Results 11 to 20 of about 246,374 (311)

Non-microbial methane emissions from tropical rainforest soils under different conditions.

open access: yesPLoS ONE, 2021
Non-microbial methane (NM-CH4), emissions from soil might play a significant role in carbon cycling and global climate change. However, the production mechanisms and emission potential of soil NM-CH4 from tropical rainforest remain highly uncertain.
Gaohui Jia   +10 more
doaj   +2 more sources

Analysis of the influence of tropical soil classification methods on railway subgrades according to repeated load triaxial (RLT) and light weight deflectometer (LWD) tests

open access: yesCase Studies in Construction Materials, 2022
Recently, non-destructive in-situ tests have emerged that can predict the resilient modulus (MR) of materials that make up railway sidewalk layers in an agile and low-cost manner. These are in contrast to laboratory tests that require more infrastructure
Fábio da Silva Martino Fonte   +4 more
doaj   +1 more source

eDNA extraction protocol for metagenomic studies in tropical soils

open access: yesBioTechniques, 2021
The lack of knowledge about biological communities residing in soils, especially those in tropical regions, represents a constraint to management practices to take advantage of the ecological services provided by soil microbiota to agroecosystems. One of
Fabián Echeverría-Beirute   +4 more
doaj   +1 more source

Genesis of sandstone-derived soils in the Cerrado of the Piauí State, Brazil

open access: yesRevista Ambiente & Água, 2019
This study characterized the morphological, physical and chemical attributes of sandstone-derived soils at the Cerrado of the Piauí State, Brazil, in order to identify evolutionary standards.
Diego Ferreira de Souza   +5 more
doaj   +1 more source

Modeling of P-Loss Risk and Nutrition for Mango (Mangifera indica L.) in Sandy Calcareous Soils: A 4-Years Field Trial for Sustainable P Management

open access: yesHorticulturae, 2022
The continuous addition of phosphorus (P) fertilizers above plant requirements increases P loss risks, especially if such fertilization practices continue long-term.
Jiyue Wang   +10 more
doaj   +1 more source

Critical evaluation of methods for determining total organic phosphorus in tropical soils [PDF]

open access: yes, 1990
The determination of total organic phosphorus (TOP) in soils presents several methodological problems, particularly on strongly weathered and tropical soils.
Condron, Leo M.   +3 more
core   +1 more source

Dissipation of DvSnf7 Double-Stranded RNA in Brazilian Soils

open access: yesAgricultural & Environmental Letters, 2019
Characterizing the environmental fate of DvSnf7 double-stranded RNA (dsRNA) produced by MON 87411 maize ( L.) in Brazilian soils is a critical component to a comprehensive environmental risk assessment.
Marcela Emanuele Scarso Joaquim   +6 more
doaj   +1 more source

Detailed regional predictions of N2O and NO emissions from a tropical highland rainforest [Discussion paper] [PDF]

open access: yes, 2013
Tropical forest soils are a significant source for the greenhouse gas N2O as well as for NO, a precursor of tropospheric ozone. However, current estimates are uncertain due to the limited number of field measurements.
Boeckx, Pascal   +9 more
core   +1 more source

Assessment of Trace Element Contents in Soils and Water from Cerrado Wetlands, Triângulo Mineiro Region

open access: yesRevista Brasileira de Ciência do Solo, 2019
In the Brazilian Cerrado biome, there are wetlands locally known as “Veredas”, which are swampy plains between hills and rivers. Since the 1970’s, the Cerrado biome has been gradually converted to livestock, crop, or forestry production.
Bruno Teixeira Ribeiro   +6 more
doaj   +1 more source

Fine root dynamics and trace gas fluxes in two lowland tropical forest soils [PDF]

open access: yes, 2005
Fine root dynamics have the potential to contribute significantly to ecosystem-scale biogeochemical cycling, including the production and emission of greenhouse gases.
Crill, Patrick M.   +7 more
core   +2 more sources

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