Ontologia

Ruisseau· 6 segments

Jahna

Crosses 2 administrative regions : Meißen, Mittelsachsen

ruisseau

Total length

36km

Max discharge

1,4m³/s

Max Strahler

2

Segments matched

6

River geography2 admin regions · 0 communes

Parent watershed

hybas-20803902701773 km²

2 administrative regions crossed (GADM L2)

  • Meißen
    Sachsen · Germany
    19.0 km
    in this dpt
  • Mittelsachsen
    Sachsen · Germany
    11.0 km
    in this dpt

9 intersecting protected areas

1 page = 1 named river (aggregation of 6 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

819 distinct species · 1 546 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 38 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 Jahna : 27 espèces reliées par 131 interactions GloBI sur 5 types (connectance 17.7%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
131
Connectance
0.177
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

36km

Max discharge

1,4m³/s

Max Strahler

2

Segments matched

6

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