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GLOBAL SYMPOSIUM ON SOIL BIODIVERSITY | 19-22 April 2021 FIRST EVALUATION IN SOUTH AMERICA OF THE “SOIL BIOLOGICAL QUALITY INDEX QBS-ar”: A PILOT STUDY IN THE BOLIVIAN AMAZON LABORATORIO BOLIVIANO DE BIOTA Y DESARROLLO Jaime I. Rodríguez-Fernández
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FIRST EVALUATION IN SOUTH AMERICA OF THE “SOIL …

May 12, 2022

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Page 1: FIRST EVALUATION IN SOUTH AMERICA OF THE “SOIL …

GLOBAL SYMPOSIUM ON SOIL BIODIVERSITY | 19-22 April 2021

FIRST EVALUATION IN SOUTH AMERICA OF THE “SOIL BIOLOGICAL QUALITY INDEX QBS-ar”:

A PILOT STUDY IN THE BOLIVIAN AMAZON

FAO/Bolivia

LABORATORIO BOLIVIANODE BIOTA Y DESARROLLO

UNIVERSIDAD AMAZÓNICA DE PANDO/Bolivia

Sergio Ledezma/Sergio Laguna

Jaime I. Rodríguez-Fernández

Priscila Teresa Nina Peña

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Body length and width of major groups of soilorganisms.From Orgiazzi et al. 2016

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Value of the soil biodiversity

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Some biological indicators of the soil

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Discrimination of mesofaunaaccordingpresence of euedaphicgroups(Parisi, 2001)

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Original values of theecomorphological index (EMI) of the microarthropods of themesofauna(Parisi, 2001)

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Values of the ecomorphological index (EMI) include different values according different“ecomorphs” in the same group. Ex.: Collembola(Parisi, 2001)

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Value of the ecomorphological index (EMI) of themicroarthropods of the mesofauna

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Morphological characteristics to definition of values of theecomorphological index (EMI) of themicroarthropods of the mesofauna

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Area: Amazon Forest/ Bolivia, related with amazon nut extraction

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Altered soils/Bolivian amazon

forest soils/Bolivian Amazon

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Perfil n2: Horizonte Ap de un perfil en un sitio en el que se ha cortado el bosque el primer horizonte tiene mayor contenido de Materia Orgánica per no pasa de los 30 cm y en el cuál se concentran y desarrollan raíces finas.

El segundo Horizonte esta endurecido o compactado prácticamente sin raíces, este endurecimiento se debe al cambio de uso de la tierra para la ganadería, la compactación del segundo horizonte no permite el desarrollo de raíces lo que causará problemas en el crecimiento de las gramíneas sembradas para la pastura ganadera reduciendo de esta manera la carga animal resultando insostenible su manejo.

Ap

Bsx

Perfil N° 4 Suelo aluvial del ríobeni cerca a la comunidad deSanta CrucitoNotar que son coloresoscuros se asumió por unprobable myor contenido demateria orgánicade sedimentos de origenaluvial depositados por el ríoBeni en periodos deinundación. En el 2do

horizonte se identificó lapresencia de moteos omanchas de color rojizo queindican periodos cortos consaturación de agua.

N° de Perfil: 002

Fecha 07/05/19

Localización a 98 Km De Cobija a

Puerto Rico

Unidad Fisiográfica: Parte alta de

Penillanura

Elevación 200 msnm

Clase de pendiente 0 – 1%

Forma de pendiente R

Litología Intemperizado

Rocosidad Superficial Ninguna

Pedregosidad Superficial Ninguna

Cobertura vegetal: Pastos

sembrados

Uso de la Tierra: Campo de

pastura

Materia Orgánica en la

Superficial: Moderada

Profundidad efectiva: Poco

profundo. Suelo Compactado

Drenaje: Bien Drenado

Encostramiento ninguno

Latitud 8687452

Longitud 516866

Clasificación: Ferralsol

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Sampling with Winkler extractor

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Sampling withBerlesse funnel

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Results

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Results

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15,000 individuals

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Log

abu

nd

ance

Log abundance of the microarthropods of the mesofauna

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Value of theecomorphologicalindex (EMI) of themicroarthropodsof the mesofauna

Winkler-1 dayvs.

Winkler-14 days(same extractors)

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Value of theecomorphologicalindex (EMI) of themicroarthropodsof the mesofauna

Berlese-14 days-forestvs.

Berlese-14 days-alteredsoils

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QBS-ar index – Berlese (forest vs. altered soils)

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Complementary results:

Collembola: From 5 previously know species in Bolivia to27 genera in 14 families!!! - collaboration with the teamof Dr. Palacios-Vargas (UNAM/Mexico)

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Complementary results: An ilustrated guide about mesofauna and the us of the QBS-ar index

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Next steps:

1) Search of collaborators and resources toevaluations in other places in Bolivia

2) A paper about the research (inpreparation)

3) Inclusion of the”: biological component”in discussions about the project of the newlaw of soils in Bolivia

4) Socialization of the guide to potentialusers

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Team

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Team(the communities)

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Thank you for your attention

[email protected]@fao.org

[email protected]

FAO/Bolivia

LABORATORIO BOLIVIANODE BIOTA Y DESARROLLO [email protected]