Estuaire De La Gironde Et Mer Des Pertuis
IUCN VMarine Nature Park · 2015
6 535 km²
Subdivision · FRA
Marennes
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
3 426
Observations
352 719
Area
189,6km²
Ecological tissue
Sample of 33 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 : 27 espèces dont 5 patrimoniales (LR IUCN CR/EN/VU) reliées par 71 interactions GloBI sur 2 types (connectance 13.4%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
33
Interactions affichées
71
Connectance
0.135
Patrimoniales
5
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
3 426 distinct species · 352 719 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
13,4°C
Annual rain
821mm
Warmest m°
25,1°C
Coldest m°
3,8°C
Elevation: 4 m on average (min -2 m, max 28 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
13,4°C
Annual rain
821mm
Warmest month
25,1°C
Coldest month
3,8°C
Mean alt.
4m
Min
-2m
Max
28m
Std. dev.
4m
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
6,9
Org. C
42,8g/kg
Clay
34,4%
Sand
25,9%
Silt
39,7%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiMaggregated to Charente-Maritime
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,8
Org. C
68,3g/kg
Clay
33,5%
Sand
26,2%
Silt
40,2%
5–15 cm
pH H₂O
6,9
Org. C
31,8g/kg
Clay
35,4%
Sand
24,5%
Silt
40,1%
15–30 cm
pH H₂O
6,9
Org. C
28,3g/kg
Clay
34,3%
Sand
26,8%
Silt
38,9%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest12.8%
Crops32.1%
Built-up1.1%
Bare soil1.7%
Other (grassland, water…)52.3%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 0 lakes · 9 rivers
Hydrology metrics for this exact territory
Stream length here
43,0km
Basins crossed
1
Max stream order
3
Max drainage
2 220km²
Discharge in basins
0,1m³/s
Mean precip.
870mm/an
Mean T°
12,6°C
Moisture idx
-0,01
Max snow
4%
Mean runoff
529mm/an
Mean elev. (basins)
23m
Watersheds crossing here
Rivers / streams (9, ord ≥ 4)
- Le Mérardord 2len here6.95 km58%total12 km
- Chenal de Tirançonord 2len here6.94 km100%total7 km
- Chenal de Brouageord 2len here6.75 km84%total8 km
- Chenal du Port des Moinesord 2len here6.30 km100%total6 km
- La Seudreord 3len here5.19 km8%total69 km
- Chenal de Mérignacord 1len here4.41 km97%total5 km
- Canal de Grand-Peineord 1len here2.92 km41%total7 km
- Chenal de Mornacord 3len here2.68 km49%total5 km
- La Gorceord 1len here0.85 km100%total1 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
0,3nW
Built-up
113,7%
Pesticides
41,0kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas18
IUCN IV · 11IUCN Not Reported · 6IUCN V · 1🌊 Marine · 6
Marais de Brouage (et marais nord d'Oléron)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2009
261 km²
Marais de Brouage-Oléron
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2019
261 km²
Marais et estuaire de la Seudre, île d'Oléron
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2019
140 km²
Marais de la Seudre
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2006
140 km²
Marais de brouage
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy) · 2022
16 km²
Complete list18 protected areas
- Estuaire De La Gironde Et Mer Des PertuisMarine Nature ParkIUCN V20156 535 km²
- Marais de Brouage (et marais nord d'Oléron)Special Areas of Conservation (Habitats Directive)IUCN Not Reported2009261 km²
- Marais de Brouage-OléronSpecial Protection Area (Birds Directive)IUCN Not Reported2019261 km²
- Marais et estuaire de la Seudre, île d'OléronSpecial Protection Area (Birds Directive)IUCN Not Reported2019140 km²
- Marais de la SeudreSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported2006140 km²
- Marais de brouageLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)IUCN IV202216 km²
- Landes de CadeuilSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported20066 km²
- marais de broueLand acquired by a regional conservatory of natural areasIUCN IV19702 km²
- Estuaire de la seudreLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)IUCN IV20012 km²
- La pointe de l\'eguilleLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)IUCN IV20211 km²
- La MassonneRegional Nature ReserveIUCN IV20121 km²
- Tour de broueLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)IUCN IV20131 km²
- marais de la seudreLand acquired by a regional conservatory of natural areasIUCN IV19961 km²
- Carrière de l'EnferSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported20160 km²
- landes de cadeuilLand acquired by a regional conservatory of natural areasIUCN IV19700 km²
- mc bay wa saintonge energieLand acquired by a regional conservatory of natural areasIUCN IV20240 km²
- Carrière De L\'EnferBiotope Protection OrderIUCN IV20000 km²
- carriere de l\'enferLand acquired by a regional conservatory of natural areasIUCN IV19700 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN
Sub-administrations4
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.