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                Shingle Islands— Protected Area Boundary |  | A |  |  |  |  | Share | 70 % | 20 % | 10 % |  | Soil Type | Haplic Podzols | Ferric Podzols | Dystric Gleysols |  | Topsoil Texture | Coarse | Coarse | Coarse |  | Reference Depth | 100 cm | 100 cm | 100 cm |  | Drainage | Somewhat excessive | Somewhat excessive | Poor |  | Available Water Capacity | 100 m | 100 m | 150 m |  | Root Obstacle | 40 - 60 cm | 40 - 60 cm | None to 80 cm |  | Impermeable Layer | None to 150 cm | None to 150 cm | 40 - 80 cm |  | Soil Water Regime | 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 80 cm for 3 to 6 months, but not wet within 40 cm for over 1 month |  | Topsoil Properties |  | Gravel | 3 % | 3 % | 10 % |  | Sand | 87 % | 86 % | 74 % |  | Silt | 9 % | 8 % | 16 % |  | Clay | 4 % | 6 % | 10 % |  | USDA Texture | Loamy sand | Loamy sand | Sandy loam |  | Reference Bulk Density | 1.73 g/cm³ | 1.67 g/cm³ | 1.57 g/cm³ |  | Bulk Density | 1.4 g/cm³ | 1.41 g/cm³ | 1.4 g/cm³ |  | Organic Carbon | 2.18 % | 2.02 % | 0.93 % |  | PH | 4.4 | 4.5 | 5.2 |  | Clay Cation Exchange Capacity | 101 cmol kg⁻¹ | 78 cmol kg⁻¹ | 20 cmol kg⁻¹ |  | Soil Cation Exchange Capacity | 9 cmol kg⁻¹ | 5 cmol kg⁻¹ | 5 cmol kg⁻¹ |  | Base Saturation | 11 % | 17 % | 48 % |  | Total Exchangeable Bases | 2.6 cmol kg⁻¹ | 2.5 cmol kg⁻¹ | 2.6 cmol kg⁻¹ |  | Calcium Carbonate | 0 % | 0 % | 0 % |  | Calcium Sulphate | 0 % | 0 % | 0 % |  | Exchangeable Sodium | 1 % | 0 % | 2 % |  | Electrical Conductivity | 0.1 dS m-1 | 0.1 dS m-1 | 0.1 dS m-1 |  | Subsoil Properties |  | Gravel | 4 % | 3 % | 8 % |  | Sand | 88 % | 86 % | 68 % |  | Silt | 8 % | 6 % | 16 % |  | Clay | 4 % | 8 % | 16 % |  | USDA Texture | Sand | Loamy sand | Sandy loam |  | Reference Bulk Density | 1.74 g/cm³ | 1.63 g/cm³ | 1.49 g/cm³ |  | Bulk Density | 1.51 g/cm³ | 1.57 g/cm³ | 1.57 g/cm³ |  | Organic Carbon | 0.39 % | 0.51 % | 0.23 % |  | PH | 5 | 5.1 | 5 |  | Clay Cation Exchange Capacity | 66 cmol kg⁻¹ | 50 cmol kg⁻¹ | 23 cmol kg⁻¹ |  | Soil Cation Exchange Capacity | 2 cmol kg⁻¹ | 2 cmol kg⁻¹ | 4 cmol kg⁻¹ |  | Base Saturation | 21 % | 21 % | 54 % |  | Total Exchangeable Bases | 1.5 cmol kg⁻¹ | 1.5 cmol kg⁻¹ | 3.4 cmol kg⁻¹ |  | Calcium Carbonate | 0 % | 0 % | 0 % |  | Calcium Sulphate | 0 % | 0 % | 0 % |  | Exchangeable Sodium | 3 % | 0 % | 3 % |  | Electrical Conductivity | 0.1 dS m-1 | 0.1 dS m-1 | 0.1 dS m-1 | 
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