Marais et tourbières des vallées de la Somme et de l’Avre
IUCN IVWetland of International Importance (Ramsar Site) · 2017
131 km²
Commune · FRA
Longueau
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
1 876
Observations
23 227
Area
3,5km²
Ecological tissue
Sample of 40 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 Longueau : 32 espèces dont 4 patrimoniales (LR IUCN CR/EN/VU) reliées par 114 interactions GloBI sur 5 types (connectance 13.2%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
42
Interactions affichées
114
Connectance
0.132
Patrimoniales
4
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
1 876 distinct species · 23 227 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,7°C
Annual rain
698mm
Warmest m°
22,4°C
Coldest m°
1,1°C
Elevation: 36 m on average (min 27 m, max 51 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,7°C
Annual rain
698mm
Warmest month
22,4°C
Coldest month
1,1°C
Mean alt.
36m
Min
27m
Max
51m
Std. dev.
7m
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)
Land cover
Forest6.5%
Crops8.5%
Built-up9.8%
Bare soil0.8%
Other (grassland, water…)74.4%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology3 basins · 0 lakes · 1 rivers
Hydrology metrics for this exact territory
Stream length here
0,6km
Basins crossed
3
Max stream order
4
Max drainage
3 775km²
Discharge in basins
0,3m³/s
Mean precip.
657mm/an
Mean T°
10,0°C
Moisture idx
-0,13
Max snow
7%
Mean runoff
422mm/an
Mean elev. (basins)
94m
Watersheds crossing here
Rivers / streams (1, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
9hab/km²
Night light
23,3nW
Built-up
976,2%
Pesticides
46,5kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas3
IUCN Not Reported · 2IUCN IV · 1
Étangs et marais du bassin de la Somme
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2007
52 km²
Marais de la moyenne Somme entre Amiens et Corbie
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2008
5 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.