Ontologia

HydroBASINS lev08 watershed · #2080048920

Bassin de River Test

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 : NA, West Berkshire

Pfafstetter: 23301108

Sub-basin area

1 227,7km²

Upstream area

1 227,7km²

Discharge

19,48m³/s

Mean elev.

96m

Administrative coverage

4 dept-equivalent regions (GADM L2)

30 intersecting protected areas

  • North Wessex Downs

    IUCN V

    Area of Outstanding Natural Beauty

    255.93 km² overlap

  • New Forest

    IUCN V

    National Park

    111.91 km² overlap

  • The New Forest

    IUCN Not Reported

    Emerald Network

    37.48 km² overlap

  • The New Forest

    IUCN IV

    Site of Special Scientific Interest

    34.92 km² overlap

  • New Forest

    IUCN Not Reported

    Emerald Network

    32.04 km² overlap

  • The New Forest

    IUCN V

    Wetland of International Importance (Ramsar Site)

    31.95 km² overlap

  • Porton Down

    IUCN Not Reported

    Emerald Network

    7.35 km² overlap

  • Salisbury Plain

    IUCN Not Reported

    Emerald Network

    7.35 km² overlap

  • Porton Down

    IUCN IV

    Site of Special Scientific Interest

    7.32 km² overlap

21 more protected areas

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

Species present

11 547 distinct species · 1 525 764 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 525 764 obs · 38 cellules
Obs. / cellule
≥ 146 752
92 920–146 751
45 102–92 919
35 297–45 101
< 35 297

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

Ecological tissue

Sample of 23 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 River Test : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 30 interactions GloBI sur 2 types (connectance 11.9%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
23
Interactions affichées
30
Connectance
0.119
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°

9,8°C

Annual rain

758mm

Moisture idx (CMI)

0,07

Runoff

463mm/an

PET

701mm

AET

526mm

Mean slope

2,4°

Water table

126cm

Forest

3%

Crops

57%

Urban

7%

Protected

33%

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