Ontologia

HydroBASINS lev08 watershed · #2080237220

Bassin de Тосна

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 6 administrative regions : Gatchinskiy rayon, Kirovskiy rayon, Luzhskiy rayon, Sankt-Peterburg gorsovet, Tosnenskiy rayon +1

4% lakePfafstetter: 24321040

Sub-basin area

1 637,3km²

Upstream area

1 637,6km²

Discharge

9,57m³/s

Mean elev.

60m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Чёрная речка117 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

6 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

1 770 distinct species · 10 037 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

10 037 obs · 46 cellules
Obs. / cellule
≥ 2 203
701–2 202
67–700
22–66
< 22

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

Ecological tissue

Sample of 27 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 Тосна : 21 espèces reliées par 62 interactions GloBI sur 4 types (connectance 17.7%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
27
Interactions affichées
62
Connectance
0.177
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°

4,2°C

Annual rain

625mm

Moisture idx (CMI)

0,08

Runoff

184mm/an

PET

576mm

AET

439mm

Mean slope

0,9°

Water table

54cm

Forest

84%

Crops

4%

Urban

3%

Protected

21%

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