Impact of land protection in soil quality properties and in earthworm biomass in Venezuelan savannas

We studied soil parameters and the earthworm biomass and density in a protected savanna (PS) from fire and cattle raising for more than forty years located at Estación Biológica de los Llanos, Venezuela (EBLL), and an adjacent non-protected savanna (NS) under frequent burning and agricultural activi...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	López-Hernández,D, Hernández,L, Ojeda,A, Quintero,E, Caipo,S
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2014
Materias:	Soil fertility Glossoscolecidae microbial biomass dehydrogenase fire
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000400013
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-95162014000400013
record_format	dspace
spelling	oai:scielo:S0718-951620140004000132015-01-20Impact of land protection in soil quality properties and in earthworm biomass in Venezuelan savannasLópez-Hernández,DHernández,LOjeda,AQuintero,ECaipo,S Soil fertility Glossoscolecidae microbial biomass dehydrogenase fire We studied soil parameters and the earthworm biomass and density in a protected savanna (PS) from fire and cattle raising for more than forty years located at Estación Biológica de los Llanos, Venezuela (EBLL), and an adjacent non-protected savanna (NS) under frequent burning and agricultural activities, located less than 1 km apart. Earthworm sampling was carried out at the end of the dry season (April), and at the peak of the wet season (July-August) using a hand sorting extraction method. In each plot, five to seven sampling units were selected corresponding to soil monoliths of 25x25x30 cm. The main physical, chemical, microbial (biomass) and enzymatic activities of soils in both systems were estimated. Thepresence of an abundant litter layer under the tree canopies in the PS have increased the soil water retention capacity, the organic-C, C-microbial biomass, dehydrogenase activity and fertility levels respect NS. This may allow for an increase in the density and biomass of earthworms in the PS compared with the adjacent NS. The systems were characterized by abundance in juvenile individuals belonging to the Glossoscolecidae family; two different morphotypes of the genus Aicodrilus were registered. Earthworms found were located in an endo-anecic ecological category. Results suggest that, agricultural management in savannas by modification of physical and biochemical soil properties can decrease an important fraction of pedofauna, particularly their earthworm communities. However, earthworm populations and soil quality indicators can be restored after long-term protection.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.14 n.4 20142014-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000400013en10.4067/S0718-95162014005000073
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Soil fertility Glossoscolecidae microbial biomass dehydrogenase fire
spellingShingle	Soil fertility Glossoscolecidae microbial biomass dehydrogenase fire López-Hernández,D Hernández,L Ojeda,A Quintero,E Caipo,S Impact of land protection in soil quality properties and in earthworm biomass in Venezuelan savannas
description	We studied soil parameters and the earthworm biomass and density in a protected savanna (PS) from fire and cattle raising for more than forty years located at Estación Biológica de los Llanos, Venezuela (EBLL), and an adjacent non-protected savanna (NS) under frequent burning and agricultural activities, located less than 1 km apart. Earthworm sampling was carried out at the end of the dry season (April), and at the peak of the wet season (July-August) using a hand sorting extraction method. In each plot, five to seven sampling units were selected corresponding to soil monoliths of 25x25x30 cm. The main physical, chemical, microbial (biomass) and enzymatic activities of soils in both systems were estimated. Thepresence of an abundant litter layer under the tree canopies in the PS have increased the soil water retention capacity, the organic-C, C-microbial biomass, dehydrogenase activity and fertility levels respect NS. This may allow for an increase in the density and biomass of earthworms in the PS compared with the adjacent NS. The systems were characterized by abundance in juvenile individuals belonging to the Glossoscolecidae family; two different morphotypes of the genus Aicodrilus were registered. Earthworms found were located in an endo-anecic ecological category. Results suggest that, agricultural management in savannas by modification of physical and biochemical soil properties can decrease an important fraction of pedofauna, particularly their earthworm communities. However, earthworm populations and soil quality indicators can be restored after long-term protection.
author	López-Hernández,D Hernández,L Ojeda,A Quintero,E Caipo,S
author_facet	López-Hernández,D Hernández,L Ojeda,A Quintero,E Caipo,S
author_sort	López-Hernández,D
title	Impact of land protection in soil quality properties and in earthworm biomass in Venezuelan savannas
title_short	Impact of land protection in soil quality properties and in earthworm biomass in Venezuelan savannas
title_full	Impact of land protection in soil quality properties and in earthworm biomass in Venezuelan savannas
title_fullStr	Impact of land protection in soil quality properties and in earthworm biomass in Venezuelan savannas
title_full_unstemmed	Impact of land protection in soil quality properties and in earthworm biomass in Venezuelan savannas
title_sort	impact of land protection in soil quality properties and in earthworm biomass in venezuelan savannas
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000400013
work_keys_str_mv	AT lopezhernandezd impactoflandprotectioninsoilqualitypropertiesandinearthwormbiomassinvenezuelansavannas AT hernandezl impactoflandprotectioninsoilqualitypropertiesandinearthwormbiomassinvenezuelansavannas AT ojedaa impactoflandprotectioninsoilqualitypropertiesandinearthwormbiomassinvenezuelansavannas AT quinteroe impactoflandprotectioninsoilqualitypropertiesandinearthwormbiomassinvenezuelansavannas AT caipos impactoflandprotectioninsoilqualitypropertiesandinearthwormbiomassinvenezuelansavannas
_version_	1714206491760656384

Impact of land protection in soil quality properties and in earthworm biomass in Venezuelan savannas

Ejemplares similares