Ontologia

County · USA

Polk

United States

CfaTemperate, no dry season, hot summer(100 %)

Species observed

7 634

Observations

1 588 370

Area

5 213,7km²

Ecological tissue

Sample of 42 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 Polk : 31 espèces reliées par 85 interactions GloBI sur 3 types (connectance 9.9%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
42
Interactions affichées
85
Connectance
0.099
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

7 634 distinct species · 1 588 370 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 588 370 obs · 156 cellules
Obs. / cellule
≥ 180 923
20 234–180 922
7 647–20 233
2 581–7 646
< 2 581

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

22,2°C

Annual rain

1 339mm

Warmest m°

31,7°C

Coldest m°

11,4°C

Elevation: 36 m on average (min 14 m, max 75 m)

Bioclimatic detailsExpert
Annual mean temp.
22,2°C
Annual rain
1 339mm
Warmest month
31,7°C
Coldest month
11,4°C
Mean alt.
36m
Min
14m
Max
75m
Std. dev.
10m
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

5,4

Org. C

35,9g/kg

Clay

3,6%

Sand

91,6%

Silt

4,9%

Average over 0-30 cm. Per-depth details in expert panel.

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,4
Org. C
47,1g/kg
Clay
3,7%
Sand
91,1%
Silt
5,2%
5–15 cm
pH H₂O
5,4
Org. C
38,9g/kg
Clay
3,5%
Sand
91,6%
Silt
4,8%
15–30 cm
pH H₂O
5,4
Org. C
21,6g/kg
Clay
3,5%
Sand
91,9%
Silt
4,6%

SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)

Land cover

Forest28.1%
Crops6.1%
Built-up2.1%
Bare soil0.7%
Other (grassland, water…)63.1%

Copernicus Global Land Cover 100m (Buchhorn et al. 2020)

Hydrology17 basins · 50 lakes · 27 rivers

Hydrology metrics for this exact territory

Stream length here

347,7km

Lake surface here

250,33km²

Basins crossed

17

Max stream order

5

Max drainage

5 448km²

Discharge in basins

75,1m³/s

Mean precip.

1 249mm/an

Mean T°

22,3°C

Moisture idx

-0,21

Mean runoff

376mm/an

Mean elev. (basins)

36m

Watersheds crossing here

8 more basins

Lakes (50, top by area)

41 more lakes

Rivers / streams (27, ord ≥ 4)

15 more river segments

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

1hab/km²

Night light

4,2nW

Built-up

206,1%

Pesticides

30,8kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)

Protected areas64

IUCN V · 33IUCN Not Assigned · 29IUCN IV · 2

Disney

IUCN V

Wilderness Preserve · 1992

48 km²

Complete list

+ 4 protected areas (top 60 shown)

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN