Ruisseau

Alte Aa

Crosses 3 administrative regions : Borken, Oude IJsselstreek, Wesel

ruisseau

Total length

7km

Max discharge

2,9m³/s

Max Strahler

Segments matched

River geography3 admin regions · 0 communes

Parent watershed

hybas-2080381290318 km²

3 administrative regions crossed (GADM L2)

Borken
Nordrhein-Westfalen · Germany
15.4 km
in this dpt
Wesel
Nordrhein-Westfalen · Germany
5.4 km
in this dpt
Oude IJsselstreek
Gelderland · Netherlands
2.1 km
in this dpt

16 intersecting protected areas

NNN-GE
IUCN Not Assigned
Nature Reserves owned by professional nature management organizations
NSG Isselniederung
IUCN IV
Nature Reserve
LSG-Isselniederung
IUCN V
Landscape Protection Area
LSG Breels - Herzebocholt
IUCN V
Landscape Protection Area
LSG-Werther Bruch
IUCN V
Landscape Protection Area
LSG Issel
IUCN V
Landscape Protection Area
LSG Diesfeld - Vehlingen
IUCN V
Landscape Protection Area
LSG Dwarsfeld
IUCN V
Landscape Protection Area
LSG Clev\'sche Landwehr - Wolfstrang
IUCN V
Landscape Protection Area

7 more protected areassorted by area

LSG Isselpende
IUCN V
Landscape Protection Area
NSG Isselburg - Werth
IUCN IV
Nature Reserve
LSG Isselburg-Sued - Kalfurter Heide
IUCN V
Landscape Protection Area
LSG Regnieter Bach
IUCN V
Landscape Protection Area
LSG Werth - Sued
IUCN V
Landscape Protection Area
NSG Huelsdonker Senke, westlich von Isselburg
IUCN IV
Nature Reserve
Klevsche Landwehr, Anholt. Issel, Feldschlaggr. u. Regnieter Bach
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)

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

Species present

922 distinct species · 4 501 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

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Alte Aa : 25 espèces reliées par 125 interactions GloBI sur 6 types (connectance 14.5%, filtre Serrano α=0.2). 17 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

125

Connectance

0.145

Patrimoniales

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)