Accotink Stream Valley
IUCN IIIPark
3 km²
County · USA
Fairfax City
United States
CfaTemperate, no dry season, hot summer(100 %)
Species observed
3 008
Observations
189 403
Area
15,9km²
Ecological tissue
Sample of 38 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 Fairfax City : 28 espèces reliées par 87 interactions GloBI sur 4 types (connectance 11.7%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
39
Interactions affichées
87
Connectance
0.117
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
3 008 distinct species · 189 403 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
13,5°C
Annual rain
1 136mm
Warmest m°
30,5°C
Coldest m°
-2,5°C
Elevation: 119 m on average (min 101 m, max 133 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
13,5°C
Annual rain
1 136mm
Warmest month
30,5°C
Coldest month
-2,5°C
Mean alt.
119m
Min
101m
Max
133m
Std. dev.
11m
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
5,3
Clay
21,7%
Sand
35,0%
Silt
43,3%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: mtGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,2
Clay
20,1%
Sand
35,8%
Silt
44,1%
5–15 cm
pH H₂O
5,3
Clay
21,4%
Sand
35,0%
Silt
43,6%
15–30 cm
pH H₂O
5,3
Clay
23,5%
Sand
34,2%
Silt
42,3%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest19.2%
Crops1.4%
Built-up12.2%
Bare soil0.2%
Other (grassland, water…)67.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology3 basins · 0 lakes · 1 rivers
Hydrology metrics for this exact territory
Stream length here
2,4km
Basins crossed
3
Max stream order
1
Max drainage
30 317km²
Discharge in basins
0,1m³/s
Mean precip.
1 013mm/an
Mean T°
12,9°C
Moisture idx
-0,10
Max snow
3%
Mean runoff
436mm/an
Mean elev. (basins)
72m
Watersheds crossing here
Rivers / streams (1, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
11hab/km²
Night light
34,9nW
Built-up
1 219,2%
Pesticides
0,3kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN III · 1
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN