Site of Special Scientific Interest · gbr
River Usk (Upper Usk) / Afon Wysg (Wysg Uchaf)
- Area
- 3 km²
- IUCN cat.
- IV
- Year
- 1997
Overview
- Designation
- Site of Special Scientific Interest
- IUCN category
- IV · Aire d'habitats / espèces
Gestion active pour maintenir habitats / espèces particuliers
- Established
- 1997
- Managing authority
- Not Reported
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
1 882 distinct species · 15 367 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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).
Indicateurs du tissu écologique
Tissu écologique de River Usk (Upper Usk) / Afon Wysg (Wysg Uchaf) : 31 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 50 interactions GloBI sur 5 types (connectance 7.9%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology1 basins · 0 lakes · 12 rivers
Hydrology metrics for this exact territory
Stream length here
6,7km
Basins crossed
1
Max stream order
3
Max drainage
1 316km²
Discharge in basins
0,1m³/s
Mean precip.
1 196mm/an
Mean T°
8,7°C
Moisture idx
0,46
Max snow
11%
Mean runoff
891mm/an
Mean elev. (basins)
258m
Watersheds crossing here
Rivers / streams (12, ord ≥ 4)
- River Uskord 4len here4.17 km4%total96 km
- Caerfanellord 3len here0.99 km6%total15 km
- Afon Hydferord 1len here0.27 km6%total4 km
- Rhiangollord 3len here0.23 km3%total8 km
- Cwm Nantord 3len here0.20 km7%total3 km
- Grwyne Fawrord 3len here0.19 km3%total6 km
- Nant Carord 3len here0.17 km13%total1 km
- Nant Henwenord 1len here0.16 km2%total7 km
- Cwm-Shenkin Brookord 1len here0.14 km6%total2 km
- Nant Brânord 3len here0.09 km1%total10 km
- Nant y Llaethdyord 1len here0.07 km1%total7 km
- Monmouthshire & Brecon Canalord 3len here0.00 km0%total1 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 51.91037, -3.29581
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.