Ontologia

Ruisseau· 2 segments

Mittelgraben

Crosses 3 administrative regions : Altmarkkreis Salzwedel, Börde, Gifhorn

ruisseau

Total length

143km

Max discharge

2,2m³/s

Max Strahler

3

Segments matched

2

River geography3 admin regions · 0 communes

Parent watershed

hybas-20803585307817 km²

3 administrative regions crossed (GADM L2)

  • Börde
    Sachsen-Anhalt · Germany
    14.8 km
    in this dpt
  • Gifhorn
    Niedersachsen · Germany
    0.7 km
    in this dpt
  • Altmarkkreis Salzwedel
    Sachsen-Anhalt · Germany
    0.0 km
    in this dpt

14 intersecting protected areas

5 more protected areas

1 page = 1 named river (aggregation of 2 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

815 distinct species · 1 526 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 39 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 Mittelgraben : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 152 interactions GloBI sur 5 types (connectance 19.5%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
152
Connectance
0.195
Patrimoniales
2
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

143km

Max discharge

2,2m³/s

Max Strahler

3

Segments matched

2

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