Ontologia

HydroBASINS lev08 watershed · #2080018810

Bassin de Rio Sorraia

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 : Benavente, Montijo, Palmela, Vila Franca de Xira

2% lakePfafstetter: 23150081

Sub-basin area

284,5km²

Upstream area

7 720,2km²

Discharge

60,89m³/s

Mean elev.

24m

Administrative coverage

Hydrographic chain

▼ Drains into

Outlet (drains to ocean / endorheic)

▲ Receives from 2 basins

4 dept-equivalent regions (GADM L2)

  • Benavente
    Santarém · Portugal
    189.6 km²
    66.6% of basin
  • Montijo
    Setúbal · Portugal
    49.4 km²
    17.3% of basin
  • Vila Franca de Xira
    Lisboa · Portugal
    45.4 km²
    15.9% of basin
  • Palmela
    Setúbal · Portugal
    0.1 km²
    0.0% of basin

4 intersecting protected areas

  • Estuário do Tejo

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    173.02 km² overlap

  • Estuário do Tejo

    IUCN Not Reported

    Site of Community Importance (Habitats Directive)

    171.94 km² overlap

  • Estuario do Tejo

    IUCN IV

    Nature Reserve

    27.53 km² overlap

  • Estuário do Tejo

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    27.48 km² overlap

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

Species present

1 566 distinct species · 467 902 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

467 902 obs · 10 cellules
Obs. / cellule
≥ 318 635
318 635–318 634
18 199–318 634
5 311–18 198
< 5 311

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

Ecological tissue

Sample of 30 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 Sorraia : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 50 interactions GloBI sur 2 types (connectance 11.5%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
50
Connectance
0.115
Patrimoniales
1
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°

16,9°C

Annual rain

665mm

Moisture idx (CMI)

-0,37

Runoff

277mm/an

PET

1 050mm

AET

559mm

Mean slope

0,6°

Water table

64cm

Forest

27%

Crops

28%

Urban

1%

Protected

10%

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