World Species : Protected Area : MARAIS ET ESTUAIRE DE LA SEUDRE, ILE D'OLERON

MARAIS ET ESTUAIRE DE LA SEUDRE, ILE D'OLERON

Location:	France
Area:	34,521 acres (13,970 hectares)
Species:	All Endangered Invasive
Climate:	View Climate Data
Land Use:	View Land Use Data
Köppen climate classification:	Cfb (Climate: warm temperate; Precipitation: fully humid; Temperature: warm summer)
Natura 2000 Data Sheet:	View Data Sheet Explanatory notes

Ecoregions

Atlantic mixed forests

Soils

— Protected Area Boundary

	A	B		C				D

Share		70 %	30 %	50 %	30 %	10 %	10 %	50 %	30 %	20 %
Soil Type	Dystric Regosols	Gleyic Solonchaks	Eutric Gleysols	Chromic Cambisols	Chromic Cambisols	Haplic Luvisols	Chromic Luvisols	Chromic Cambisols	Chromic Cambisols	Chromic Luvisols
Topsoil Texture	Coarse	Fine	Fine	Medium	Medium	Medium	Medium	Medium	Fine	Medium
Reference Depth	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm
Drainage	Somewhat excessive	Poor	Very poor	Moderately well	Moderately well	Moderately well	Moderately well	Moderately well	Moderately well	Moderately well
Available Water Capacity	100 m	150 m	150 m	150 m	150 m	150 m	150 m	100 m	75 m	150 m
Phase 1								Stony	Stony
Root Obstacle	None to 80 cm	None to 80 cm	None to 80 cm	None to 80 cm	None to 80 cm	None to 80 cm	None to 80 cm	40 - 60 cm	60 - 80 cm	None to 80 cm
Impermeable Layer	None to 150 cm	80 - 150 cm	80 - 150 cm	None to 150 cm	None to 150 cm	None to 150 cm	None to 150 cm	None to 150 cm	None to 150 cm	None to 150 cm
Soil Water Regime	Not wet within 80 cm for over 3 months, nor wet within 40 cm for over 1 month	Wet within 80 cm over 6 months, but not wet within 40 cm for over 11 month	Wet within 80 cm over 6 months, but not wet within 40 cm for over 11 month	Not wet within 80 cm for over 3 months, nor wet within 40 cm for over 1 month	Not wet within 80 cm for over 3 months, nor wet within 40 cm for over 1 month	Not wet within 80 cm for over 3 months, nor wet within 40 cm for over 1 month	Not wet within 80 cm for over 3 months, nor wet within 40 cm for over 1 month	Not wet within 80 cm for over 3 months, nor wet within 40 cm for over 1 month	Not wet within 80 cm for over 3 months, nor wet within 40 cm for over 1 month	Not wet within 80 cm for over 3 months, nor wet within 40 cm for over 1 month
Topsoil Properties
Gravel	19 %	4 %	1 %	10 %	10 %	4 %	12 %	10 %	2 %	12 %
Sand	78 %	22 %	17 %	49 %	49 %	41 %	48 %	49 %	21 %	48 %
Silt	13 %	26 %	32 %	28 %	28 %	37 %	28 %	28 %	29 %	28 %
Clay	9 %	52 %	51 %	23 %	23 %	22 %	24 %	23 %	50 %	24 %
USDA Texture	Sandy loam	Clay	Clay	Loam	Loam	Loam	Loam	Loam	Clay	Loam
Reference Bulk Density	1.6 g/cm³	1.23 g/cm³	1.22 g/cm³	1.4 g/cm³	1.4 g/cm³	1.4 g/cm³	1.4 g/cm³	1.4 g/cm³	1.24 g/cm³	1.4 g/cm³
Bulk Density	1.27 g/cm³	1.23 g/cm³	1.25 g/cm³	1.31 g/cm³	1.31 g/cm³	1.43 g/cm³	1.53 g/cm³	1.31 g/cm³	1.23 g/cm³	1.53 g/cm³
Organic Carbon	0.7 %	0.53 %	1.25 %	0.98 %	0.98 %	0.74 %	0.83 %	0.98 %	1.43 %	0.83 %
PH	5.6	8.8	5.8	6.6	6.6	6.5	6.3	6.6	6.8	6.3
Clay Cation Exchange Capacity	29 cmol kg⁻¹	39 cmol kg⁻¹	37 cmol kg⁻¹	42 cmol kg⁻¹	42 cmol kg⁻¹	47 cmol kg⁻¹	39 cmol kg⁻¹	42 cmol kg⁻¹	32 cmol kg⁻¹	39 cmol kg⁻¹
Soil Cation Exchange Capacity	6 cmol kg⁻¹	29 cmol kg⁻¹	25 cmol kg⁻¹	13 cmol kg⁻¹	13 cmol kg⁻¹	13 cmol kg⁻¹	12 cmol kg⁻¹	13 cmol kg⁻¹	21 cmol kg⁻¹	12 cmol kg⁻¹
Base Saturation	98 %	100 %	78 %	83 %	83 %	91 %	88 %	83 %	94 %	88 %
Total Exchangeable Bases	4.1 cmol kg⁻¹	46.5 cmol kg⁻¹	18.9 cmol kg⁻¹	11.6 cmol kg⁻¹	11.6 cmol kg⁻¹	11 cmol kg⁻¹	10 cmol kg⁻¹	11.6 cmol kg⁻¹	22.9 cmol kg⁻¹	10 cmol kg⁻¹
Calcium Carbonate	0 %	9 %	0 %	0.1 %	0.1 %	0 %	0 %	0.1 %	0.2 %	0 %
Calcium Sulphate	0 %	0.4 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %
Exchangeable Sodium	3 %	45 %	2 %	2 %	2 %	1 %	1 %	2 %	1 %	1 %
Electrical Conductivity	0.1 dS m-1	12.7 dS m-1	0.1 dS m-1	0.1 dS m-1	0.1 dS m-1	0.1 dS m-1	0.1 dS m-1	0.1 dS m-1	0.1 dS m-1	0.1 dS m-1
Subsoil Properties
Gravel	14 %	6 %	1 %	9 %	9 %	3 %	8 %	9 %	4 %	8 %
Sand	77 %	24 %	19 %	47 %	47 %	37 %	41 %	47 %	21 %	41 %
Silt	13 %	23 %	29 %	26 %	26 %	34 %	25 %	26 %	28 %	25 %
Clay	10 %	53 %	52 %	27 %	27 %	29 %	34 %	27 %	51 %	34 %
USDA Texture	Sandy loam	Clay	Clay	Sandy clay loam	Sandy clay loam	Clay loam	Clay loam	Sandy clay loam	Clay	Clay loam
Reference Bulk Density	1.58 g/cm³	1.23 g/cm³	1.23 g/cm³	1.38 g/cm³	1.38 g/cm³	1.35 g/cm³	1.33 g/cm³	1.38 g/cm³	1.23 g/cm³	1.33 g/cm³
Bulk Density	1.5 g/cm³	1.31 g/cm³	1.35 g/cm³	1.44 g/cm³	1.44 g/cm³	1.51 g/cm³	1.51 g/cm³	1.44 g/cm³	1.38 g/cm³	1.51 g/cm³
Organic Carbon	0.31 %	0.38 %	0.45 %	0.47 %	0.47 %	0.36 %	0.4 %	0.47 %	0.58 %	0.4 %
PH	5.3	8.8	6	6.7	6.7	6.7	6.4	6.7	7.2	6.4
Clay Cation Exchange Capacity	36 cmol kg⁻¹	48 cmol kg⁻¹	40 cmol kg⁻¹	44 cmol kg⁻¹	44 cmol kg⁻¹	50 cmol kg⁻¹	41 cmol kg⁻¹	44 cmol kg⁻¹	31 cmol kg⁻¹	41 cmol kg⁻¹
Soil Cation Exchange Capacity	4 cmol kg⁻¹	29 cmol kg⁻¹	23 cmol kg⁻¹	15 cmol kg⁻¹	15 cmol kg⁻¹	14 cmol kg⁻¹	15 cmol kg⁻¹	15 cmol kg⁻¹	23 cmol kg⁻¹	15 cmol kg⁻¹
Base Saturation	28 %	100 %	84 %	92 %	92 %	93 %	90 %	92 %	96 %	90 %
Total Exchangeable Bases	1 cmol kg⁻¹	55.3 cmol kg⁻¹	17 cmol kg⁻¹	11.9 cmol kg⁻¹	11.9 cmol kg⁻¹	13.1 cmol kg⁻¹	12 cmol kg⁻¹	11.9 cmol kg⁻¹	19.5 cmol kg⁻¹	12 cmol kg⁻¹
Calcium Carbonate	0 %	9 %	0 %	0.1 %	0.1 %	0 %	0 %	0.1 %	0.4 %	0 %
Calcium Sulphate	0 %	0.5 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %
Exchangeable Sodium	3 %	42 %	3 %	1 %	1 %	1 %	1 %	1 %	1 %	1 %
Electrical Conductivity	0.1 dS m-1	21.5 dS m-1	0.1 dS m-1	0.1 dS m-1	0.1 dS m-1	0.1 dS m-1	0.1 dS m-1	0.1 dS m-1	0.1 dS m-1	0.1 dS m-1

Soil data provided by FAO/IIASA/ISRIC/ISSCAS/JRC, 2012. Harmonized World Soil Database (version 1.2). FAO, Rome, Italy and IIASA, Laxenburg, Austria.

Köppen climate classification provided by Kottek, M., J. Grieser, C. Beck, B. Rudolf, and F. Rubel, 2006: World Map of Köppen-Geiger Climate Classification updated. Meteorol. Z., 15, 259-263