Ontologia

Ruisseau· 2 segments

Lange Rak

Crosses 2 administrative regions : Heerenveen, Opsterland

ruisseau

Total length

2km

Max discharge

0,6m³/s

Max Strahler

1

Segments matched

2

River geography2 admin regions · 0 communes

Parent watershed

hybas-2080023390890 km²

2 administrative regions crossed (GADM L2)

  • Heerenveen
    Fryslân · Netherlands
    13.0 km
    in this dpt
  • Opsterland
    Fryslân · Netherlands
    2.5 km
    in this dpt

4 intersecting protected areas

  • NNN-FR

    IUCN Not Assigned

    Nature Reserves owned by professional nature management organizations

  • Deelen

    IUCN IV

    Wetland of International Importance (Ramsar Site)

  • Deelen

    IUCN IV

    Nature Conservation Act

  • Deelen

    IUCN Not Reported

    Special Protection Area (Birds Directive)

1 page = 1 named river (aggregation of 2 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

1 265 distinct species · 27 541 observations

Source: GBIF Occurrence snapshot 2026-05-01.

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 Lange Rak : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 137 interactions GloBI sur 6 types (connectance 14.5%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
44
Interactions affichées
137
Connectance
0.145
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydrology (HydroRIVERS v10)

Total length

2km

Max discharge

0,6m³/s

Max Strahler

1

Segments matched

2

HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.