Ontologia

HydroBASINS lev08 watershed · #2080668470

Bassin de Rio Caia

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 7 administrative regions across 2 countries : Arronches, Badajoz, Campo Maior, Elvas, Marvão +2

12% lakePfafstetter: 23140356

Sub-basin area

814,9km²

Upstream area

814,9km²

Discharge

4,34m³/s

Mean elev.

320m

Administrative coverage

Hydrographic chain

▲ Receives from 0 basins

Source / headwater (no upstream basin)

7 dept-equivalent regions (GADM L2)

5 intersecting protected areas

  • S. Mamede

    IUCN Not Reported

    Site of Community Importance (Habitats Directive)

    256.57 km² overlap

  • Caia

    IUCN Not Reported

    Site of Community Importance (Habitats Directive)

    214.96 km² overlap

  • Serra de Sao Mamede

    IUCN V

    Nature Park

    86.76 km² overlap

  • São Vicente

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    35.64 km² overlap

  • Campo Maior

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    11.62 km² overlap

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

Species present

2 168 distinct species · 60 292 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

60 292 obs · 19 cellules
Obs. / cellule
≥ 10 219
9 398–10 218
3 448–9 397
2 078–3 447
< 2 078

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 Rio Caia : 31 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 74 interactions GloBI sur 4 types (connectance 10.5%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
74
Connectance
0.105
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°

16,3°C

Annual rain

644mm

Moisture idx (CMI)

-0,46

Runoff

168mm/an

PET

1 208mm

AET

537mm

Mean slope

2,7°

Water table

313cm

Forest

24%

Crops

53%

Urban

1%

Protected

11%

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