World Species : Protected Area : Reserve de Moukalaba-Dougoua (Gamba Complex)

Reserve de Moukalaba-Dougoua (Gamba Complex)

Location:	Gabon
IUCN Category:	IV
Area:	266,550 acres (107,869 hectares)
Species:	All Endangered Invasive
Climate:	View Climate Data
Land Use:	View Land Use Data
Köppen climate classification:	Aw (Climate: equatorial; Precipitation: winter dry)

Ecoregions

Atlantic Equatorial coastal forests

Soils

— Protected Area Boundary

	A						B						C

Share	30 %	20 %	20 %	10 %	10 %	10 %	30 %	20 %	20 %	10 %	10 %	10 %	30 %	20 %	20 %	10 %	10 %	10 %
Soil Type	Ferralic Cambisols	Eutric Nitosols	Orthic Ferralsols	Lithosols	Dystric Gleysols	Plinthic Acrisols	Xantic Ferralsols	Dystric Nitosols	Plinthic Acrisols	Dystric Fluvisols	Gleysols	Humic Cambisols	Ferralic Arenosols	Luvic Arenosols	Xantic Ferralsols	Dystric Fluvisols	Dystric Gleysols	Ferralic Cambisols
Topsoil Texture	Medium	Medium	Medium	Medium	Medium	Medium	Fine	Medium	Medium	Medium	Medium	Medium	Coarse	Coarse	Coarse	Medium	Medium	Medium
Reference Depth	100 cm	100 cm	100 cm	10 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm	100 cm
Drainage	Moderately well	Moderately well	Moderately well	Imperfectly	Poor	Poor	Moderately well	Moderately well	Poor	Poor	Poor	Moderately well	Somewhat excessive	Somewhat excessive	Well	Poor	Poor	Moderately well
Available Water Capacity	150 m	150 m	150 m	15 mm	150 m	150 m	50 m	150 m	150 m	150 m	150 m	150 m	100 m	100 m	150 m	150 m	150 m	150 m
Phase 1							Petric
Topsoil Properties
Gravel	1 %	10 %	3 %	26 %	2 %	3 %	1 %	11 %	35 %	4 %	4 %	8 %	1 %	4 %	2 %	4 %	2 %	1 %
Sand	52 %	49 %	60 %	43 %	40 %	57 %	32 %	44 %	47 %	49 %	38 %	41 %	89 %	90 %	79 %	49 %	40 %	52 %
Silt	25 %	28 %	14 %	34 %	39 %	15 %	14 %	33 %	30 %	32 %	40 %	36 %	5 %	5 %	7 %	32 %	39 %	25 %
Clay	23 %	23 %	26 %	23 %	21 %	28 %	54 %	23 %	23 %	19 %	22 %	23 %	6 %	5 %	14 %	19 %	21 %	23 %
USDA Texture	Sandy clay loam	Loam	Sandy clay loam	Loam	Loam	Sandy clay loam	Clay	Loam	Loam	Loam	Loam	Loam	Sand	Sand	Sandy loam	Loam	Loam	Sandy clay loam
Reference Bulk Density	1.41 g/cm³	1.4 g/cm³	1.41 g/cm³	1.39 g/cm³	1.4 g/cm³	1.39 g/cm³	1.25 g/cm³	1.39 g/cm³	1.4 g/cm³	1.43 g/cm³	1.39 g/cm³	1.39 g/cm³	1.68 g/cm³	1.71 g/cm³	1.54 g/cm³	1.43 g/cm³	1.4 g/cm³	1.41 g/cm³
Bulk Density	1.31 g/cm³	1.49 g/cm³	1.4 g/cm³	1.3 g/cm³	1.33 g/cm³	1.34 g/cm³	1.12 g/cm³	1.35 g/cm³	1.44 g/cm³	1.33 g/cm³	1.33 g/cm³	1.1 g/cm³	1.54 g/cm³	1.5 g/cm³	1.35 g/cm³	1.33 g/cm³	1.33 g/cm³	1.31 g/cm³
Organic Carbon	0.95 %	0.58 %	1.06 %	1.4 %	1.25 %	0.98 %	1.63 %	0.99 %	1.13 %	1.1 %	1.27 %	2.72 %	0.4 %	0.35 %	0.7 %	1.1 %	1.25 %	0.95 %
PH	4.7	6.2	5	7.6	5.1	4.7	4.4	4.9	4.8	5	5.8	5.2	5.6	5.7	4.8	5	5.1	4.7
Clay Cation Exchange Capacity	16 cmol kg⁻¹	32 cmol kg⁻¹	8 cmol kg⁻¹	42 cmol kg⁻¹	24 cmol kg⁻¹	9 cmol kg⁻¹	3 cmol kg⁻¹	20 cmol kg⁻¹	13 cmol kg⁻¹	24 cmol kg⁻¹	35 cmol kg⁻¹	54 cmol kg⁻¹	27 cmol kg⁻¹	32 cmol kg⁻¹	9 cmol kg⁻¹	24 cmol kg⁻¹	24 cmol kg⁻¹	16 cmol kg⁻¹
Soil Cation Exchange Capacity	6 cmol kg⁻¹	9 cmol kg⁻¹	6 cmol kg⁻¹	15 cmol kg⁻¹	11 cmol kg⁻¹	5 cmol kg⁻¹	8 cmol kg⁻¹	9 cmol kg⁻¹	6 cmol kg⁻¹	7 cmol kg⁻¹	12 cmol kg⁻¹	21 cmol kg⁻¹	2 cmol kg⁻¹	2 cmol kg⁻¹	3 cmol kg⁻¹	7 cmol kg⁻¹	11 cmol kg⁻¹	6 cmol kg⁻¹
Base Saturation	39 %	81 %	38 %	100 %	47 %	44 %	13 %	51 %	54 %	36 %	82 %	24 %	71 %	80 %	29 %	36 %	47 %	39 %
Total Exchangeable Bases	2.6 cmol kg⁻¹	7.2 cmol kg⁻¹	2 cmol kg⁻¹	15.6 cmol kg⁻¹	5.5 cmol kg⁻¹	2 cmol kg⁻¹	0.9 cmol kg⁻¹	3.1 cmol kg⁻¹	3 cmol kg⁻¹	2.9 cmol kg⁻¹	8.8 cmol kg⁻¹	5 cmol kg⁻¹	2.1 cmol kg⁻¹	1.9 cmol kg⁻¹	0.9 cmol kg⁻¹	2.9 cmol kg⁻¹	5.5 cmol kg⁻¹	2.6 cmol kg⁻¹
Calcium Carbonate	0 %	0 %	0 %	3.9 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %
Calcium Sulphate	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %
Exchangeable Sodium	2 %	1 %	3 %	4 %	1 %	0 %	2 %	1 %	2 %	2 %	2 %	1 %	3 %	3 %	3 %	2 %	1 %	2 %
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	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 %	5 %	3 %		4 %	3 %	2 %	26 %	19 %	8 %	5 %	8 %	4 %	4 %	4 %	8 %	4 %	5 %
Sand	48 %	38 %	51 %		41 %	47 %	27 %	35 %	36 %	52 %	37 %	44 %	89 %	87 %	70 %	52 %	41 %	48 %
Silt	24 %	23 %	14 %		34 %	13 %	12 %	24 %	27 %	28 %	35 %	32 %	4 %	5 %	7 %	28 %	34 %	24 %
Clay	28 %	39 %	35 %		25 %	40 %	61 %	41 %	37 %	20 %	28 %	24 %	7 %	8 %	23 %	20 %	25 %	28 %
USDA Texture	Sandy clay loam	Clay loam	Sandy clay		Loam	Sandy clay	Clay (heavy)	Clay	Clay loam	Loam	Clay loam	Loam	Sand	Loamy sand	Sandy clay loam	Loam	Loam	Sandy clay loam
Reference Bulk Density	1.37 g/cm³	1.31 g/cm³	1.35 g/cm³		1.38 g/cm³	1.32 g/cm³	1.22 g/cm³	1.29 g/cm³	1.31 g/cm³	1.43 g/cm³	1.35 g/cm³	1.39 g/cm³	1.66 g/cm³	1.63 g/cm³	1.44 g/cm³	1.43 g/cm³	1.38 g/cm³	1.37 g/cm³
Bulk Density	1.3 g/cm³	1.54 g/cm³	1.37 g/cm³		1.36 g/cm³	1.33 g/cm³	1.24 g/cm³	1.53 g/cm³	1.39 g/cm³	1.29 g/cm³	1.43 g/cm³	1.16 g/cm³	1.55 g/cm³	1.5 g/cm³	1.49 g/cm³	1.29 g/cm³	1.36 g/cm³	1.3 g/cm³
Organic Carbon	0.35 %	0.4 %	0.35 %		0.4 %	0.36 %	0.53 %	0.38 %	0.41 %	0.42 %	0.42 %	1.03 %	0.2 %	0.2 %	0.33 %	0.42 %	0.4 %	0.35 %
PH	4.9	6.3	5		5.2	4.6	4.7	5	4.8	5	6.3	5.2	5.4	5.6	4.8	5	5.2	4.9
Clay Cation Exchange Capacity	12 cmol kg⁻¹	41 cmol kg⁻¹	9 cmol kg⁻¹		31 cmol kg⁻¹	8 cmol kg⁻¹	4 cmol kg⁻¹	18 cmol kg⁻¹	12 cmol kg⁻¹	22 cmol kg⁻¹	38 cmol kg⁻¹	38 cmol kg⁻¹	20 cmol kg⁻¹	24 cmol kg⁻¹	5 cmol kg⁻¹	22 cmol kg⁻¹	31 cmol kg⁻¹	12 cmol kg⁻¹
Soil Cation Exchange Capacity	5 cmol kg⁻¹	15 cmol kg⁻¹	4 cmol kg⁻¹		10 cmol kg⁻¹	4 cmol kg⁻¹	4 cmol kg⁻¹	8 cmol kg⁻¹	6 cmol kg⁻¹	7 cmol kg⁻¹	12 cmol kg⁻¹	15 cmol kg⁻¹	2 cmol kg⁻¹	2 cmol kg⁻¹	3 cmol kg⁻¹	7 cmol kg⁻¹	10 cmol kg⁻¹	5 cmol kg⁻¹
Base Saturation	57 %	82 %	46 %		47 %	46 %	19 %	28 %	32 %	28 %	86 %	30 %	74 %	76 %	45 %	28 %	47 %	57 %
Total Exchangeable Bases	3.7 cmol kg⁻¹	9.4 cmol kg⁻¹	2.8 cmol kg⁻¹		6.1 cmol kg⁻¹	2.8 cmol kg⁻¹	1.1 cmol kg⁻¹	4.7 cmol kg⁻¹	1.9 cmol kg⁻¹	1.9 cmol kg⁻¹	9.5 cmol kg⁻¹	2.5 cmol kg⁻¹	2.1 cmol kg⁻¹	2.1 cmol kg⁻¹	1.1 cmol kg⁻¹	1.9 cmol kg⁻¹	6.1 cmol kg⁻¹	3.7 cmol kg⁻¹
Calcium Carbonate	0 %	0 %	0 %		0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %
Calcium Sulphate	0 %	0 %	0 %		0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %
Exchangeable Sodium	2 %	1 %	3 %		1 %	0 %	2 %	1 %	3 %	2 %	2 %	2 %	4 %	3 %	4 %	2 %	1 %	2 %
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	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