Ontologia

HydroBASINS lev08 watershed · #2080604090

Bassin de Tevere

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 4 administrative regions : Rieti, Roma, Terni, Viterbo

6% lakePfafstetter: 21500630

Sub-basin area

2 397,7km²

Upstream area

14 513,7km²

Discharge

195,28m³/s

Mean elev.

281m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Tevere708 km²

▲ Receives from 2 basins

4 dept-equivalent regions (GADM L2)

30 intersecting protected areas

21 more protected areas

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

Species present

4 464 distinct species · 77 793 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

77 793 obs · 67 cellules
Obs. / cellule
≥ 9 169
3 057–9 168
850–3 056
639–849
< 639

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 Tevere : 30 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 98 interactions GloBI sur 2 types (connectance 13.2%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
98
Connectance
0.132
Patrimoniales
3
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°

14,2°C

Annual rain

827mm

Moisture idx (CMI)

-0,21

Runoff

382mm/an

PET

1 053mm

AET

660mm

Mean slope

7,0°

Water table

339cm

Forest

33%

Crops

33%

Urban

13%

Protected

15%

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