Ontologia

HydroBASINS lev08 watershed · #1081657970

Bassin de Witrivier

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 1 administrative regions : Cacadu

Pfafstetter: 12558014

Sub-basin area

319,5km²

Upstream area

319,6km²

Discharge

0,57m³/s

Mean elev.

486m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sundays River81 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

1 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

1 522 distinct species · 10 969 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

10 969 obs · 9 cellules
Obs. / cellule
≥ 6 655
6 655–6 654
727–6 654
639–726
< 639

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

Ecological tissue

Sample of 29 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 Witrivier : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 26 interactions GloBI sur 3 types (connectance 6.4%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
29
Interactions affichées
26
Connectance
0.064
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°

17,3°C

Annual rain

446mm

Moisture idx (CMI)

-0,69

Runoff

54mm/an

PET

1 436mm

AET

379mm

Mean slope

12,3°

Water table

826cm

Forest

91%

Crops

12%

Urban

0%

Protected

42%

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