Elkhorn Slough Preserve

Location:California, United States
IUCN Category:Ia
Area:964 acres (390 hectares)
Species:All  Endangered  Invasive
Climate:View Climate Data
Land Use:View Land Use Data

Ecoregions

California interior chaparral and woodlands

Soils

Link to Map
Protected Area Boundary
 A
  
Share50 %30 %10 %10 %
Soil TypeHaplic PhaeozemsLuvic PhaeozemsChromic VertisolsLithosols
Topsoil TextureMediumMediumFineMedium
Reference Depth100 cm100 cm100 cm10 cm
DrainageModerately wellModerately wellPoorImperfectly
Available Water Capacity150 m150 m125 m15 mm
Misc. Property  Vertic (cracks of more than 1 cm wide) 
Topsoil Properties
Gravel7 %4 %4 %26 %
Sand39 %35 %16 %43 %
Silt38 %41 %29 %34 %
Clay23 %24 %55 %23 %
USDA TextureLoamLoamClayLoam
Reference Bulk Density1.38 g/cm³1.37 g/cm³1.21 g/cm³1.39 g/cm³
Bulk Density1.33 g/cm³1.28 g/cm³1.65 g/cm³1.3 g/cm³
Organic Carbon1.83 %1.68 %0.75 %1.4 %
PH6.46.27.97.6
Clay Cation Exchange Capacity55 cmol kg⁻¹52 cmol kg⁻¹75 cmol kg⁻¹42 cmol kg⁻¹
Soil Cation Exchange Capacity18 cmol kg⁻¹19 cmol kg⁻¹44 cmol kg⁻¹15 cmol kg⁻¹
Base Saturation87 %87 %100 %100 %
Total Exchangeable Bases11.4 cmol kg⁻¹16.1 cmol kg⁻¹45.2 cmol kg⁻¹15.6 cmol kg⁻¹
Calcium Carbonate0 %0 %2.5 %3.9 %
Calcium Sulphate0 %0 %0 %0 %
Exchangeable Sodium1 %2 %1 %4 %
Electrical Conductivity0.1 dS m-10.1 dS m-10.2 dS m-10.1 dS m-1
Subsoil Properties
Gravel3 %5 %5 % 
Sand43 %30 %15 % 
Silt35 %36 %28 % 
Clay22 %34 %57 % 
USDA TextureLoamClay loamClay 
Reference Bulk Density1.4 g/cm³1.31 g/cm³1.21 g/cm³ 
Bulk Density1.39 g/cm³1.37 g/cm³1.76 g/cm³ 
Organic Carbon0.64 %0.69 %0.45 % 
PH6.86.88.1 
Clay Cation Exchange Capacity64 cmol kg⁻¹64 cmol kg⁻¹73 cmol kg⁻¹ 
Soil Cation Exchange Capacity16 cmol kg⁻¹24 cmol kg⁻¹43 cmol kg⁻¹ 
Base Saturation92 %92 %100 % 
Total Exchangeable Bases12.2 cmol kg⁻¹23.8 cmol kg⁻¹47.5 cmol kg⁻¹ 
Calcium Carbonate0 %0.4 %3.9 % 
Calcium Sulphate0 %0 %0 % 
Exchangeable Sodium1 %2 %3 % 
Electrical Conductivity0.1 dS m-10.1 dS m-10.3 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.