Saint Francis Sunken Lands
IUCN VState Wildlife Management Area
111 km²
County · USA
Craighead
United States
CfaTemperate, no dry season, hot summer(100 %)
Species observed
3 337
Observations
150 513
Area
1 847,2km²
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 Craighead : 27 espèces reliées par 94 interactions GloBI sur 4 types (connectance 13.4%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
38
Interactions affichées
94
Connectance
0.134
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
3 337 distinct species · 150 513 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
16,0°C
Annual rain
1 248mm
Warmest m°
32,2°C
Coldest m°
-0,4°C
Elevation: 78 m on average (min 66 m, max 134 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
16,0°C
Annual rain
1 248mm
Warmest month
32,2°C
Coldest month
-0,4°C
Mean alt.
78m
Min
66m
Max
134m
Std. dev.
13m
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
5,9
Org. C
16,7g/kg
Clay
24,4%
Sand
19,1%
Silt
56,5%
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
5,9
Org. C
28,5g/kg
Clay
23,7%
Sand
19,5%
Silt
56,8%
5–15 cm
pH H₂O
5,9
Org. C
12,9g/kg
Clay
22,8%
Sand
19,9%
Silt
57,3%
15–30 cm
pH H₂O
5,8
Org. C
8,5g/kg
Clay
26,8%
Sand
17,7%
Silt
55,5%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest17.2%
Crops62.5%
Built-up0.9%
Bare soil1.0%
Other (grassland, water…)18.4%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology12 basins · 15 lakes · 15 rivers
Hydrology metrics for this exact territory
Stream length here
288,2km
Lake surface here
3,59km²
Basins crossed
12
Max stream order
5
Max drainage
6 500km²
Discharge in basins
141,1m³/s
Mean precip.
1 236mm/an
Mean T°
15,7°C
Moisture idx
-0,03
Max snow
1%
Mean runoff
594mm/an
Mean elev. (basins)
76m
Watersheds crossing here
- Bassin de Saint Francis Riversub-area687,2 km²overlap402.38 km²22%
- Bassin de Big Creeksub-area1 573,1 km²overlap383.14 km²21%
- Bassin de Gum Slough Ditchsub-area430,9 km²overlap305.77 km²17%
- Bassin de Cache Riversub-area320,4 km²overlap252.20 km²14%
- Bassin de Little Bay Ditchsub-area162,7 km²overlap152.78 km²8%
- Bassin de l'Anguille Riversub-area2 233,2 km²overlap111.62 km²6%
- Bassin de Viney Slough Ditchsub-area183 km²overlap95.00 km²5%
- Bassin de Iron Mines Creeksub-area530,2 km²overlap47.34 km²3%
- Bassin de Little River Floodwaysub-area155,2 km²overlap43.20 km²2%
Lakes (15, top by area)
- Lac 1060140area0,7 km²avg depth1.3 m
- Lac 1060133area0,5 km²avg depth1.7 m
- Lac 1060055area0,4 km²avg depth1.2 m
- Lac 1060164area0,4 km²avg depth2.8 m
- Lac 1060099area0,3 km²avg depth3.2 m
- Lac 1060145area0,2 km²avg depth2.3 m
- Lac 1060128area0,2 km²avg depth3.4 m
- Lac 1060031area0,2 km²avg depth2.4 m
- Lac 1060036area0,2 km²avg depth3.2 m
Rivers / streams (15, ord ≥ 4)
- Big Creekord 8len here61.90 km4%total1608 km
- Cache Riverord 4len here49.41 km8%total583 km
- Saint Francis Riverord 6len here45.43 km5%total830 km
- Little Bay Ditchord 2len here37.77 km100%total38 km
- Gum Slough Ditchord 2len here32.86 km100%total33 km
- Kinnemore Sloughord 1len here16.23 km57%total29 km
- Viney Slough Ditchord 2len here9.93 km51%total20 km
- Ditch Number 10ord 4len here7.89 km15%total51 km
- Ditch No. 10ord 4len here7.32 km28%total26 km
- Higginbottom Creekord 1len here6.18 km100%total6 km
- Whiteman Creekord 1len here6.01 km100%total6 km
- Iron Mines Creekord 2len here4.83 km7%total71 km
3 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
2,6nW
Built-up
87,9%
Pesticides
16,7kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas6
IUCN V · 2IUCN Not Assigned · 2IUCN IV · 1IUCN III · 1
Wetlands Reserve Program (WRP), Craighead, AR
IUCN VReserve Program · 1996
5 km²
Us-Ar-75-26
IUCN Not AssignedConservation Easement · 2011
4 km²
Farm Service Agency Interest Of Ar
IUCN IVNational Wildlife Refuge
3 km²
Us-Ar-30-9
IUCN Not AssignedConservation Easement · 2003
1 km²
Arkansas Game And Fish Commission - Forrest L. Wood/crowley's Ridge
IUCN IIINature Center
0 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN