Saint Francis Sunken Lands
IUCN VState Wildlife Management Area
111 km²
County · USA
Poinsett
United States
CfaTemperate, no dry season, hot summer(100 %)
Species observed
1 991
Observations
29 685
Area
1 984,1km²
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 Poinsett : 30 espèces reliées par 105 interactions GloBI sur 4 types (connectance 12.8%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
41
Interactions affichées
105
Connectance
0.128
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
1 991 distinct species · 29 685 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
16,3°C
Annual rain
1 280mm
Warmest m°
32,3°C
Coldest m°
0,0°C
Elevation: 71 m on average (min 58 m, max 117 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
16,3°C
Annual rain
1 280mm
Warmest month
32,3°C
Coldest month
0,0°C
Mean alt.
71m
Min
58m
Max
117m
Std. dev.
9m
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
5,8
Org. C
17,0g/kg
Clay
26,7%
Sand
15,1%
Silt
58,2%
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
30,1g/kg
Clay
26,3%
Sand
15,4%
Silt
58,4%
5–15 cm
pH H₂O
5,9
Org. C
13,0g/kg
Clay
25,8%
Sand
15,5%
Silt
58,7%
15–30 cm
pH H₂O
5,8
Org. C
7,9g/kg
Clay
28,1%
Sand
14,3%
Silt
57,6%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest17.5%
Crops67.5%
Built-up0.2%
Bare soil1.0%
Other (grassland, water…)13.9%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology16 basins · 30 lakes · 17 rivers
Hydrology metrics for this exact territory
Stream length here
291,6km
Lake surface here
12,10km²
Basins crossed
16
Max stream order
5
Max drainage
13 396km²
Discharge in basins
235,9m³/s
Mean precip.
1 248mm/an
Mean T°
15,9°C
Moisture idx
-0,02
Max snow
1%
Mean runoff
628mm/an
Mean elev. (basins)
72m
Watersheds crossing here
- Bassin de l'Anguille Riversub-area2 233,2 km²overlap594.92 km²30%
- Bassin de Big Creeksub-area1 573,1 km²overlap289.10 km²15%
- Bassin de Pemiscot Bayousub-area789,8 km²overlap247.72 km²12%
- Bassin de Little River Floodwaysub-area818,9 km²overlap208.74 km²11%
- Bassin de Ditch Number 10sub-area135,9 km²overlap135.90 km²7%
- Bassin de Tyronza Riversub-area1 434,9 km²overlap114.60 km²6%
- Bassin de Little River Floodwaysub-area155,2 km²overlap108.87 km²5%
- Bassin de Viney Slough Ditchsub-area183 km²overlap88.04 km²4%
- Bassin de Saint Francis Riversub-area687,2 km²overlap61.31 km²3%
7 more basinssorted by overlap
- Bassin de Ditch Number 10sub-area58,5 km²overlap58.51 km²3%
- Bassin de Ditch Number 10sub-area22,4 km²overlap22.38 km²1%
- Bassin de Gum Slough Ditchsub-area430,9 km²overlap21.99 km²1%
- Bassin de Cache Riversub-area1 308,1 km²overlap21.88 km²1%
- Bassin de Little Bay Ditchsub-area162,7 km²overlap9.97 km²1%
- Bassin de Cache Riversub-area320,4 km²overlap0.14 km²0%
- Bassin de Cache Riversub-area187,2 km²overlap0.09 km²0%
Lakes (30, top by area)
- Lake Poinsettarea1,2 km²avg depth29.3 m
- Lake Hoguearea1 km²avg depth1.5 m
- Lac 1060258area0,9 km²avg depth2.4 m
- Lac 1060244area0,9 km²avg depth1.9 m
- Lac 1060292area0,8 km²avg depth1.6 m
- Lac 1060315area0,8 km²avg depth1.9 m
- Lac 1060282area0,7 km²avg depth1.7 m
- Lac 1060224area0,6 km²avg depth1.7 m
- Lac 1060176area0,5 km²avg depth1.5 m
21 more lakes
- Lac 1060193area0,5 km²avg depth1.2 m
- Lac 1060191area0,4 km²avg depth2.1 m
- Lac 1060264area0,4 km²avg depth1.1 m
- Lac 1060187area0,4 km²avg depth1.0 m
- Lac 1060234area0,4 km²avg depth0.7 m
- Lac 1060272area0,3 km²avg depth2.0 m
- Lac 1060307area0,3 km²avg depth0.9 m
- Lac 1060359area0,3 km²avg depth3.5 m
- Lac 1060366area0,2 km²avg depth1.5 m
- Lac 1060316area0,2 km²avg depth1.3 m
- Lac 1060241area0,2 km²avg depth0.9 m
- Lac 1060261area0,2 km²avg depth1.0 m
- Lac 1060192area0,2 km²avg depth0.5 m
- Lac 1060270area0,2 km²avg depth1.3 m
- Lac 1060243area0,2 km²avg depth2.2 m
- Lac 1060262area0,2 km²avg depth1.7 m
- Lac 1060230area0,2 km²avg depth2.0 m
- Lac 1060218area0,2 km²avg depth0.9 m
- Lac 1060206area0,2 km²avg depth1.6 m
- Lac 1060257area0,1 km²avg depth1.0 m
- Lac 1060212area0,1 km²avg depth0.5 m
Rivers / streams (17, ord ≥ 4)
- Saint Francis Riverord 6len here62.33 km8%total830 km
- Ditch Number 10ord 4len here43.38 km85%total51 km
- Pemiscot Bayouord 3len here35.80 km27%total133 km
- Ditch No. 123ord 4len here29.66 km100%total30 km
- Little River Floodwayord 4len here24.66 km30%total81 km
- Tyronza Riverord 4len here21.07 km35%total59 km
- Ditch No. 10ord 4len here19.15 km72%total26 km
- Big Creekord 8len here12.93 km1%total1608 km
- Viney Slough Ditchord 2len here9.56 km49%total20 km
- Ditch No. 59ord 1len here7.30 km100%total7 km
- Ditch No 56ord 2len here6.97 km100%total7 km
- Straight Sloughord 7len here5.69 km17%total33 km
5 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
0,5nW
Built-up
23,3%
Pesticides
16,3kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas14
IUCN V · 9IUCN Not Assigned · 5
Wetlands Reserve Program (WRP), Jackson, AR
IUCN VReserve Program · 1996
25 km²
Earl Buss/bay
IUCN VState Wildlife Management Area
18 km²
Wetlands Reserve Program (WRP), Poinsett, AR
IUCN VReserve Program · 1996
11 km²
Wetlands Reserve Program (WRP), Mississippi, AR
IUCN VReserve Program · 1995
10 km²
Us-Ar-30-1
IUCN Not AssignedConservation Easement · 1998
5 km²
Complete list14 protected areas
- Saint Francis Sunken LandsState Wildlife Management AreaIUCN V111 km²
- Wetlands Reserve Program (WRP), Jackson, ARReserve ProgramIUCN V199625 km²
- Earl Buss/bayState Wildlife Management AreaIUCN V18 km²
- Wetlands Reserve Program (WRP), Poinsett, ARReserve ProgramIUCN V199611 km²
- Wetlands Reserve Program (WRP), Mississippi, ARReserve ProgramIUCN V199510 km²
- Us-Ar-30-1Conservation EasementIUCN Not Assigned19985 km²
- Wetlands Reserve Program (WRP), Craighead, ARReserve ProgramIUCN V19965 km²
- Us-Ar-75-26Conservation EasementIUCN Not Assigned20114 km²
- Us-Ar-75-34Conservation EasementIUCN Not Assigned20122 km²
- Singer ForestNatural AreaIUCN V19732 km²
- US-AR-30-16 Wetlands Reserve Program (WRP) 6671030400CKQReserve ProgramIUCN Not Assigned20041 km²
- White HallState Wildlife Management AreaIUCN V0 km²
- St. Francis Sunken LandsNatural AreaIUCN Not Assigned20090 km²
- Wetlands Reserve Program (WRP), Poinsett, ARReserve ProgramIUCN V19950 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN