Ontologia

HydroBASINS lev08 watershed · #2080018850

Bassin de Rio Sizandro

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 22 administrative regions : Alcobaça, Alenquer, Amadora, Arruda dos Vinhos, Bombarral +17

Coastal basinPfafstetter: 23170010

Sub-basin area

2 611,5km²

Upstream area

2 611,5km²

Discharge

0,87m³/s

Mean elev.

113m

Administrative coverage

22 dept-equivalent regions (GADM L2)

14 more
  • Cascais97.3 km² · 3.7%
  • Vila Franca de Xira93.0 km² · 3.6%
  • Bombarral91.3 km² · 3.5%
  • Lisboa84.7 km² · 3.2%
  • Peniche77.7 km² · 3.0%
  • Alcobaça70.2 km² · 2.7%
  • Oeiras45.8 km² · 1.8%
  • Sobral de Monte Agraço32.6 km² · 1.2%
  • Arruda dos Vinhos28.5 km² · 1.1%
  • Odivelas26.3 km² · 1.0%
  • Amadora23.8 km² · 0.9%
  • Alenquer15.7 km² · 0.6%
  • Nazaré9.7 km² · 0.4%
  • Rio Maior1.7 km² · 0.1%

19 intersecting protected areas

10 more protected areas

  • Estuario do Tejo

    IUCN IV

    Nature Reserve

    11.51 km² overlap

  • Estuário do Tejo

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    9.84 km² overlap

  • Berlengas

    IUCN IV

    Nature Reserve

    4.00 km² overlap

  • Ilhas Berlengas

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    4.00 km² overlap

  • Berlengas

    IUCN Not Reported

    Marine Protected Area (OSPAR)

    4.00 km² overlap

  • Arquipélago da Berlenga

    IUCN Not Reported

    Site of Community Importance (Habitats Directive)

    0.92 km² overlap

  • Aveiro/ Nazaré

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    0.63 km² overlap

  • Paul da Tornada

    IUCN IV

    Local Nature Reserve

    0.54 km² overlap

  • Paúl de Tornada

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    0.54 km² overlap

  • Carenque

    IUCN III

    Natural Monument

    0.06 km² overlap

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

Species present

8 830 distinct species · 1 090 552 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 090 552 obs · 65 cellules
Obs. / cellule
≥ 195 707
42 752–195 706
15 899–42 751
4 365–15 898
< 4 365

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

Ecological tissue

Sample of 35 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 Sizandro : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 75 interactions GloBI sur 4 types (connectance 11.9%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
75
Connectance
0.119
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°

15,4°C

Annual rain

742mm

Moisture idx (CMI)

-0,16

Runoff

328mm/an

PET

885mm

AET

565mm

Mean slope

5,0°

Water table

270cm

Forest

46%

Crops

20%

Urban

24%

Protected

7%

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