Rivière· 2 segments
Mertajoki
Crosses 1 administrative regions : Northern Ostrobothnia
Total length
22km
Max discharge
46,1m³/s
Max Strahler
4
Segments matched
2
River geography1 admin regions · 0 communes
1 administrative regions crossed (GADM L2)
- Northern OstrobothniaOulu · Finland15.5 kmin this dpt
2 intersecting protected areas
Metsälain erityisen tärkeät elinympäristöt Pohjois-Pohjanmaa
IUCN Not AssignedForest habitats of special importance according to the Forest Act (OECM)
Metsätalouden ympäristötukikohteet Pohjois-Pohjanmaa
IUCN Not AssignedForestry environmental aid contracts (OECM)
1 page = 1 named river (aggregation of 2 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
175 distinct species · 224 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Mertajoki : 29 espèces reliées par 55 interactions GloBI sur 5 types (connectance 7.4%, 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
22km
Max discharge
46,1m³/s
Max Strahler
4
Segments matched
2
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.