Ontologia

County · USA

Calvert

United States

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

Species observed

4 240

Observations

613 437

Area

560,7km²

Ecological tissue

Sample of 39 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 Calvert : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 75 interactions GloBI sur 4 types (connectance 9.6%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
75
Connectance
0.096
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

4 240 distinct species · 613 437 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

613 437 obs · 14 cellules
Obs. / cellule
≥ 238 212
97 480–238 211
40 114–97 479
27 504–40 113
< 27 504

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

Climate

Mean T°

14,1°C

Annual rain

1 170mm

Warmest m°

28,9°C

Coldest m°

-0,4°C

Elevation: 24 m on average (min -15 m, max 47 m)

Bioclimatic detailsExpert
Annual mean temp.
14,1°C
Annual rain
1 170mm
Warmest month
28,9°C
Coldest month
-0,4°C
Mean alt.
24m
Min
-15m
Max
47m
Std. dev.
11m
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

4,8

Org. C

39,7g/kg

Clay

21,1%

Sand

44,2%

Silt

34,8%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
4,8
Org. C
84,9g/kg
Clay
20,4%
Sand
44,2%
Silt
35,3%
5–15 cm
pH H₂O
4,9
Org. C
22,6g/kg
Clay
20,5%
Sand
44,8%
Silt
34,8%
15–30 cm
pH H₂O
4,9
Org. C
11,6g/kg
Clay
22,3%
Sand
43,5%
Silt
34,2%

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

Land cover

Forest69.0%
Crops4.4%
Built-up1.7%
Bare soil0.2%
Other (grassland, water…)24.6%

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

Hydrology2 basins · 2 lakes · 11 rivers

Hydrology metrics for this exact territory

Stream length here

50,4km

Lake surface here

0,35km²

Basins crossed

2

Max stream order

4

Max drainage

1 675km²

Discharge in basins

3,0m³/s

Mean precip.

1 078mm/an

Mean T°

13,2°C

Moisture idx

-0,02

Max snow

4%

Mean runoff

505mm/an

Mean elev. (basins)

36m

Watersheds crossing here

Lakes (2, top by area)

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

Human pressure

Pop. density

1hab/km²

Night light

2,4nW

Built-up

174,3%

Pesticides

19,6kg/km²

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

Protected areas25

IUCN Not Assigned · 15IUCN V · 8IUCN III · 2🌊 Marine · 6

Hall Creek

IUCN V

Natural Resource Management Area · 2006

1 km²

Complete list

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