Roanoke River
IUCN IVNational Wildlife Refuge · 1989
86 km²
County · USA
Bertie
United States
CfaTemperate, no dry season, hot summer(100 %)
Species observed
1 238
Observations
24 858
Area
1 825,6km²
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).
RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique
Indicateurs du tissu écologique
Tissu écologique de Bertie : 31 espèces reliées par 88 interactions GloBI sur 4 types (connectance 11.3%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
40
Interactions affichées
88
Connectance
0.113
Patrimoniales
0
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
1 238 distinct species · 24 858 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
16,1°C
Annual rain
1 254mm
Warmest m°
30,8°C
Coldest m°
1,8°C
Elevation: 13 m on average (min -6 m, max 29 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
16,1°C
Annual rain
1 254mm
Warmest month
30,8°C
Coldest month
1,8°C
Mean alt.
13m
Min
-6m
Max
29m
Std. dev.
6m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, hot summer(100 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
4,9
Org. C
41,0g/kg
Clay
16,7%
Sand
53,5%
Silt
29,8%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
4,8
Org. C
80,1g/kg
Clay
15,3%
Sand
54,4%
Silt
30,3%
5–15 cm
pH H₂O
4,9
Org. C
28,7g/kg
Clay
15,4%
Sand
54,6%
Silt
30,0%
15–30 cm
pH H₂O
4,9
Org. C
14,4g/kg
Clay
19,5%
Sand
51,5%
Silt
28,9%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest65.6%
Crops13.1%
Built-up0.3%
Bare soil0.2%
Other (grassland, water…)20.8%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology7 basins · 2 lakes · 34 rivers
Hydrology metrics for this exact territory
Stream length here
404,6km
Lake surface here
0,30km²
Basins crossed
7
Max stream order
6
Max drainage
24 471km²
Discharge in basins
158,6m³/s
Mean precip.
1 206mm/an
Mean T°
15,2°C
Moisture idx
-0,05
Max snow
2%
Mean runoff
457mm/an
Mean elev. (basins)
27m
Watersheds crossing here
- Bassin de Cashie Riversub-area1 069,2 km²overlap1034.79 km²57%
- Bassin de Roanoke Riversub-area2 971,3 km²overlap334.18 km²18%
- Bassin de Ahoskie Creeksub-area767,8 km²overlap332.40 km²18%
- Bassin de Roanoke Riversub-area448,2 km²overlap121.43 km²7%
- Bassin de Roanoke Riversub-area24,7 km²overlap2.76 km²0%
- Bassin de Kendrick Creeksub-area342,2 km²overlap0.01 km²0%
- Bassin de Conoho Creeksub-area292 km²overlap0.01 km²0%
Lakes (2, top by area)
Rivers / streams (34, ord ≥ 4)
- Roanoke Riverord 6len here85.78 km17%total498 km
- Cashie Riverord 3len here57.33 km100%total57 km
- Hoggard Mill Creekord 3len here25.18 km100%total25 km
- Choowatic Creekord 2len here24.44 km100%total24 km
- Cucklemaker Creekord 2len here22.49 km100%total22 km
- Indian Creekord 1len here20.57 km100%total21 km
- Salmon Creekord 2len here15.48 km98%total16 km
- Roquist Creekord 1len here13.93 km100%total14 km
- Connaritsa Swampord 1len here12.11 km100%total12 km
- Beaverdam Swampord 2len here11.34 km47%total24 km
- Barbeque Swampord 2len here9.77 km67%total15 km
- Sutton Creekord 1len here9.20 km100%total9 km
22 more river segmentssorted by Strahler order + length
- Eastmost Swampord 1len here9.07 km100%total9 km
- Chinkapin Swampord 2len here8.64 km79%total11 km
- Cypress Swampord 2len here7.63 km19%total40 km
- Loosing Swampord 3len here6.84 km100%total7 km
- Wildcat Swampord 1len here5.71 km39%total15 km
- Wading Place Creekord 1len here5.54 km100%total6 km
- Cashoke Creekord 1len here5.46 km100%total5 km
- Fort Branchord 1len here5.29 km50%total11 km
- Kehukee Swampord 6len here5.26 km25%total21 km
- Eastmost Swampord 1len here5.04 km100%total5 km
- Flat Swamp Creekord 1len here4.71 km100%total5 km
- Middle Riverord 6len here4.44 km34%total13 km
- Ahoskie Creekord 3len here4.34 km6%total74 km
- Coniott Creekord 1len here4.00 km100%total4 km
- Wahtom Swampord 1len here3.65 km100%total4 km
- Whiteoak Swampord 1len here2.81 km100%total3 km
- Canal Gutord 1len here2.59 km100%total3 km
- Cricket Swampord 1len here2.28 km100%total2 km
- Sandy Runord 3len here2.13 km21%total10 km
- Sweetwater Creekord 6len here0.81 km6%total13 km
- Cooper Swampord 2len here0.71 km17%total4 km
- Conaby Creekord 2len here≈ tangenttotal9 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,4nW
Built-up
25,5%
Pesticides
22,3kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas7
IUCN V · 6IUCN IV · 1🌊 Marine · 1
Roanoke River - Tnc/Gp Partnership
IUCN VPrivate Conservation Land · 2003
25 km²
Roanoke River Bottomlands Megasite
IUCN VConservation Easement · 2008
18 km²
Roanoke River Bottomlands Megasite
IUCN VEasement · 2007
12 km²
Wetlands Reserve Program (WRP), Bertie, NC
IUCN VReserve Program · 2010
3 km²
Salmon Creek-Nichols Farm
IUCN VEnvironmental System · 2007
0 km²
Complete list7 protected areas
- Roanoke RiverNational Wildlife RefugeIUCN IV198986 km²
- Roanoke River - Tnc/Gp PartnershipPrivate Conservation LandIUCN V200325 km²
- Roanoke River Bottomlands MegasiteConservation EasementIUCN V200818 km²
- Roanoke River Bottomlands MegasiteEasementIUCN V200712 km²
- Wetlands Reserve Program (WRP), Bertie, NCReserve ProgramIUCN V20103 km²
- Salmon Creek-Nichols FarmEnvironmental SystemIUCN V20070 km²
- Roanoke River Wetlands GWetlandsIUCN V0 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN