Multitrophic arthropod diversity mediates tree diversity effects on primary productivity

Li, Yi; Schmid, Bernhard; Schuldt, Andreas; Li, Shan; Wang, Ming‐Qiang; Fornoff, Felix; Staab, Michael; Guo, Pengfei; Anttonen, Perttu; Chesters, Douglas; Bruelheide, Helge; Zhu, Chao‐Dong; Ma, Keping; Liu, Xiaojuan

doi:10.1038/s41559-023-02049-1

Cited by 14 publications

(4 citation statements)

References 54 publications

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“…Alternatively, increased intraguild predation by birds in mixed stands (Staab & Schuldt, 2020) could have dampened the detection of tree diversity effects on arthropod predation, a phenomenon for which at least two studies have found support, one involving birds (Interian-Aguiñaga et al, 2022) and the other spiders (Schuldt & Staab, 2015). Our results thus warrant further experimental research characterizing bird (May-Uc et al, 2020;Nell et al, 2018) and arthropod (Li et al, 2023) communities to explore the contribution of predator foraging characteristics and intra-guild predation to tree diversity effects on top-down control of insect herbivores. Our assessment of climatic drivers showed that predation by birds but not by arthropods was positively associated with mean annual temperature.…”

Section: Discussionmentioning

confidence: 66%

“…diversity on the abundance and diversity of natural enemies (Ampoorter et al, 2020;Butz et al, 2023;Li et al, 2023;May-Uc et al, 2020;Nell et al, 2018;Penone et al, 2019;Stemmelen et al, 2022), but experimental tests involving assessments of predation pressure are still limited. The few available studies have reported mixed findings, with some supporting positive effects of tree diversity on predation (Leles et al, 2017;Nell et al, 2018), whereas others have reported no effects (Castagneyrol et al, 2017;Interian-Aguiñaga et al, 2022), or variable responses depending on the spatial scale or predator group studied (Muiruri et al, 2016;Yang et al, 2018).…”

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confidence: 99%

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Tree diversity enhances predation by birds but not by arthropods across climate gradients

Vázquez‐González,

Castagneyrol,

Muiruri

et al. 2024

Ecology Letters

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Tree diversity can promote both predator abundance and diversity. However, whether this translates into increased predation and top‐down control of herbivores across predator taxonomic groups and contrasting environmental conditions remains unresolved. We used a global network of tree diversity experiments (TreeDivNet) spread across three continents and three biomes to test the effects of tree species richness on predation across varying climatic conditions of temperature and precipitation. We recorded bird and arthropod predation attempts on plasticine caterpillars in monocultures and tree species mixtures. Both tree species richness and temperature increased predation by birds but not by arthropods. Furthermore, the effects of tree species richness on predation were consistent across the studied climatic gradient. Our findings provide evidence that tree diversity strengthens top‐down control of insect herbivores by birds, underscoring the need to implement conservation strategies that safeguard tree diversity to sustain ecosystem services provided by natural enemies in forests.

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Section: Discussionmentioning

confidence: 66%

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confidence: 99%

Tree diversity enhances predation by birds but not by arthropods across climate gradients

Vázquez‐González,

Castagneyrol,

Muiruri

et al. 2024

Ecology Letters

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“…The preservation of the abundance of Hymenopterans contributing to biological control, many of which are parasitoids, is essential within complex polyculture and rustic systems, as by promoting invertebrate abundance and richness through agroecological practices, populations of crop pest species can also increase, as we found with the populations of Coleoptera (which included potential pests such as individuals from the families Chrysomelidae, Ptinidae, and Scarabaeidae), Hemiptera (in the study area, we found individuals from families that are considered pests, such as Dictyopharidae, Fulgoridae, Pentatomidae, and the subfamily Triatominae), and Orthoptera [53,55,56]. Therefore, ensuring the presence of agents of biological control is key to maintain productivity and safeguard farmers' incomes, particularly as tree productivity has been found to increase with the increased abundance of parasitoids [57,58].…”

Section: The Effect Of Cropland Managementmentioning

confidence: 89%

Impact of Cropland Management on Invertebrate Richness and Abundance in Agroforestry Systems in Bali, Indonesia

Campera,

Chavez,

Humber

et al. 2024

Land

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The intensive management of cropland refers to a reduction in habitat complexity (i.e., shade tree cover, tree species richness, crop species richness) to gain more profits. This usually entails a decrease in biodiversity, but agroforestry systems have been shown to provide a solution to the need for profits while maintaining biodiversity and ecosystem services. Invertebrates are important bioindicators since they are not just affected by a decrease in habitat complexity; they are also key for the maintenance of ecosystems given their ecological roles. We aimed to understand how agricultural intensification impacted invertebrate abundance and richness in an agroforestry system in Bali, Indonesia. We set up 53 × 25 m2 plots and collected data via pitfall and pan traps. We linked those data to vegetation data (canopy cover, tree species richness, crop species richness), habitat type (rustic vs. polyculture), and productivity. Overall, we found that the abundance and richness of invertebrate taxa were positively influenced by increasing canopy cover and crop and tree species richness. This supports the habitat heterogeneity hypothesis, which indicates that increased habitat complexity promotes higher invertebrate species richness and abundance. The abundance and richness of certain invertebrate taxa, including agents of biocontrol, were shown to increase in plots with higher yields, thus solidifying the important role of invertebrate communities in the provision of ecosystem services. Harvesting crops from complex agroforestry systems ensures a sustainable income for local communities as well as habitats for invertebrates.

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“…With the frequent disturbances of human activities and abnormal changes in the global climate, biodiversity is currently being lost at an unprecedented rate worldwide, which results in the loss of multiple ecosystem functions and services in the global terrestrial ecosystems ( Lopez-Rojo et al., 2019 ; Li et al., 2023 ). Previous studies have mainly focused on the effects of biodiversity on individual ecosystem functions and ignored the multiple ecosystem functions provision, which displayed a biased and limited understanding of the effects of biodiversity on ecosystem functions ( Li et al., 2020a ; Luo et al., 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Effects of plant diversity, soil microbial diversity, and network complexity on ecosystem multifunctionality in a tropical rainforest

Chen,

Huang,

Lang

et al. 2023

Front. Plant Sci.

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IntroductionPlant diversity and soil microbial diversity are important driving factors in sustaining ecosystem multifunctionality (EMF) in terrestrial ecosystems. However, little is known about the relative importance of plant diversity, soil microbial diversity, and soil microbial network complexity to EMF in tropical rainforests.MethodsThis study took the tropical rainforest in Xishuangbanna, Yunnan Province, China as the research object, and quantified various ecosystem functions such as soil organic carbon stock, soil nutrient cycling, biomass production, and water regulation in the tropical rainforest to explore the relationship and effect of plant diversity, soil microbial diversity, soil microbial network complexity and EMF.ResultsOur results exhibited that EMF decreased with increasing liana species richness, soil fungal diversity, and soil fungal network complexity, which followed a trend of initially increasing and then decreasing with soil bacterial diversity while increasing with soil bacterial network complexity. Soil microbial diversity and plant diversity primarily affected soil nutrient cycling. Additionally, liana species richness had a significant negative effect on soil organic carbon stocks. The random forest model suggested that liana species richness, soil bacterial network complexity, and soil fungal network complexity indicated more relative importance in sustaining EMF. The structural equation model revealed that soil bacterial network complexity and tree species richness displayed the significantly positive effects on EMF, while liana species richness significantly affected EMF via negative pathway. We also observed that soil microbial diversity indirectly affected EMF through soil microbial network complexity. Soil bulk density had a significant and negative effect on liana species richness, thus indirectly influencing EMF. Simultaneously, we further found that liana species richness was the main indicator of sustaining EMF in a tropical rainforest, while soil bacterial diversity was the primary driving factor.DiscussionOur findings provide new insight into the relationship between biodiversity and EMF in a tropical rainforest ecosystem and the relative contribution of plant and soil microibal diversity to ecosystem function with increasing global climate change.

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Multitrophic arthropod diversity mediates tree diversity effects on primary productivity

Cited by 14 publications

References 54 publications

Tree diversity enhances predation by birds but not by arthropods across climate gradients

Tree diversity enhances predation by birds but not by arthropods across climate gradients

Impact of Cropland Management on Invertebrate Richness and Abundance in Agroforestry Systems in Bali, Indonesia

Effects of plant diversity, soil microbial diversity, and network complexity on ecosystem multifunctionality in a tropical rainforest

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