Ontologia

Rivière· 3 segments

Giessen

Crosses 6 administrative regions : Dordrecht, Hardinxveld-Giessendam, Landquart, Molenlanden, Sarganserland +1

rivière

Total length

29km

Max discharge

36m³/s

Max Strahler

4

Segments matched

3

River geography6 admin regions · 0 communes

Parent watershed

hybas-20803811201423 km²

6 administrative regions crossed (GADM L2)

16 intersecting protected areas

  • NNN-ZH

    IUCN Not Assigned

    Nature Reserves owned by professional nature management organizations

  • Biesbosch

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

  • Biesbosch

    IUCN IV

    Nature Conservation Act

  • Biesbosch

    IUCN II

    Wetland of International Importance (Ramsar Site)

  • Biesbosch

    IUCN Not Reported

    Special Protection Area (Birds Directive)

  • De Biesbosch

    IUCN II

    National Park

  • Reussdelta

    IUCN IV

    Federal Inventory of Amphibian Spawning Areas of National Importance

  • Ellwald

    IUCN IV

    Federal Inventory of Amphibian Spawning Areas of National Importance

  • Reussdelta

    IUCN IV

    Federal Inventory of Alluvial Zones of National Importance

7 more protected areas

1 page = 1 named river (aggregation of 3 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

3 459 distinct species · 118 040 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 45 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 Giessen : 41 espèces reliées par 107 interactions GloBI sur 5 types (connectance 10.3%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
46
Interactions affichées
107
Connectance
0.103
Patrimoniales
0
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

29km

Max discharge

36,0m³/s

Max Strahler

4

Segments matched

3

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