Ontologia

Ruisseau· 6 segments

Двойница

Crosses 4 administrative regions : Byala, Dolni Chiflik, Nesebar, Pomorie

ruisseau

Total length

57km

Max discharge

0,9m³/s

Max Strahler

2

Segments matched

6

River geography4 admin regions · 0 communes

Parent watershed

hybas-20800088702212 km²

4 administrative regions crossed (GADM L2)

  • Byala
    Varna · Bulgaria
    19.8 km
    in this dpt
  • Pomorie
    Burgas · Bulgaria
    10.1 km
    in this dpt
  • Nesebar
    Burgas · Bulgaria
    8.9 km
    in this dpt
  • Dolni Chiflik
    Varna · Bulgaria
    2.7 km
    in this dpt

5 intersecting protected areas

  • Kamchiyska planina

    IUCN Not Reported

    Special Protection Area (Birds Directive)

  • Nesebar

    IUCN Not Assigned

    State Game Husbandries

  • Emine

    IUCN Not Reported

    Special Protection Area (Birds Directive)

  • Sherba

    IUCN Not Assigned

    State Game Husbandries

  • Kamchiyska i Emenska planina

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

1 page = 1 named river (aggregation of 6 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

149 distinct species · 793 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 34 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 Двойница : 24 espèces reliées par 67 interactions GloBI sur 4 types (connectance 11.3%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
67
Connectance
0.113
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydrology (HydroRIVERS v10)

Total length

57km

Max discharge

0,9m³/s

Max Strahler

2

Segments matched

6

HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.