Ontologia

HydroBASINS lev08 watershed · #2080353930

Bassin de Orlanka

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 2 administrative regions : Bielsk, Hajnówka

Pfafstetter: 24248096

Sub-basin area

514,5km²

Upstream area

514,5km²

Discharge

2,58m³/s

Mean elev.

154m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Narew1195 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

11 intersecting protected areas

  • Puszcza Białowieska

    IUCN Not Assigned

    Protected Landscape Area

    67.76 km² overlap

  • Jelonka

    IUCN Not Reported

    Site of Community Importance (Habitats Directive)

    19.09 km² overlap

  • Puszcza Białowieska

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    4.99 km² overlap

  • Puszcza Białowieska

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    4.99 km² overlap

  • Dolina Górnej Narwi

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    4.15 km² overlap

  • Ostoja w Dolinie Górnej Narwi

    IUCN Not Reported

    Site of Community Importance (Habitats Directive)

    4.15 km² overlap

  • Białowieża Forest

    IUCN Not Applicable

    World Heritage Site (natural or mixed)

    3.83 km² overlap

  • Dolina Narwi

    IUCN Not Assigned

    Protected Landscape Area

    3.50 km² overlap

  • Jelonka

    IUCN IV

    Nature Reserve

    2.15 km² overlap

2 more protected areas

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

Species present

984 distinct species · 5 949 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

5 949 obs · 15 cellules
Obs. / cellule
≥ 1 184
952–1 183
463–951
371–462
< 371

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

Ecological tissue

Sample of 27 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 Orlanka : 15 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 104 interactions GloBI sur 5 types (connectance 27.5%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
28
Interactions affichées
104
Connectance
0.275
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°

7,0°C

Annual rain

568mm

Moisture idx (CMI)

-0,21

Runoff

157mm/an

PET

720mm

AET

481mm

Mean slope

0,8°

Water table

71cm

Forest

11%

Crops

48%

Urban

3%

Protected

14%

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