Ruisseau· 6 segments
River Walkham
Crosses 2 administrative regions : NA
Total length
22km
Max discharge
1,9m³/s
Max Strahler
2
Segments matched
6
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
- NAEngland · United Kingdom20.1 kmin this dpt
- NAEngland · United Kingdom0.0 kmin this dpt
8 intersecting protected areas
Dartmoor
IUCN VNational Park
Dartmoor
IUCN Not ReportedEmerald Network
Tamar Valley
IUCN VArea of Outstanding Natural Beauty
North Dartmoor
IUCN IVSite of Special Scientific Interest
South Dartmoor Woods
IUCN Not ReportedEmerald Network
Merrivale
IUCN IVSite of Special Scientific Interest
Sampford Spiney
IUCN IVSite of Special Scientific Interest
Grenofen Wood and West Down
IUCN IVSite of Special Scientific Interest
1 page = 1 named river (aggregation of 6 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
2 233 distinct species · 17 641 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 River Walkham : 21 espèces reliées par 114 interactions GloBI sur 5 types (connectance 14.6%, filtre Serrano α=0.2). 19 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
22km
Max discharge
1,9m³/s
Max Strahler
2
Segments matched
6
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.