Landes De Gascogne
IUCN VRegional Nature Park · 1970
3 613 km²
Subdivision · FRA
Saint-Symphorien
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
1 757
Observations
56 718
Area
322,8km²
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 Saint-Symphorien : 29 espèces + 6 bulles famille, 73 interactions GloBI documentées sur 4 types (connectance 12.3%, filtre Serrano α=0.2). Les 6 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Espèces affichées
35
Interactions affichées
73
Connectance
0.123
Patrimoniales
0
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
1 757 distinct species · 56 718 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
13,7°C
Annual rain
948mm
Warmest m°
27,0°C
Coldest m°
2,8°C
Elevation: 65 m on average (min 31 m, max 83 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
13,7°C
Annual rain
948mm
Warmest month
27,0°C
Coldest month
2,8°C
Mean alt.
65m
Min
31m
Max
83m
Std. dev.
10m
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
5,9
Org. C
35,7g/kg
Clay
18,2%
Sand
59,6%
Silt
22,2%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiMaggregated to Gironde
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,9
Org. C
56,9g/kg
Clay
18,8%
Sand
59,3%
Silt
21,9%
5–15 cm
pH H₂O
6,0
Org. C
28,3g/kg
Clay
16,4%
Sand
61,8%
Silt
21,9%
15–30 cm
pH H₂O
6,0
Org. C
22,0g/kg
Clay
19,5%
Sand
57,5%
Silt
23,0%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest63.3%
Crops10.4%
Built-up0.2%
Bare soil0.4%
Other (grassland, water…)25.6%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology3 basins · 4 lakes · 15 rivers
Hydrology metrics for this exact territory
Stream length here
80,9km
Lake surface here
1,33km²
Basins crossed
3
Max stream order
3
Max drainage
55 371km²
Discharge in basins
21,6m³/s
Mean precip.
964mm/an
Mean T°
12,5°C
Moisture idx
-0,01
Max snow
8%
Mean runoff
426mm/an
Mean elev. (basins)
87m
Watersheds crossing here
Lakes (4, top by area)
Rivers / streams (15, ord ≥ 4)
- Ruisseau de la Hureord 3len here20.30 km83%total25 km
- Ruisseau de la Nèreord 2len here14.10 km100%total14 km
- Ruisseau de Calotord 2len here8.70 km100%total9 km
- Ruisseau de Casteraord 2len here6.20 km35%total18 km
- Ruisseau de Cassehortord 1len here5.43 km100%total5 km
- Le Gat-Mortord 2len here4.24 km28%total15 km
- Ruisseau Blancord 2len here3.74 km100%total4 km
- Ruisseau du Bayleord 1len here3.51 km45%total8 km
- Fossé des Déjuntésord 1len here3.09 km100%total3 km
- Craste de la Mounardeord 1len here2.89 km27%total11 km
- O9641110ord 1len here2.63 km100%total3 km
- Le Baillonord 1len here2.17 km82%total3 km
3 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,2nW
Built-up
23,6%
Pesticides
27,8kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas7
IUCN Not Reported · 6IUCN V · 1🌊 Marine · 1
Vallées de la Grande et de la Petite Leyre
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2015
56 km²
Vallée du Ciron
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2016
34 km²
Réseau hydrographique du Gat Mort et du Saucats
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2017
14 km²
Domaine départemental d'Hostens
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2006
3 km²
Lagunes de Saint-Magne et Louchats
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2016
2 km²
Complete list7 protected areas
- Landes De GascogneRegional Nature ParkIUCN V19703 613 km²
- Vallées de la Grande et de la Petite LeyreSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201556 km²
- Vallée du CironSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201634 km²
- Réseau hydrographique du Gat Mort et du SaucatsSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201714 km²
- Domaine départemental d'HostensSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported20063 km²
- Lagunes de Saint-Magne et LouchatsSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported20162 km²
- Lagunes de Saint-SymphorienSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported20090 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN
Sub-administrations6
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.