Rivière· 15 segments
Pisa
Crosses 4 administrative regions : Kolno, Ostrołęka, Pisz, Łomża
Total length
147km
Max discharge
22,5m³/s
Max Strahler
5
Segments matched
15
River geography4 admin regions · 0 communes
4 administrative regions crossed (GADM L2)
9 intersecting protected areas
Puszcza Piska
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Ostoja Piska
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Równiny Kurpiowskiej i Doliny Dolnej Narwi
IUCN Not AssignedProtected Landscape Area
Puszczy i Jezior Piskich
IUCN Not AssignedProtected Landscape Area
Dolina Pisy
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Myszynieckie Bory Sasankowe
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Mokradła Kolneńskie i Kurpiowskie
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Torfowisko Serafin
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Torfowisko Serafin
IUCN IVNature Reserve
1 page = 1 named river (aggregation of 15 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
181 distinct species · 483 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Pisa : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 108 interactions GloBI sur 4 types (connectance 18.2%, filtre Serrano α=0.2). 9 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
147km
Max discharge
22,5m³/s
Max Strahler
5
Segments matched
15
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.