Actividad biológica del suelo de bosque templado en un transecto altitudinal, Parque Nacional Conguillío (38º S), Chile

Lillo, A.; Ramírez, Hipólita; Reyes, Francisco; Ojeda, Nélson; Alvear, Marysol

doi:10.4067/s0717-92002011000100006

Cited by 11 publications

(12 citation statements)

References 35 publications

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“…In our case, a higher leaf litter contribution can accumulate in the soil in the ecosystem with the largest tree cover (PC) compared to the other two smaller covers (PO and OP). Lillo et al (2011) found similar results when comparing different tree communities in southern Chile and determined that the higher plant cover (in both tree and shrub strata) allows higher SOM accumulation. The tendency presented by our data is that higher SOC was recorded at the 0-5 cm soil depth (Table 3); SOC is usually closely related to larger OM content accumulated in the upper layer of the soil.…”

Section: Soc (%)supporting

confidence: 57%

Soil quality indicators in an Andisol under different tree covers in disturbed Nothofagus forests

Alfaro

Dubé²,

Zagal³

2018

Chil. j. agric. res.

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Non-systemic logging, cattle browsing and grazing with the site natural vegetation can modify tree covers in native forests and alter the quantity and quality of organic matter entering the soil and hence its overall quality. The objective of this study was to evaluate the effect of modifying tree covers by uncontrolled logging and grazing processes on soil quality, in a mature and unmanaged roble (Nothofagus obliqua (Mirb.) Blume) forest. Soil quality was evaluated under partly-closed (PC), partly-open (PO), and open (OP) forest covers, and two soil depths. The indicators used were soil organic C (SOC), potential net N mineralization (N-min), and nitrification (N-NO3), soil microbial respiration (SMR), microbial biomass C (MBC), soil aggregates, and light fraction (LF). At 0-5 cm soil depth SMR and MBC in PC cover was approximately 12% higher than in PO and OP covers. For the same soil depth N-min in PC cover was 68% and 95% higher than in PO and OP covers, respectively; and for N-NO3 PC cover was 45% higher than PO cover. OP tree cover presented a negative N-NO3 (immobilization). Dry weight for LF fraction in OP cover (labile OM) was 90% and 67% lower respect PC and PO covers, respectively (P < 0.05). The soil quality and the activity of its microbial processes were affected by alteration of tree cover, as well by the anthropic action of logging and extensive grazing, the soil in OP cover was the most affected.

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Section: Soc (%)supporting

confidence: 57%

Soil quality indicators in an Andisol under different tree covers in disturbed Nothofagus forests

Alfaro

Dubé²,

Zagal³

2018

Chil. j. agric. res.

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“…The third soil was derived from basaltic-andesitic recent volcanic ash from Conguillío National Park in the Andes under Araucaria araucana and Nothofagus spp. forests [ 38 ]. The fourth soil was a loamy clay Ultisol derived from metamorphic mica-schist materials with illite-kaolinite as dominant clays sampled in Alerce Costero National Park in the Coastal range under Nothofagus spp.…”

Section: Methodsmentioning

confidence: 99%

Soil Redox Controls CO2, CH4 and N2O Efflux from White-Rot Fungi in Temperate Forest Ecosystems

Merino

Jofré

Matus

2021

JoF

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Microaerophilic white-rot fungi (WRF) are impacted by oxygen depletion because of fluctuating redox occurrence in southern temperate forest soils of Chile (1500–5000 mm year−1). How these conditions influence WRF survival has been scarcely examined. We explored the contributions of WRF to greenhouse gas (GHG) emissions of N2O and CH4 and soil organic C oxidation (CO2) in five sterilized and inoculated forest soils derived from various parent materials and climates. The soil was incubated for 20 days following (i) oxic, (ii) anoxic, and (iii) fluctuating redox conditions. Fungi contributed to 45% of the total GHG under redox fluctuating conditions, including the contribution of bacteria, while the opposite (26%) was valid for oxic treatment. On average, the highest gas emission (62%) was N2O for WRF under redox treatment, followed by anoxic (22%) and oxic (16%) treatments, while CO2 and CH4 emissions followed oxic > redox > anoxic. These data suggest that indigenous microbial WRF communities are well adapted to fluctuating redox milieu with a significant release of GHG emissions in humid temperate forests of the southern cone.

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“…Unfortunately, to the best of our knowledge, for Antarctic soils there are no studies evaluating the influence of soil microclimate conditions on FD hydrolysis. However, for temperate ecosystems it has been reported that suitable conditions of soil temperature and moisture increased the levels of this biochemical parameter (Sidari et al, 2008;Lillo et al, 2011;Reyes et al, 2011).…”

Section: Alkaline Phosphatase and Microbial Activity And Their Relatimentioning

confidence: 99%

Do P Cycling Patterns Differ Between Ice-Free Areas and Glacial Boundaries in the Maritime Antarctic Region?

Chacón

Ascanio

Herrera

et al. 2013

Arctic, Antarctic, and Alpine Research

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Actividad biológica del suelo de bosque templado en un transecto altitudinal, Parque Nacional Conguillío (38º S), Chile

Cited by 11 publications

References 35 publications

Soil quality indicators in an Andisol under different tree covers in disturbed Nothofagus forests

Soil quality indicators in an Andisol under different tree covers in disturbed Nothofagus forests

Soil Redox Controls CO2, CH4 and N2O Efflux from White-Rot Fungi in Temperate Forest Ecosystems

Do P Cycling Patterns Differ Between Ice-Free Areas and Glacial Boundaries in the Maritime Antarctic Region?

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