Ontologia

HydroBASINS lev08 watershed · #2080286450

Bassin de Zaņa

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 1 administrative regions : Saldus

4% lakePfafstetter: 24270638

Sub-basin area

213,4km²

Upstream area

213,4km²

Discharge

2,59m³/s

Mean elev.

86m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Venta735 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

1 dept-equivalent regions (GADM L2)

5 intersecting protected areas

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

Species present

149 distinct species · 320 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

320 obs · 7 cellules
Obs. / cellule
≥ 249
249–248
15–248
13–14
< 13

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

Ecological tissue

Sample of 34 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 Zaņa : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 74 interactions GloBI sur 6 types (connectance 13.2%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
74
Connectance
0.132
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°

6,2°C

Annual rain

717mm

Moisture idx (CMI)

0,19

Runoff

382mm/an

PET

581mm

AET

461mm

Mean slope

1,0°

Water table

46cm

Forest

18%

Crops

37%

Urban

0%

Protected

7%

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