Rivière· 28 segments
Johnson Draw
Crosses 4 administrative regions : Gaines, Glasscock, Lea, Midland
Total length
248km
Max discharge
0,2m³/s
Max Strahler
5
Segments matched
28
River geography4 admin regions · 0 communes
4 administrative regions crossed (GADM L2)
1 page = 1 named river (aggregation of 28 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
179 distinct species · 1 275 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 45 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 Johnson Draw : 36 espèces reliées par 109 interactions GloBI sur 4 types (connectance 11.0%, filtre Serrano α=0.2). 9 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
248km
Max discharge
0,2m³/s
Max Strahler
5
Segments matched
28
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.