Ontologia

HydroBASINS lev08 watershed · #2080549770

Bassin de la Romanche

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 3 administrative regions : Hautes-Alpes, Isère, Savoie

5% lakePfafstetter: 21602442

Sub-basin area

1 236,8km²

Upstream area

1 236,8km²

Discharge

19,88m³/s

Mean elev.

1 948m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de la Gresse246 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

65 communes (GADM L5)

30 intersecting protected areas

21 more protected areas

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

Species present

9 368 distinct species · 1 352 112 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 352 112 obs · 34 cellules
Obs. / cellule
≥ 129 248
72 012–129 247
47 760–72 011
31 695–47 759
< 31 695

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

Ecological tissue

Sample of 16 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 la Romanche : 15 espèces + 1 bulle famille, 29 interactions GloBI documentées sur 2 types (connectance 24.2%, filtre Serrano α=0.2). Les 1 bulle regroupe des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
16
Interactions affichées
29
Connectance
0.242
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°

3,0°C

Annual rain

1 407mm

Moisture idx (CMI)

0,53

Runoff

504mm/an

PET

597mm

AET

550mm

Mean slope

27,0°

Water table

921cm

Forest

54%

Crops

2%

Urban

1%

Protected

61%

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