Ontologia

HydroBASINS lev08 watershed · #2080268750

Bassin de Gauja

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 5 administrative regions across 2 countries : Aluksne, Cesis, Gulbene, Taheva, Valka

3% lakePfafstetter: 24292070

Sub-basin area

1 115,8km²

Upstream area

2 594,6km²

Discharge

27,65m³/s

Mean elev.

122m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Gauja1337 km²

▲ Receives from 2 basins

5 dept-equivalent regions (GADM L2)

30 intersecting protected areas

  • Ziemeļgauja

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    34.18 km² overlap

  • Ziemeļgauja

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    34.18 km² overlap

  • Ziemeļgauja

    IUCN V

    Protected Landscape Area

    34.17 km² overlap

  • Mežole

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    28.35 km² overlap

  • Mežole

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    28.35 km² overlap

  • Mežole

    IUCN IV

    Nature Reserve

    28.35 km² overlap

  • Rauza

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    8.11 km² overlap

  • Rauza

    IUCN IV

    Nature Reserve

    8.11 km² overlap

  • Sloku purvs

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    5.36 km² overlap

21 more protected areas

  • Sloku purvs

    IUCN IV

    Nature Reserve

    5.36 km² overlap

  • Šepka

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    3.57 km² overlap

  • Šepka

    IUCN IV

    Nature Reserve

    3.57 km² overlap

  • Kadājs

    IUCN IV

    Nature Reserve

    3.28 km² overlap

  • Kadāajs

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    3.28 km² overlap

  • Koiva-Mustjõe

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    2.99 km² overlap

  • Koiva-Mustjõe luha

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    2.99 km² overlap

  • Koiva-Mustjõe maastikukaitseala

    IUCN Not Assigned

    Protected landscape (nature park)

    2.99 km² overlap

  • Vidagas upes meži

    IUCN IV

    Nature Reserve

    2.22 km² overlap

  • Koiva-Mustjõe MKA, Koiva konnu skv.

    IUCN IV

    Managed conservation zone of protected landscape

    1.54 km² overlap

  • Lielais purvs

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.50 km² overlap

  • Lielais purvs

    IUCN IV

    Nature Reserve

    1.50 km² overlap

  • Vidagas meži

    IUCN IV

    Micro-reserve

    1.30 km² overlap

  • Vidagas meži

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.30 km² overlap

  • Bērzoles riests

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.03 km² overlap

  • Bērzoles riests

    IUCN IV

    Micro-reserve

    1.03 km² overlap

  • Lepuru purvs

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.96 km² overlap

  • Lepuru purvs

    IUCN IV

    Nature Reserve

    0.96 km² overlap

  • Koiva-Mustjõe MKA, Koiva pv.

    IUCN V

    Limited management zone of protected landscape

    0.84 km² overlap

  • Mētru mežs

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.77 km² overlap

  • Mētru mežs

    IUCN IV

    Nature Reserve

    0.77 km² overlap

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

Species present

1 482 distinct species · 5 283 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

5 283 obs · 41 cellules
Obs. / cellule
≥ 1 442
329–1 441
73–328
16–72
< 16

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

Ecological tissue

Sample of 37 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 Gauja : 27 espèces reliées par 98 interactions GloBI sur 6 types (connectance 14.7%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
98
Connectance
0.147
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°

5,0°C

Annual rain

664mm

Moisture idx (CMI)

0,11

Runoff

320mm/an

PET

592mm

AET

462mm

Mean slope

1,3°

Water table

75cm

Forest

56%

Crops

13%

Urban

0%

Protected

8%

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