Ontologia

HydroBASINS lev08 watershed · #2080346910

Bassin de Свень

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 3 administrative regions : Bryansk, Bryanskiy rayon, Navlinskiy rayon

Pfafstetter: 22520937

Sub-basin area

111,3km²

Upstream area

13 712,4km²

Discharge

72,59m³/s

Mean elev.

176m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Десна640 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

1 797 distinct species · 20 889 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

20 889 obs · 4 cellules
Obs. / cellule
≥ 13 202
13 202–13 201
7 070–13 201
7 070–7 069
< 7 070

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

Ecological tissue

Sample of 22 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 Свень : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 42 interactions GloBI sur 4 types (connectance 18.2%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
22
Interactions affichées
42
Connectance
0.182
Patrimoniales
1
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°

5,2°C

Annual rain

577mm

Moisture idx (CMI)

-0,16

Runoff

149mm/an

PET

685mm

AET

486mm

Mean slope

1,1°

Water table

128cm

Forest

70%

Crops

3%

Urban

31%

Protected

0%

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