World Species : Protected Area : Stodmarsh

Stodmarsh

Location:	England, United Kingdom
Area:	1,395 acres (565 hectares)
Species:	All Endangered Invasive
Website:	View website
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

English Lowlands beech forests

Soils

— Protected Area Boundary

	A				B

Share	70 %	15 %	10 %	5 %	60 %	20 %	15 %	5 %
Soil Type	Haplic Luvisols	Gleyic Luvisols	Chromic Luvisols	Eutric Fluvisols	Eutric Fluvisols	Dystric Fluvisols	Mollic Gleysols	Terric Histosols
Topsoil Texture	Medium	Medium	Medium	Fine	Medium	Medium	Coarse	Medium
Reference Depth	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm
Drainage	Moderately well	Poor	Moderately well	Very poor	Poor	Poor	Poor	Very poor
Available Water Capacity	150 m	150 m	50 m	150 m	150 m	150 m	150 m	150 m
Phase 1			Gravelly
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	None to 80 cm
Impermeable Layer	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	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 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 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	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	Wet within 40 cm depth for over 11 month
Topsoil Properties
Gravel	4 %	5 %	12 %	4 %	4 %	4 %	10 %	28 %
Sand	41 %	47 %	48 %	19 %	39 %	47 %	76 %	35 %
Silt	37 %	29 %	28 %	32 %	40 %	33 %	14 %	33 %
Clay	22 %	24 %	24 %	49 %	21 %	20 %	10 %	32 %
USDA Texture	Loam	Loam	Loam	Clay	Loam	Loam	Sandy loam	Clay loam
Reference Bulk Density	1.4 g/cm³	1.39 g/cm³	1.4 g/cm³	1.24 g/cm³	1.4 g/cm³	1.42 g/cm³	1.58 g/cm³	1.32 g/cm³
Bulk Density	1.43 g/cm³	1.54 g/cm³	1.53 g/cm³	1.27 g/cm³	1.36 g/cm³	1.33 g/cm³	1.48 g/cm³	0.28 g/cm³
Organic Carbon	0.74 %	0.83 %	0.83 %	1.19 %	0.86 %	1.05 %	0.89 %	39.4 %
PH	6.5	6.3	6.3	6.2	7.2	4.8	6.4	5.6
Clay Cation Exchange Capacity	47 cmol kg⁻¹	46 cmol kg⁻¹	39 cmol kg⁻¹	38 cmol kg⁻¹	63 cmol kg⁻¹	21 cmol kg⁻¹	43 cmol kg⁻¹	45 cmol kg⁻¹
Soil Cation Exchange Capacity	13 cmol kg⁻¹	16 cmol kg⁻¹	12 cmol kg⁻¹	24 cmol kg⁻¹	16 cmol kg⁻¹	7 cmol kg⁻¹	8 cmol kg⁻¹	87 cmol kg⁻¹
Base Saturation	91 %	93 %	88 %	91 %	91 %	36 %	73 %	75 %
Total Exchangeable Bases	11 cmol kg⁻¹	14.9 cmol kg⁻¹	10 cmol kg⁻¹	22.7 cmol kg⁻¹	16.9 cmol kg⁻¹	2.6 cmol kg⁻¹	6.3 cmol kg⁻¹	59.5 cmol kg⁻¹
Calcium Carbonate	0 %	0 %	0 %	0 %	0.5 %	0 %	0 %	0 %
Calcium Sulphate	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %
Exchangeable Sodium	1 %	2 %	1 %	1 %	2 %	2 %	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
Subsoil Properties
Gravel	3 %	6 %	8 %	3 %	7 %	8 %	8 %	5 %
Sand	37 %	39 %	41 %	21 %	41 %	51 %	60 %	52 %
Silt	34 %	27 %	25 %	32 %	38 %	29 %	14 %	23 %
Clay	29 %	34 %	34 %	47 %	21 %	20 %	26 %	25 %
USDA Texture	Clay loam	Clay loam	Clay loam	Clay	Loam	Loam	Sandy clay loam	Sandy clay loam
Reference Bulk Density	1.35 g/cm³	1.33 g/cm³	1.33 g/cm³	1.24 g/cm³	1.4 g/cm³	1.43 g/cm³	1.41 g/cm³	1.38 g/cm³
Bulk Density	1.51 g/cm³	1.65 g/cm³	1.51 g/cm³	1.39 g/cm³	1.39 g/cm³	1.39 g/cm³	1.64 g/cm³	0.18 g/cm³
Organic Carbon	0.36 %	0.28 %	0.4 %	0.55 %	0.38 %	0.41 %	0.6 %	38.46 %
PH	6.7	7	6.4	6.8	7.5	4.9	6.7	5.8
Clay Cation Exchange Capacity	50 cmol kg⁻¹	44 cmol kg⁻¹	41 cmol kg⁻¹	41 cmol kg⁻¹	61 cmol kg⁻¹	20 cmol kg⁻¹	43 cmol kg⁻¹	49 cmol kg⁻¹
Soil Cation Exchange Capacity	14 cmol kg⁻¹	16 cmol kg⁻¹	15 cmol kg⁻¹	20 cmol kg⁻¹	14 cmol kg⁻¹	7 cmol kg⁻¹	13 cmol kg⁻¹	88 cmol kg⁻¹
Base Saturation	93 %	99 %	90 %	99 %	96 %	29 %	81 %	96 %
Total Exchangeable Bases	13.1 cmol kg⁻¹	15.9 cmol kg⁻¹	12 cmol kg⁻¹	18.2 cmol kg⁻¹	15.2 cmol kg⁻¹	2 cmol kg⁻¹	11.7 cmol kg⁻¹	81.8 cmol kg⁻¹
Calcium Carbonate	0 %	0.4 %	0 %	0.2 %	2.5 %	0 %	0.1 %	0 %
Calcium Sulphate	0 %	0 %	0 %	0 %	0 %	0 %	0.1 %	0 %
Exchangeable Sodium	1 %	2 %	1 %	2 %	3 %	2 %	3 %	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

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