Ontologia

HydroBASINS lev08 watershed · #2080292560

Bassin de Jaša

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 : Daugavpils, Preili, Rezekne

47% lakePfafstetter: 24280326

Sub-basin area

225,4km²

Upstream area

225,4km²

Discharge

1,93m³/s

Mean elev.

148m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Dubna482 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

11 intersecting protected areas

  • Kaučers

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    5.94 km² overlap

  • Kaučers

    IUCN V

    Protected Landscape Area

    5.94 km² overlap

  • Jašas-Bicānu ezers

    IUCN IV

    Nature Reserve

    3.11 km² overlap

  • Jašas-Bicānu ezers

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    3.11 km² overlap

  • Jaša

    IUCN IV

    Nature Reserve

    0.68 km² overlap

  • Jaša

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.68 km² overlap

  • Gadrinkas ezera meži

    IUCN IV

    Nature Reserve

    0.23 km² overlap

  • Pelēču ezera purvs

    IUCN IV

    Nature Reserve

    0.12 km² overlap

  • Pelēču ezera purvs

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.12 km² overlap

2 more protected areas

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

Species present

584 distinct species · 1 770 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 770 obs · 8 cellules
Obs. / cellule
≥ 578
578–577
285–577
207–284
< 207

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

Ecological tissue

Sample of 30 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 Jaša : 21 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 78 interactions GloBI sur 4 types (connectance 16.8%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
78
Connectance
0.168
Patrimoniales
2
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°

5,3°C

Annual rain

654mm

Moisture idx (CMI)

0,04

Runoff

270mm/an

PET

628mm

AET

485mm

Mean slope

1,1°

Water table

81cm

Forest

31%

Crops

26%

Urban

0%

Protected

4%

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