Rivière· 41 segments
Río Arlanza
Crosses 2 administrative regions : Burgos, Palencia
Total length
178km
Max discharge
35m³/s
Max Strahler
5
Segments matched
41
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
7 intersecting protected areas
Sierra de la Demanda
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Natural Park
Sabinares del Arlanza
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Sabinares del Arlanza - ZEPA
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Montes Torozos y Páramos de Torquemada-Astudillo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Riberas del Río Pisuerga y afluentes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Riberas del Río Arlanza y afluentes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1 page = 1 named river (aggregation of 41 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
209 distinct species · 1 174 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 Río Arlanza : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 54 interactions GloBI sur 3 types (connectance 10.9%, filtre Serrano α=0.2). 6 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
178km
Max discharge
35,0m³/s
Max Strahler
5
Segments matched
41
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.