Ontologia

HydroBASINS lev08 watershed · #2080284370

Bassin de Daugava

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 4 administrative regions : Aizkraukle, Jekabpils, Madona, Preili

6% lakePfafstetter: 24280310

Sub-basin area

1 564,7km²

Upstream area

70 922,8km²

Discharge

517,57m³/s

Mean elev.

100m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Daugava263 km²

▲ Receives from 2 basins

4 dept-equivalent regions (GADM L2)

30 intersecting protected areas

  • Teici and Pelecare bogs

    IUCN Ia

    Wetland of International Importance (Ramsar Site)

    72.54 km² overlap

  • Teiču dabas rezervāts

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    71.46 km² overlap

  • Teiču dabas rezervāts

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    71.46 km² overlap

  • Teiču dabas rezervāts

    IUCN Ib

    Strict Nature Reserve

    71.46 km² overlap

  • Ābeļi

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    32.32 km² overlap

  • Ābeļi

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    32.32 km² overlap

  • Ābeļi

    IUCN IV

    Nature Reserve

    32.32 km² overlap

  • Gaiņu purvs

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    11.13 km² overlap

  • Gaiņu purvs

    IUCN IV

    Nature Reserve

    11.11 km² overlap

21 more protected areas

  • Rožu purvs

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    10.12 km² overlap

  • Rožu purvs

    IUCN IV

    Nature Reserve

    10.12 km² overlap

  • Rožu purvs

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    10.12 km² overlap

  • Eiduku purvs

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    8.84 km² overlap

  • Eiduku purvs

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    8.84 km² overlap

  • Eiduku purvs

    IUCN IV

    Nature Reserve

    8.83 km² overlap

  • Nomavas purvs

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    7.89 km² overlap

  • Nomavas purvs

    IUCN IV

    Nature Reserve

    7.89 km² overlap

  • Gargrodes purvs

    IUCN IV

    Nature Reserve

    6.50 km² overlap

  • Gargrodes purvs

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    6.50 km² overlap

  • Gargrodes purvs

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    6.50 km² overlap

  • Švēriņu purvs

    IUCN IV

    Nature Reserve

    6.35 km² overlap

  • Švēriņu purvs

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    6.34 km² overlap

  • Tīreļu purvs

    IUCN IV

    Nature Reserve

    4.06 km² overlap

  • Tīreļu purvs

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    4.06 km² overlap

  • Slapjo salu purvs

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    4.04 km² overlap

  • Slapjo salu purvs

    IUCN IV

    Nature Reserve

    4.04 km² overlap

  • Laukezers

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    3.26 km² overlap

  • Laukezers

    IUCN II

    Nature Park

    3.25 km² overlap

  • Spuļģu purvs

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    3.07 km² overlap

  • Spuļģu purvs

    IUCN IV

    Nature Reserve

    3.07 km² overlap

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

Species present

1 063 distinct species · 3 635 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 635 obs · 50 cellules
Obs. / cellule
≥ 502
182–501
83–181
46–82
< 46

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

Ecological tissue

Sample of 25 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 Daugava : 16 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 63 interactions GloBI sur 5 types (connectance 19.4%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
26
Interactions affichées
63
Connectance
0.194
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°

5,5°C

Annual rain

663mm

Moisture idx (CMI)

0,06

Runoff

269mm/an

PET

625mm

AET

481mm

Mean slope

1,0°

Water table

55cm

Forest

38%

Crops

23%

Urban

2%

Protected

11%

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