Clarks River
IUCN IVNational Wildlife Refuge
38 km²
County · USA
McCracken
United States
CfaTemperate, no dry season, hot summer(100 %)
Species observed
2 344
Observations
72 189
Area
691km²
Ecological tissue
Sample of 34 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 McCracken : 24 espèces reliées par 70 interactions GloBI sur 4 types (connectance 11.8%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
35
Interactions affichées
70
Connectance
0.118
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
2 344 distinct species · 72 189 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
14,8°C
Annual rain
1 261mm
Warmest m°
31,6°C
Coldest m°
-1,5°C
Elevation: 114 m on average (min 88 m, max 146 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
14,8°C
Annual rain
1 261mm
Warmest month
31,6°C
Coldest month
-1,5°C
Mean alt.
114m
Min
88m
Max
146m
Std. dev.
14m
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
21,3g/kg
Clay
30,5%
Sand
8,6%
Silt
60,9%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,5
Org. C
40,6g/kg
Clay
30,2%
Sand
8,7%
Silt
61,2%
5–15 cm
pH H₂O
5,5
Org. C
15,1g/kg
Clay
30,0%
Sand
8,7%
Silt
61,4%
15–30 cm
pH H₂O
5,4
Org. C
8,1g/kg
Clay
31,5%
Sand
8,3%
Silt
60,2%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest41.5%
Crops23.4%
Built-up2.0%
Bare soil0.3%
Other (grassland, water…)32.8%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology8 basins · 5 lakes · 10 rivers
Hydrology metrics for this exact territory
Stream length here
164,5km
Lake surface here
0,72km²
Basins crossed
8
Max stream order
8
Max drainage
525 488km²
Discharge in basins
7 427,7m³/s
Mean precip.
1 256mm/an
Mean T°
14,0°C
Moisture idx
0,03
Max snow
2%
Mean runoff
481mm/an
Mean elev. (basins)
125m
Watersheds crossing here
- Bassin de Massac Creeksub-area175,3 km²overlap173.80 km²25%
- Bassin de Ohio Riversub-area455,3 km²overlap165.52 km²24%
- Bassin de Ohio Riversub-area403 km²overlap140.13 km²20%
- Bassin de Clarks Riversub-area1 425,1 km²overlap119.33 km²17%
- Bassin de Mayfield Creeksub-area1 113,6 km²overlap60.22 km²9%
- Bassin de Tennessee Riversub-area937,8 km²overlap18.92 km²3%
- Bassin de Tennessee Riversub-area9 km²overlap7.67 km²1%
- Bassin de Humphrey Creeksub-area210,6 km²overlap5.48 km²1%
Lakes (5, top by area)
Rivers / streams (10, ord ≥ 4)
- Ohio Riverord 9len here61.74 km3%total2174 km
- Clarks Riverord 7len here33.94 km29%total118 km
- Massac Creekord 3len here16.08 km50%total32 km
- Mayfield Creekord 3len here15.28 km10%total149 km
- Tennessee Riverord 8len here14.49 km1%total1510 km
- Perkins Creekord 2len here8.70 km43%total20 km
- Blizzard Ponds Drainage Canalord 1len here5.30 km100%total5 km
- Rocky Branchord 8len here5.05 km11%total46 km
- West Fork Clarks Riverord 3len here3.72 km4%total92 km
- Sevenmile Creekord 4len here0.21 km0%total191 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
4,1nW
Built-up
198,0%
Pesticides
9,3kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas8
IUCN V · 4IUCN Not Assigned · 3IUCN IV · 1
Wetlands Reserve Program (WRP)
IUCN Not AssignedReserve Program · 1999
16 km²
West Kentucky
IUCN VWildlife Management Area · 1957
13 km²
Agricultural Conservation Easement Program - Wetlands Reserve Easement (ACEP-WRE)
IUCN Not AssignedConservation Easement · 2015
5 km²
Wetlands Reserve Program (WRP), Livingston, KY
IUCN VReserve Program · 1996
2 km²
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), McCracken, KY
IUCN Not AssignedConservation Easement
1 km²
Complete list8 protected areas
- Clarks RiverNational Wildlife RefugeIUCN IV38 km²
- Wetlands Reserve Program (WRP)Reserve ProgramIUCN Not Assigned199916 km²
- West KentuckyWildlife Management AreaIUCN V195713 km²
- Agricultural Conservation Easement Program - Wetlands Reserve Easement (ACEP-WRE)Conservation EasementIUCN Not Assigned20155 km²
- Wetlands Reserve Program (WRP), Livingston, KYReserve ProgramIUCN V19962 km²
- Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), McCracken, KYConservation EasementIUCN Not Assigned1 km²
- Metropolis LakeState Nature PreserveIUCN V19840 km²
- Perkins CreekNature PreserveIUCN V20000 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN