The association of leaf lifespan and background insect herbivory at the interspecific level

Zhang, Shuang; Zhang, Yuxin; Ma, Keping

doi:10.1002/ecy.1649

Cited by 27 publications

(28 citation statements)

References 52 publications

(159 reference statements)

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“…In terms of emergent community properties, we found that species diversity and species evenness were higher for trees with relatively early autumn phenology. In addition, previous studies have demonstrated a hump-shaped relationship of both herbivory and leaf miner abundance with leaf life span -where fully deciduous and evergreen trees tend to be less infested (Pearse & Karban, 2013;Zhang et al, 2017). ), which dominated the community on 62 out of 127 oak trees.…”

Section: The Impact Of Oak Tree Autumn Phenology On the Insect Herbivmentioning

confidence: 93%

“…Similarly, Mopper and Simberloff (1995) showed that early leaf abscission was a major source of late-instar mortality in the leaf miner Stilbosis quadricustatella (Lepidoptera: Cosmopterigidae). In addition, previous studies have demonstrated a hump-shaped relationship of both herbivory and leaf miner abundance with leaf life span -where fully deciduous and evergreen trees tend to be less infested (Pearse & Karban, 2013;Zhang et al, 2017). This implies that, for some herbivores, the decision of which tree to oviposit on -a tree with early versus late autumn phenology -could be of great importance for offspring survival.…”

Section: The Impact Of Oak Tree Autumn Phenology On the Insect Herbivmentioning

confidence: 99%

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The forgotten season: the impact of autumn phenology on a specialist insect herbivore community on oak

Ekholm

Tack

Bolmgren

et al. 2019

Ecological Entomology

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1. Variation in spring phenology -like tree budburst -affects the structure of insect communities, but impacts of autumn phenology have been neglected. Many plant species have recently delayed their autumn phenology, and the timing of leaf senescence may be important for herbivorous insects.2. This study explored how an insect herbivore community associated with Quercus robur is influenced by variation in autumn phenology. For this, schools were asked to record, across the range of oak in Sweden, the autumn phenology of oaks and to conduct a survey of the insect community.3. To tease apart the relative impacts of climate from that of tree phenology, regional tree phenology was first modelled as a function of regional climate, and the tree-specific deviation from this relationship was then used as the metric of relative tree-specific phenology.4. At the regional scale, a warmer climate postponed oak leaf senescence. This was also reflected in the insect herbivore community: six out of 15 taxa occurred at a higher incidence and five out of 18 taxa were more abundant, in locations with a warmer climate. Similarly, taxonomic richness and herbivory were higher in warmer locations.5. Trees with a relatively late autumn phenology had higher abundances of leaf miners (Phyllonorycter spp.). This caused lower community diversity and evenness on trees with later autumn phenology.6. The findings of the present study illustrate that both regional climate-driven patterns and local variation in oak autumn phenology contribute to shaping the insect herbivore community. Community patterns may thus shift with a changing climate.

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Section: The Impact Of Oak Tree Autumn Phenology On the Insect Herbivmentioning

confidence: 93%

Section: The Impact Of Oak Tree Autumn Phenology On the Insect Herbivmentioning

confidence: 99%

The forgotten season: the impact of autumn phenology on a specialist insect herbivore community on oak

Ekholm

Tack

Bolmgren

et al. 2019

Ecological Entomology

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“…Temperature may also influence herbivory and herbivore abundance by influencing invertebrates' metabolic activities and per capita consumption rates (Ehnes, Rall, & Brose, ; Vucic‐Pestic, Ehnes, Rall, & Brose, ). Plant functional traits (leaf traits) such as specific leaf area, life span (Zhang, Zhang, & Ma, ), concentrations of leaf carbon, nitrogen and phosphorus as well as the ratios of these elements determine leaf palatability, influence foraging decisions by herbivores and thus regulate susceptibility of plants to herbivory (Behmer, ; Leingärtner, Krauss, & Steffan‐Dewenter, ; Paul et al, ; Schädler, Jung, Auge, & Brandl, ). Furthermore, climate‐ and land use‐driven changes in the relative importance of top‐down control by natural enemies to bottom‐up control might affect invertebrate herbivore communities and thus herbivory (Martin, Reineking, Seo, & Steffan‐Dewenter, ; Péré, Jactel, & Kenis, ; Tylianakis & Morris, ).…”

Section: Introductionmentioning

confidence: 99%

Leaf traits mediate changes in invertebrate herbivory along broad environmental gradients on Mt. Kilimanjaro, Tanzania

Njovu

Peters

Costa

et al. 2019

Journal of Animal Ecology

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Temperature, primary productivity, plant functional traits, and herbivore abundances are considered key predictors of leaf herbivory but their direct and indirect contributions to community‐level herbivory are not well understood along broad climatic gradients. Here, we determined elevational herbivory patterns and used a path analytical approach to disentangle the direct and indirect effects of climate, land use, net primary productivity (NPP), herbivore abundance, and plant functional traits on community‐level invertebrate herbivory along the extensive elevational and land use gradients at Mt. Kilimanjaro, Tanzania. We recorded standing leaf herbivory caused by leaf chewers, leaf miners and leaf gallers on 55 study sites distributed in natural and anthropogenic habitats along a 3,060 m elevation gradient. We related the total community‐level herbivory to climate (temperature and precipitation), NPP, plant functional traits (specific leaf area, leaf carbon‐to‐nitrogen [CN] ratio and leaf nitrogen‐to‐phosphorus [NP] ratio) and herbivore abundances. Leaf herbivory ranged from 5% to 11% along the elevation gradient. Total leaf herbivory showed unimodal pattern in natural habitats but a strongly contrasting bimodal pattern in anthropogenic habitats. We also detected some variation in the patterns of leaf herbivory along environmental gradients across feeding guilds with leaf chewers being responsible for a disproportionally large part of herbivory. Path analyses indicated that the variation in leaf herbivory was mainly driven by changes in leaf CN and NP ratios which were closely linked to changes in NPP in natural habitats. Similarly, patterns of leaf herbivory in anthropogenic habitats were best explained by variation in leaf CN ratios and a negative effect of land use. Our study elucidates the strong role of leaf nutrient stoichiometry and its linkages to climate and NPP for explaining the variation in leaf herbivory along broad climatic gradients. Furthermore, the study suggests that climatic changes and nutrient inputs in the course of land use change may alter leaf herbivory and consequently energy and nutrient fluxes in terrestrial habitats.

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“…). A relatively longer leaf life span could lead to a higher level of herbivory accumulation (Zhang, Zhang & Ma ). Therefore, we suggest that herbivory and possible differences in key functional traits of plants between the two hemispheres should be evaluated in further studies.…”

Section: Results Of the Models Testing The Effects Of Latitude Hemismentioning

confidence: 99%

“…A recent study suggested that leaf life span might be an important factor in explaining hemispheric asymmetries in herbivory (Zhang, Zhang & Ma 2017). Compared to the Northern hemisphere, the Southern hemisphere floras are typically dominated by evergreen species (Peppe et al 2011).…”

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confidence: 99%

A re‐evaluation of hemispheric asymmetries in herbivory: a response to Kozlov & Klemola 2017

Zhang

2017

Journal of Ecology

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Summary Kozlov & Klemola (Journal of Ecology, 105, 2017: 000‐000) argued that our conclusion about hemispheric asymmetries in herbivory is not supported after the replacement of data points extracted from Moles & Westoby (Oikos, 90, 2000: 517–524.). To re‐evaluate the asymmetries in herbivory, we analysed the revised dataset according to Kozlov & Klemola's (2017) suggestion, as well as the dataset used in Kozlov et al. (Global Ecology and Biogeography, 24, 2015: 1126–1135.). All the analyses showed that herbivory decreased with latitude only in the Northern hemisphere, but in the Southern hemisphere, herbivory showed no relation to latitude. Model selection showed that in both datasets, hemisphere is a key determinant of herbivory, with Southern hemisphere having higher levels of herbivory than the Northern hemisphere. Synthesis. Based on currently available data collected from publications, we found evidence for hemispheric asymmetries in herbivory. This conclusion is unlikely to change even when the controversial data points are replaced.

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The association of leaf lifespan and background insect herbivory at the interspecific level

Cited by 27 publications

References 52 publications

The forgotten season: the impact of autumn phenology on a specialist insect herbivore community on oak

The forgotten season: the impact of autumn phenology on a specialist insect herbivore community on oak

Leaf traits mediate changes in invertebrate herbivory along broad environmental gradients on Mt. Kilimanjaro, Tanzania

A re‐evaluation of hemispheric asymmetries in herbivory: a response to Kozlov & Klemola 2017

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