Nassau River - St. Johns River Marshes Aquatic Preserve
IUCN IVMarine Protected Area · 1969
285 km²
County · USA
Nassau
United States
CfaTemperate, no dry season, hot summer(100 %)
Species observed
3 662
Observations
301 117
Area
1 741,7km²
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 Nassau : 26 espèces reliées par 63 interactions GloBI sur 3 types (connectance 9.5%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
37
Interactions affichées
63
Connectance
0.095
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
3 662 distinct species · 301 117 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
19,9°C
Annual rain
1 389mm
Warmest m°
32,1°C
Coldest m°
7,9°C
Elevation: 11 m on average (min -10 m, max 29 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
19,9°C
Annual rain
1 389mm
Warmest month
32,1°C
Coldest month
7,9°C
Mean alt.
11m
Min
-10m
Max
29m
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
4,8
Org. C
34,8g/kg
Clay
8,0%
Sand
82,0%
Silt
10,0%
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
4,7
Org. C
58,6g/kg
Clay
8,2%
Sand
81,7%
Silt
10,1%
5–15 cm
pH H₂O
4,8
Org. C
26,1g/kg
Clay
8,0%
Sand
82,1%
Silt
10,0%
15–30 cm
pH H₂O
4,9
Org. C
19,5g/kg
Clay
7,9%
Sand
82,2%
Silt
10,0%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest63.8%
Crops1.2%
Built-up0.9%
Bare soil0.3%
Other (grassland, water…)33.8%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology8 basins · 2 lakes · 10 rivers
Hydrology metrics for this exact territory
Stream length here
261,9km
Lake surface here
0,43km²
Basins crossed
8
Max stream order
4
Max drainage
3 300km²
Discharge in basins
44,9m³/s
Mean precip.
1 307mm/an
Mean T°
20,1°C
Moisture idx
-0,10
Max snow
1%
Mean runoff
319mm/an
Mean elev. (basins)
16m
Watersheds crossing here
- Bassin de Thomas Creeksub-area876,2 km²overlap600.89 km²34%
- Bassin de Saint Marys Riversub-area952,7 km²overlap408.31 km²23%
- Bassin de Saint Marys Riversub-area309 km²overlap308.70 km²18%
- Bassin de Bells Riversub-area187,2 km²overlap178.50 km²10%
- Bassin de Saint Marys Riversub-area310,4 km²overlap147.10 km²8%
- Bassin de Saint Marys Riversub-area221,5 km²overlap97.00 km²6%
- Bassin de Saint Marys Riversub-area186,6 km²overlap0.01 km²0%
- Bassin de Fort George Riversub-area63,7 km²overlap0.00 km²0%
Lakes (2, top by area)
Rivers / streams (10, ord ≥ 4)
- Saint Marys Riverord 4len here134.75 km42%total323 km
- Nassau Riverord 4len here35.25 km65%total54 km
- Thomas Creekord 3len here25.89 km44%total59 km
- Cushing Creekord 1len here24.72 km100%total25 km
- Mills Creekord 2len here16.07 km100%total16 km
- Plummer Creekord 3len here11.63 km100%total12 km
- Bells Riverord 1len here8.75 km100%total9 km
- Kingsleys Cutord 1len here4.45 km100%total4 km
- Dark Entry Creekord 1len here0.35 km8%total5 km
- Pumpkin Hill Creekord 1len here0.02 km0%total9 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
1,2nW
Built-up
86,5%
Pesticides
1,2kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas15
IUCN V · 9IUCN IV · 4IUCN III · 1IUCN Not Assigned · 1🌊 Marine · 8
Timucuan Ecological & Historic Preserve
IUCN VMarine Protected Area · 1988
185 km²
Timucuan Ecological and Historic
IUCN VPreserve · 1988
67 km²
Fort Clinch State Park Aquati State Park
IUCN IVMarine Protected Area · 1970
30 km²
Longleaf
IUCN VMitigation Bank
12 km²
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Camden, GA
IUCN VConservation Easement
12 km²
Complete list15 protected areas
- Nassau River - St. Johns River Marshes Aquatic PreserveMarine Protected AreaIUCN IV1969285 km²
- Timucuan Ecological & Historic PreserveMarine Protected AreaIUCN V1988185 km²
- Timucuan Ecological and HistoricPreserveIUCN V198867 km²
- Fort Clinch State Park Aquati State ParkMarine Protected AreaIUCN IV197030 km²
- LongleafMitigation BankIUCN V12 km²
- Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Camden, GAConservation EasementIUCN V12 km²
- Fort ClinchState ParkIUCN III19359 km²
- Fort Clinch State ParkMarine Protected AreaIUCN IV19356 km²
- St Marys River MegasiteEasementIUCN V19975 km²
- St Marys River RanchConservation EasementIUCN V20105 km²
- Northeast FloridaWetland Mitigation BankIUCN V3 km²
- Thomas CreekMitigation BankIUCN V2 km²
- Atlantic Coast Conservancy/Pelican Coast Conservancy Conservation Easement E201601AConservation EasementIUCN Not Assigned20162 km²
- Amelia Island State ParkMarine Protected AreaIUCN IV19831 km²
- Froitzheim WildernessWildernessIUCN V0 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN