Achnahaird

Location:Scotland, United Kingdom
Area:53 acres (21 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

North Atlantic moist mixed forests

Soils

Link to Map
Protected Area Boundary
 A
  
Share40 %30 %20 %5 %
Soil TypeFibric HistosolsUmbric GleysolsFerric PodzolsLithic Leptosols
Topsoil TextureFineFineCoarseMedium
Reference Depth100 cm100 cm100 cm10 cm
DrainageVery poorVery poorSomewhat excessiveImperfectly
Available Water Capacity150 m150 m75 m15 mm
Root ObstacleNone to 80 cmNone to 80 cm40 - 60 cm 
Impermeable LayerNone to 150 cm40 - 80 cm40 - 80 cm 
Soil Water RegimeWet within 40 cm depth for over 11 monthWet within 40 cm depth for over 11 monthWet within 40 cm depth for over 11 month 
Topsoil Properties
Gravel1 %1 %3 %21 %
Sand20 %17 %86 %42 %
Silt40 %29 %8 %34 %
Clay40 %54 %6 %24 %
USDA TextureClayClayLoamy sandLoam
Reference Bulk Density1.26 g/cm³1.22 g/cm³1.67 g/cm³1.38 g/cm³
Bulk Density0.1 g/cm³1.23 g/cm³1.41 g/cm³1.3 g/cm³
Organic Carbon33.63 %4.54 %2.02 %1.61 %
PH4.354.57.5
Clay Cation Exchange Capacity45 cmol kg⁻¹23 cmol kg⁻¹78 cmol kg⁻¹42 cmol kg⁻¹
Soil Cation Exchange Capacity77 cmol kg⁻¹24 cmol kg⁻¹5 cmol kg⁻¹16 cmol kg⁻¹
Base Saturation62 %22 %17 %100 %
Total Exchangeable Bases31.4 cmol kg⁻¹7.1 cmol kg⁻¹2.5 cmol kg⁻¹15.5 cmol kg⁻¹
Calcium Carbonate0 %0 %0 %3.9 %
Calcium Sulphate0 %0 %0 %0 %
Exchangeable Sodium2 %1 %0 %3 %
Electrical Conductivity0.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-1
Subsoil Properties
Gravel2 %1 %3 % 
Sand47 %22 %86 % 
Silt26 %25 %6 % 
Clay27 %53 %8 % 
USDA TextureSandy clay loamClayLoamy sand 
Reference Bulk Density1.38 g/cm³1.23 g/cm³1.63 g/cm³ 
Bulk Density0.1 g/cm³1.28 g/cm³1.57 g/cm³ 
Organic Carbon32.89 %1.23 %0.51 % 
PH4.655.1 
Clay Cation Exchange Capacity71 cmol kg⁻¹15 cmol kg⁻¹50 cmol kg⁻¹ 
Soil Cation Exchange Capacity78 cmol kg⁻¹19 cmol kg⁻¹2 cmol kg⁻¹ 
Base Saturation40 %27 %21 % 
Total Exchangeable Bases27.4 cmol kg⁻¹5.7 cmol kg⁻¹1.5 cmol kg⁻¹ 
Calcium Carbonate0 %0 %0 % 
Calcium Sulphate0 %0 %0 % 
Exchangeable Sodium1 %2 %0 % 
Electrical Conductivity0.1 dS m-10.1 dS m-10.1 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