Ontologia

HydroBASINS lev08 watershed · #2080372710

Bassin de Afon Ieithon

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 1 administrative regions : Powys

Pfafstetter: 23301609

Sub-basin area

362,2km²

Upstream area

362,2km²

Discharge

11,1m³/s

Mean elev.

324m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de River Wye26 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

1 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

5 103 distinct species · 118 363 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

118 363 obs · 10 cellules
Obs. / cellule
≥ 26 506
26 506–26 505
13 248–26 505
12 136–13 247
< 12 136

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 Afon Ieithon : 17 espèces reliées par 103 interactions GloBI sur 6 types (connectance 22.2%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
103
Connectance
0.222
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 297mm

Moisture idx (CMI)

0,54

Runoff

974mm/an

PET

588mm

AET

542mm

Mean slope

6,1°

Water table

263cm

Forest

1%

Crops

12%

Urban

1%

Protected

2%

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