World Species : Protected Area : Marais de l'Erdre

Marais de l'Erdre

Location:	France
Area:	6,798 acres (2,751 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	90 %	10 %	70 %	15 %	10 %	5 %	50 %	30 %	15 %	5 %
Soil Type	Eutric Fluvisols	Eutric Gleysols	Dystric Cambisols	Gleyic Podzoluvisols	Haplic Luvisols	Umbric Leptosols	Eutric Cambisols	Haplic Luvisols	Gleyic Podzoluvisols	Eutric Cambisols	Fibric Histosols
Topsoil Texture	Medium	Medium	Medium	Medium	Medium	Medium	Medium	Medium	Medium	Medium	Fine
Reference Depth	100 cm	100 cm	100 cm	100 cm	100 cm	30 cm	100 cm	100 cm	100 cm	100 cm	100 cm
Drainage	Poor	Poor	Moderately well	Poor	Moderately well	Imperfectly	Moderately well	Moderately well	Poor	Moderately well	Very poor
Available Water Capacity	150 m	150 m	100 m	150 m	150 m	15 mm	50 m	150 m	100 m	150 m	150 m
Phase 1	Flooded	Flooded	Stony
Root Obstacle	40 - 60 cm	40 - 60 cm	40 - 60 cm	None to 80 cm	None to 80 cm		None to 80 cm	None to 80 cm	None to 80 cm	60 - 80 cm	None to 80 cm
Impermeable Layer	80 - 150 cm	80 - 150 cm	None to 150 cm	80 - 150 cm	None to 150 cm		0 - 40 cm	80 - 150 cm	40 - 80 cm	None to 150 cm	80 - 150 cm
Soil Water Regime	Wet within 80 cm for 3 to 6 months, but not 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	Not wet within 80 cm for over 3 months, nor wet within 40 cm for over 1 month	Wet within 80 cm for 3 to 6 months, but not 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		Wet within 80 cm for 3 to 6 months, but not 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	Wet within 80 cm for 3 to 6 months, but not 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	Wet within 40 cm depth for over 11 month
Topsoil Properties
Gravel	4 %	4 %	10 %	1 %	4 %	6 %	9 %	4 %	1 %	9 %	1 %
Sand	39 %	37 %	42 %	32 %	41 %	49 %	42 %	41 %	32 %	42 %	20 %
Silt	40 %	40 %	38 %	49 %	37 %	31 %	36 %	37 %	49 %	36 %	40 %
Clay	21 %	23 %	20 %	19 %	22 %	20 %	22 %	22 %	19 %	22 %	40 %
USDA Texture	Loam	Loam	Loam	Loam	Loam	Loam	Loam	Loam	Loam	Loam	Clay
Reference Bulk Density	1.4 g/cm³	1.38 g/cm³	1.41 g/cm³	1.4 g/cm³	1.4 g/cm³	1.43 g/cm³	1.4 g/cm³	1.4 g/cm³	1.4 g/cm³	1.4 g/cm³	1.26 g/cm³
Bulk Density	1.36 g/cm³	1.35 g/cm³	1.3 g/cm³	1.35 g/cm³	1.43 g/cm³	1.1 g/cm³	1.37 g/cm³	1.43 g/cm³	1.35 g/cm³	1.37 g/cm³	0.1 g/cm³
Organic Carbon	0.86 %	1.07 %	1.45 %	2.22 %	0.74 %	2.4 %	1 %	0.74 %	2.22 %	1 %	33.63 %
PH	7.2	6.2	5.1	5.3	6.5	5.1	6.6	6.5	5.3	6.6	4.3
Clay Cation Exchange Capacity	63 cmol kg⁻¹	41 cmol kg⁻¹	32 cmol kg⁻¹	36 cmol kg⁻¹	47 cmol kg⁻¹	34 cmol kg⁻¹	55 cmol kg⁻¹	47 cmol kg⁻¹	36 cmol kg⁻¹	55 cmol kg⁻¹	45 cmol kg⁻¹
Soil Cation Exchange Capacity	16 cmol kg⁻¹	13 cmol kg⁻¹	12 cmol kg⁻¹	17 cmol kg⁻¹	13 cmol kg⁻¹	12 cmol kg⁻¹	16 cmol kg⁻¹	13 cmol kg⁻¹	17 cmol kg⁻¹	16 cmol kg⁻¹	77 cmol kg⁻¹
Base Saturation	91 %	88 %	38 %	55 %	91 %	36 %	93 %	91 %	55 %	93 %	62 %
Total Exchangeable Bases	16.9 cmol kg⁻¹	10.2 cmol kg⁻¹	4.3 cmol kg⁻¹	5.7 cmol kg⁻¹	11 cmol kg⁻¹	4.7 cmol kg⁻¹	14 cmol kg⁻¹	11 cmol kg⁻¹	5.7 cmol kg⁻¹	14 cmol kg⁻¹	31.4 cmol kg⁻¹
Calcium Carbonate	0.5 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %
Calcium Sulphate	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %
Exchangeable Sodium	2 %	2 %	2 %	0 %	1 %	4 %	2 %	1 %	0 %	2 %	2 %
Electrical Conductivity	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	0.1 dS m-1	0.1 dS m-1	0.1 dS m-1
Subsoil Properties
Gravel	7 %	5 %	19 %	4 %	3 %		12 %	3 %	4 %	12 %	2 %
Sand	41 %	36 %	45 %	25 %	37 %		41 %	37 %	25 %	41 %	47 %
Silt	38 %	36 %	35 %	51 %	34 %		34 %	34 %	51 %	34 %	26 %
Clay	21 %	28 %	20 %	24 %	29 %		25 %	29 %	24 %	25 %	27 %
USDA Texture	Loam	Clay loam	Loam	Silt loam	Clay loam		Loam	Clay loam	Silt loam	Loam	Sandy clay loam
Reference Bulk Density	1.4 g/cm³	1.35 g/cm³	1.42 g/cm³	1.35 g/cm³	1.35 g/cm³		1.38 g/cm³	1.35 g/cm³	1.35 g/cm³	1.38 g/cm³	1.38 g/cm³
Bulk Density	1.39 g/cm³	1.5 g/cm³	1.36 g/cm³	1.6 g/cm³	1.51 g/cm³		1.39 g/cm³	1.51 g/cm³	1.6 g/cm³	1.39 g/cm³	0.1 g/cm³
Organic Carbon	0.38 %	0.37 %	0.5 %	0.5 %	0.36 %		0.37 %	0.36 %	0.5 %	0.37 %	32.89 %
PH	7.5	6.6	5.2	5.4	6.7		7	6.7	5.4	7	4.6
Clay Cation Exchange Capacity	61 cmol kg⁻¹	42 cmol kg⁻¹	35 cmol kg⁻¹	40 cmol kg⁻¹	50 cmol kg⁻¹		55 cmol kg⁻¹	50 cmol kg⁻¹	40 cmol kg⁻¹	55 cmol kg⁻¹	71 cmol kg⁻¹
Soil Cation Exchange Capacity	14 cmol kg⁻¹	13 cmol kg⁻¹	9 cmol kg⁻¹	14 cmol kg⁻¹	14 cmol kg⁻¹		15 cmol kg⁻¹	14 cmol kg⁻¹	14 cmol kg⁻¹	15 cmol kg⁻¹	78 cmol kg⁻¹
Base Saturation	96 %	90 %	33 %	59 %	93 %		93 %	93 %	59 %	93 %	40 %
Total Exchangeable Bases	15.2 cmol kg⁻¹	11.9 cmol kg⁻¹	2.6 cmol kg⁻¹	4.9 cmol kg⁻¹	13.1 cmol kg⁻¹		15.1 cmol kg⁻¹	13.1 cmol kg⁻¹	4.9 cmol kg⁻¹	15.1 cmol kg⁻¹	27.4 cmol kg⁻¹
Calcium Carbonate	2.5 %	0 %	0 %	0 %	0 %		0.1 %	0 %	0 %	0.1 %	0 %
Calcium Sulphate	0 %	0 %	0 %	0 %	0 %		0 %	0 %	0 %	0 %	0 %
Exchangeable Sodium	3 %	2 %	2 %	0 %	1 %		2 %	1 %	0 %	2 %	1 %
Electrical Conductivity	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	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