Ontologia

HydroBASINS lev08 watershed · #6080030460

Bassin de San Juan

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 5 administrative regions : Castrovirreyna, Chincha, Huancavelica, Pisco, Yauyos

Pfafstetter: 67107534

Sub-basin area

3 323,3km²

Upstream area

3 324,1km²

Discharge

12,21m³/s

Mean elev.

3 016m

Administrative coverage

5 dept-equivalent regions (GADM L2)

  • Castrovirreyna
    Huancavelica · Peru
    1880.5 km²
    56.8% of basin
  • Chincha
    Ica · Peru
    1378.6 km²
    41.6% of basin
  • Pisco
    Ica · Peru
    43.5 km²
    1.3% of basin
  • Huancavelica
    Huancavelica · Peru
    4.5 km²
    0.1% of basin
  • Yauyos
    Lima · Peru
    3.6 km²
    0.1% of basin

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

Species present

293 distinct species · 1 613 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 613 obs · 43 cellules
Obs. / cellule
≥ 411
104–410
34–103
9–33
< 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 31 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 San Juan : 19 espèces reliées par 45 interactions GloBI sur 3 types (connectance 9.1%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
45
Connectance
0.091
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°

9,9°C

Annual rain

442mm

Moisture idx (CMI)

-0,58

Runoff

169mm/an

PET

1 256mm

AET

362mm

Mean slope

19,1°

Water table

835cm

Forest

18%

Crops

16%

Urban

1%

Protected

0%

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