Brière
IUCN VRegional Nature Park · 1970
566 km²
Commune · FRA
Guérande
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
4 008
Observations
137 021
Area
66,5km²
Ecological tissue
Graphe en cours d’indexation
Calcul du tissu écologique de cette entité.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 2s).
Species present
4 008 distinct species · 137 021 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
12,5°C
Annual rain
791mm
Warmest m°
21,1°C
Coldest m°
4,8°C
Elevation: 24 m on average (min -1 m, max 48 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
12,5°C
Annual rain
791mm
Warmest month
21,1°C
Coldest month
4,8°C
Mean alt.
24m
Min
-1m
Max
48m
Std. dev.
14m
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
6,3
Org. C
51,2g/kg
Clay
27,7%
Sand
35,4%
Silt
36,9%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiMaggregated to Loire-Atlantique
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,3
Org. C
83,6g/kg
Clay
26,9%
Sand
35,2%
Silt
37,8%
5–15 cm
pH H₂O
6,3
Org. C
41,5g/kg
Clay
27,9%
Sand
34,6%
Silt
37,6%
15–30 cm
pH H₂O
6,4
Org. C
28,4g/kg
Clay
28,4%
Sand
36,4%
Silt
35,3%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest22.4%
Crops32.9%
Built-up3.2%
Bare soil0.8%
Other (grassland, water…)40.8%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 2 lakes · 1 rivers
Hydrology metrics for this exact territory
Stream length here
3,9km
Lake surface here
0,13km²
Basins crossed
1
Max stream order
1
Max drainage
1 138km²
Discharge in basins
0,0m³/s
Mean precip.
814mm/an
Mean T°
11,7°C
Moisture idx
0,04
Max snow
5%
Mean runoff
527mm/an
Mean elev. (basins)
16m
Watersheds crossing here
Lakes (2, top by area)
Rivers / streams (1, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
0,7nW
Built-up
316,2%
Pesticides
44,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas12
IUCN Not Reported · 8IUCN IV · 3IUCN V · 1🌊 Marine · 6
Grande Brière, marais de Donges et du Brivet
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2019
198 km²
Grande Briere
IUCN Not ReportedWetland of International Importance (Ramsar Site) · 1995
174 km²
Grande Brière et marais de Donges
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2015
167 km²
Marais salants de Guérande et du Més
IUCN Not ReportedWetland of International Importance (Ramsar Site) · 1995
50 km²
Marais salants de Guérande, traicts du Croisic et dunes de Pen-Bron
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2015
44 km²
Complete list12 protected areas
- BrièreRegional Nature ParkIUCN V1970566 km²
- Grande Brière, marais de Donges et du BrivetSpecial Protection Area (Birds Directive)IUCN Not Reported2019198 km²
- Grande BriereWetland of International Importance (Ramsar Site)IUCN Not Reported1995174 km²
- Grande Brière et marais de DongesSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported2015167 km²
- Marais salants de Guérande et du MésWetland of International Importance (Ramsar Site)IUCN Not Reported199550 km²
- Marais salants de Guérande, traicts du Croisic et dunes de Pen-BronSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201544 km²
- Marais salants de Guérande, traicts du Croisic, dunes de Pen BronSpecial Protection Area (Birds Directive)IUCN Not Reported201836 km²
- Marais du Mès, baie et dunes de Pont-Mahé, étang du Pont de FerSpecial Protection Area (Birds Directive)IUCN Not Reported201827 km²
- Marais du Mès, baie et dunes de Pont-Mahé, étang du Pont de FerSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201627 km²
- Sites abritant le Pleucedan officinal, plante hôte de la Noctuelle des PeucedanBiotope Protection OrderIUCN IV20201 km²
- Bois De VilleneuveBiotope Protection OrderIUCN IV19920 km²
- marais des faillies brieresLand acquired by a regional conservatory of natural areasIUCN IV19000 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.