Ontologia

County · USA

Holt

United States

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

Species observed

1 321

Observations

258 852

Area

1 207,1km²

Ecological tissue

Sample of 34 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 Holt : 29 espèces reliées par 60 interactions GloBI sur 3 types (connectance 10.1%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
60
Connectance
0.101
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

1 321 distinct species · 258 852 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

258 852 obs · 29 cellules
Obs. / cellule
≥ 214 208
8 483–214 207
951–8 482
462–950
< 462

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

Climate

Mean T°

11,8°C

Annual rain

931mm

Warmest m°

30,6°C

Coldest m°

-6,8°C

Elevation: 286 m on average (min 251 m, max 339 m)

Bioclimatic detailsExpert
Annual mean temp.
11,8°C
Annual rain
931mm
Warmest month
30,6°C
Coldest month
-6,8°C
Mean alt.
286m
Min
251m
Max
339m
Std. dev.
24m
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

6,7

Org. C

17,9g/kg

Clay

32,8%

Sand

7,6%

Silt

59,6%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,7
Org. C
25,5g/kg
Clay
32,7%
Sand
7,7%
Silt
59,6%
5–15 cm
pH H₂O
6,7
Org. C
16,2g/kg
Clay
32,6%
Sand
7,6%
Silt
59,8%
15–30 cm
pH H₂O
6,7
Org. C
12,1g/kg
Clay
33,2%
Sand
7,5%
Silt
59,4%

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

Land cover

Forest12.5%
Crops70.2%
Built-up0.1%
Bare soil0.4%
Other (grassland, water…)16.8%

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

Hydrology5 basins · 5 lakes · 16 rivers

Hydrology metrics for this exact territory

Stream length here

200,8km

Lake surface here

7,46km²

Basins crossed

5

Max stream order

8

Max drainage

1 054 642km²

Discharge in basins

1 497,9m³/s

Mean precip.

888mm/an

Mean T°

11,1°C

Moisture idx

-0,21

Max snow

12%

Mean runoff

222mm/an

Mean elev. (basins)

304m

Watersheds crossing here

Lakes (5, top by area)

Rivers / streams (16, ord ≥ 4)

4 more river segments

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

Human pressure

Pop. density

0hab/km²

Night light

0,2nW

Built-up

15,4%

Pesticides

9,3kg/km²

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

Protected areas17

IUCN V · 14IUCN IV · 2IUCN III · 1
Complete list

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