World Species : Protected Area : Preseli

Preseli

Location:	Wales, United Kingdom
Area:	6,686 acres (2,706 hectares)
Species:	All Endangered Invasive
Website:	View website
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

Celtic broadleaf forests

Soils

— Protected Area Boundary

	A				B

Share	55 %	20 %	15 %	10 %	50 %	15 %	10 %	10 %	10 %
Soil Type	Umbric Gleysols	Dystric Gleysols	Ferric Podzols	Fibric Histosols	Dystric Cambisols	Dystric Cambisols	Ferric Podzols	Dystric Gleysols	Umbric Leptosols
Topsoil Texture	Medium	Medium	Medium	Fine	Medium	Medium	Medium	Medium	Medium
Reference Depth	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	30 cm
Drainage	Poor	Poor	Moderately well	Very poor	Imperfectly	Imperfectly	Imperfectly	Poor	Imperfectly
Available Water Capacity	50 m	75 m	15 m	150 m	50 m	50 m	50 m	75 m	15 mm
Phase 1	Stony		Stony		Lithic	Lithic	Lithic	Lithic
Root Obstacle	None to 80 cm	None to 80 cm	40 - 60 cm	None to 80 cm	60 - 80 cm	60 - 80 cm	60 - 80 cm	60 - 80 cm
Impermeable Layer	0 - 40 cm	0 - 40 cm	0 - 40 cm	None to 150 cm	None to 150 cm	None to 150 cm	0 - 40 cm	None to 150 cm
Soil Water Regime	Wet within 40 cm depth for over 11 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	Wet within 40 cm depth 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	Wet within 40 cm depth for over 11 month	Wet within 40 cm depth for over 11 month
Topsoil Properties
Gravel	4 %	2 %	15 %	1 %	10 %	10 %	15 %	2 %	6 %
Sand	38 %	40 %	45 %	20 %	42 %	42 %	45 %	40 %	49 %
Silt	42 %	39 %	52 %	40 %	38 %	38 %	52 %	39 %	31 %
Clay	20 %	21 %	3 %	40 %	20 %	20 %	3 %	21 %	20 %
USDA Texture	Loam	Loam	Silt loam	Clay	Loam	Loam	Silt loam	Loam	Loam
Reference Bulk Density	1.4 g/cm³	1.4 g/cm³	1.7 g/cm³	1.26 g/cm³	1.41 g/cm³	1.41 g/cm³	1.7 g/cm³	1.4 g/cm³	1.43 g/cm³
Bulk Density	1.31 g/cm³	1.3 g/cm³	0.96 g/cm³	0.1 g/cm³	1.3 g/cm³	1.3 g/cm³	0.96 g/cm³	1.3 g/cm³	1.1 g/cm³
Organic Carbon	4.59 %	1.17 %	4.6 %	33.63 %	1.45 %	1.45 %	4.6 %	1.17 %	2.4 %
PH	5.2	5.1	4.6	4.3	5.1	5.1	4.6	5.1	5.1
Clay Cation Exchange Capacity	34 cmol kg⁻¹	25 cmol kg⁻¹	64 cmol kg⁻¹	45 cmol kg⁻¹	32 cmol kg⁻¹	32 cmol kg⁻¹	64 cmol kg⁻¹	25 cmol kg⁻¹	34 cmol kg⁻¹
Soil Cation Exchange Capacity	20 cmol kg⁻¹	11 cmol kg⁻¹	20 cmol kg⁻¹	77 cmol kg⁻¹	12 cmol kg⁻¹	12 cmol kg⁻¹	20 cmol kg⁻¹	11 cmol kg⁻¹	12 cmol kg⁻¹
Base Saturation	82 %	47 %	10 %	62 %	38 %	38 %	10 %	47 %	36 %
Total Exchangeable Bases	1.8 cmol kg⁻¹	5.5 cmol kg⁻¹	4.4 cmol kg⁻¹	31.4 cmol kg⁻¹	4.3 cmol kg⁻¹	4.3 cmol kg⁻¹	4.4 cmol kg⁻¹	5.5 cmol kg⁻¹	4.7 cmol kg⁻¹
Calcium Carbonate	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %
Calcium Sulphate	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %
Exchangeable Sodium	2 %	1 %	1 %	2 %	2 %	2 %	1 %	1 %	4 %
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
Subsoil Properties
Gravel	5 %	6 %	17 %	2 %	19 %	19 %	17 %	6 %
Sand	38 %	41 %	51 %	47 %	45 %	45 %	51 %	41 %
Silt	32 %	34 %	45 %	26 %	35 %	35 %	45 %	34 %
Clay	30 %	25 %	4 %	27 %	20 %	20 %	4 %	25 %
USDA Texture	Clay loam	Loam	Sandy loam	Sandy clay loam	Loam	Loam	Sandy loam	Loam
Reference Bulk Density	1.34 g/cm³	1.38 g/cm³	1.67 g/cm³	1.38 g/cm³	1.42 g/cm³	1.42 g/cm³	1.67 g/cm³	1.38 g/cm³
Bulk Density	1.49 g/cm³	1.36 g/cm³	1.29 g/cm³	0.1 g/cm³	1.36 g/cm³	1.36 g/cm³	1.29 g/cm³	1.36 g/cm³
Organic Carbon	0.67 %	0.4 %	0.81 %	32.89 %	0.5 %	0.5 %	0.81 %	0.4 %
PH	5.2	5.3	5.1	4.6	5.2	5.2	5.1	5.3
Clay Cation Exchange Capacity	38 cmol kg⁻¹	29 cmol kg⁻¹	56 cmol kg⁻¹	71 cmol kg⁻¹	35 cmol kg⁻¹	35 cmol kg⁻¹	56 cmol kg⁻¹	29 cmol kg⁻¹
Soil Cation Exchange Capacity	11 cmol kg⁻¹	10 cmol kg⁻¹	9 cmol kg⁻¹	78 cmol kg⁻¹	9 cmol kg⁻¹	9 cmol kg⁻¹	9 cmol kg⁻¹	10 cmol kg⁻¹
Base Saturation	86 %	47 %	13 %	40 %	33 %	33 %	13 %	47 %
Total Exchangeable Bases	10 cmol kg⁻¹	6.1 cmol kg⁻¹	0.8 cmol kg⁻¹	27.4 cmol kg⁻¹	2.6 cmol kg⁻¹	2.6 cmol kg⁻¹	0.8 cmol kg⁻¹	6.1 cmol kg⁻¹
Calcium Carbonate	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %
Calcium Sulphate	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %
Exchangeable Sodium	4 %	1 %	2 %	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

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