1000 m2: 57.6%; 1000-10000 m2: 0%; >= 10000 m2: 0%; unknowmn: 5.4%;
Environmental data (%): altitude: 97
Performance measure(s): presence/absence only: <1%; cover: >99%
Geographic localisation: GPS coordinates (precision 25 m or less): 10%; point coordinates less precise than GPS, up to 1 km: 76%; small grid (not coarser than 10 km): 14%; political units or only on a coarser scale ( above 10 km): 0.2%
Sampling periods: before 1920: 0%; 1920-1929: 0%; 1930-1939: <0.1%; 1940-1949: 0.4%; 1950-1959: 1.6%; 1960-1969: 2.1%; 1970-1979: 3.7%; 1980-1989: 22.3%; 1990-1999: 34.2%; 2000-2009: 26.0%; 2010-2019: 9.4%; unknown: 0.2%
Information as of 2025-07-11; further details and future updates available from http://www.givd.info/ID/EU-00-024

Idoia Biurrun* (idoia.biurrun@ehu.es)
Plant Biology and Ecology, University of the Basque Country UPV/EHU, P.O.Box 644, E-48080 Bilbao, SPAIN
Xavier Font (xfont@ub.edu)
Plant Biology, University of Barcelona, Avda. Diagonal 643, 08028 Barcelona, SPAIN
* corresponding author