Ontologia

HydroBASINS lev08 watershed · #2080363960

Bassin de Tanger

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 3 administrative regions : Altmarkkreis Salzwedel, Börde, Stendal

Pfafstetter: 23283002

Sub-basin area

376km²

Upstream area

376,2km²

Discharge

1,25m³/s

Mean elev.

58m

Administrative coverage

Hydrographic chain

Drains into

Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

20 intersecting protected areas

11 more protected areas

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

Species present

1 545 distinct species · 9 249 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

9 249 obs · 12 cellules
Obs. / cellule
≥ 1 421
1 228–1 420
906–1 227
814–905
< 814

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

Ecological tissue

Sample of 30 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 Tanger : 21 espèces reliées par 79 interactions GloBI sur 4 types (connectance 17.0%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
79
Connectance
0.170
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°

8,9°C

Annual rain

529mm

Moisture idx (CMI)

-0,27

Runoff

105mm/an

PET

723mm

AET

451mm

Mean slope

1,0°

Water table

100cm

Forest

36%

Crops

40%

Urban

1%

Protected

24%

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