Ruisseau· 5 segments

Jizerka

Crosses 4 administrative regions : Jablonec nad Nisou, Jelenia Góra, Semily, Trutnov

ruisseau

Total length

29km

Max discharge

1m³/s

Max Strahler

Segments matched

River geography4 admin regions · 0 communes

Parent watershed

hybas-20804251602164 km²

4 administrative regions crossed (GADM L2)

Semily
Liberecký · Czechia
13.4 km
in this dpt
Trutnov
Královéhradecký · Czechia
3.9 km
in this dpt
Jablonec nad Nisou
Liberecký · Czechia
1.7 km
in this dpt
Jelenia Góra
Dolnośląskie · Poland
0.2 km
in this dpt

17 intersecting protected areas

Ancient and Primeval Beech Forests of the Carpathians and Other Regions of Europe
IUCN Not Applicable
World Heritage Site (natural or mixed)
Krkonoše
IUCN Not Applicable
UNESCO-MAB Biosphere Reserve
Krkonoše
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
Krkonoše
IUCN Not Reported
Special Protection Area (Birds Directive)
Jizerské hory
IUCN V
Protected Landscape Area
Krkonošský národní park
IUCN V
National Park
Góry Izerskie
IUCN Not Reported
Special Protection Area (Birds Directive)
Jizerské hory
IUCN Not Reported
Special Protection Area (Birds Directive)
Torfowiska Gór Izerskich
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)

8 more protected areassorted by area

Jizera Headwaters
IUCN Not Reported
Wetland of International Importance (Ramsar Site)
Údolí Jizery a Kamenice
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
Rašeliniště Jizery
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
Rašeliniště Jizerky
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
Rašeliniště Jizery
IUCN Ib
National Nature Reserve
Bukovec
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
Rašeliniště Jizerky
IUCN IV
National Nature Reserve
Bukovec
IUCN IV
Nature Reserve

1 page = 1 named river (aggregation of 5 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

435 distinct species · 1 365 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 25 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 Jizerka : 17 espèces reliées par 47 interactions GloBI sur 6 types (connectance 14.5%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

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)