Ontologia

HydroBASINS lev08 watershed · #2080028150

Bassin de Систа

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 : Kingiseppskiy rayon, Lomonosovskiy rayon, Volosovskiy rayon

Coastal basin 22% lakePfafstetter: 24299000

Sub-basin area

1 645,8km²

Upstream area

1 645,8km²

Discharge

0,45m³/s

Mean elev.

77m

Administrative coverage

3 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

742 distinct species · 2 840 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 840 obs · 56 cellules
Obs. / cellule
≥ 335
139–334
46–138
27–45
< 27

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

Ecological tissue

Sample of 29 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 Систа : 21 espèces reliées par 61 interactions GloBI sur 5 types (connectance 14.0%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
61
Connectance
0.140
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°

4,5°C

Annual rain

687mm

Moisture idx (CMI)

0,18

Runoff

244mm/an

PET

563mm

AET

441mm

Mean slope

1,4°

Water table

98cm

Forest

87%

Crops

5%

Urban

1%

Protected

6%

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