Marais Du Cotentin Et Du Bessin
IUCN VRegional Nature Park · 1991
1 475 km²
Commune · FRA
Marchésieux
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
610
Observations
3 063
Area
19,7km²
Ecological tissue
Sample of 35 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 Marchésieux : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 64 interactions GloBI sur 4 types (connectance 10.8%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
35
Interactions affichées
64
Connectance
0.108
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
610 distinct species · 3 063 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
11,6°C
Annual rain
893mm
Warmest m°
21,2°C
Coldest m°
3,6°C
Elevation: 10 m on average (min 1 m, max 28 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
11,6°C
Annual rain
893mm
Warmest month
21,2°C
Coldest month
3,6°C
Mean alt.
10m
Min
1m
Max
28m
Std. dev.
5m
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
6,0
Org. C
46,6g/kg
Clay
22,6%
Sand
21,0%
Silt
56,4%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiMaggregated to Manche
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,9
Org. C
67,4g/kg
Clay
21,7%
Sand
21,4%
Silt
57,0%
5–15 cm
pH H₂O
6,1
Org. C
40,8g/kg
Clay
23,1%
Sand
20,0%
Silt
56,8%
15–30 cm
pH H₂O
6,1
Org. C
31,7g/kg
Clay
22,9%
Sand
21,7%
Silt
55,5%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest8.2%
Crops49.6%
Built-up0.8%
Bare soil0.3%
Other (grassland, water…)41.2%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 0 lakes · 5 rivers
Hydrology metrics for this exact territory
Stream length here
11,5km
Basins crossed
1
Max stream order
3
Max drainage
1 450km²
Discharge in basins
0,4m³/s
Mean precip.
836mm/an
Mean T°
11,4°C
Moisture idx
0,19
Max snow
7%
Mean runoff
698mm/an
Mean elev. (basins)
41m
Watersheds crossing here
Rivers / streams (5, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Built-up
76,3%
Pesticides
29,1kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas5
IUCN Not Reported · 4IUCN V · 1🌊 Marine · 5
Marais du Cotentin et du Bessin, Baie des Veys
IUCN Not ReportedWetland of International Importance (Ramsar Site) · 1991
389 km²
Basses Vallées du Cotentin et Baie des Veys
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2006
337 km²
Marais du Cotentin et du Bessin - Baie des Veys
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2022
329 km²
Marais du Cotentin et du Bessin - Baie des Veys
IUCN Not ReportedMarine Protected Area (OSPAR) · 2012
287 km²
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.