Ontologia

HydroBASINS lev08 watershed · #2080050050

Bassin de Afon Rheidol

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 2 administrative regions : Ceredigion, Powys

Coastal basin 2% lakePfafstetter: 23301755

Sub-basin area

1 013,6km²

Upstream area

1 013,6km²

Discharge

0,22m³/s

Mean elev.

211m

Administrative coverage

2 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

11 292 distinct species · 598 362 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

598 362 obs · 30 cellules
Obs. / cellule
≥ 100 243
50 100–100 242
20 389–50 099
11 680–20 388
< 11 680

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

Ecological tissue

Sample of 31 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 Rheidol : 24 espèces reliées par 60 interactions GloBI sur 5 types (connectance 12.9%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
60
Connectance
0.129
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°

8,7°C

Annual rain

1 274mm

Moisture idx (CMI)

0,54

Runoff

1 206mm/an

PET

564mm

AET

527mm

Mean slope

6,5°

Water table

278cm

Forest

15%

Crops

9%

Urban

1%

Protected

10%

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