Barthes de l'Adour
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2019
156 km²
Commune · FRA
Saint-Martin-de-Seignanx
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
1 194
Observations
18 591
Area
46km²
Ecological tissue
Sample of 39 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-Martin-de-Seignanx : 25 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 107 interactions GloBI sur 6 types (connectance 14.4%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
39
Interactions affichées
107
Connectance
0.144
Patrimoniales
3
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
1 194 distinct species · 18 591 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
14,5°C
Annual rain
1 456mm
Warmest m°
24,1°C
Coldest m°
5,5°C
Elevation: 27 m on average (min 2 m, max 51 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
14,5°C
Annual rain
1 456mm
Warmest month
24,1°C
Coldest month
5,5°C
Mean alt.
27m
Min
2m
Max
51m
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
5,5
Org. C
43,1g/kg
Clay
23,1%
Sand
38,9%
Silt
38,0%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiMaggregated to Landes
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,4
Org. C
76,7g/kg
Clay
22,4%
Sand
38,5%
Silt
39,2%
5–15 cm
pH H₂O
5,5
Org. C
33,1g/kg
Clay
22,6%
Sand
39,3%
Silt
38,0%
15–30 cm
pH H₂O
5,5
Org. C
19,5g/kg
Clay
24,2%
Sand
38,9%
Silt
36,9%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest41.0%
Crops25.8%
Built-up1.6%
Bare soil0.8%
Other (grassland, water…)30.9%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 3 lakes · 6 rivers
Hydrology metrics for this exact territory
Stream length here
11,8km
Lake surface here
0,69km²
Basins crossed
2
Max stream order
6
Max drainage
15 788km²
Discharge in basins
6,6m³/s
Mean precip.
1 234mm/an
Mean T°
13,2°C
Moisture idx
0,26
Max snow
8%
Mean runoff
848mm/an
Mean elev. (basins)
93m
Watersheds crossing here
Lakes (3, top by area)
Rivers / streams (6, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
1,2nW
Built-up
158,2%
Pesticides
43,8kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas11
IUCN Not Reported · 6IUCN IV · 5🌊 Marine · 3
Barthes de l'Adour
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2021
122 km²
L'Adour
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2021
36 km²
Marais d\'orx
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy) · 1992
10 km²
Zones humides associées au marais d'Orx
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2015
10 km²
Marais d'Orx et zones humides associées
IUCN Not ReportedWetland of International Importance (Ramsar Site) · 2011
10 km²
Complete list11 protected areas
- Barthes de l'AdourSpecial Protection Area (Birds Directive)IUCN Not Reported2019156 km²
- Barthes de l'AdourSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported2021122 km²
- L'AdourSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported202136 km²
- Marais d\'orxLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)IUCN IV199210 km²
- Zones humides associées au marais d'OrxSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201510 km²
- Marais d'Orx et zones humides associéesWetland of International Importance (Ramsar Site)IUCN Not Reported201110 km²
- Marais D\'OrxNational Nature ReserveIUCN IV19958 km²
- Domaine d'OrxSpecial Protection Area (Birds Directive)IUCN Not Reported20198 km²
- Barthe De Saint Martin De SeignanxBiotope Protection OrderIUCN IV19914 km²
- Lac d\'yrieuxLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)IUCN IV19930 km²
- Eglise de Saint-Martin-de-Seignanx et son parc arboréBiotope Protection OrderIUCN IV20220 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.