Ontologia

HydroBASINS lev08 watershed · #2080022980

Bassin de Spui

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 8 administrative regions : Brielle, Dordrecht, Hellevoetsluis, Hoeksche Waard, Nissewaard +3

Coastal basin 36% lakePfafstetter: 23250900

Sub-basin area

450,1km²

Upstream area

450,1km²

Discharge

0,23m³/s

Mean elev.

-1m

Administrative coverage

8 dept-equivalent regions (GADM L2)

23 intersecting protected areas

  • NNN-ZH

    IUCN Not Assigned

    Nature Reserves owned by professional nature management organizations

    67.55 km² overlap

  • Haringvliet

    IUCN IV

    Nature Conservation Act

    33.92 km² overlap

  • Haringvliet

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    33.92 km² overlap

  • Haringvliet

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    33.92 km² overlap

  • Haringvliet

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    31.48 km² overlap

  • Voornes Duin

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    14.32 km² overlap

  • Voornes Duin

    IUCN IV

    Nature Conservation Act

    14.32 km² overlap

  • Voornes Duin

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    14.32 km² overlap

  • Hollands Diep

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    8.35 km² overlap

14 more protected areas

  • Hollands Diep

    IUCN IV

    Nature Conservation Act

    8.35 km² overlap

  • Hollands Diep

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    7.49 km² overlap

  • De Biesbosch

    IUCN II

    National Park

    7.09 km² overlap

  • Biesbosch

    IUCN II

    Wetland of International Importance (Ramsar Site)

    6.81 km² overlap

  • Biesbosch

    IUCN IV

    Nature Conservation Act

    6.81 km² overlap

  • Biesbosch

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    6.81 km² overlap

  • Biesbosch

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    6.81 km² overlap

  • Hollands Diep

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    5.85 km² overlap

  • Voordelta

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    5.64 km² overlap

  • Voordelta

    IUCN Not Reported

    Marine Protected Area (OSPAR)

    4.92 km² overlap

  • Voordelta

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    4.08 km² overlap

  • Voordelta

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    4.08 km² overlap

  • Voordelta

    IUCN IV

    Nature Conservation Act

    4.08 km² overlap

  • Voornes Duin

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    1.59 km² overlap

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

Species present

12 661 distinct species · 3 622 040 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 622 040 obs · 30 cellules
Obs. / cellule
≥ 422 248
362 119–422 247
118 998–362 118
97 124–118 997
< 97 124

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

Ecological tissue

Sample of 42 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 Spui : 37 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) + 5 bulles famille, 97 interactions GloBI documentées sur 5 types (connectance 11.3%, filtre Serrano α=0.2). Les 5 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
42
Interactions affichées
97
Connectance
0.113
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°

9,8°C

Annual rain

771mm

Moisture idx (CMI)

0,17

Runoff

473mm/an

PET

638mm

AET

515mm

Mean slope

0,2°

Water table

7cm

Forest

6%

Crops

45%

Urban

39%

Protected

15%

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