World Species : Protected Area : Río Negro National Park

Río Negro National Park

Location:	Paraguay
IUCN Category:	II
Area:	73,775 acres (29,856 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

Dry Chaco
Pantanal

Soils

— Protected Area Boundary

	A				B		C				D

Share	40 %	30 %	15 %	15 %	60 %	40 %	40 %	30 %	15 %	15 %	40 %	30 %	15 %	15 %
Soil Type	Gleyic Solonetz	Eutric Fluvisols	Dystric Planosols	Haplic Arenosols	Dystric Fluvisols	Eutric Fluvisols	Haplic Solonetz	Gleyic Luvisols	Eutric Planosols	Gleyic Solonetz	Eutric Regosols	Luvic Arenosols	Chromic Cambisols	Haplic Solonetz
Topsoil Texture	Medium	Fine	Medium	Coarse	Medium	Fine	Medium	Fine	Medium	Medium	Medium	Coarse	Medium	Fine
Reference Depth	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	Poor	Imperfectly	Poor	Somewhat excessive	Moderately well	Imperfectly	Moderately well	Poor	Poor	Poor	Moderately well	Moderately well	Moderately well	Moderately well
Available Water Capacity	150 m	150 m	150 m	100 m	150 m	150 m	150 m	150 m	150 m	150 m	150 m	100 m	150 m	150 m
Topsoil Properties
Gravel	0 %	0 %	2 %	1 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %
Sand	31 %	21 %	67 %	80 %	16 %	17 %	41 %	27 %	36 %	22 %	10 %	77 %	55 %	41 %
Silt	34 %	34 %	24 %	16 %	73 %	45 %	26 %	31 %	31 %	51 %	78 %	11 %	21 %	23 %
Clay	35 %	45 %	9 %	4 %	11 %	38 %	33 %	42 %	33 %	27 %	12 %	12 %	24 %	36 %
USDA Texture	Clay loam	Clay	Sandy loam	Loamy sand	Silt loam	Silty clay loam	Clay loam	Clay	Clay loam	Clay loam	Silt loam	Sandy loam	Sandy clay loam	Clay loam
Reference Bulk Density	1.3 g/cm³	1.25 g/cm³	1.57 g/cm³	1.72 g/cm³	1.44 g/cm³	1.26 g/cm³	1.33 g/cm³	1.27 g/cm³	1.32 g/cm³	1.32 g/cm³	1.42 g/cm³	1.55 g/cm³	1.4 g/cm³	1.32 g/cm³
Bulk Density	1.4 g/cm³	1.3 g/cm³	1.4 g/cm³	1.5 g/cm³	1.35 g/cm³	1.26 g/cm³	1.52 g/cm³	1.5 g/cm³	1.46 g/cm³	1.4 g/cm³	1.17 g/cm³	1.5 g/cm³	1.31 g/cm³	1.5 g/cm³
Organic Carbon	1.35 %	1.04 %	0.53 %	0.23 %	0.36 %	0.23 %	0.67 %	0.86 %	1.18 %	0.4 %	1.28 %	0.1 %	1.15 %	1.82 %
PH	5.6	6.4	5.1	5.5	6	8	5.7	7.7	7.1	7.8	6.2	6.9	6.8	6.5
Clay Cation Exchange Capacity	42 cmol kg⁻¹	53 cmol kg⁻¹	140 cmol kg⁻¹	44 cmol kg⁻¹	53 cmol kg⁻¹	63 cmol kg⁻¹	79 cmol kg⁻¹	18 cmol kg⁻¹	27 cmol kg⁻¹	78 cmol kg⁻¹	37 cmol kg⁻¹	115 cmol kg⁻¹	27 cmol kg⁻¹	62 cmol kg⁻¹
Soil Cation Exchange Capacity	19 cmol kg⁻¹	28 cmol kg⁻¹	29 cmol kg⁻¹	2 cmol kg⁻¹	6 cmol kg⁻¹	23 cmol kg⁻¹	28 cmol kg⁻¹	11 cmol kg⁻¹	14 cmol kg⁻¹	21 cmol kg⁻¹	9 cmol kg⁻¹	14 cmol kg⁻¹	11 cmol kg⁻¹	28 cmol kg⁻¹
Base Saturation	82 %	90 %	5 %	64 %	80 %	99 %	100 %	100 %	86 %	97 %	88 %	80 %	90 %	100 %
Total Exchangeable Bases	15.5 cmol kg⁻¹	25.1 cmol kg⁻¹	1.5 cmol kg⁻¹	1.4 cmol kg⁻¹	4.8 cmol kg⁻¹	22.8 cmol kg⁻¹	28 cmol kg⁻¹	11 cmol kg⁻¹	12 cmol kg⁻¹	20.4 cmol kg⁻¹	7.9 cmol kg⁻¹	11.2 cmol kg⁻¹	9.9 cmol kg⁻¹	28 cmol kg⁻¹
Calcium Carbonate	0 %	0.2 %	0 %	0 %	0 %	1.9 %	0 %	2 %	1 %	1.3 %	0.1 %	0.3 %	0.5 %	0.7 %
Calcium Sulphate	0 %	0.1 %	0 %	0 %	0 %	0.1 %	0 %	0.1 %	0.1 %	0.1 %	0 %	0.1 %	0.1 %	0 %
Exchangeable Sodium	10 %	2 %	0 %	2 %	2 %	2 %	18 %	1 %	3 %	32 %	3 %	4 %	2 %	21 %
Electrical Conductivity	0 dS m-1	0.1 dS m-1	0 dS m-1	0 dS m-1	0 dS m-1	0.1 dS m-1	0 dS m-1	0.2 dS m-1	0.1 dS m-1	2.3 dS m-1	0 dS m-1	0.1 dS m-1	0.1 dS m-1	0.5 dS m-1
Subsoil Properties
Gravel	0 %	0 %	4 %	1 %	0 %		0 %	0 %	0 %	0 %	0 %	0 %	0 %	0 %
Sand	24 %	36 %	60 %	80 %	17 %		39 %	27 %	30 %	12 %	12 %	81 %	53 %	37 %
Silt	26 %	26 %	26 %	15 %	74 %		26 %	29 %	34 %	41 %	78 %	12 %	21 %	22 %
Clay	50 %	38 %	14 %	5 %	9 %		35 %	44 %	36 %	47 %	10 %	7 %	26 %	41 %
USDA Texture	Clay	Clay loam	Sandy loam	Loamy sand	Silt loam		Clay loam	Clay	Clay loam	Silty clay	Silt loam	Loamy sand	Sandy clay loam	Clay
Reference Bulk Density	1.24 g/cm³	1.3 g/cm³	1.49 g/cm³	1.68 g/cm³	1.48 g/cm³		1.32 g/cm³	1.26 g/cm³	1.3 g/cm³	1.22 g/cm³	1.45 g/cm³	1.64 g/cm³	1.39 g/cm³	1.29 g/cm³
Bulk Density	1.42 g/cm³	1.43 g/cm³	1.42 g/cm³	1.53 g/cm³	1.42 g/cm³		1.57 g/cm³	1.67 g/cm³	1.49 g/cm³	1.42 g/cm³	1.29 g/cm³	1.5 g/cm³	1.43 g/cm³	1.57 g/cm³
Organic Carbon	0.46 %	0.31 %	0.4 %	0.1 %	0.28 %		0.21 %	0.26 %	0.46 %	0.25 %	0.29 %	0.1 %	0.31 %	0.82 %
PH	7.1	6.7	5.6	5.6	6.7		6.6	7.8	7.7	9.4	7.8	6.9	7.7	7.8
Clay Cation Exchange Capacity	55 cmol kg⁻¹	60 cmol kg⁻¹	140 cmol kg⁻¹	7 cmol kg⁻¹	67 cmol kg⁻¹		81 cmol kg⁻¹	33 cmol kg⁻¹	51 cmol kg⁻¹	45 cmol kg⁻¹	106 cmol kg⁻¹	125 cmol kg⁻¹	54 cmol kg⁻¹	86 cmol kg⁻¹
Soil Cation Exchange Capacity	29 cmol kg⁻¹	22 cmol kg⁻¹	33 cmol kg⁻¹	1 cmol kg⁻¹	6 cmol kg⁻¹		29 cmol kg⁻¹	14 cmol kg⁻¹	20 cmol kg⁻¹	21 cmol kg⁻¹	12 cmol kg⁻¹	15 cmol kg⁻¹	15 cmol kg⁻¹	38 cmol kg⁻¹
Base Saturation	100 %	96 %	5 %	100 %	85 %		100 %	100 %	100 %	100 %	96 %	80 %	99 %	100 %
Total Exchangeable Bases	29.3 cmol kg⁻¹	21.2 cmol kg⁻¹	1.7 cmol kg⁻¹	0.7 cmol kg⁻¹	5.1 cmol kg⁻¹		29 cmol kg⁻¹	14 cmol kg⁻¹	20 cmol kg⁻¹	21 cmol kg⁻¹	11.5 cmol kg⁻¹	12 cmol kg⁻¹	14.9 cmol kg⁻¹	38 cmol kg⁻¹
Calcium Carbonate	1.4 %	1 %	0 %	0 %	1.5 %		0.3 %	2 %	2 %	3 %	1.6 %	0.3 %	1.9 %	2.3 %
Calcium Sulphate	0.1 %	0.1 %	0 %	0 %	0.1 %		0.1 %	0.1 %	0.1 %	0.1 %	0.1 %	0.1 %	0.1 %	0.1 %
Exchangeable Sodium	20 %	2 %	1 %	3 %	2 %		30 %	2 %	3 %	48 %	3 %	3 %	1 %	31 %
Electrical Conductivity	4.1 dS m-1	0.1 dS m-1	0 dS m-1	0 dS m-1	0.2 dS m-1		1.5 dS m-1	0.2 dS m-1	0.2 dS m-1	2.5 dS m-1	0.1 dS m-1	0.1 dS m-1	0.1 dS m-1	2.4 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