Red River
IUCN IVNational Wildlife Refuge
61 km²
Parish · USA
Caddo
United States
CfaTemperate, no dry season, hot summer(100 %)
Species observed
3 055
Observations
442 216
Area
2 438,7km²
Ecological tissue
Sample of 36 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 Caddo : 27 espèces reliées par 73 interactions GloBI sur 3 types (connectance 11.6%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
36
Interactions affichées
73
Connectance
0.116
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
3 055 distinct species · 442 216 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
18,6°C
Annual rain
1 353mm
Warmest m°
33,9°C
Coldest m°
4,3°C
Elevation: 67 m on average (min 42 m, max 112 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
18,6°C
Annual rain
1 353mm
Warmest month
33,9°C
Coldest month
4,3°C
Mean alt.
67m
Min
42m
Max
112m
Std. dev.
15m
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
5,5
Org. C
17,3g/kg
Clay
27,4%
Sand
28,2%
Silt
44,4%
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
5,5
Org. C
33,4g/kg
Clay
26,2%
Sand
28,8%
Silt
44,9%
5–15 cm
pH H₂O
5,5
Org. C
12,0g/kg
Clay
26,6%
Sand
28,7%
Silt
44,7%
15–30 cm
pH H₂O
5,5
Org. C
6,3g/kg
Clay
29,3%
Sand
27,0%
Silt
43,7%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest61.1%
Crops9.9%
Built-up1.6%
Bare soil0.4%
Other (grassland, water…)27.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology10 basins · 27 lakes · 18 rivers
Hydrology metrics for this exact territory
Stream length here
348,6km
Lake surface here
84,02km²
Basins crossed
10
Max stream order
6
Max drainage
156 823km²
Discharge in basins
764,0m³/s
Mean precip.
1 232mm/an
Mean T°
18,0°C
Moisture idx
-0,13
Max snow
1%
Mean runoff
402mm/an
Mean elev. (basins)
76m
Watersheds crossing here
- Bassin de Bayou Pierresub-area2 756,7 km²overlap702.26 km²29%
- Bassin de Twelvemile Bayousub-area832,2 km²overlap596.23 km²24%
- Bassin de Black Bayousub-area1 034,5 km²overlap494.37 km²20%
- Bassin de Red Riversub-area592,7 km²overlap182.26 km²7%
- Bassin de Frazier Creeksub-area1 028,5 km²overlap154.29 km²6%
- Bassin de Red Riversub-area242,4 km²overlap95.05 km²4%
- Bassin de Big Cypress Bayousub-area78,4 km²overlap78.36 km²3%
- Bassin de Sabine Riversub-area561,6 km²overlap66.34 km²3%
- Bassin de Haggerty Creeksub-area752 km²overlap56.01 km²2%
1 more basinssorted by overlap
Lakes (27, top by area)
- Caddo Lakearea60,3 km²avg depth15.4 m
- Cross Lakearea26,2 km²avg depth10.1 m
- Black Lakearea7,2 km²avg depth8.0 m
- Lake #13572area2,1 km²avg depth3.6 m
- Dutch Johns Lakearea1,2 km²avg depth1.9 m
- Lake #13562area1,2 km²avg depth2.4 m
- Gold Point Lakearea1 km²avg depth1.5 m
- Lac 1064138area0,9 km²avg depth2.3 m
- Lac 1064086area0,7 km²avg depth2.4 m
18 more lakes
- Lac 1064262area0,6 km²avg depth1.5 m
- Lac 1064208area0,5 km²avg depth3.0 m
- Lac 1064239area0,5 km²avg depth2.9 m
- Lac 1063408area0,5 km²avg depth1.3 m
- Lac 1064229area0,4 km²avg depth3.1 m
- Lac 1063421area0,3 km²avg depth2.4 m
- Lac 1064047area0,3 km²avg depth2.7 m
- Lac 1064179area0,3 km²avg depth2.9 m
- Lac 1063462area0,2 km²avg depth2.1 m
- Lac 1064057area0,2 km²avg depth3.3 m
- Lac 1064053area0,2 km²avg depth2.1 m
- Lac 1064041area0,2 km²avg depth1.4 m
- Lac 1064245area0,2 km²avg depth2.2 m
- Lac 1064034area0,1 km²avg depth1.9 m
- Lac 1063964area0,1 km²avg depth2.0 m
- Lac 1063977area0,1 km²avg depth2.1 m
- Lac 1064097area0,1 km²avg depth2.0 m
- Lac 1063758area0,1 km²avg depth3.3 m
Rivers / streams (18, ord ≥ 4)
- Black Bayouord 3len here80.90 km72%total112 km
- Red Riverord 7len here48.03 km2%total2600 km
- Bayou Pierreord 6len here45.24 km12%total383 km
- Twelvemile Bayouord 5len here37.22 km100%total37 km
- Big Cypress Bayouord 5len here22.42 km26%total85 km
- The Tail Raceord 1len here16.73 km100%total17 km
- Brush Bayouord 3len here15.04 km58%total26 km
- Paw Paw Bayouord 3len here13.08 km56%total23 km
- Logan Bayouord 1len here12.69 km100%total13 km
- Cross Bayouord 6len here11.87 km45%total26 km
- Wallace Bayouord 4len here10.97 km52%total21 km
- Red Bayouord 6len here10.61 km30%total36 km
6 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
4,0nW
Built-up
161,4%
Pesticides
13,8kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas3
IUCN V · 2IUCN IV · 1
Wetlands Reserve Program (WRP), Caddo, LA
IUCN VReserve Program · 1995
4 km²
Caddo Black Bayou Fee
IUCN VPrivate Conservation Land · 1998
3 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN