Ontologia

HydroBASINS lev08 watershed · #6080005780

Bassin de Rivière de Tonnégrande

A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.

Crosses 5 administrative regions : Kourou, Macouria (-Tonate), Matoury, Montsinéry-Tonnégrande, Roura

Pfafstetter: 61670504

Sub-basin area

725,3km²

Upstream area

725,5km²

Discharge

46,32m³/s

Mean elev.

38m

Administrative coverage

5 dept-equivalent regions (GADM L2)

6 intersecting protected areas

  • Guyane

    IUCN V

    Regional Nature Park

    26.98 km² overlap

  • Petit Cayenne

    IUCN IV

    Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

    23.13 km² overlap

  • Grand Matoury

    IUCN IV

    Biotope Protection Order

    20.06 km² overlap

  • Mont Grand Matoury

    IUCN IV

    National Nature Reserve

    19.02 km² overlap

  • Bagne Des Annamites

    IUCN IV

    Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

    2.60 km² overlap

  • Pointe Liberte

    IUCN IV

    Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

    0.00 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

4 997 distinct species · 39 289 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

39 289 obs · 17 cellules
Obs. / cellule
≥ 8 176
6 240–8 175
2 551–6 239
2 286–2 550
< 2 286

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 22 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.

ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Rivière de Tonnégrande : 19 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 16 interactions GloBI sur 2 types (connectance 6.9%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
22
Interactions affichées
16
Connectance
0.069
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

26,1°C

Annual rain

3 404mm

Moisture idx (CMI)

0,56

Runoff

2 015mm/an

PET

1 505mm

AET

1 385mm

Mean slope

2,1°

Water table

61cm

Forest

81%

Crops

2%

Urban

0%

Protected

10%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)