Ontologia

Commune · FRA

Marsan

France

CfaTemperate, no dry season, hot summer(79 %)

Species observed

1 265

Observations

5 485

Area

15,2km²

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 Marsan : 29 espèces + 5 bulles famille, 83 interactions GloBI documentées sur 5 types (connectance 14.8%, filtre Serrano α=0.2). Les 5 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
34
Interactions affichées
83
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

1 265 distinct species · 5 485 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

5 485 obs · 1 cellules
Obs. / cellule
≥ 5 485
5 485–5 484
5 485–5 484
5 485–5 484
< 5 485

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

Climate

Mean T°

13,3°C

Annual rain

738mm

Warmest m°

26,4°C

Coldest m°

2,0°C

Elevation: 205 m on average (min 181 m, max 218 m)

Bioclimatic detailsExpert
Annual mean temp.
13,3°C
Annual rain
738mm
Warmest month
26,4°C
Coldest month
2,0°C
Mean alt.
205m
Min
181m
Max
218m
Std. dev.
11m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, hot summer(79 %)Temperate

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

Soil & lithology

pH H₂O

7,3

Org. C

36,6g/kg

Clay

32,1%

Sand

20,0%

Silt

47,9%

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

Dominant lithology: suGLiMaggregated to Gers

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,2
Org. C
71,4g/kg
Clay
31,6%
Sand
19,8%
Silt
48,6%
5–15 cm
pH H₂O
7,3
Org. C
21,1g/kg
Clay
31,6%
Sand
19,3%
Silt
49,1%
15–30 cm
pH H₂O
7,3
Org. C
17,2g/kg
Clay
33,1%
Sand
20,9%
Silt
46,0%

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

Land cover

Forest6.5%
Crops72.7%
Built-up0.6%
Bare soil2.1%
Other (grassland, water…)18.1%

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

Hydrology2 basins · 1 lakes · 0 rivers

Hydrology metrics for this exact territory

Lake surface here

0,05km²

Basins crossed

2

Max drainage

1 239km²

Discharge in basins

0,1m³/s

Mean precip.

761mm/an

Mean T°

12,3°C

Moisture idx

-0,22

Max snow

1%

Mean runoff

249mm/an

Mean elev. (basins)

187m

Watersheds crossing here

Lakes (1, top by area)

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

Human pressure

Pop. density

0hab/km²

Night light

0,2nW

Built-up

55,1%

Pesticides

46,2kg/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.