Ontologia

HydroBASINS lev08 watershed · #2080265440

Bassin de Березайка

A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.

Crosses 2 administrative regions : Bologovskiy rayon, Valdayskiy rayon

34% lakePfafstetter: 24329069

Sub-basin area

289,1km²

Upstream area

289,1km²

Discharge

2,73m³/s

Mean elev.

214m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Березайка386 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Valdajskij

    IUCN IV

    State Natural Zakaznik

    23.84 km² overlap

  • Valdaiskiy

    IUCN Not Applicable

    UNESCO-MAB Biosphere Reserve

    6.79 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

16 distinct species · 17 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

17 obs · 7 cellules
Obs. / cellule
≥ 6
6–5
3–5
1–2
< 1

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 6 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 Bassin de Березайка : 6 espèces reliées par 4 interactions GloBI sur 2 types (connectance 26.7%, filtre Serrano α=0.2).

Espèces affichées
6
Interactions affichées
4
Connectance
0.267
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

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

Hydroclimate (BasinATLAS lev08)

Mean T°

3,4°C

Annual rain

685mm

Moisture idx (CMI)

0,10

Runoff

291mm/an

PET

616mm

AET

477mm

Mean slope

1,5°

Water table

99cm

Forest

91%

Crops

4%

Urban

0%

Protected

5%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)