World Species : Protected Area : Isalo National Park

Isalo National Park

Location:	Madagascar
IUCN Category:	II
Area:	215,133 acres (87,061 hectares)
Species:	All Endangered Invasive
Website:	View website
Climate:	View Climate Data
Land Use:	View Land Use Data
Köppen climate classification:	Aw (Climate: equatorial; Precipitation: winter dry)

Ecoregions

Madagascar subhumid forests
Madagascar succulent woodlands

Soils

— Protected Area Boundary

	A				B						C

Share	50 %	20 %	20 %	10 %	30 %	20 %	20 %	10 %	10 %	10 %	60 %	20 %	20 %
Soil Type	Dystric Cambisols	Ferric Luvisols	Chromic Luvisols	Chromic Cambisols	Eutric Nitosols	Orthic Acrisols	Ferric Acrisols	Rankers	Lithosols	Ferralic Cambisols	Eutric Regosols	Cambic Arenosols	Lithosols
Topsoil Texture	Medium	Medium	Medium	Fine	Medium	Medium	Medium	Medium	Medium	Medium	Coarse	Coarse	Medium
Reference Depth	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	30 cm	10 cm	100 cm	100 cm	100 cm	10 cm
Drainage	Moderately well	Moderately well	Moderately well	Moderately well	Moderately well	Moderately well	Moderately well	Imperfectly	Imperfectly	Moderately well	Somewhat excessive	Somewhat excessive	Imperfectly
Available Water Capacity	150 m	150 m	150 m	150 m	150 m	150 m	150 m	50 mm	15 mm	150 m	100 m	100 m	15 mm
Topsoil Properties
Gravel	10 %	11 %	9 %	3 %	10 %	10 %	23 %	10 %	26 %	1 %	18 %	4 %	26 %
Sand	41 %	56 %	47 %	20 %	49 %	49 %	53 %	48 %	43 %	52 %	83 %	89 %	43 %
Silt	39 %	20 %	29 %	30 %	28 %	27 %	22 %	31 %	34 %	25 %	11 %	6 %	34 %
Clay	20 %	24 %	24 %	50 %	23 %	24 %	25 %	21 %	23 %	23 %	6 %	5 %	23 %
USDA Texture	Loam	Sandy clay loam	Loam	Clay	Loam	Sandy clay loam	Sandy clay loam	Loam	Loam	Sandy clay loam	Loamy sand	Sand	Loam
Reference Bulk Density	1.41 g/cm³	1.41 g/cm³	1.39 g/cm³	1.23 g/cm³	1.4 g/cm³	1.4 g/cm³	1.4 g/cm³	1.42 g/cm³	1.39 g/cm³	1.41 g/cm³	1.67 g/cm³	1.7 g/cm³	1.39 g/cm³
Bulk Density	1.3 g/cm³	1.48 g/cm³	1.54 g/cm³	1.23 g/cm³	1.49 g/cm³	1.4 g/cm³	1.4 g/cm³	1.45 g/cm³	1.3 g/cm³	1.31 g/cm³	1.42 g/cm³	1.5 g/cm³	1.3 g/cm³
Organic Carbon	1.45 %	0.74 %	0.86 %	1.43 %	0.58 %	1 %	0.98 %	1.43 %	1.4 %	0.95 %	0.5 %	0.4 %	1.4 %
PH	5.1	6.3	6.4	6.8	6.2	4.6	5.1	5.1	7.6	4.7	6.6	6.4	7.6
Clay Cation Exchange Capacity	30 cmol kg⁻¹	23 cmol kg⁻¹	38 cmol kg⁻¹	35 cmol kg⁻¹	32 cmol kg⁻¹	16 cmol kg⁻¹	14 cmol kg⁻¹	18 cmol kg⁻¹	42 cmol kg⁻¹	16 cmol kg⁻¹	54 cmol kg⁻¹	39 cmol kg⁻¹	42 cmol kg⁻¹
Soil Cation Exchange Capacity	12 cmol kg⁻¹	7 cmol kg⁻¹	12 cmol kg⁻¹	21 cmol kg⁻¹	9 cmol kg⁻¹	7 cmol kg⁻¹	6 cmol kg⁻¹	9 cmol kg⁻¹	15 cmol kg⁻¹	6 cmol kg⁻¹	5 cmol kg⁻¹	3 cmol kg⁻¹	15 cmol kg⁻¹
Base Saturation	37 %	85 %	89 %	91 %	81 %	44 %	49 %	47 %	100 %	39 %	94 %	100 %	100 %
Total Exchangeable Bases	4.1 cmol kg⁻¹	6.1 cmol kg⁻¹	10 cmol kg⁻¹	20.8 cmol kg⁻¹	7.2 cmol kg⁻¹	3.5 cmol kg⁻¹	2.7 cmol kg⁻¹	3.7 cmol kg⁻¹	15.6 cmol kg⁻¹	2.6 cmol kg⁻¹	4.4 cmol kg⁻¹	3 cmol kg⁻¹	15.6 cmol kg⁻¹
Calcium Carbonate	0 %	0 %	0 %	0.1 %	0 %	0 %	0 %	0 %	3.9 %	0 %	0 %	0 %	3.9 %
Calcium Sulphate	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %
Exchangeable Sodium	1 %	2 %	1 %	1 %	1 %	1 %	2 %	2 %	4 %	2 %	3 %	3 %	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	0.1 dS m-1	0.1 dS m-1	0.1 dS m-1	0.1 dS m-1
Subsoil Properties
Gravel	20 %	10 %	8 %	4 %	5 %	10 %	19 %			5 %	21 %	4 %
Sand	45 %	44 %	39 %	20 %	38 %	40 %	41 %			48 %	81 %	89 %
Silt	35 %	19 %	27 %	29 %	23 %	24 %	20 %			24 %	11 %	5 %
Clay	20 %	37 %	34 %	51 %	39 %	36 %	39 %			28 %	8 %	6 %
USDA Texture	Loam	Clay loam	Clay loam	Clay	Clay loam	Clay loam	Clay loam			Sandy clay loam	Loamy sand	Sand
Reference Bulk Density	1.42 g/cm³	1.32 g/cm³	1.33 g/cm³	1.23 g/cm³	1.31 g/cm³	1.32 g/cm³	1.31 g/cm³			1.37 g/cm³	1.62 g/cm³	1.68 g/cm³
Bulk Density	1.37 g/cm³	1.47 g/cm³	1.52 g/cm³	1.38 g/cm³	1.54 g/cm³	1.4 g/cm³	1.4 g/cm³			1.3 g/cm³	1.29 g/cm³	1.52 g/cm³
Organic Carbon	0.5 %	0.34 %	0.38 %	0.6 %	0.4 %	0.42 %	0.39 %			0.35 %	0.3 %	0.21 %
PH	5.2	6	6.3	7.2	6.3	4.8	5			4.9	6.7	6.3
Clay Cation Exchange Capacity	36 cmol kg⁻¹	21 cmol kg⁻¹	40 cmol kg⁻¹	33 cmol kg⁻¹	41 cmol kg⁻¹	14 cmol kg⁻¹	12 cmol kg⁻¹			12 cmol kg⁻¹	48 cmol kg⁻¹	37 cmol kg⁻¹
Soil Cation Exchange Capacity	9 cmol kg⁻¹	8 cmol kg⁻¹	15 cmol kg⁻¹	23 cmol kg⁻¹	15 cmol kg⁻¹	6 cmol kg⁻¹	6 cmol kg⁻¹			5 cmol kg⁻¹	4 cmol kg⁻¹	3 cmol kg⁻¹
Base Saturation	33 %	77 %	93 %	97 %	82 %	32 %	33 %			57 %	75 %	100 %
Total Exchangeable Bases	2.6 cmol kg⁻¹	6.6 cmol kg⁻¹	12.3 cmol kg⁻¹	19.5 cmol kg⁻¹	9.4 cmol kg⁻¹	2.3 cmol kg⁻¹	1.3 cmol kg⁻¹			3.7 cmol kg⁻¹	2.8 cmol kg⁻¹	2.5 cmol kg⁻¹
Calcium Carbonate	0 %	0 %	0 %	0.5 %	0 %	0 %	0 %			0 %	0 %	0 %
Calcium Sulphate	0 %	0 %	0 %	0 %	0 %	0 %	0 %			0 %	0 %	0 %
Exchangeable Sodium	1 %	2 %	1 %	1 %	1 %	2 %	2 %			2 %	3 %	3 %
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	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