Ontologia

HydroBASINS lev08 watershed · #2080603510

Bassin de l'Onyar

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 : Girona

Pfafstetter: 21603604

Sub-basin area

283,2km²

Upstream area

283,3km²

Discharge

2,63m³/s

Mean elev.

168m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Riu Ter395 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

1 dept-equivalent regions (GADM L2)

6 intersecting protected areas

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

Species present

2 775 distinct species · 36 189 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

36 189 obs · 7 cellules
Obs. / cellule
≥ 11 639
11 639–11 638
5 113–11 638
4 630–5 112
< 4 630

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

Ecological tissue

Sample of 33 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 l'Onyar : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 101 interactions GloBI sur 6 types (connectance 19.1%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
101
Connectance
0.191
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°

15,1°C

Annual rain

751mm

Moisture idx (CMI)

-0,15

Runoff

291mm/an

PET

880mm

AET

630mm

Mean slope

3,6°

Water table

233cm

Forest

79%

Crops

7%

Urban

9%

Protected

25%

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