This dataset gathers the floristic composition in a network of about 100 transects across terra firme forests in Gabon, considering stems above or equal to 5 cm diameter at breast height. In each transect, the following data are collected : 1. Diameter at breast height (dbh), 2. Species identification. Herbarium samples are conserved at the Herbarium of the Université Libre de Bruxelles (BRLU, Belgium) and the database is frequently updated by ULB's botanists. 3. GPS geolocation. These data are collected and used by Evolutionnary Biology and Ecology unit from the Université Libre de Bruxelles (ULB) and Missouri Botanical Garden (MBG), Central Africa Program.

The site Montagne Maripa is composed of one 3km-transects (20m wide). 960 trees with dbh>=20cm have been recorded by Office national des forêts (ONF). No fauna inventories. No under-storey plants inventory. No soils have been sampled on this site. No laboratory analysis available for soils.

The site Yaroupi is composed of four 3km-transects (20m wide). 3965 trees with dbh>=20cm have been recorded by Office national des forêts (ONF). Fauna inventories have been made by Office national de la chasse et de la faune sauvage (ONCFS) few days after. No under-storey plots on this site. Soils have been described using 22 samples (1.20m depth max.). Laboratory analysis are available for one soil-profile.

The site Manaré is composed of three 3km-transects (20m wide). 3401 trees with dbh>=20cm have been recorded by Office national des forêts (ONF). Fauna inventories have been made by Office national de la chasse et de la faune sauvage (ONCFS) few days after. No under-storey plots on this site. Soils have been described using 2 samples (1.20m depth max.). No laboratory analysis available for soils.

The site Crique Grillon is composed of two 3km-transects (20m wide). 1959 trees with dbh>=20cm have been recorded by Office national des forêts (ONF). No fauna inventories. No under-storey plants inventory. Soils have been described using 8 samples (1.20m depth max.). No laboratory analysis available for soils.

The site Centre Spatial Guyanais (CSG) is composed of four 3km-transects (20m wide). 5007 trees with dbh>=20cm have been recorded by Office national des forêts (ONF). Fauna inventories have been made by Office national de la chasse et de la faune sauvage (ONCFS) few days after. No under-storey plants inventory available. Soils have been described using 21 samples (1.20m depth max.). No laboratory analysis available for soils.

The site Limonade is composed of three 3km-transects (20m wide). 3354 trees with dbh>=20cm have been recorded by Office national des forêts (ONF). Fauna inventories have been made by Office national de la chasse et de la faune sauvage (ONCFS) few days after. No under-storey plots on this site. Soils have been described using 16 samples (1.20m depth max.). No laboratory analysis available for soils.

The site Toponowini is composed of four 3km-transects (20m wide). 4603 trees with dbh>=20cm have been recorded by Office national des forêts (ONF). Fauna inventories have been made by Office national de la chasse et de la faune sauvage (ONCFS) few days after. 506 under-storey plants have been recorded on 20 25m²-plots by Institut de recherche pour le développement (IRD). Soils have been described using 23 samples (1.20m depth max.). Laboratory analysis are available for two soil-profile.

Guyafor is a network of permanent forest plots installed in French Guiana. The site of Régina St Georges covers a 14ha area. It is composed of one plot managed by ONF. 8587 trees are being followed since 2003. 5 campaignes of inventories have been made in 2003, 2005, 2007, 2008, 2009.

The site Haute Beiman is composed of four 3km-transects (20m wide). 5207 trees with dbh>=20cm have been recorded by Office national des forêts (ONF). Fauna inventories have been made by Office national de la chasse et de la faune sauvage (ONCFS) few days after. 833 under-storey plants have been recorded on 44 25m²-plots. Soils have been described using 18 samples (1.20m depth max.). One laboratory analysis available for soils.