Ontologia

HydroBASINS lev08 watershed · #2080551950

Bassin de Tanaro

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 : Alessandria

Pfafstetter: 21406801

Sub-basin area

214,2km²

Upstream area

8 181,6km²

Discharge

172,71m³/s

Mean elev.

118m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Roggia Laciazzolo303 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

1 892 distinct species · 9 315 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

9 315 obs · 14 cellules
Obs. / cellule
≥ 2 314
1 232–2 313
848–1 231
627–847
< 627

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

Ecological tissue

Sample of 38 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 Tanaro : 28 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 93 interactions GloBI sur 4 types (connectance 12.6%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
93
Connectance
0.126
Patrimoniales
2
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°

12,8°C

Annual rain

975mm

Moisture idx (CMI)

0,07

Runoff

722mm/an

PET

907mm

AET

689mm

Mean slope

0,6°

Water table

35cm

Forest

0%

Crops

86%

Urban

12%

Protected

0%

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