Ruisseau· 2 segments

Orika oja

Crosses 5 administrative regions : Paistu, Pärsti, Saarepeedi, Viiratsi, Viljandi

ruisseau

Total length

14km

Max discharge

0,6m³/s

Max Strahler

Segments matched

River geography5 admin regions · 0 communes

Parent watershed

hybas-2080258140756 km²

5 administrative regions crossed (GADM L2)

Viljandi
Viljandi · Estonia
5.1 km
in this dpt
Paistu
Viljandi · Estonia
4.3 km
in this dpt
Viiratsi
Viljandi · Estonia
2.8 km
in this dpt
Pärsti
Viljandi · Estonia
0.2 km
in this dpt
Saarepeedi
Viljandi · Estonia
0.0 km
in this dpt

16 intersecting protected areas

Loodi looduspark
IUCN Not Assigned
Protected landscape (nature park)
Loodi LP, Loodi pv.
IUCN V
Limited management zone of protected landscape
Viljandi maastikukaitseala
IUCN Not Assigned
Protected landscape (nature park)
Viljandi MKA, Viljandi pv.
IUCN V
Limited management zone of protected landscape
Loodi LP, Polli mägede skv.
IUCN V
Managed conservation zone of protected landscape
Viljandi
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
Viljandi MKA, Lossipargi pv.
IUCN V
Limited management zone of protected landscape
VEP nr.L01410
IUCN Not Assigned
Woodland key habitat
VEP nr.123235
IUCN Not Assigned
Woodland key habitat

7 more protected areassorted by area

VEP nr.207767
IUCN Not Assigned
Woodland key habitat
VEP nr.151017
IUCN Not Assigned
Woodland key habitat
VEP nr.151037
IUCN Not Assigned
Woodland key habitat
VEP nr.000755
IUCN Not Assigned
Woodland key habitat
VEP nr.000809
IUCN Not Assigned
Woodland key habitat
Viiratsi tammed
IUCN III
Protected nature monument
Oru tänava tammed
IUCN III
Protected nature monument

1 page = 1 named river (aggregation of 2 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

2 226 distinct species · 17 894 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 47 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 Orika oja : 39 espèces reliées par 71 interactions GloBI sur 4 types (connectance 6.6%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.066

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)