Ontologia

HydroBASINS lev08 watershed · #2080281060

Bassin de Ogre

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, Cesis, Madona, Ogre

16% lakePfafstetter: 24280104

Sub-basin area

1 669,8km²

Upstream area

1 669,9km²

Discharge

16,63m³/s

Mean elev.

150m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Daugava613 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

30 intersecting protected areas

  • Vestiena

    IUCN V

    Protected Landscape Area

    137.25 km² overlap

  • Vestiena

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    137.25 km² overlap

  • Vestiena

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    137.25 km² overlap

  • Vecpiebalga

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    86.49 km² overlap

  • Vecpiebalga

    IUCN V

    Protected Landscape Area

    86.49 km² overlap

  • Vecpiebalga

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    86.49 km² overlap

  • Ogres ieleja

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    75.26 km² overlap

  • Ogres ieleja

    IUCN II

    Nature Park

    75.25 km² overlap

  • Gaiziņkalns

    IUCN II

    Nature Park

    12.81 km² overlap

21 more protected areas

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

Species present

1 426 distinct species · 7 071 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

7 071 obs · 55 cellules
Obs. / cellule
≥ 1 135
366–1 134
85–365
32–84
< 32

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

Ecological tissue

Sample of 43 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 Ogre : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 75 interactions GloBI sur 5 types (connectance 8.3%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
43
Interactions affichées
75
Connectance
0.083
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

681mm

Moisture idx (CMI)

0,13

Runoff

300mm/an

PET

595mm

AET

469mm

Mean slope

1,4°

Water table

82cm

Forest

32%

Crops

11%

Urban

0%

Protected

19%

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