The experimental site of Guyaflux in the Paracou forest (Sinnamary, French Guiana) has been created in 2003 and is set up for at least 20 years. Guyaflux has several aims : 1. to characterise the greenhouse gases exchanges between the forest ecosystem and the atmosphere. 2. to assess the contribution of Guianese tropical humid forest ecosystem to the biospheric carbon sink. 3. to assess the impact of environmental constraints on carbon footprint. 4. to analyze the contribution of different compartments of the ecosystem (soil, subsoil, canopy) to storage and water and carbon flows. 5. to model the primary productivity of this ecosystem by linking carbon flow and tree growth. 6. to assess interactions between water cycle, carbon cycle and major soil minerals (nitrogen and phosphorus) The experimental set-up is composed of a 55m-high flux tower, which measures gases exchanges in real-time.Several data types are registrated : microclimatic data, carbon and water flows between forest ecosystem and atmosphere, CO2, CH4, H2O, water content of the soil, trees growth, evapo-transpiration from the trees...To obtain the flows of water and carbon, the turbulent correlations method is used. The project owner is Institut national de la recherche agronomique (INRA). NORELEC is the master builder of the tower. The Guyaflux project received 55% of its funding by INRA and 45% by Ministry of Research and European Union.

Guyadiv is a network of permanent forest plots installed in French Guiana. The site of Réserve Naturelle Trésor is composed of one 1ha-plot. A complete inventory has been made in 2003 : 443 trees with dbh>=10cm have been registrated and 442 species have been identified. 99,8% of the registrated trees have been identified to the species level. We only have the point coordinates and not the precise demarcation of the sample plot. In order to calculate the bounding box for the plots, we have expanded the point location 100 meters in each direction.

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.

Guyafor is a network of permanent forest plots installed in French Guiana. The site of Risquetout covers a 23,7ha area. It is composed of 4 plots managed by ONF. 7174 trees are being followed since 1995. 9 campaignes of inventories have been made in 1995, 1999, 2001, 2002, 2003, 2004, 2006, 2008, 2009.

Guyafor is a network of permanent forest plots installed in French Guiana. The site of Organabo covers a 25,5ha area. It is composed of 6 plots managed by ONF. 7279 trees are being followed since 1997. 9 campaignes of inventories have been made in 1997, 1999, 2000, 2002, 2003, 2004, 2006, 2007, 2010.

The Paracou Research Station encompasses 5000 ha of tropical rain forest near Sinnamary, French Guiana, and is accessible by paved road. The site includes several types of forest plots, each with unique research objectives. Logging Plots: Fifteen nine-hectare plots (numberred 1 to 15) were established in 1984 to study the impact of different logging treatments on tropical tree population structure. This zone is reserved exclusively for studies investigating the impact of the different logging treatments on forest populations. Primary Forest Plot: A 25 hectare plot (no. 16) was established in 1991 for studies of undisturbed forest. Researchers whose interests are unrelated to the effects of logging treatments are encouraged to conduct their work in this plot. Clearcut Plot: a 6.25 ha plot (no. 17) was established in 1989 at a nearby reserve along the road to St. Elie to study the effects of clearcutting on tropical forest dynamics

Guyafor is a network of permanent forest plots installed in French Guiana. The site of Paracou covers a 130,5ha area. It is composed of 16 plots, managed by CIRAD. 114373 trees are being followed since 1984. 30 campaignes of inventories have been made : every year since 1984.