Ontologia

HydroBASINS lev08 watershed · #4080587680

Bassin de 小野川

A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.

Crosses 25 administrative regions : Ami, Chikusei, Hokota, Ibaraki, Inashiki +20

108% lakePfafstetter: 41301620

Sub-basin area

1 939,3km²

Upstream area

1 939,7km²

Discharge

38,23m³/s

Mean elev.

41m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 利根川183 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

25 dept-equivalent regions (GADM L2)

17 more

30 intersecting protected areas

  • Suigo-Tsukuba

    IUCN V

    Quasi National Park

    309.32 km² overlap

  • Kasumigaura

    IUCN IV

    Prefectural Wildlife Protection Area

    50.01 km² overlap

  • Aso

    IUCN IV

    Prefectural Wildlife Protection Area

    23.69 km² overlap

  • Uenonuma

    IUCN IV

    Prefectural Wildlife Protection Area

    21.31 km² overlap

  • Agakuni atago

    IUCN V

    Prefectural Natural Park

    15.93 km² overlap

  • Kashima

    IUCN IV

    Prefectural Wildlife Protection Area

    15.19 km² overlap

  • Edosaki

    IUCN IV

    Prefectural Wildlife Protection Area

    14.99 km² overlap

  • Kasama

    IUCN V

    Prefectural Natural Park

    13.29 km² overlap

  • Tsukubasan

    IUCN IV

    Prefectural Wildlife Protection Area

    12.64 km² overlap

21 more protected areas

  • Kakiokahigashi

    IUCN IV

    Prefectural Wildlife Protection Area

    12.13 km² overlap

  • Ushibori chisaki

    IUCN IV

    Prefectural Wildlife Protection Area

    11.14 km² overlap

  • Ayumizaki

    IUCN IV

    Prefectural Wildlife Protection Area

    9.72 km² overlap

  • Ottonuma

    IUCN IV

    Prefectural Wildlife Protection Area

    8.95 km² overlap

  • Kitaura

    IUCN IV

    Prefectural Wildlife Protection Area

    8.31 km² overlap

  • Chuoseinen no ie

    IUCN IV

    Prefectural Wildlife Protection Area

    7.71 km² overlap

  • Hokota

    IUCN IV

    Prefectural Wildlife Protection Area

    6.53 km² overlap

  • Ryujinyama

    IUCN IV

    Prefectural Wildlife Protection Area

    6.39 km² overlap

  • Takahamairi

    IUCN IV

    Prefectural Wildlife Protection Area

    4.97 km² overlap

  • Atagoyama

    IUCN IV

    Prefectural Wildlife Protection Area

    4.31 km² overlap

  • Niihari

    IUCN IV

    Prefectural Wildlife Protection Area

    3.92 km² overlap

  • Ukishima

    IUCN IV

    Prefectural Wildlife Protection Area

    2.81 km² overlap

  • Mizuhara

    IUCN IV

    Prefectural Wildlife Protection Area

    2.73 km² overlap

  • Mashiko

    IUCN V

    Prefectural Natural Park

    2.72 km² overlap

  • Ryugasaki

    IUCN IV

    Prefectural Wildlife Protection Area

    2.15 km² overlap

  • Oguri

    IUCN IV

    Prefectural Wildlife Protection Area

    1.70 km² overlap

  • Takasuzaki

    IUCN IV

    Prefectural Wildlife Protection Area

    1.49 km² overlap

  • Noba

    IUCN IV

    Prefectural Wildlife Protection Area

    1.42 km² overlap

  • Kashiwada

    IUCN IV

    Prefectural Wildlife Protection Area

    1.14 km² overlap

  • Shimone

    IUCN IV

    Prefectural Wildlife Protection Area

    1.04 km² overlap

  • Ushiku shizenkansatsuno mori

    IUCN IV

    Prefectural Wildlife Protection Area

    0.93 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

5 335 distinct species · 74 194 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

74 194 obs · 58 cellules
Obs. / cellule
≥ 9 404
3 579–9 403
921–3 578
566–920
< 566

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 28 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

Indicateurs du tissu écologique

Tissu écologique de Bassin de 小野川 : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 41 interactions GloBI sur 2 types (connectance 8.8%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
41
Connectance
0.088
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

13,9°C

Annual rain

1 367mm

Moisture idx (CMI)

0,27

Runoff

626mm/an

PET

999mm

AET

977mm

Mean slope

2,3°

Water table

80cm

Forest

14%

Crops

39%

Urban

34%

Protected

25%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)