Ontologia

HydroBASINS lev08 watershed · #2080023400

Bassin de Van Harinxmakanaal

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 10 administrative regions : Achtkarspelen, Dantumadeel, De Fryske Marren, Harlingen, IJsselmeer +5

Coastal basin 46% lakePfafstetter: 23270305

Sub-basin area

1 453,9km²

Upstream area

1 453,9km²

Discharge

2,98m³/s

Mean elev.

-1m

Administrative coverage

10 dept-equivalent regions (GADM L2)

2 more

22 intersecting protected areas

  • NNN-FR

    IUCN Not Assigned

    Nature Reserves owned by professional nature management organizations

    98.26 km² overlap

  • Wadden Sea

    IUCN Not Applicable

    World Heritage Site (natural or mixed)

    44.57 km² overlap

  • Waddenzee

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    44.52 km² overlap

  • Waddenzee

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    44.52 km² overlap

  • Wadden Sea

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    44.51 km² overlap

  • Waddenzee

    IUCN IV

    Nature Conservation Act

    44.51 km² overlap

  • Waddensea Area

    IUCN Not Applicable

    UNESCO-MAB Biosphere Reserve

    35.60 km² overlap

  • Oudegaasterbrekken, Fluessen en omgeving

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    30.54 km² overlap

  • Oudegaasterbrekken, Fluessen en omgeving

    IUCN IV

    Nature Conservation Act

    30.54 km² overlap

13 more protected areas

  • Oudegaasterbrekken, Fluessen and surroundings

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    30.54 km² overlap

  • Oudegaasterbrekken, Fluessen en omgeving

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    28.80 km² overlap

  • IJsselmeer

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    20.07 km² overlap

  • IJsselmeer

    IUCN IV

    Nature Conservation Act

    20.07 km² overlap

  • IJsselmeer

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    20.07 km² overlap

  • IJsselmeer

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    11.16 km² overlap

  • Groote Wielen

    IUCN IV

    Nature Conservation Act

    5.92 km² overlap

  • Groote Wielen

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    5.91 km² overlap

  • Groote Wielen

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    5.91 km² overlap

  • Lauwersmeer

    IUCN II

    National Park

    1.78 km² overlap

  • Lauwersmeer

    IUCN IV

    Nature Conservation Act

    1.62 km² overlap

  • Lauwersmeer

    IUCN II

    Wetland of International Importance (Ramsar Site)

    1.62 km² overlap

  • Lauwersmeer

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    1.62 km² overlap

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

Species present

8 565 distinct species · 1 426 059 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 426 059 obs · 50 cellules
Obs. / cellule
≥ 94 036
72 192–94 035
32 162–72 191
20 231–32 161
< 20 231

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

Ecological tissue

Sample of 37 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 Van Harinxmakanaal : 29 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 124 interactions GloBI sur 6 types (connectance 16.7%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
124
Connectance
0.167
Patrimoniales
3
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°

8,8°C

Annual rain

792mm

Moisture idx (CMI)

0,25

Runoff

476mm/an

PET

597mm

AET

499mm

Mean slope

0,1°

Water table

3cm

Forest

4%

Crops

10%

Urban

8%

Protected

7%

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