Precipitation Controls on Soil Biogeochemical and Microbial Community Composition in Rainfed Agricultural Systems in Tropical Drylands
The current and expected expansion of agriculture in the drylands of Mexico, together with the decrease in precipitation occurring in the country, likely affect ecosystem processes and will bring great challenges for the suitability of rainfed agriculture for smallholder farmers. Here, we assessed m...
Guardado en:
Autores principales: | , , , , , , , , , , , |
---|---|
Formato: | article |
Lenguaje: | EN |
Publicado: |
MDPI AG
2021
|
Materias: | |
Acceso en línea: | https://doaj.org/article/c2dafc244471451c840d462844295da3 |
Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
id |
oai:doaj.org-article:c2dafc244471451c840d462844295da3 |
---|---|
record_format |
dspace |
spelling |
oai:doaj.org-article:c2dafc244471451c840d462844295da32021-11-11T19:33:04ZPrecipitation Controls on Soil Biogeochemical and Microbial Community Composition in Rainfed Agricultural Systems in Tropical Drylands10.3390/su1321118482071-1050https://doaj.org/article/c2dafc244471451c840d462844295da32021-10-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/21/11848https://doaj.org/toc/2071-1050The current and expected expansion of agriculture in the drylands of Mexico, together with the decrease in precipitation occurring in the country, likely affect ecosystem processes and will bring great challenges for the suitability of rainfed agriculture for smallholder farmers. Here, we assessed metrics of the soil C, N, and P cycles, as well as soil microbial diversity, under rainfed maize and common bean cropping in arid and semiarid regions of central Mexico. The soil enzymatic vector angles of cultivated plots in both regions were above 45°, suggesting P limitation for microbial growth and crop productivity. Although changes were not observed in the intensity of this P-limitation with aridity, we found a negative effect of drought increase on the concentration of soil organic C and total N, with consequences for the C, N, and P balance in soils. Increasing aridity leads to the homogenization of microbial diversity. Considering a scenario in which decreases in mean annual precipitation would uncouple the biogeochemical cycles and homogenize soil biodiversity, the ecological implications could be an increase in the vulnerability of agricultural ecosystems to drought, with negative consequences for the suitability of rainfed agriculture in the drylands of central Mexico.Thalita F. AbbruzziniMorena AvitiaKaren Carrasco-EspinosaVíctor PeñaAlberto Barrón-SandovalUlises Isaac Salazar CabreraRocío Cruz-OrtegaMariana BenítezAna E. EscalanteJulieta A. RosellAna WegierJulio CampoMDPI AGarticleclimate changedroughtenzyme stoichiometrysmallholder farmingsoil biogeochemistryEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 11848, p 11848 (2021) |
institution |
DOAJ |
collection |
DOAJ |
language |
EN |
topic |
climate change drought enzyme stoichiometry smallholder farming soil biogeochemistry Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
spellingShingle |
climate change drought enzyme stoichiometry smallholder farming soil biogeochemistry Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Thalita F. Abbruzzini Morena Avitia Karen Carrasco-Espinosa Víctor Peña Alberto Barrón-Sandoval Ulises Isaac Salazar Cabrera Rocío Cruz-Ortega Mariana Benítez Ana E. Escalante Julieta A. Rosell Ana Wegier Julio Campo Precipitation Controls on Soil Biogeochemical and Microbial Community Composition in Rainfed Agricultural Systems in Tropical Drylands |
description |
The current and expected expansion of agriculture in the drylands of Mexico, together with the decrease in precipitation occurring in the country, likely affect ecosystem processes and will bring great challenges for the suitability of rainfed agriculture for smallholder farmers. Here, we assessed metrics of the soil C, N, and P cycles, as well as soil microbial diversity, under rainfed maize and common bean cropping in arid and semiarid regions of central Mexico. The soil enzymatic vector angles of cultivated plots in both regions were above 45°, suggesting P limitation for microbial growth and crop productivity. Although changes were not observed in the intensity of this P-limitation with aridity, we found a negative effect of drought increase on the concentration of soil organic C and total N, with consequences for the C, N, and P balance in soils. Increasing aridity leads to the homogenization of microbial diversity. Considering a scenario in which decreases in mean annual precipitation would uncouple the biogeochemical cycles and homogenize soil biodiversity, the ecological implications could be an increase in the vulnerability of agricultural ecosystems to drought, with negative consequences for the suitability of rainfed agriculture in the drylands of central Mexico. |
format |
article |
author |
Thalita F. Abbruzzini Morena Avitia Karen Carrasco-Espinosa Víctor Peña Alberto Barrón-Sandoval Ulises Isaac Salazar Cabrera Rocío Cruz-Ortega Mariana Benítez Ana E. Escalante Julieta A. Rosell Ana Wegier Julio Campo |
author_facet |
Thalita F. Abbruzzini Morena Avitia Karen Carrasco-Espinosa Víctor Peña Alberto Barrón-Sandoval Ulises Isaac Salazar Cabrera Rocío Cruz-Ortega Mariana Benítez Ana E. Escalante Julieta A. Rosell Ana Wegier Julio Campo |
author_sort |
Thalita F. Abbruzzini |
title |
Precipitation Controls on Soil Biogeochemical and Microbial Community Composition in Rainfed Agricultural Systems in Tropical Drylands |
title_short |
Precipitation Controls on Soil Biogeochemical and Microbial Community Composition in Rainfed Agricultural Systems in Tropical Drylands |
title_full |
Precipitation Controls on Soil Biogeochemical and Microbial Community Composition in Rainfed Agricultural Systems in Tropical Drylands |
title_fullStr |
Precipitation Controls on Soil Biogeochemical and Microbial Community Composition in Rainfed Agricultural Systems in Tropical Drylands |
title_full_unstemmed |
Precipitation Controls on Soil Biogeochemical and Microbial Community Composition in Rainfed Agricultural Systems in Tropical Drylands |
title_sort |
precipitation controls on soil biogeochemical and microbial community composition in rainfed agricultural systems in tropical drylands |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doaj.org/article/c2dafc244471451c840d462844295da3 |
work_keys_str_mv |
AT thalitafabbruzzini precipitationcontrolsonsoilbiogeochemicalandmicrobialcommunitycompositioninrainfedagriculturalsystemsintropicaldrylands AT morenaavitia precipitationcontrolsonsoilbiogeochemicalandmicrobialcommunitycompositioninrainfedagriculturalsystemsintropicaldrylands AT karencarrascoespinosa precipitationcontrolsonsoilbiogeochemicalandmicrobialcommunitycompositioninrainfedagriculturalsystemsintropicaldrylands AT victorpena precipitationcontrolsonsoilbiogeochemicalandmicrobialcommunitycompositioninrainfedagriculturalsystemsintropicaldrylands AT albertobarronsandoval precipitationcontrolsonsoilbiogeochemicalandmicrobialcommunitycompositioninrainfedagriculturalsystemsintropicaldrylands AT ulisesisaacsalazarcabrera precipitationcontrolsonsoilbiogeochemicalandmicrobialcommunitycompositioninrainfedagriculturalsystemsintropicaldrylands AT rociocruzortega precipitationcontrolsonsoilbiogeochemicalandmicrobialcommunitycompositioninrainfedagriculturalsystemsintropicaldrylands AT marianabenitez precipitationcontrolsonsoilbiogeochemicalandmicrobialcommunitycompositioninrainfedagriculturalsystemsintropicaldrylands AT anaeescalante precipitationcontrolsonsoilbiogeochemicalandmicrobialcommunitycompositioninrainfedagriculturalsystemsintropicaldrylands AT julietaarosell precipitationcontrolsonsoilbiogeochemicalandmicrobialcommunitycompositioninrainfedagriculturalsystemsintropicaldrylands AT anawegier precipitationcontrolsonsoilbiogeochemicalandmicrobialcommunitycompositioninrainfedagriculturalsystemsintropicaldrylands AT juliocampo precipitationcontrolsonsoilbiogeochemicalandmicrobialcommunitycompositioninrainfedagriculturalsystemsintropicaldrylands |
_version_ |
1718431491458859008 |