Ontologia

HydroBASINS lev08 watershed · #6080349330

Bassin de Rio Mearim

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 4 administrative regions : Barra do Corda, Grajaú, Itaipava do Grajaú, Jenipapo dos Vieiras

Pfafstetter: 63106902

Sub-basin area

1 938,2km²

Upstream area

1 938,5km²

Discharge

19,97m³/s

Mean elev.

220m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Rio Mearim153 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

121 distinct species · 265 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

265 obs · 19 cellules
Obs. / cellule
≥ 68
48–67
11–47
9–10
< 9

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

Ecological tissue

Sample of 18 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 Mearim : 15 espèces reliées par 13 interactions GloBI sur 4 types (connectance 8.5%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
18
Interactions affichées
13
Connectance
0.085
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°

26,1°C

Annual rain

1 168mm

Moisture idx (CMI)

-0,36

Runoff

318mm/an

PET

1 820mm

AET

966mm

Mean slope

3,5°

Water table

179cm

Forest

43%

Crops

2%

Urban

0%

Protected

28%

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