Anthropogenic degradation alter surface soil biogeochemical pools and microbial communities in an Andean temperate forest

Primer Autor
Aburto, Felipe
Co-autores
Atenas Navarrete, Alejandro
Gonzalez-Rocha, Gerardo
Merino Guzman, Carolina
Schmidt, Radomir
Scow, Kate
Título
Anthropogenic degradation alter surface soil biogeochemical pools and microbial communities in an Andean temperate forest
Editorial
ELSEVIER
Revista
SCIENCE OF THE TOTAL ENVIRONMENT
Lenguaje
en
Resumen
Soil microbial communities regulate a myriad of critical biogeochemical functions in forest ecosystems. Anthropogenic disturbances in natural forests could drive major shifts in plant and microbial communities resulting in substantial bio-geochemical alterations. We evaluated the effect of anthropogenic disturbances in the soils of Andean temperate for-ests with different levels of degradation: i) mature forest (MF), ii) secondary forest (SF), iii) degraded forest (DF), and iv) deforested site converted into a prairie (DP). We quantified total soil carbon, nitrogen and phosphorous (TC, TN, and TP), and available nutrient stocks. The soil microbial community structure (i.e., composition, diversity, and abun-dance) was assessed under each condition from amplicon sequence variants (ASVs) obtained via NGS-Illumina se-quencing and subsequent microbiome analysis. There were no significant differences in TC, TN, and TP across the forested states (MF, SF, DF). The deforested site condition presented significantly higher soil TC, TN, and TP and the lowest C:N, C:P, and N:P ratios. The DP soil microbiome was significantly more diverse in bacteria (D ' = 0.47 +/- 0.04), and fungi (H ' = 5.11 +/- 0.33). The bacterial microbiome was dominated by Proteobacteria (45.35 +/- 0.89 %), Acidobacteria (20.73 +/- 1.48 %), Actinobacteria (12.59 +/- 0.34 %), and Bacteroidetes (7.32 +/- 0.36 %) phyla in all sites. The soil fungal community was dominated by the phyla Ascomycota (42.11 +/- 0.95 %), Mortierellomycota (28.74 +/- 2.25 %), Basidiomycota (24.61 +/- 0.52), and Mucoromycota (2.06 +/- 0.43 %). Yet, there were significant differences at the genus level across conditions. Forest to prairie conversion facilitated the introduction of exotic bac-terial and fungal taxa associated with agricultural activities and livestock grazing (similar to 50 % of DP core microbiome com-posed of unique ASVs). For example, the ammonia-oxidizing bacteria community emerged as a dominant group in the DP soils, along with a reduction in the ectomycorrhizal fungi community. The surface soil microbial community was surprisingly resistant to forest degradation and did not show a clear succession along the degradation gradient, but it was strongly altered after deforestation.
Tipo de Recurso
artículo original
doi
10.1016/j.scitotenv.2022.158508
Formato Recurso
PDF
Palabras Claves
Soil microbiome
Soil carbon stocks
soil nutrients
Forest disturbance
Land -use change
Deforestation
BACTERIAL COMMUNITY
DIVERSITY
FUNGAL
BIODIVERSITY
INDICATORS
MANAGEMENT
HABITAT
HOTSPOT
LITTER
Ubicación del archivo
http://dx.doi.org/10.1016/j.scitotenv.2022.158508
Categoría OCDE
Ciencias Ambientales
Materias
Microbioma del suelo
Reservas de carbono del suelo
nutrientes del suelo
Perturbación forestal
Cambio de uso de la tierra
Deforestación
COMUNIDAD BACTERIANA
DIVERSIDAD
HONGOS
BIODIVERSIDAD
INDICADORES
GESTIÓN
HÁBITAT
PUNTO CALIENTE
BASURA
Disciplinas de la OCDE
Ciencias del suelo
Ecología
Microbiología
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version publicada
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hibrida
verde
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Id de Web of Science
WOS:000862764700011
Título de la cita (Recomendado-único)
Anthropogenic degradation alter surface soil biogeochemical pools and microbial communities in an Andean temperate forest
Identificador del recurso (Mandatado-único)
artículo original
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