Ontologia

HydroBASINS lev08 watershed · #6080009580

Bassin de Rio Negro

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 2 administrative regions : Barreirinhas, Santo Amaro do Maranhão

Coastal basinPfafstetter: 63109500

Sub-basin area

1 119,7km²

Upstream area

1 119,7km²

Discharge

3,53m³/s

Mean elev.

23m

Administrative coverage

2 dept-equivalent regions (GADM L2)

5 intersecting protected areas

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

Species present

358 distinct species · 1 179 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 179 obs · 19 cellules
Obs. / cellule
≥ 464
312–463
39–311
5–38
< 5

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

Ecological tissue

Sample of 32 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 Rio Negro : 22 espèces reliées par 36 interactions GloBI sur 2 types (connectance 6.8%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
36
Connectance
0.068
Patrimoniales
0
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°

27,2°C

Annual rain

1 607mm

Moisture idx (CMI)

-0,03

Runoff

928mm/an

PET

1 650mm

AET

1 016mm

Mean slope

0,3°

Water table

12cm

Forest

4%

Crops

0%

Urban

0%

Protected

96%

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