Saint Mary's Island
IUCN VWildlife Management Area
10 km²
County · USA
Sarpy
United States
DfaCold, no dry season, hot summer(100 %)
Species observed
2 750
Observations
350 805
Area
641km²
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 Sarpy : 28 espèces reliées par 70 interactions GloBI sur 3 types (connectance 11.1%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
36
Interactions affichées
70
Connectance
0.111
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
2 750 distinct species · 350 805 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,8°C
Annual rain
837mm
Warmest m°
30,4°C
Coldest m°
-8,2°C
Elevation: 338 m on average (min 291 m, max 389 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,8°C
Annual rain
837mm
Warmest month
30,4°C
Coldest month
-8,2°C
Mean alt.
338m
Min
291m
Max
389m
Std. dev.
23m
Köppen-Geiger (dominant)
DfaCold, no dry season, hot summer(100 %)Cold
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,6
Org. C
18,9g/kg
Clay
32,6%
Sand
11,0%
Silt
56,5%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: scGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,6
Org. C
26,3g/kg
Clay
32,5%
Sand
11,1%
Silt
56,4%
5–15 cm
pH H₂O
6,6
Org. C
17,2g/kg
Clay
32,4%
Sand
11,0%
Silt
56,6%
15–30 cm
pH H₂O
6,7
Org. C
13,2g/kg
Clay
32,8%
Sand
10,9%
Silt
56,3%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest9.9%
Crops50.5%
Built-up3.0%
Bare soil1.4%
Other (grassland, water…)35.2%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology7 basins · 5 lakes · 21 rivers
Hydrology metrics for this exact territory
Stream length here
152,1km
Lake surface here
1,46km²
Basins crossed
7
Max stream order
8
Max drainage
1 035 348km²
Discharge in basins
587,6m³/s
Mean precip.
780mm/an
Mean T°
10,0°C
Moisture idx
-0,26
Max snow
14%
Mean runoff
186mm/an
Mean elev. (basins)
351m
Watersheds crossing here
- Bassin de Platte Riversub-area600 km²overlap291.59 km²45%
- Bassin de Missouri Riversub-area2 613,2 km²overlap284.04 km²44%
- Bassin de Platte Riversub-area65,1 km²overlap36.05 km²6%
- Bassin de Bell Creeksub-area912,5 km²overlap14.70 km²2%
- Bassin de Platte Riversub-area27,6 km²overlap11.22 km²2%
- Bassin de Platte Riversub-area378,9 km²overlap3.09 km²0%
- Bassin de Missouri Riversub-area2 237 km²overlap0.10 km²0%
Lakes (5, top by area)
Rivers / streams (21, ord ≥ 4)
- Platte Riverord 7len here32.33 km3%total1167 km
- South Papillion Creekord 2len here20.10 km100%total20 km
- Missouri Riverord 8len here18.16 km0%total6197 km
- West Papillion Creekord 3len here12.56 km55%total23 km
- Papillion Creekord 4len here11.14 km100%total11 km
- Elkhorn Riverord 5len here9.41 km1%total704 km
- Turtle Creekord 6len here8.87 km2%total467 km
- Buffalo Creekord 7len here7.55 km1%total1209 km
- Mud Creekord 6len here5.74 km0%total1406 km
- Big Elk Creekord 4len here4.30 km13%total33 km
- Clear Creek Diversion Channelord 7len here4.02 km42%total10 km
- Big Papillion Creekord 3len here3.91 km7%total60 km
9 more river segmentssorted by Strahler order + length
- Mill Creekord 7len here3.50 km0%total1839 km
- Zwiebel Creekord 2len here2.67 km100%total3 km
- Walnut Creekord 5len here1.91 km0%total1018 km
- Westmont Creekord 1len here1.91 km100%total2 km
- Western Sarpy Ditchord 1len here1.45 km100%total1 km
- West Papio Creekord 2len here1.16 km16%total7 km
- Stone Creekord 7len here0.87 km4%total21 km
- Saint Mary's Ditchord 1len here0.50 km30%total2 km
- Cedar Creekord 6len here≈ tangenttotal2026 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
2hab/km²
Night light
12,7nW
Built-up
297,4%
Pesticides
17,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas4
IUCN V · 4
Gifford
IUCN VWildlife Management Area · 1976
6 km²
Wetlands Reserve Program (WRP), Sarpy, NE
IUCN VReserve Program · 2013
1 km²
Louisville Boat Access
IUCN VWildlife Management Area · 1934
0 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN