Ruisseau· 3 segments
Tonna
Crosses 3 administrative regions : Gotha, Sömmerda, Unstrut-Hainich-Kreis
Total length
11km
Max discharge
5,8m³/s
Max Strahler
3
Segments matched
3
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
- Unstrut-Hainich-KreisThüringen · Germany12.9 kmin this dpt
- GothaThüringen · Germany10.2 kmin this dpt
- SömmerdaThüringen · Germany0.4 kmin this dpt
9 intersecting protected areas
Ackerhügelland westlich Erfurt mit Fahnerscher Höhe
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Gera-Unstrut-Niederung um Straußfurt
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Fahner Höhe
IUCN VLandscape Protection Area
Fahnersche Höhe - Ballstädter Holz
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
NSG Unstruttal zwischen Nägelstedt und Großvargula
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Nature Reserve
Unstrut-Niederung nordöstlich Herbsleben
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Landscape Protection Area
Herbslebener Teiche
IUCN IVNature Reserve
1 page = 1 named river (aggregation of 3 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
744 distinct species · 1 684 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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).
Indicateurs du tissu écologique
Tissu écologique de Tonna : 17 espèces reliées par 90 interactions GloBI sur 5 types (connectance 19.4%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
11km
Max discharge
5,8m³/s
Max Strahler
3
Segments matched
3
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.