Ontologia

County · USA

Merced

United States

BSkArid, steppe, cold(42 %)

Species observed

3 385

Observations

739 457

Area

5 098,6km²

Ecological tissue

Sample of 27 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 Merced : 16 espèces reliées par 79 interactions GloBI sur 3 types (connectance 20.9%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
28
Interactions affichées
79
Connectance
0.209
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

3 385 distinct species · 739 457 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

739 457 obs · 129 cellules
Obs. / cellule
≥ 81 266
10 877–81 265
1 433–10 876
708–1 432
< 708

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

Climate

Mean T°

17,2°C

Annual rain

356mm

Warmest m°

35,0°C

Coldest m°

4,3°C

Elevation: 118 m on average (min 18 m, max 937 m)

Bioclimatic detailsExpert
Annual mean temp.
17,2°C
Annual rain
356mm
Warmest month
35,0°C
Coldest month
4,3°C
Mean alt.
118m
Min
18m
Max
937m
Std. dev.
156m
Köppen-Geiger (dominant)
BSkArid, steppe, cold(42 %)Arid

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

7,2

Org. C

20,3g/kg

Clay

29,5%

Sand

29,9%

Silt

40,7%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,1
Org. C
33,4g/kg
Clay
29,7%
Sand
30,0%
Silt
40,3%
5–15 cm
pH H₂O
7,2
Org. C
16,3g/kg
Clay
29,0%
Sand
29,9%
Silt
41,1%
15–30 cm
pH H₂O
7,3
Org. C
11,3g/kg
Clay
29,7%
Sand
29,7%
Silt
40,6%

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

Land cover

Forest8.2%
Crops44.7%
Built-up0.7%
Bare soil6.0%
Other (grassland, water…)40.4%

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

Hydrology16 basins · 50 lakes · 58 rivers

Hydrology metrics for this exact territory

Stream length here

1 133,1km

Lake surface here

117,00km²

Basins crossed

16

Max stream order

5

Max drainage

33 305km²

Discharge in basins

465,3m³/s

Mean precip.

361mm/an

Mean T°

15,9°C

Moisture idx

-0,75

Max snow

4%

Mean runoff

126mm/an

Mean elev. (basins)

215m

Watersheds crossing here

7 more basins

Lakes (50, top by area)

41 more lakes

Rivers / streams (58, ord ≥ 4)

46 more river segments

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

Human pressure

Pop. density

0hab/km²

Night light

1,4nW

Built-up

71,8%

Pesticides

44,4kg/km²

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

Protected areas43

IUCN V · 28IUCN Not Assigned · 13IUCN IV · 2📍 Point sites · 1

San Luis

IUCN IV

National Wildlife Refuge · 1966

72 km²

Complete list

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