Rivière· 3 segments
Holt-Marcal
Crosses 1 administrative regions : Győr
Total length
17km
Max discharge
44,6m³/s
Max Strahler
5
Segments matched
3
River geography1 admin regions · 0 communes
1 administrative regions crossed (GADM L2)
- GyőrGyor-Moson-Sopron · Hungary16.6 kmin this dpt
2 intersecting protected areas
Landscape Protection Area
Rába
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1 page = 1 named river (aggregation of 3 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
562 distinct species · 1 896 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 49 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).
Indicateurs du tissu écologique
Tissu écologique de Holt-Marcal : 43 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 113 interactions GloBI sur 5 types (connectance 9.2%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
17km
Max discharge
44,6m³/s
Max Strahler
5
Segments matched
3
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.