Time-stability of soil water content (SWC) in an Atlantic Forest - Latosol site

Junqueira, José A.; Mello, Carlos Rogério de; Owens, Phillip R.; Mello, José Márcio de; Curi, Nilton; Alves, Geovane Junqueira

doi:10.1016/j.geoderma.2016.10.034

Cited by 26 publications

(20 citation statements)

References 47 publications

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“…This study was carried out in a semi-deciduous seasonal Atlantic forest remnant of 6.35 ha, located on the coordinates 44°58'15'' W and 21°13'42'' S in Minas Gerais state, Brazil. The soil of the studied site is an Oxidic Latosol, characterized by great porosity and high soil saturated hydraulic conductivity (Junqueira Junior et al, 2017). The phenological classification of the forest is "semi-deciduous forest" because up to 50% of the species lose their leaves during the dry season (Terra et al, 2018).…”

Section: Materials and Methods Study Area And Data Collectionsmentioning

confidence: 99%

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Water balance of an Atlantic forest remnant under a prolonged drought period

et al. 2021

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Since prolonged droughts have impacted Atlantic forests in Southeastern Brazil, further investigations to understand the effects of such stressful conditions in their hydrological behavior are required. This study aimed to assess the changes in the water balance of a semi-deciduous Atlantic forest remnant and how the forest responds to droughts. The Standardized Precipitation-Evapotranspiration Index was applied to identify droughts (from 1961 to 2019) and their severity in both the hydrological year and summer scales. Drought impacts on actual evapotranspiration, potential percolation, and soil water storage were assessed using Hydrus-1D, having net precipitation and potential evapotranspiration as inputs. Error analyses (< 10%) confirmed Hydrus-1D suitability for simulating soil moisture. Uncertainties regarding the soil saturated hydraulic conductivity are due to preferential flows, which are not accounted for in Richards’ equation. Drought intensification changed forest hydrology and triggered physiological responses to deal with it. Semi-deciduous Atlantic forests are adapted to dry conditions because of the existence of dry-affiliated species and the activation of physiological mechanisms. However, such adaptations responded differently regarding the drought scales. The intensification of summer droughts increased evapotranspiration and decreased the potential percolation. Leaf shedding changed the canopy structure in a two-year time lag as a response to the intensification of hydrological year droughts. Changes in forest hydrology are sudden and trigger physiological responses, such as leaf shedding, in a delayed process after droughts take place.

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Section: Materials and Methods Study Area And Data Collectionsmentioning

confidence: 99%

“…Drought effects on both rainfall and evapotranspiration are accounted for in Hydrus' framework. In this study, we relied on the one-dimension version (Hydrus-1D) since most of the water movement is likely to occur in the vertical direction due to the high drainage capacity of the Oxidic Latosol (Junqueira Junior et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Water balance of an Atlantic forest remnant under a prolonged drought period

et al. 2021

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“…There are two marked seasons: April to September, the 'dry period', and October to March, the 'wet period' when 85% of the rainfall occurs. The mean annual temperature is approximately 19.4°C, ranging from 14.4°C (in July) to 22.5°C (in January) (Junqueira Junior et al, 2017). The Köppen-type climate of the studied region is Cwa, according to the last normal climatology (1981 -2010) (INMET, 2018).…”

Section: Study Areas and Data Collectionmentioning

confidence: 98%

“…The native forest is a 5.83 ha Atlantic Forest remnant (AFR) located at 21º13′40″S and 44º57′50″W (Figure 1). The vegetation is classified as Semideciduous Montane Forest (IBGE, 2012), which lies on a dystrophic Red Latosol (Rhodic Hapludox) (Junqueira Junior et al, 2017). The relief is gently undulated, with slopes varying from 5 to 15% and an elevation of 920 m. a.s.l.…”

Section: Study Areas and Data Collectionmentioning

confidence: 99%

Rainfall Water Quality Under Different Forest Stands

Marques

Terra

Mantovani

et al. 2019

CERNE

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“…). The relief is gently undulated and the soil classi ed as Dystrophic Red Latosol (Rhodic Hapludox) (JunqueiraJunior et al 2017). The Köppen-type climate of the studied region is Cwa with well-de ned seasons, characterized by rainfall concentration in the summer (December to March) (Junqueira Junior et al 2019).…”

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Spatial and temporal patterns in Carbon and Nitrogen inputs by net precipitation in Atlantic Forest, Brazil

Mantovani

Terra

Mello

et al. 2020

Preprint

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Background Forests are important for governing local and regional water and nutrient dynamics. Thus, studying precipitation-forest interactions is essential to understand the consequences of land-use and climate change for the hydrological and nutrient cycles. This study aimed to quantify the contribution of the net precipitation on Atlantic Forest’s total carbon (C) and total nitrogen (N), identifying potential differences between these chemistry inputs regarding temporal (seasonal and monthly) and spatial scales.Results The rainfall was enriched after crossing the forest canopy. For gross rainfall and net precipitation, respectively, statistical differences were found between annual inputs of carbon (104.13 kg ha− 1 and 193.18 kg ha− 1) and nitrogen (16.81 kg ha− 1 and 36.95 kg ha− 1). Moreover, there was a seasonal variability in the inputs of C and N since 75% occurred in the wet season. November and December concentrated the largest nutrient contribution throughout the year. The spatial variability of C and N was higher in the wet season. Overall, the spatial patterns revealed that the same locations had the highest inputs regardless of the analyzed period.Conclusion Our findings reinforce that forests promote rainfall enrichment with C and N. The forest-rainfall interactions provide constant input of these nutrients, especially in the wet season, being fundamental for maintenance of ecological processes. Despite the nutrient inputs presented some variability, this study provides useful information on the changes of C and N inputs after forest-rainfall interactions. Thus, it can support the estimation of atmospheric deposition and advance the knowledge of the contribution of the leaching and absorption processes by canopies.

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Time-stability of soil water content (SWC) in an Atlantic Forest - Latosol site

Cited by 26 publications

References 47 publications

Water balance of an Atlantic forest remnant under a prolonged drought period

Water balance of an Atlantic forest remnant under a prolonged drought period

Rainfall Water Quality Under Different Forest Stands

Spatial and temporal patterns in Carbon and Nitrogen inputs by net precipitation in Atlantic Forest, Brazil

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