Coffee leaf litter decomposition: Short term home-field advantage in shaded coffee agro-ecosystems

Schmitt, Lauren; Perfecto, Ivette

doi:10.1016/j.apsoil.2020.103854

Cited by 11 publications

(7 citation statements)

References 44 publications

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“…Important among plant components that deter herbivory, however, are alkaloids that rapidly leach out of plant litter and terpenoids that are generally volatile [81]. A recent study [82] compared the decomposition of leaf litter from Coffea arabica and adjacent mixed forest in Costa Rica. They found a strong HFA effect in shortterm studies, while longer-term studies did not confirm the effect, and attributed the difference to the caffeine content of fresh litter.…”

Section: Discussionmentioning

confidence: 99%

Litter Decomposition in Wet Rubber and Fruit Agroforests: Below the Threshold for Tropical Peat Formation

et al. 2022

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Peatlands are shaped by slow litter decomposition, but threshold decomposition rates that allow peat formation remain unclear. Can agroforestry in the tropics be compatible with paludiculture that allows peat formation? We explored the determinants of litter decomposition in wet agroforests adjacent to tropical peatlands in Central Kalimantan (Indonesia) by litterbag studies (up to 16 weeks) with standing litter sources to estimate rate constants, characterize litter quality (especially lignin (L), polyphenolics (Pp) and nitrogen (N)), and monitor temperature and groundwater levels. In litter transfer experiments we tested for home-field advantage (HFA) effects between land cover types. Mean residence times around 85 weeks at 27 °C were associated with a high (L + Pp)/N ratio. However, in the crossover treatments, mean residence times varied from 30 to 180 weeks and strong HFA effects (up to 80% faster decomposition at “home”) were found when litter from other sources was tested in old fruit-based agroforests. HFA indicates a local decomposer community well-adapted to its normal litter diet. Litter residence times of around two years are below the apparent peat formation threshold. Maintaining wet agroforest conditions adjacent to peat domes supports peatland rewetting and restoration but does not contribute to on-site peat formation processes.

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Section: Discussionmentioning

confidence: 99%

Litter Decomposition in Wet Rubber and Fruit Agroforests: Below the Threshold for Tropical Peat Formation

et al. 2022

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“…Coffee is frequently planted under the canopy of shade tree species. On Finca Irlanda, the site of our study, shade trees of approximately 90 different species are planted, with the most common ones fixing nitrogen and belonging to the genus Inga (Schmitt and Perfecto, 2021). The second most common shade tree is Alchornea latifolia .…”

Section: Methodsmentioning

confidence: 99%

Complex interspecific interactions influence the interactions between pest control and pollination in coffee agroecosystems

Vaidya,

Dominguez Martine,

Vandermeer

2024

Preprint

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Ecosystem services mediated by biodiversity are essential for the well-being of human beings. While there is ample research on individual ecosystem services (such as pollination, nutrient cycling), there is now growing recognition to examine the interactions between multiple ecosystem services and their contribution to productivity in order to manage agroecosystems sustainably. In this study, we examined the interactions between pollination and pest control in coffee agroecosystems in Chiapas, Mexico. We tested how management of shade trees, particularly of nitrogen-fixing shade trees, at the farm scale mediated the outcome of the interactions between two ES. We found that there was no trade-off between pest control and pollination services despite the deterrence of pollinators by the dominant and aggressive ant species,Azteca sericeasur, which also controls the coffee berry borer, a major pest ofCoffea arabica. We found additive effects of pest-control and pollination on early fruit set and fruit weight of coffee plants. Proximity to nitrogen-fixing shade trees had indirect effects on pest-control via the reduction ofAzteca sericeasuractivity on the coffee bushes. These findings highlight that ecosystem services are a result of complex interspecific interactions and that biodiversity-friendly management practices can promote favorable outcomes of these interactions on coffee yield.

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“…“Home-field advantage” and the co-variation between plant control of nitrification and plant preference for ammonium or nitrate are two examples of the relevance of the phenotype-to-environment causal relation in this context. It has been hypothesised that some plant species could promote the decomposition of their own litter rather than that of other plant species or genotypes returning a ‘home-field advantage’; the empirical evidence for this phenomenon is partial (Ayres et al ., 2009; Schmitt and Perfecto, 2021). The co-variation between plant control of nitrification and plant preference for ammonium or nitrate was modelled against the hypotheses that plants with an ammonium preference would grow more biomass when inhibiting nitrification, and conversely that plants preferring nitrate would achieve higher biomass by stimulating nitrification (Ardichvili et al ., 2024).…”

Section: The Causal Arrow From Phenotype To Environment: Niche Constr...mentioning

confidence: 99%

The causal arrows ̶ from genotype, environment and management to plant phenotype ̶ are double headed

Sadras,

Hayman

2024

Preprint

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Unidirectional, cause-and-effect arrows are drawn from genotype (G), environment (E), and agronomic management (M) to the plant phenotype in crop stands. Here we focus on the overlooked bi-directionality of these arrows. The phenotype-to-genotype arrow includes increased mutation rates in stressed phenotypes, relative to basal rates. From a developmental viewpoint, the phenotype modulates gene expression returning multiple cellular phenotypes with a common genome. From a computational viewpoint, the phenotype influences gene expression in a process of downward causation. The phenotype-to-environment arrow is captured in the process of niche construction, which spans from persistent and global (e.g., photosynthetic archaea and cyanobacteria that emerged ~3.4 billion years ago created the oxygen-rich atmosphere that enabled the evolution of aerobic organisms and eukaryotes) to transient and local (e.g., lucerne tap root constructs soil biopores that influence the root phenotype of the following wheat crop). Research on crop rotations illustrates but is divorced of niche construction theory. The phenotype-to-management arrow involves, for example, a diseased crop that triggers fungicide treatments. Making explicit the bi-directionality of the arrows in the G X E X M model allows to connect crop improvement and agronomy with other, theoretically rich scientific fields.

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Coffee leaf litter decomposition: Short term home-field advantage in shaded coffee agro-ecosystems

Cited by 11 publications

References 44 publications

Litter Decomposition in Wet Rubber and Fruit Agroforests: Below the Threshold for Tropical Peat Formation

Litter Decomposition in Wet Rubber and Fruit Agroforests: Below the Threshold for Tropical Peat Formation

Complex interspecific interactions influence the interactions between pest control and pollination in coffee agroecosystems

The causal arrows ̶ from genotype, environment and management to plant phenotype ̶ are double headed

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