Barthes de l'Adour
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2019
156 km²
Subdivision · FRA
Dax-Nord
France
CfbTemperate, no dry season, warm summer(79 %)
Species observed
3 336
Observations
82 378
Area
243,6km²
Ecological tissue
Sample of 45 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 Dax-Nord : 29 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 139 interactions GloBI sur 6 types (connectance 13.4%, filtre Serrano α=0.2). 17 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
46
Interactions affichées
139
Connectance
0.134
Patrimoniales
2
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
3 336 distinct species · 82 378 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
14,2°C
Annual rain
1 234mm
Warmest m°
25,8°C
Coldest m°
4,0°C
Elevation: 40 m on average (min 3 m, max 83 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
14,2°C
Annual rain
1 234mm
Warmest month
25,8°C
Coldest month
4,0°C
Mean alt.
40m
Min
3m
Max
83m
Std. dev.
22m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(79 %)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
46,6g/kg
Clay
19,0%
Sand
43,4%
Silt
37,7%
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
76,4g/kg
Clay
18,7%
Sand
44,0%
Silt
37,3%
5–15 cm
pH H₂O
5,5
Org. C
38,4g/kg
Clay
19,0%
Sand
44,2%
Silt
36,8%
15–30 cm
pH H₂O
5,5
Org. C
25,1g/kg
Clay
19,2%
Sand
41,9%
Silt
38,9%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest46.0%
Crops18.0%
Built-up1.2%
Bare soil1.6%
Other (grassland, water…)33.2%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology4 basins · 6 lakes · 13 rivers
Hydrology metrics for this exact territory
Stream length here
83,6km
Lake surface here
6,57km²
Basins crossed
4
Max stream order
5
Max drainage
9 239km²
Discharge in basins
63,4m³/s
Mean precip.
1 159mm/an
Mean T°
13,1°C
Moisture idx
0,18
Max snow
8%
Mean runoff
740mm/an
Mean elev. (basins)
59m
Watersheds crossing here
Lakes (6, top by area)
Rivers / streams (13, ord ≥ 4)
- L'Adourord 6len here16.69 km8%total201 km
- Ruisseau de Cabanesord 5len here13.56 km100%total14 km
- Ruisseau de Poustagnacord 5len here13.08 km100%total13 km
- Ruisseau du Moulinord 1len here11.52 km75%total15 km
- Ruisseau d'Estirauxord 2len here7.37 km100%total7 km
- Ruisseau de Jouaninord 1len here6.60 km100%total7 km
- Courant de Soustonsord 4len here5.43 km17%total32 km
- Ruisseau de Martinetord 5len here2.52 km21%total12 km
- La Barthe Ouverteord 2len here2.00 km100%total2 km
- Ruisseau de Mollevielleord 1len here1.75 km60%total3 km
- L'Ouzenteord 5len here1.37 km100%total1 km
- Ruisseau de Lespontèsord 5len here1.27 km11%total11 km
1 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
0,6nW
Built-up
118,2%
Pesticides
34,0kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas5
IUCN Not Reported · 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
Zones humides de l'arrière dune du Marensin
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2021
16 km²
Tourbière de Mées
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2018
1 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN
Sub-administrations8
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.