Ontologia

Rivière· 39 segments

Березайка

Crosses 3 administrative regions : Bologovskiy rayon, Borovichskiy rayon, Valdayskiy rayon

rivière

Total length

136km

Max discharge

27,8m³/s

Max Strahler

5

Segments matched

39

River geography3 admin regions · 0 communes

Parent watershed

hybas-2080261500260 km²

3 administrative regions crossed (GADM L2)

8 intersecting protected areas

1 page = 1 named river (aggregation of 39 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

142 distinct species · 186 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 28 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Березайка : 20 espèces reliées par 47 interactions GloBI sur 5 types (connectance 11.6%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
29
Interactions affichées
47
Connectance
0.116
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydrology (HydroRIVERS v10)

Total length

136km

Max discharge

27,8m³/s

Max Strahler

5

Segments matched

39

HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.