Marine Conservation Zone · gbr
Blackwater, Crouch, Roach and Colne Estuaries
- Area
- 284 km²
- IUCN cat.
- IV
- Year
- 2013
Overview
- Designation
- Marine Conservation Zone
- IUCN category
- IV · Aire d'habitats / espèces
Gestion active pour maintenir habitats / espèces particuliers
- Established
- 2013
- Managing authority
- Not Reported
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
4 076 distinct species · 169 221 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Blackwater, Crouch, Roach and Colne Estuaries : 34 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 77 interactions GloBI sur 4 types (connectance 9.9%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology3 basins · 1 lakes · 17 rivers
Hydrology metrics for this exact territory
Stream length here
24,5km
Lake surface here
0,00km²
Basins crossed
3
Max stream order
3
Max drainage
991km²
Discharge in basins
0,2m³/s
Mean precip.
554mm/an
Mean T°
9,9°C
Moisture idx
-0,18
Max snow
8%
Mean runoff
289mm/an
Mean elev. (basins)
24m
Watersheds crossing here
Lakes (1, top by area)
Rivers / streams (17, ord ≥ 4)
- River Roachord 2len here7.79 km45%total17 km
- River Crouchord 2len here7.79 km22%total35 km
- Little Ditchord 1len here2.77 km64%total4 km
- Strood Channelord 1len here1.59 km69%total2 km
- Brightlingsea Creekord 2len here1.19 km17%total7 km
- River Colneord 3len here1.13 km2%total56 km
- Elmstead Brookord 1len here0.93 km11%total9 km
- Roman Riverord 2len here0.31 km1%total21 km
- River Blackwaterord 3len here0.21 km1%total17 km
- Asheldham Brookord 1len here0.17 km2%total9 km
- Pyefleet Channelord 1len here0.17 km23%total1 km
- Bentley Brookord 1len here0.16 km5%total3 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
- 51.72481, 1.05005
- 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.