Dynamics of soil microarthropod populations affected by a combination of extreme climatic events in tropical home gardens of Kerala, India

Gopakumar, Lakshmi; Beggi, Francesca; Menta, Cristina; Kumar, N. K. Krishna; Puthumana, Jayesh

doi:10.1016/j.pedobi.2021.150719

Cited by 5 publications

(8 citation statements)

References 76 publications

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“…Our knowledge of the impacts of climate change on TAFS soils is based on most robust (LoE1a), robust (LoE2a to LoE2b) and least robust (LoE3) evidence. According to the most robust evidence, drought could negatively impact TAFS soils by reducing plant coverage and subsequently soil biota which are needed for soil nutrient cycles (Lakshmi et al, 2021). This is congruent with robust evidence which suggests that drought could reduce soil biota productivity in TAFS, as indicated by declining soil CO 2 efflux, although only under severe drought (van Straaten et al, 2010).…”

Section: Impacts Of Climate Change On Soils In Tafsmentioning

confidence: 62%

“…The model considers that provisioning ecosystem services from TAFS and the wellbeing of smallholders are mainly influenced by the tree-soilcrop interactions, which in turn are mediated by (i) the state of the trees, soils, and water in the biophysical system, and (ii) the decisions made in the livelihoods and farm management system (e.g., which trees and crops are planted). We expect the provisioning of ecosystem services and the wellbeing of farmers, including their cultural values, health, and income, to decline under climate change due to impaired tree size and growth (Feng and Li, 2007;Vincent et al, 2009;Tamayo-Chim et al, 2012), declining soil productivity and nutrient cycling (van Straaten et al, 2010;Russell and Kumar, 2019;Lakshmi et al, 2021), reduced water availability (Blaser et al, 2018), lower crop pollination (Arnold et al, 2018) and farmer's decision to change their farm management, which can influence biodiversity (Landreth and Saito, 2014). These biophysical and social impacts would influence tree-soil-crop interactions that underpin smallholder farmers' crop production and wellbeing.…”

Section: Future Research Prioritiesmentioning

confidence: 99%

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Impacts of climate change on tropical agroforestry systems: A systematic review for identifying future research priorities

Watts

Hutton

Guel

et al. 2022

Front. For. Glob. Change

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Climate change is expected to adversely affect the crop yields and food security for many smallholder farmers in the tropics unless adaptive measures are implemented. Agroforestry ecosystem services, such as micro-climate buffering, have received growing attention from the academic and policy communities for alleviating the negative impacts of climate change on smallholders. These benefits imply that agroforestry could offer a suitable measure for adaptation to climate change. However, whether agroforestry systems themselves succumb to the adverse effects of climate change is often less studied in the agroforestry literature. Consequently, less is known about how climate change will impact agroforests. We conducted a systematic review, which included an evidence quality assessment, to examine the impacts of climate change on tropical agroforestry systems (TAFS). Based primarily on studies undertaking biophysical approaches, we found that climate change negatively impacts TAFS by reducing tree growth, intensifying tree-crop resource competition and reducing crop yields. However, the impacts on smallholder farmers are less clear due to limited evidence in the relevant literature. We found that the evidence supporting our findings is mostly “robust”, although “least robust” strength evidence was also commonly found. We conclude that to improve understanding of how climate change could affect the performance of TAFS as a social ecological system, more interdisciplinary studies are required. Furthermore, to improve the quality of evidence in the research field, studies should explore using mountain elevation gradients for climate analog analysis to perform the most robust study designs. We provide an interdisciplinary conceptual model, which considers the interactions and feedbacks between TAFS components noted from our review to predict the response of ecosystem services provisioning and farmers' wellbeing to climate change, to guide interdisciplinary studies using climate analog analysis.

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Section: Impacts Of Climate Change On Soils In Tafsmentioning

confidence: 62%

Section: Future Research Prioritiesmentioning

confidence: 99%

Impacts of climate change on tropical agroforestry systems: A systematic review for identifying future research priorities

Watts

Hutton

Guel

et al. 2022

Front. For. Glob. Change

View full text Add to dashboard Cite

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“…In the study from Oman, the designing of better irrigation techniques uses the capillary barrier wick irrigation system in the HG (Al-Mayahi et al 2020 ). The second study from Kerala reported that diverse cultivated plant species in the HG support the quick recovery of crucial soil microarthropods, making HG a resilient agroecosystem in extreme meteorological events of drought and flood (Lakshmi et al 2021 ). In northeastern Thailand, the rain-fed HG systems required very little groundwater for irrigation (Cruz-Garcia and Struik 2015 ; Goenster et al 2014 ).…”

Section: Resultsmentioning

confidence: 99%

“…Women’s HG had a mean of 30.2 species whereas men’s HG had 15.9 species for 100 m 2 of cultivated area Medium Reyes-García et al ( 2010 ) Bangladesh After intervention women’s HG produce increased in plant protein by 171%, vitamin A by 189%, vitamin C by 290%, and iron by 284% Schreinemachers et al ( 2015 ) Mexico 85.16% of women are involved in inside community occupation which makes HG based livelihood important for them Castañeda-Navarrete ( 2021 ) Goal 6. Clean Water and Sanitation India HG agroecosystems were more resilient in extreme meteorological events NQE Lakshmi et al ( 2021 ) Thailand HG requires less irrigation Cruz-Garcia and Struik ( 2015 ) Goal 7. Affordable and Clean Energy Vietnam 32% of the household firewood requirements were fulfilled Medium Vlkova et al ( 2011 ) Bangladesh USD 71.9 earned from fuelwood produce annually Alam ( 2012 ) Thailand 20% of the household firewood requirement were fulfilled Cruz-Garcia and Struik ( 2015 ) Goal 8.…”

Section: Discussionmentioning

confidence: 99%

“…Similarly, HG role as sites harboring crucial medicinal plants and better mental health corresponds to a new dimension for HG research. Also, the species richness of HG has implications for resilience to climate disturbance (Lakshmi et al 2021 ). HG being the breeding ground for many of the experiments on plant variety selection and propagation (Kumar and Nair 2004 ) could help solve many of the pressing environmental and developmental paradigms issues.…”

Section: Use Of Hg In Covid-19 Times and Future Implications On Achie...mentioning

confidence: 99%

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Homegarden agroforestry systems in achievement of Sustainable Development Goals. A review

Sharma

Mina

Kumar

2022

Agron. Sustain. Dev.

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Homegarden, a type of agroforestry system, is one of the earliest thriving traditional food systems reported. Studying the contribution of homegardens in the context of Sustainable Development Goals (SDGs) is crucial when the COVID-19 pandemic has hindered the achievement of many of the crucial SDGs. In this review, we focused on 94 peer-reviewed papers on homegardens from 2010 to 2021 to interrelate them with the corresponding targets and indicators of each SDG. The SDGs were classified into five categories, each focusing on a specific aspect: Category 1 (SDGs 1–5, poverty dimension), Category 2 (SDGs 6–9, development infrastructures), Category 3 (SDGs 10–12, sustainable production and consumption), Category 4 (SDGs 13–15, green infrastructures), and Category 5 (SDGs 16–17, green institutions). The distribution of the 94 papers analyzed was 92%, 23%, 33%, 51%, and 50% in each of the SDG categories, respectively. Category 1 and SDG 2 were found to be most realized in the homegarden literature. Important observations were found that highlight homegardens’ probable use in providing food security, nutritional needs, health and wellness, preservation of agrobiodiversity, and enduring sustainability. Homegardens appear to be an important strategy for attaining the SDGs and can be accomplished with proper planning, in addition to taking into consideration how the traditional societies have sustained it for long. Supplementary Information The online version contains supplementary material available at 10.1007/s13593-022-00781-9.

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Urban soil quality deteriorates even with low heavy metal levels: An arthropod‐based multi‐indices approach

Tóth

Dombos

Hornung

2023

Ecological Applications

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Urban-induced habitat conversion drastically changes soil life in a variety of ways.Soil sealing, human disturbance, habitat fragmentation, industrial and vehicular pollution are the main causes of urban soil degradation. Soil arthropods, as one of the most abundant and diverse group of soil fauna, are involved in many soil processes that are of great importance in maintaining soil health and multifunctionality. Nevertheless, soil quality is still mainly characterized by physical, chemical, and microbiological parameters. Here, we assessed and compared the biological soil quality in woody (REF: reference forest, REM: remnant forest) and nonwoody (TURF: public turfgrass, and RUD: ruderal habitat) types of urban green spaces along a disturbance and management intensity gradient in the Budapest metropolitan area (Hungary), using community metrics and soil arthropod-based indicators. Vegetation cover and landscape characteristics of study sites were quantified through vegetation and urbanization indices, respectively. Basic soil properties, total and bioavailable concentrations of the main heavy metals (Cd, Co, Hg, Ni, Zn) were also measured. Acari, Collembola, and Hymenoptera (mainly Formicidae) were the most abundant groups. Litter-dweller taxa, particularly Protura, proved to be the most sensitive to urban disturbance. Representatives of Hemiptera, Diptera, Symphyla, and Pauropoda were common in low densities. The taxonomic diversity of soil arthropod assemblages in nonwoody and woody habitats was similar. Although the integrated faunal indices showed no differences among soil habitat types, they provided different responses and, consequently, different information. Our findings demonstrated that the biological quality and arthropod community structure of soils were strongly impacted by soil C/N and heavy metal contamination. We found that low and moderate levels of pollution have adverse effects on edaphic fauna, suggesting biological degradation of soils, even below pollution limits. Nevertheless, more disturbed urban green spaces have been shown to play a significant role in maintaining belowground biodiversity, thereby soil functions.

show abstract

Dynamics of soil microarthropod populations affected by a combination of extreme climatic events in tropical home gardens of Kerala, India

Cited by 5 publications

References 76 publications

Impacts of climate change on tropical agroforestry systems: A systematic review for identifying future research priorities

Impacts of climate change on tropical agroforestry systems: A systematic review for identifying future research priorities

Homegarden agroforestry systems in achievement of Sustainable Development Goals. A review

Urban soil quality deteriorates even with low heavy metal levels: An arthropod‐based multi‐indices approach

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