Ontologia

Commune · FRA

Marennes

France

CfaTemperate, no dry season, hot summer(68 %)

Species observed

725

Observations

4 876

Area

12,6km²

Ecological tissue

Sample of 29 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 Marennes : 22 espèces + 7 bulles famille, 60 interactions GloBI documentées sur 4 types (connectance 14.8%, filtre Serrano α=0.2). Les 7 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
29
Interactions affichées
60
Connectance
0.148
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

725 distinct species · 4 876 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 967 obs · 8 cellules · 1795–2026
Obs. / cellule
≥ 2 290
2 290–2 289
599–2 289
246–598
< 246

Source : GBIF — observations agrégées par hexagones 0.02° × 0.02° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

12,3°C

Annual rain

872mm

Warmest m°

26,1°C

Coldest m°

-0,4°C

Elevation: 231 m on average (min 186 m, max 306 m)

Bioclimatic detailsExpert
Annual mean temp.
12,3°C
Annual rain
872mm
Warmest month
26,1°C
Coldest month
-0,4°C
Mean alt.
231m
Min
186m
Max
306m
Std. dev.
46m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, hot summer(68 %)Temperate

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

Soil & lithology

pH H₂O

6,5

Org. C

27,0g/kg

Clay

22,9%

Sand

30,7%

Silt

46,4%

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

Dominant lithology: mtGLiMaggregated to Rhône

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,4
Org. C
44,9g/kg
Clay
22,5%
Sand
30,5%
Silt
46,9%
5–15 cm
pH H₂O
6,5
Org. C
19,9g/kg
Clay
21,6%
Sand
29,5%
Silt
48,8%
15–30 cm
pH H₂O
6,5
Org. C
16,1g/kg
Clay
24,5%
Sand
32,0%
Silt
43,5%

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

Land cover

Forest21.6%
Crops50.0%
Built-up2.1%
Bare soil0.9%
Other (grassland, water…)25.3%

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

Hydrology2 basins · 0 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

3,8km

Basins crossed

2

Max stream order

2

Max drainage

51 669km²

Discharge in basins

22,8m³/s

Mean precip.

803mm/an

Mean T°

10,9°C

Moisture idx

-0,11

Max snow

4%

Mean runoff

367mm/an

Mean elev. (basins)

317m

Watersheds crossing here

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

Human pressure

Pop. density

1hab/km²

Night light

4,6nW

Built-up

212,9%

Pesticides

46,7kg/km²

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

France-specific data (Phase 2)

ZNIEFF, Natura 2000, INPN protected spaces, BNV-D pesticides, Naïades water quality, SAFRAN fine climate, BRGM lithology — Layer FR to load in Phase 2.