Ontologia

Commune · FRA

Marans

France

CfbTemperate, no dry season, warm summer(100 %)

Species observed

1 942

Observations

80 569

Area

84,1km²

Ecological tissue

Sample of 36 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 Marans : 24 espèces reliées par 89 interactions GloBI sur 5 types (connectance 12.7%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
89
Connectance
0.127
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

1 942 distinct species · 80 569 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

80 569 obs · 8 cellules
Obs. / cellule
≥ 23 806
23 806–23 805
11 940–23 805
6 515–11 939
< 6 515

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

Climate

Mean T°

12,8°C

Annual rain

802mm

Warmest m°

24,3°C

Coldest m°

3,3°C

Elevation: 2 m on average (min 1 m, max 7 m)

Bioclimatic detailsExpert
Annual mean temp.
12,8°C
Annual rain
802mm
Warmest month
24,3°C
Coldest month
3,3°C
Mean alt.
2m
Min
1m
Max
7m
Std. dev.
1m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(100 %)Temperate

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

35,0g/kg

Clay

41,7%

Sand

11,8%

Silt

46,6%

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

Dominant lithology: suGLiMaggregated to Charente-Maritime

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,1
Org. C
59,9g/kg
Clay
41,4%
Sand
11,2%
Silt
47,3%
5–15 cm
pH H₂O
7,2
Org. C
21,9g/kg
Clay
42,3%
Sand
10,6%
Silt
47,1%
15–30 cm
pH H₂O
7,2
Org. C
23,3g/kg
Clay
41,3%
Sand
13,4%
Silt
45,3%

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

Land cover

Forest2.4%
Crops70.1%
Built-up1.0%
Bare soil0.3%
Other (grassland, water…)26.2%

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

Hydrology4 basins · 0 lakes · 6 rivers

Hydrology metrics for this exact territory

Stream length here

21,1km

Basins crossed

4

Max stream order

4

Max drainage

3 420km²

Discharge in basins

12,2m³/s

Mean precip.

760mm/an

Mean T°

12,4°C

Moisture idx

-0,08

Max snow

4%

Mean runoff

521mm/an

Mean elev. (basins)

16m

Watersheds crossing here

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

Human pressure

Pop. density

0hab/km²

Night light

0,3nW

Built-up

99,3%

Pesticides

42,5kg/km²

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

Protected areas7

IUCN Not Reported · 3IUCN IV · 2IUCN V · 1IUCN III · 1🌊 Marine · 5

Marais poitevin

IUCN III

Wetland of International Importance (Ramsar Site) · 2023

690 km²

Marais poitevin

IUCN Not Reported

Special Protection Area (Birds Directive) · 2019

682 km²

Marais Poitevin

IUCN Not Reported

Special Areas of Conservation (Habitats Directive) · 2014

479 km²

Marais Poitevin

IUCN Not Reported

Special Areas of Conservation (Habitats Directive) · 2007

203 km²

Complete list

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

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.