Ontologia

HydroBASINS lev08 watershed · #6080061510

Bassin de Arroyo Alférez

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 : El Carmen de Bolívar, Ovejas, San Jacinto, San Juan Nepomuceno, Zambrano

Pfafstetter: 61201040

Sub-basin area

730,9km²

Upstream area

730,9km²

Discharge

8,56m³/s

Mean elev.

231m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Río Magdalena1015 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

5 dept-equivalent regions (GADM L2)

4 intersecting protected areas

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

Species present

763 distinct species · 2 852 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 852 obs · 19 cellules
Obs. / cellule
≥ 832
630–831
144–629
29–143
< 29

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

Ecological tissue

Sample of 35 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 Arroyo Alférez : 22 espèces reliées par 44 interactions GloBI sur 5 types (connectance 7.4%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
44
Connectance
0.074
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°

26,6°C

Annual rain

1 206mm

Moisture idx (CMI)

-0,33

Runoff

325mm/an

PET

1 796mm

AET

1 020mm

Mean slope

5,2°

Water table

317cm

Forest

39%

Crops

9%

Urban

2%

Protected

0%

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