Ontologia

HydroBASINS lev08 watershed · #2080644030

Bassin de Հրազդան

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.

Pfafstetter: 28464601

Sub-basin area

812,8km²

Upstream area

7 263,5km²

Discharge

28,99m³/s

Mean elev.

1 085m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Ազատ1733 km²

▲ Receives from 2 basins

0 dept-equivalent regions (GADM L2)

    2 intersecting protected areas

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

    Species present

    1 890 distinct species · 18 649 observations

    Source: GBIF Occurrence snapshot 2026-05-01.

    Densité d'observations

    18 649 obs · 22 cellules
    Obs. / cellule
    ≥ 4 964
    2 364–4 963
    436–2 363
    246–435
    < 246

    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 Հրազդան : 28 espèces reliées par 98 interactions GloBI sur 5 types (connectance 14.7%, filtre Serrano α=0.2). 9 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°

    10,9°C

    Annual rain

    330mm

    Moisture idx (CMI)

    -0,70

    Runoff

    98mm/an

    PET

    1 124mm

    AET

    286mm

    Mean slope

    2,9°

    Water table

    390cm

    Forest

    0%

    Crops

    27%

    Urban

    45%

    Protected

    0%

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