Long-term ecological trends of small secondary forests of the atlantic forest hotspot: A 30-year study case

Souza, Cléber Rodrigo de; Maia, Vinícius Andrade; Aguiar‐Campos, Natália de; Santos, Alisson Borges Miranda; Rodrigues, André Ferreira; Farrapo, Camila Laís; Gianasi, Fernanda M.; Paula, Gabriela Gomes Pires de; Fagundes, Nathalle Cristine Alencar; Silva, Wilder B.; Santos, Rubens Manoel dos

doi:10.1016/j.foreco.2021.119043

Cited by 23 publications

(8 citation statements)

References 46 publications

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“…Soil macro (N and P) and micronutrients (S, B, Cu, Fe, Mn, and Zn) showed a clear decreasing trend from LPSF/LSSF to TFC, i.e., from more preserved natural environments to less preserved ones. Soil nutrients also correlated to SOM (N: r = 0.50**, P: r = 0.43**, S: r = 0.37**, B: r = 0.65***, Cu: r = 0.44**, Fe: r = 0.27**, Mn: r = 0.70***, Zn: r = 0.32**), confirming previous studies showing SOM as the main source of such elements in tropical acidic and dystrophic pedosystems 9 , 10 , 27 , 46 , 47 .…”

Section: Discussionsupporting

confidence: 87%

Evaluating carbon stocks in soils of fragmented Brazilian Atlantic Forests (BAF) based on soil features and different methodologies

Guerrini,

da Silva,

Lozano Sivisaca

et al. 2024

Sci Rep

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Brazil’s Atlantic Forest (BAF) is a highly fragmented, strategic environmental and socio-economic region that represents the fourth biodiversity hotspot while also producing many commodities that are exported globally. Human disturbance plays a pivotal role as a driver of BAF’s soil dynamics and behaviors. The soils under Late Primary and Secondary Semideciduous Seasonal Forests (LPSF and LSSF) were characterized by high to moderate resilience, with improved chemical properties as human disturbance decreased. The Transitional Forest to Cerrado (TFC) had the worst soil conditions. Disturbed Primary and Secondary Semideciduous Seasonal Forests (DPSF and DSSF) represent a transitional stage between LPSF/LSSF and TFC. Accordingly, SOCs stocks increased from TFC << DPSF, DSSF < LPSF, LSSF. In BAF soils, to avoid unreliable data, SOCs measurements should be (i) conducted to at least 1 m soil depth and (ii) quantified with a CHN analyzer. Human disturbance strongly affected the positive feedback between vegetation succession, SOCs, and soil nutrition. Soil development decreased as human disturbance increased, thus negatively affecting SOCs. Soils in the BAF require a long time to recover after the end of human disturbance, thus suggesting that preservation strategies should be prioritized in remnant BAF fragments.

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Section: Discussionsupporting

confidence: 87%

Evaluating carbon stocks in soils of fragmented Brazilian Atlantic Forests (BAF) based on soil features and different methodologies

Guerrini,

da Silva,

Lozano Sivisaca

et al. 2024

Sci Rep

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“…The studied Atlantic forest remnant is in an advanced successional stage (Souza et al, 2021), agreeing with the considerations about forest development for water yield purposes (Teixeira et al, 2021). In this regard, this study aimed to: (i) assess the impact of droughts on the water balance components of a semi-deciduous Atlantic forest remnant; and (ii) track the forest's physiological responses to deal with severe droughts.…”

Section: Introductionsupporting

confidence: 85%

“…The drought severity spanning the study period can be classified according to the World Meteorological Organization (World Meteorological Organization -WMO, 2012) (Table 2). Although Souza et al (2021) assessed the drought severity in the study site, they did not evaluate its impacts on the water balance neither classified its severity. Further, they did not evaluate other drought scales such as the summer scale.…”

Section: Water Balance and Soil Moisture Dynamics Evaluationmentioning

confidence: 99%

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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“…Our results agree with Roder et al 26 , which demonstrated a decrease in SOM as human disturbance increases in fragmented BAF. Souza et al 40 demonstrated that BAF recovery results from a large increase in SOCs after stopping human disturbance. In the present study, we demonstrated that such an increase in SOM was particularly due to Riparian Forests (RFs), which contained a signi cantly higher amount of SOCs compared to Semideciduous Seasonal Forest (SFs) and the Transitional Forest to Cerrado (TFC).…”

Section: Soil Organic Carbon Stocks (Socs)mentioning

confidence: 99%

Evaluating carbon stocks in soils of fragmented Brazilian Atlantic Forests (BAF): How soil features and different methodologies influence its assessment

Guerrini,

Silva,

Sivisaca

et al. 2023

Preprint

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Brazil’s Atlantic Forest (BAF) is a highly fragmented, strategic environmental and socio-economic region that represents the fourth biodiversity hotspot while also producing many commodities that are exported globally. Human disturbance plays a pivotal role as a driver of BAF’s soil dynamics and behaviors. The soils below Riparian Forests (RFs) and some Semideciduous Primary Forests (SFs) were characterized by high to moderate resilience, with improved chemical properties as human disturbance decreased. The Transitional Forest to Cerrado (TFC) had the worst soil conditions. Accordingly, SOCs stocks and soil carbon credits (SCC) increased from TFC << SFs < RFs. In BAF soils, measurements of SOC quantity and behavior should be conducted to at least 1 m soil depth to avoid unreliable data. Furthermore, quantifying SOC with a CHN analyzer was more reliable than other methods. A positive feedback was observed between soil and BAF vegetation, with human disturbance strongly affecting it and related SOCs dynamics. Soil development decreased as human disturbance increased, thus negatively affecting SOC. Soils in the BAF require a long time to recover after the end of human disturbance, thus suggesting that preservation strategies should be prioritized in remnant BAF fragments.

show abstract

Long-term ecological trends of small secondary forests of the atlantic forest hotspot: A 30-year study case

Cited by 23 publications

References 46 publications

Evaluating carbon stocks in soils of fragmented Brazilian Atlantic Forests (BAF) based on soil features and different methodologies

Evaluating carbon stocks in soils of fragmented Brazilian Atlantic Forests (BAF) based on soil features and different methodologies

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

Evaluating carbon stocks in soils of fragmented Brazilian Atlantic Forests (BAF): How soil features and different methodologies influence its assessment

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