Ontologia

HydroBASINS lev08 watershed · #4080557200

Bassin de 那珂川

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 4 administrative regions : Nakagawa, Nasu, Nasushiobara, Otawara

Pfafstetter: 41301587

Sub-basin area

201,8km²

Upstream area

778km²

Discharge

19,22m³/s

Mean elev.

285m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 那珂川369 km²

▲ Receives from 2 basins

4 dept-equivalent regions (GADM L2)

7 intersecting protected areas

  • Yamizo

    IUCN V

    Prefectural Natural Park

    23.75 km² overlap

  • Kurobane

    IUCN IV

    Prefectural Wildlife Protection Area

    2.39 km² overlap

  • Handa

    IUCN IV

    Prefectural Wildlife Protection Area

    1.14 km² overlap

  • Nasujinja

    IUCN IV

    Prefectural Wildlife Protection Area

    0.30 km² overlap

  • Toda choseichi

    IUCN IV

    Prefectural Wildlife Protection Area

    0.26 km² overlap

  • Nasu sports park

    IUCN IV

    Prefectural Wildlife Protection Area

    0.15 km² overlap

  • Unganji

    IUCN IV

    Prefectural Wildlife Protection Area

    0.05 km² overlap

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

Species present

987 distinct species · 3 304 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 304 obs · 6 cellules
Obs. / cellule
≥ 2 070
2 070–2 069
761–2 069
201–760
< 201

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

Ecological tissue

Sample of 30 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 那珂川 : 26 espèces reliées par 45 interactions GloBI sur 4 types (connectance 9.1%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
45
Connectance
0.091
Patrimoniales
0
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°

11,9°C

Annual rain

1 432mm

Moisture idx (CMI)

0,32

Runoff

741mm/an

PET

977mm

AET

964mm

Mean slope

4,2°

Water table

143cm

Forest

31%

Crops

39%

Urban

14%

Protected

13%

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