Ruisseau· 4 segments
Olšina
Crosses 4 administrative regions : Jablonec nad Nisou, Jelenia Góra, Semily, Český Krumlov
Total length
30km
Max discharge
0,9m³/s
Max Strahler
2
Segments matched
4
River geography4 admin regions · 0 communes
4 administrative regions crossed (GADM L2)
- Český KrumlovJihočeský · Czechia16.9 kmin this dpt
- Jablonec nad NisouLiberecký · Czechia3.6 kmin this dpt
- SemilyLiberecký · Czechia2.1 kmin this dpt
- Jelenia GóraDolnośląskie · Poland2.1 kmin this dpt
23 intersecting protected areas
Šumava
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Šumava
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
Šumava
IUCN VProtected Landscape Area
Šumava
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Ancient and Primeval Beech Forests of the Carpathians and Other Regions of Europe
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
Krkonoše
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
Krkonoše
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Krkonoše
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Jizerské hory
IUCN VProtected Landscape Area
14 more protected areassorted by area
Krkonošský národní park
IUCN VNational Park
Boletice
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Boletice
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Góry Izerskie
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Jizerské hory
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Boletice
IUCN IVContract Protected Area
Torfowiska Gór Izerskich
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Jizera Headwaters
IUCN Not ReportedWetland of International Importance (Ramsar Site)
Rašeliniště Jizery
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Rašeliniště Jizery
IUCN IbNational Nature Reserve
Bukovec
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Olšina
IUCN IVNational Nature Monument
Bukovec
IUCN IVNature Reserve
Olšov
IUCN IVNature Reserve
1 page = 1 named river (aggregation of 4 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
180 distinct species · 228 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Olšina : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 110 interactions GloBI sur 5 types (connectance 17.5%, filtre Serrano α=0.2). 12 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
30km
Max discharge
0,9m³/s
Max Strahler
2
Segments matched
4
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.