Ontologia

HydroBASINS lev08 watershed · #1081634490

Bassin de Senqu

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.

Pfafstetter: 12780797

Sub-basin area

439,2km²

Upstream area

8 692,8km²

Discharge

66,28m³/s

Mean elev.

2 233m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Senqu596 km²

▲ Receives from 2 basins

0 dept-equivalent regions (GADM L2)

    1 intersecting protected areas

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

    Species present

    207 distinct species · 614 observations

    Source: GBIF Occurrence snapshot 2026-05-01.

    Densité d'observations

    614 obs · 7 cellules
    Obs. / cellule
    ≥ 407
    407–406
    61–406
    50–60
    < 50

    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 Senqu : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 31 interactions GloBI sur 4 types (connectance 7.6%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

    Espèces affichées
    29
    Interactions affichées
    31
    Connectance
    0.076
    Patrimoniales
    1
    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°

    11,5°C

    Annual rain

    637mm

    Moisture idx (CMI)

    -0,46

    Runoff

    162mm/an

    PET

    1 200mm

    AET

    541mm

    Mean slope

    15,3°

    Water table

    716cm

    Forest

    0%

    Crops

    11%

    Urban

    4%

    Protected

    0%

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