Ontologia

HydroBASINS lev08 watershed · #2080023240

Bassin de Vecht

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 18 administrative regions : Amersfoort, Amsterdam, Bunnik, De Bilt, De Ronde Venen +13

53% lakePfafstetter: 23270106

Sub-basin area

371,4km²

Upstream area

371,6km²

Discharge

6,43m³/s

Mean elev.

3m

Administrative coverage

18 dept-equivalent regions (GADM L2)

10 more

16 intersecting protected areas

  • NNN-NH

    IUCN Not Assigned

    Nature Reserves owned by professional nature management organizations

    68.12 km² overlap

  • Oostelijke Vechtplassen

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    64.76 km² overlap

  • Oostelijke Vechtplassen

    IUCN IV

    Nature Conservation Act

    64.76 km² overlap

  • Oostelijke Vechtplassen

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    64.76 km² overlap

  • NNN-UT

    IUCN Not Assigned

    Nature Reserves owned by professional nature management organizations

    63.54 km² overlap

  • Oostelijke Vechtplassen

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    44.02 km² overlap

  • Utrechtse Heuvelrug

    IUCN II

    National Park

    12.59 km² overlap

  • Naardermeer

    IUCN IV

    Nature Conservation Act

    4.60 km² overlap

  • Naardermeer

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    4.60 km² overlap

7 more protected areas

  • Naardermeer

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    4.60 km² overlap

  • Naardermeer

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    4.44 km² overlap

  • Markermeer & IJmeer

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    0.15 km² overlap

  • Markermeer & IJmeer

    IUCN IV

    Nature Conservation Act

    0.15 km² overlap

  • Markermeer & IJmeer

    IUCN II

    Wetland of International Importance (Ramsar Site)

    0.15 km² overlap

  • IJmeer

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    0.12 km² overlap

  • Markermeer & IJmeer

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.04 km² overlap

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

Species present

13 376 distinct species · 2 458 481 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 458 481 obs · 11 cellules
Obs. / cellule
≥ 370 001
344 096–370 000
300 698–344 095
224 087–300 697
< 224 087

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

Ecological tissue

Sample of 40 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 Vecht : 33 espèces + 7 bulles famille, 75 interactions GloBI documentées sur 4 types (connectance 9.6%, filtre Serrano α=0.2). Les 7 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
40
Interactions affichées
75
Connectance
0.096
Patrimoniales
0
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°

9,3°C

Annual rain

804mm

Moisture idx (CMI)

0,16

Runoff

481mm/an

PET

676mm

AET

537mm

Mean slope

0,3°

Water table

17cm

Forest

19%

Crops

4%

Urban

65%

Protected

19%

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