Cat Island
IUCN IVNational Wildlife Refuge · 2000
44 km²
Parish · USA
West Feliciana
United States
CfaTemperate, no dry season, hot summer(100 %)
Species observed
3 652
Observations
66 818
Area
1 110,6km²
Ecological tissue
Sample of 35 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 West Feliciana : 23 espèces reliées par 67 interactions GloBI sur 4 types (connectance 10.6%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
36
Interactions affichées
67
Connectance
0.106
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
3 652 distinct species · 66 818 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
19,3°C
Annual rain
1 555mm
Warmest m°
32,5°C
Coldest m°
6,2°C
Elevation: 41 m on average (min 1 m, max 99 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
19,3°C
Annual rain
1 555mm
Warmest month
32,5°C
Coldest month
6,2°C
Mean alt.
41m
Min
1m
Max
99m
Std. dev.
26m
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
27,2g/kg
Clay
29,5%
Sand
20,8%
Silt
49,7%
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
5,8
Org. C
55,5g/kg
Clay
27,9%
Sand
21,5%
Silt
50,6%
5–15 cm
pH H₂O
5,9
Org. C
17,0g/kg
Clay
28,6%
Sand
21,3%
Silt
50,1%
15–30 cm
pH H₂O
5,9
Org. C
9,0g/kg
Clay
31,9%
Sand
19,6%
Silt
48,4%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest70.2%
Crops3.9%
Built-up0.2%
Bare soil0.3%
Other (grassland, water…)25.5%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology8 basins · 16 lakes · 11 rivers
Hydrology metrics for this exact territory
Stream length here
221,6km
Lake surface here
14,71km²
Basins crossed
8
Max stream order
9
Max drainage
3 175 450km²
Discharge in basins
37 700,0m³/s
Mean precip.
1 555mm/an
Mean T°
18,9°C
Moisture idx
0,08
Mean runoff
668mm/an
Mean elev. (basins)
54m
Watersheds crossing here
- Bassin de Thompson Creeksub-area719 km²overlap286.26 km²26%
- Bassin de Little Bayou Sarasub-area464,2 km²overlap272.27 km²25%
- Bassin de Mississippi Riversub-area360 km²overlap252.38 km²23%
- Bassin de Mississippi Riversub-area196,6 km²overlap142.94 km²13%
- Bassin de Mississippi Riversub-area208,5 km²overlap64.90 km²6%
- Bassin de Mississippi Riversub-area175,8 km²overlap50.70 km²5%
- Bassin de Red Riversub-area430,6 km²overlap31.87 km²3%
- Bassin de Buffalo Riversub-area2 020,9 km²overlap9.23 km²1%
Lakes (16, top by area)
- Monday Lakearea18 km²avg depth7.3 m
- Harrison Lakearea1,7 km²avg depth3.3 m
- Lake #13836area1,7 km²avg depth3.6 m
- Lake Killarneyarea1,6 km²avg depth1.7 m
- Lac 1065333area0,7 km²avg depth3.4 m
- Lac 1065297area0,6 km²avg depth4.5 m
- Lac 1065213area0,5 km²avg depth4.0 m
- Lac 1065359area0,5 km²avg depth3.2 m
- Lac 1065445area0,4 km²avg depth3.5 m
Rivers / streams (11, ord ≥ 4)
- Mississippi Riverord 9len here55.19 km1%total5243 km
- Little Bayou Saraord 3len here37.27 km83%total45 km
- Thompson Creekord 9len here35.60 km16%total221 km
- West Fork Thompson Creekord 4len here23.92 km95%total25 km
- Middle Fork Thompson Creekord 3len here20.58 km83%total25 km
- Tunica Bayouord 9len here11.81 km89%total13 km
- Bayou Saraord 3len here11.33 km97%total12 km
- Polly Creekord 1len here8.42 km100%total8 km
- Red Riverord 7len here6.63 km0%total2600 km
- Lower Old Riverord 1len here5.98 km94%total6 km
- Hunter Creekord 9len here4.84 km8%total57 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,7nW
Built-up
21,4%
Pesticides
12,3kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas7
IUCN V · 5IUCN IV · 1IUCN Not Assigned · 1
Wetlands Reserve Program (WRP), West Feliciana, LA
IUCN VReserve Program · 2012
4 km²
Us-La-108-3
IUCN Not AssignedConservation Easement · 2007
3 km²
Cat Island
IUCN VPrivate Conservation Land · 2007
1 km²
Hammer Creek Woods
IUCN VEasement · 1996
1 km²
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), West Feliciana, LA
IUCN VConservation Easement
1 km²
Complete list7 protected areas
- Cat IslandNational Wildlife RefugeIUCN IV200044 km²
- Wetlands Reserve Program (WRP), West Feliciana, LAReserve ProgramIUCN V20124 km²
- Us-La-108-3Conservation EasementIUCN Not Assigned20073 km²
- Cat IslandPrivate Conservation LandIUCN V20071 km²
- Hammer Creek WoodsEasementIUCN V19961 km²
- Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), West Feliciana, LAConservation EasementIUCN V1 km²
- Hammer Creek Woods FeePrivate Conservation LandIUCN V19930 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN