Ontologia

Ruisseau· 10 segments

Agger

Crosses 4 administrative regions : Märkischer Kreis, Oberbergischer Kreis, Rhein-Sieg-Kreis, Rheinisch-Bergischer Kreis

ruisseau

Total length

71km

Max discharge

8,2m³/s

Max Strahler

3

Segments matched

10

River geography4 admin regions · 0 communes

Parent watershed

hybas-2080409990827 km²

4 administrative regions crossed (GADM L2)

30 intersecting protected areas

21 more protected areas

1 page = 1 named river (aggregation of 10 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

1 151 distinct species · 4 588 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 44 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 Agger : 37 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 86 interactions GloBI sur 5 types (connectance 9.1%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
44
Interactions affichées
86
Connectance
0.091
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

71km

Max discharge

8,2m³/s

Max Strahler

3

Segments matched

10

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