Ontologia

HydroBASINS lev08 watershed · #2080023260

Bassin de Grote Valkse beek

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 34 administrative regions : Almere, Amersfoort, Apeldoorn, Baarn, Barneveld +29

74% lakePfafstetter: 23270108

Sub-basin area

1 668,1km²

Upstream area

1 668,1km²

Discharge

30,96m³/s

Mean elev.

16m

Administrative coverage

34 dept-equivalent regions (GADM L2)

26 more

23 intersecting protected areas

  • NNN-GE

    IUCN Not Assigned

    Nature Reserves owned by professional nature management organizations

    467.74 km² overlap

  • Veluwe

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    418.83 km² overlap

  • Veluwe

    IUCN IV

    Nature Conservation Act

    418.83 km² overlap

  • Veluwe

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    418.25 km² overlap

  • NNN-UT

    IUCN Not Assigned

    Nature Reserves owned by professional nature management organizations

    140.47 km² overlap

  • Veluwerandmeren

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    55.49 km² overlap

  • Veluwerandmeren

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    55.49 km² overlap

  • Veluwerandmeren

    IUCN IV

    Nature Conservation Act

    55.49 km² overlap

  • Veluwerandmeren

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    55.49 km² overlap

14 more protected areas

  • Utrechtse Heuvelrug

    IUCN II

    National Park

    54.60 km² overlap

  • NNN-FL

    IUCN Not Assigned

    Nature Reserves owned by professional nature management organizations

    45.32 km² overlap

  • NNN-NH

    IUCN Not Assigned

    Nature Reserves owned by professional nature management organizations

    31.71 km² overlap

  • De Hoge Veluwe

    IUCN II

    National Park

    17.40 km² overlap

  • Eemmeer & Gooimeer Zuidoever

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    15.85 km² overlap

  • Eemmeer & Gooimeer Zuidoever

    IUCN IV

    Nature Conservation Act

    15.85 km² overlap

  • Arkemheen

    IUCN IV

    Nature Conservation Act

    14.22 km² overlap

  • Arkemheen

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    14.22 km² overlap

  • Binnenveld

    IUCN IV

    Nature Conservation Act

    1.11 km² overlap

  • Binnenveld

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.11 km² overlap

  • Markermeer & IJmeer

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    0.14 km² overlap

  • Markermeer & IJmeer

    IUCN II

    Wetland of International Importance (Ramsar Site)

    0.14 km² overlap

  • Markermeer & IJmeer

    IUCN IV

    Nature Conservation Act

    0.14 km² overlap

  • IJmeer

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    0.11 km² overlap

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

Species present

17 486 distinct species · 5 516 981 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

5 516 981 obs · 54 cellules
Obs. / cellule
≥ 421 457
198 302–421 456
105 235–198 301
72 809–105 234
< 72 809

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

Ecological tissue

Sample of 44 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 Grote Valkse beek : 39 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 5 bulles famille, 81 interactions GloBI documentées sur 6 types (connectance 8.6%, filtre Serrano α=0.2). Les 5 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
44
Interactions affichées
81
Connectance
0.086
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°

9,2°C

Annual rain

792mm

Moisture idx (CMI)

0,14

Runoff

492mm/an

PET

683mm

AET

541mm

Mean slope

0,6°

Water table

62cm

Forest

24%

Crops

15%

Urban

30%

Protected

34%

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