Ontologia

HydroBASINS lev08 watershed · #2080361890

Bassin de Vledder- en Wapserveensche Aa

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 9 administrative regions : IJsselmeer, Kampen, Meppel, Noordoostpolder, Ooststellingwerf +4

18% lakePfafstetter: 23270230

Sub-basin area

382,3km²

Upstream area

5 866,8km²

Discharge

83,39m³/s

Mean elev.

1m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de WV Roggebot170 km²

▲ Receives from 2 basins

9 dept-equivalent regions (GADM L2)

1 more

29 intersecting protected areas

  • NNN-DR

    IUCN Not Assigned

    Nature Reserves owned by professional nature management organizations

    50.32 km² overlap

  • NNN-OV

    IUCN Not Assigned

    Nature Reserves owned by professional nature management organizations

    35.04 km² overlap

  • Drents-Friese Wold & Leggelderveld

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    33.37 km² overlap

  • Drents-Friese Wold & Leggelderveld

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    33.37 km² overlap

  • Drents-Friese Wold & Leggelderveld

    IUCN IV

    Nature Conservation Act

    33.37 km² overlap

  • Wieden

    IUCN II

    Wetland of International Importance (Ramsar Site)

    28.18 km² overlap

  • De Wieden

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    28.17 km² overlap

  • De Wieden

    IUCN IV

    Nature Conservation Act

    28.17 km² overlap

  • Drents-Friese Wold

    IUCN II

    National Park

    27.63 km² overlap

20 more protected areas

  • Zwarte Meer

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    21.62 km² overlap

  • Zwarte Meer

    IUCN IV

    Nature Conservation Act

    21.62 km² overlap

  • Zwarte Meer

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    21.62 km² overlap

  • Zwarte Meer

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    21.62 km² overlap

  • Weerribben-Wieden

    IUCN II

    National Park

    14.62 km² overlap

  • De Wieden

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    14.14 km² overlap

  • NNN-FL

    IUCN Not Assigned

    Nature Reserves owned by professional nature management organizations

    9.82 km² overlap

  • Holtingerveld

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    9.51 km² overlap

  • Holtingerveld

    IUCN IV

    Nature Conservation Act

    9.51 km² overlap

  • NNN-FR

    IUCN Not Assigned

    Nature Reserves owned by professional nature management organizations

    7.36 km² overlap

  • Uiterwaarden Zwarte Water en Vecht

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    3.85 km² overlap

  • Uiterwaarden Zwarte Water en Vecht

    IUCN IV

    Nature Conservation Act

    3.85 km² overlap

  • Ketelmeer and Vossemeer

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    3.76 km² overlap

  • Ketelmeer & Vossemeer

    IUCN IV

    Nature Conservation Act

    3.76 km² overlap

  • Ketelmeer & Vossemeer

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    3.76 km² overlap

  • Weerribben

    IUCN II

    Wetland of International Importance (Ramsar Site)

    2.64 km² overlap

  • Weerribben

    IUCN IV

    Nature Conservation Act

    2.64 km² overlap

  • Weerribben

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    2.64 km² overlap

  • Weerribben

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    2.14 km² overlap

  • Uiterwaarden Zwarte Water en Vecht

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.27 km² overlap

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

Species present

7 910 distinct species · 704 514 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

704 514 obs · 10 cellules
Obs. / cellule
≥ 274 313
274 313–274 312
67 188–274 312
58 850–67 187
< 58 850

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

Ecological tissue

Sample of 43 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 Vledder- en Wapserveensche Aa : 39 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 4 bulles famille, 68 interactions GloBI documentées sur 5 types (connectance 7.5%, filtre Serrano α=0.2). Les 4 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
43
Interactions affichées
68
Connectance
0.075
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°

8,9°C

Annual rain

781mm

Moisture idx (CMI)

0,15

Runoff

468mm/an

PET

664mm

AET

531mm

Mean slope

0,3°

Water table

17cm

Forest

9%

Crops

21%

Urban

6%

Protected

27%

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