Ruisseau· 13 segments
Ouse
Crosses 2 administrative regions : NA, West Sussex
Total length
80km
Max discharge
9m³/s
Max Strahler
3
Segments matched
13
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
- NAEngland · United Kingdom40.3 kmin this dpt
- West SussexEngland · United Kingdom13.8 kmin this dpt
25 intersecting protected areas
South Downs
IUCN VNational Park
High Weald
IUCN VArea of Outstanding Natural Beauty
Beachy Head West
IUCN IVMarine Conservation Zone
Beachy Head West
IUCN Not ReportedMarine Protected Area (OSPAR)
Brighton and Lewes Downs Biosphere
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
Clayton to Offham Escarpment
IUCN IVSite of Special Scientific Interest
Lewes Brooks
IUCN IVSite of Special Scientific Interest
Firle Escarpment
IUCN IVSite of Special Scientific Interest
Chailey Common
IUCN IVLocal Nature Reserve
16 more protected areassorted by area
Chailey Common
IUCN IVSite of Special Scientific Interest
Brighton to Newhaven Cliffs
IUCN IVSite of Special Scientific Interest
Lewes Downs
IUCN IVSite of Special Scientific Interest
Plashett Park Wood
IUCN IVSite of Special Scientific Interest
Lewes Downs
IUCN Not ReportedEmerald Network
Nymans Estate
IUCN VNature Reserve
Nature Reserve
Ardingly Reservoir
IUCN IVLocal Nature Reserve
Offham Marshes
IUCN IVSite of Special Scientific Interest
Lewes Brooks
IUCN IVNature Reserve
Castle Hill, Newhaven
IUCN IVLocal Nature Reserve
Railway Land Lewes
IUCN IVLocal Nature Reserve
Southerham Grey Pit
IUCN IVSite of Special Scientific Interest
Eastern Road Nature Reserve
IUCN IVLocal Nature Reserve
Site of Special Scientific Interest
Southerham Works Pit
IUCN IVSite of Special Scientific Interest
1 page = 1 named river (aggregation of 13 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
2 006 distinct species · 23 389 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Ouse : 23 espèces reliées par 84 interactions GloBI sur 6 types (connectance 15.9%, filtre Serrano α=0.2). 10 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
80km
Max discharge
9,0m³/s
Max Strahler
3
Segments matched
13
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.