National Wildlife Refuge · usa
St. Marks
- Area
- 340 km²
- IUCN cat.
- IV
Overview
- Designation
- National Wildlife Refuge
- IUCN category
- IV · Aire d'habitats / espèces
Gestion active pour maintenir habitats / espèces particuliers
0 - Managing authority
- U.S. Fish and Wildlife Service ; Non-Governmental Organization
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
1 888 distinct species · 836 905 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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).
Indicateurs du tissu écologique
Tissu écologique de St. Marks : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 46 interactions GloBI sur 2 types (connectance 8.7%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology6 basins · 4 lakes · 5 rivers
Hydrology metrics for this exact territory
Stream length here
9,2km
Lake surface here
2,02km²
Basins crossed
6
Max stream order
5
Max drainage
5 660km²
Discharge in basins
1,6m³/s
Mean precip.
1 487mm/an
Mean T°
19,8°C
Moisture idx
-0,00
Max snow
1%
Mean runoff
462mm/an
Mean elev. (basins)
20m
Watersheds crossing here
- Bassin de Lost Creeksub-area993,5 km²overlap148.65 km²44%
- Bassin de Hosford Branchsub-area285,8 km²overlap140.22 km²41%
- Bassin de Saint Marks Riversub-area2 268,3 km²overlap32.79 km²10%
- Bassin de Aucilla Riversub-area2 505,9 km²overlap11.47 km²3%
- Bassin de Ochlockonee Riversub-area449,1 km²overlap4.67 km²1%
- Bassin de Econfina Riversub-area2 635 km²overlap1.67 km²0%
Lakes (4, top by area)
Rivers / streams (5, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 30.13525, -84.13115
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.