Ontologia

HydroBASINS lev08 watershed · #2080358040

Bassin de River Vyrnwy

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 5 administrative regions : NA, Powys

5% lakePfafstetter: 23301480

Sub-basin area

895,4km²

Upstream area

895,7km²

Discharge

27,78m³/s

Mean elev.

270m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de River Severn608 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

5 dept-equivalent regions (GADM L2)

30 intersecting protected areas

21 more protected areas

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

Species present

8 552 distinct species · 308 624 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

308 624 obs · 27 cellules
Obs. / cellule
≥ 79 323
20 065–79 322
13 714–20 064
6 180–13 713
< 6 180

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

Ecological tissue

Sample of 29 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 Vyrnwy : 18 espèces reliées par 136 interactions GloBI sur 6 types (connectance 27.4%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
136
Connectance
0.274
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°

8,0°C

Annual rain

1 100mm

Moisture idx (CMI)

0,45

Runoff

964mm/an

PET

584mm

AET

522mm

Mean slope

7,0°

Water table

322cm

Forest

3%

Crops

9%

Urban

1%

Protected

17%

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