Ontologia

HydroBASINS lev08 watershed · #1081657810

Bassin de Trakarivier

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 : Cacadu, Eden

Pfafstetter: 12580901

Sub-basin area

91,7km²

Upstream area

3 044,5km²

Discharge

1,81m³/s

Mean elev.

808m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Olifantsrivier2417 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

475 distinct species · 1 816 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 816 obs · 2 cellules
Obs. / cellule
≥ 1 778
1 778–1 777
1 778–1 777
1 778–1 777
< 1 778

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

Ecological tissue

Sample of 38 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 Trakarivier : 29 espèces reliées par 35 interactions GloBI sur 4 types (connectance 5.0%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
35
Connectance
0.050
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°

15,5°C

Annual rain

489mm

Moisture idx (CMI)

-0,63

Runoff

50mm/an

PET

1 319mm

AET

415mm

Mean slope

10,7°

Water table

696cm

Forest

4%

Crops

1%

Urban

0%

Protected

11%

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