National Wildlife Refuge · usa
Great Dismal Swamp
- Area
- 461 km²
- IUCN cat.
- IV
Overview
- Designation
- National Wildlife Refuge
- IUCN category
- IV · Aire d'habitats / espèces
Gestion active pour maintenir habitats / espèces particuliers
0 - Managing authority
- U.S. Fish and Wildlife Service
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
1 648 distinct species · 155 713 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Great Dismal Swamp : 22 espèces reliées par 55 interactions GloBI sur 4 types (connectance 10.4%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology5 basins · 1 lakes · 20 rivers
Hydrology metrics for this exact territory
Stream length here
72,8km
Lake surface here
12,93km²
Basins crossed
5
Max stream order
4
Max drainage
2 487km²
Discharge in basins
5,6m³/s
Mean precip.
1 190mm/an
Mean T°
15,2°C
Moisture idx
0,04
Max snow
2%
Mean runoff
496mm/an
Mean elev. (basins)
13m
Watersheds crossing here
- Bassin de Northwest Riversub-area1 031,5 km²overlap273.85 km²59%
- Bassin de Nansemond Riversub-area2 486,8 km²overlap111.66 km²24%
- Bassin de Pasquotank Riversub-area504,3 km²overlap67.58 km²15%
- Bassin de Bennetts Creeksub-area488,2 km²overlap7.31 km²2%
- Bassin de Perquimans Riversub-area365,7 km²overlap0.31 km²0%
Lakes (1, top by area)
Rivers / streams (20, ord ≥ 4)
- Washington Ditchord 3len here11.18 km96%total12 km
- Camp Ditchord 1len here11.14 km100%total11 km
- Pasquotank Riverord 3len here9.53 km16%total61 km
- Corapeake Ditchord 2len here7.47 km78%total10 km
- Feeder Ditchord 3len here6.37 km64%total10 km
- Jericho Ditchord 1len here4.92 km100%total5 km
- Sycamore Ditchord 3len here4.69 km100%total5 km
- South Ditchord 1len here2.54 km100%total3 km
- Portsmouth Ditchord 1len here1.88 km96%total2 km
- Myrtle Ditchord 4len here1.58 km53%total3 km
- Weyerhaeuser Ditchord 1len here1.52 km14%total11 km
- Entry Ditchord 1len here1.52 km93%total2 km
8 more river segmentssorted by Strahler order + length
- Hudnell Ditchord 1len here1.48 km100%total1 km
- North Ditchord 2len here1.43 km55%total3 km
- Forest Line Ditchord 2len here1.34 km72%total2 km
- Dismal Swamp Canalord 4len here1.28 km11%total12 km
- Baines Creekord 1len here1.07 km9%total12 km
- Tributary Ditchord 2len here0.85 km38%total2 km
- Western Boundary Ditchord 2len here0.59 km101%total1 km
- Bull Boulevard Leg Ditchord 1len here0.44 km5%total9 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
- 36.59648, -76.48950
- 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.