Ontologia

HydroBASINS lev08 watershed · #2080662500

Bassin de Rio Tejo

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 5 administrative regions : Alcanena, Almeirim, Alpiarça, Cartaxo, Santarém

Pfafstetter: 23160107

Sub-basin area

169,8km²

Upstream area

67 898,3km²

Discharge

394,92m³/s

Mean elev.

53m

Administrative coverage

Hydrographic chain

Drains into

Receives from 2 basins

5 dept-equivalent regions (GADM L2)

  • Santarém
    Santarém · Portugal
    135.5 km²
    79.7% of basin
  • Almeirim
    Santarém · Portugal
    17.6 km²
    10.4% of basin
  • Alpiarça
    Santarém · Portugal
    9.8 km²
    5.8% of basin
  • Cartaxo
    Santarém · Portugal
    7.0 km²
    4.1% of basin
  • Alcanena
    Santarém · Portugal
    0.0 km²
    0.0% of basin

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

Species present

1 422 distinct species · 37 340 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

37 340 obs · 6 cellules
Obs. / cellule
≥ 12 556
12 556–12 555
7 305–12 555
5 335–7 304
< 5 335

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

Ecological tissue

Sample of 32 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 Rio Tejo : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 75 interactions GloBI sur 2 types (connectance 15.1%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
75
Connectance
0.151
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°

16,4°C

Annual rain

712mm

Moisture idx (CMI)

-0,30

Runoff

340mm/an

PET

1 018mm

AET

583mm

Mean slope

2,1°

Water table

130cm

Forest

3%

Crops

78%

Urban

4%

Protected

0%

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