Ontologia

HydroBASINS lev08 watershed · #2080023230

Bassin · #2080023230

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 6 administrative regions : Amsterdam, Diemen, Gooise Meren, IJsselmeer, Ouder-Amstel +1

Coastal basin 74% lakePfafstetter: 23270105

Sub-basin area

26,5km²

Upstream area

26,5km²

Discharge

0,41m³/s

Mean elev.

0m

Administrative coverage

6 dept-equivalent regions (GADM L2)

5 intersecting protected areas

  • NNN-NH

    IUCN Not Assigned

    Nature Reserves owned by professional nature management organizations

    3.35 km² overlap

  • Markermeer & IJmeer

    IUCN IV

    Nature Conservation Act

    1.94 km² overlap

  • Markermeer & IJmeer

    IUCN II

    Wetland of International Importance (Ramsar Site)

    1.94 km² overlap

  • Markermeer & IJmeer

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    1.94 km² overlap

  • IJmeer

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    1.69 km² overlap

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

Species present

8 586 distinct species · 1 088 133 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 088 133 obs · 6 cellules
Obs. / cellule
≥ 328 317
328 317–328 316
288 450–328 316
165 333–288 449
< 165 333

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

Ecological tissue

Sample of 41 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 · #2080023230 : 35 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 6 bulles famille, 60 interactions GloBI documentées sur 4 types (connectance 7.3%, filtre Serrano α=0.2). Les 6 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
41
Interactions affichées
60
Connectance
0.073
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

803mm

Moisture idx (CMI)

0,20

Runoff

485mm/an

PET

641mm

AET

520mm

Mean slope

0,2°

Water table

7cm

Forest

22%

Crops

10%

Urban

91%

Protected

7%

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