Brière
IUCN VRegional Nature Park · 1970
566 km²
Commune · FRA
Mesquer
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
2 485
Observations
40 243
Area
17km²
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
2 485 distinct species · 40 243 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
12,5°C
Annual rain
801mm
Warmest m°
21,3°C
Coldest m°
4,7°C
Elevation: 12 m on average (min -0 m, max 28 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
12,5°C
Annual rain
801mm
Warmest month
21,3°C
Coldest month
4,7°C
Mean alt.
12m
Min
-0m
Max
28m
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
Forest29.7%
Crops22.0%
Built-up2.8%
Bare soil1.3%
Other (grassland, water…)44.2%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 3 lakes · 1 rivers
Hydrology metrics for this exact territory
Stream length here
0,0km
Lake surface here
0,70km²
Basins crossed
1
Max stream order
2
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 (3, 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
0,3nW
Built-up
277,2%
Pesticides
43,3kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas6
IUCN Not Reported · 4IUCN V · 1IUCN IV · 1🌊 Marine · 5
Mor Braz
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2008
403 km²
Marais salants de Guérande et du Més
IUCN Not ReportedWetland of International Importance (Ramsar Site) · 1995
50 km²
Marais du Mès, baie et dunes de Pont-Mahé, étang du Pont de Fer
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2018
27 km²
Marais du Mès, baie et dunes de Pont-Mahé, étang du Pont de Fer
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2016
27 km²
Bassin du mes - marais du rostu
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy) · 1997
1 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.