Ontologia

HydroBASINS lev08 watershed · #7080456280

Bassin de Silvies River

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 : Harney

Endorheic 6% lakePfafstetter: 77360570

Sub-basin area

801,7km²

Upstream area

3 115,5km²

Discharge

3,73m³/s

Mean elev.

1 386m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de West Fork Silvies River25 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

996 distinct species · 78 172 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

78 172 obs · 22 cellules
Obs. / cellule
≥ 22 338
18 154–22 337
1 622–18 153
815–1 621
< 815

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

Ecological tissue

Sample of 28 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 Silvies River : 19 espèces reliées par 80 interactions GloBI sur 4 types (connectance 19.7%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
29
Interactions affichées
80
Connectance
0.197
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°

6,1°C

Annual rain

310mm

Moisture idx (CMI)

-0,70

Runoff

79mm/an

PET

1 038mm

AET

270mm

Mean slope

3,3°

Water table

762cm

Forest

9%

Crops

9%

Urban

0%

Protected

0%

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