Ontologia

HydroBASINS lev08 watershed · #2080608930

Bassin de Тунджа

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 6 administrative regions across 2 countries : Bolyarovo, Elhovo, Lalapaşa, Merkez, Svilengrad +1

Pfafstetter: 21302401

Sub-basin area

1 200,9km²

Upstream area

8 582,9km²

Discharge

37,79m³/s

Mean elev.

216m

Administrative coverage

Hydrographic chain

▲ Receives from 2 basins

6 dept-equivalent regions (GADM L2)

16 intersecting protected areas

  • Sakar

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    491.26 km² overlap

  • Sakar

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    410.98 km² overlap

  • Topolovgrad

    IUCN Not Assigned

    State Game Husbandries

    309.30 km² overlap

  • Derventski vazvishenia 1

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    81.60 km² overlap

  • Zhdreloto na reka Tundzha

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    78.57 km² overlap

  • Derventski vazvishenia

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    56.63 km² overlap

  • Zhdreloto na reka Tundja

    IUCN VI

    Protected Site

    19.41 km² overlap

  • Reka Tundzha 2

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    2.60 km² overlap

  • Sladun

    IUCN VI

    Protected Site

    1.72 km² overlap

7 more protected areas

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

Species present

1 075 distinct species · 15 065 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

15 065 obs · 28 cellules
Obs. / cellule
≥ 3 855
2 078–3 854
326–2 077
140–325
< 140

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

Ecological tissue

Sample of 38 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 Тунджа : 31 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 83 interactions GloBI sur 3 types (connectance 11.8%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
83
Connectance
0.118
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°

12,5°C

Annual rain

615mm

Moisture idx (CMI)

-0,42

Runoff

107mm/an

PET

1 066mm

AET

521mm

Mean slope

3,9°

Water table

298cm

Forest

7%

Crops

56%

Urban

1%

Protected

26%

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