Latitudinal gradients in herbivory on<i>Oenothera biennis</i>vary according to herbivore guild and specialization

Anstett, Daniel N.; Naujokaitis‐Lewis, Ilona; Johnson, Marc T. J.

doi:10.1890/13-0932.1

Cited by 67 publications

(110 citation statements)

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“…We also detected some variation in the patterns of leaf herbivory along environmental gradients across feeding guilds. Differences in the patterns of herbivory among different guilds of herbivores have also been reported in studies conducted in temperate and tropical regions (Anstett et al, ; Novotny et al, ). However, there are also studies which reported similar patterns of herbivory by different feeding guilds along an elevation gradient (Garibaldi et al, ).…”

Section: Discussionmentioning

confidence: 62%

“…Evidence suggests that the monotonic pattern is often observed when herbivory is related to temperature and stable climates along an elevation gradient. However, alternative patterns occur particularly when factors such as herbivore feeding guilds (Anstett, Naujokaitis‐Lewis, & Johnson, ; Galmán et al, ), species and functional composition (Anstett et al, ), biogeographic zones (Kozlov, Lanta, Zverev, & Zvereva, ), scale effects (truncated vs. full‐scale elevation gradients) (Nogués‐Bravo, Araújo, Romdal, & Rahbek, ), shifts in vegetation types and position of more limiting conditions in relation to elevation (e.g. drought or arid conditions in lowlands) are taken into account.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Discussionmentioning

confidence: 62%

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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“…; Adams & Zhang ; Adams et al . ), mixed (Anstett, Naujokaitis‐Lewis & Johnson ; Kim ; Moreira et al . ) or no relationship between latitude and herbivory (Andrew & Hughes ; Sinclair & Hughes ; Feller et al .…”

Section: Introductionmentioning

confidence: 99%

Latitudinal variation in herbivory: hemispheric asymmetries and the role of climatic drivers

Zhang

2016

Journal of Ecology

138

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Summary1. In the past, it was widely accepted that herbivory decreased with latitude. However, several empirical studies have failed to support this hypothesis, leading to strong debate. In addition to providing a quantitative assessment of the latitudinal gradient in herbivory, our study aims to provide new information about the role of climatic factors in shaping the latitudinal gradient in herbivory. 2. Through the collection and analysis of published data on herbivory, we tested the latitudinal herbivory hypothesis (LH hypothesis) and the relationship of temperature and precipitation to herbivory. 3. Based on 1890 data points distributed world-wide from more than 1000 plant species, our results show that herbivory decreased with latitude and increased with temperature only in the Northern Hemisphere. In contrast, in the Southern Hemisphere, herbivory did not have a relationship with latitude and tended to decrease with temperature. 4. Synthesis. This study shows the LH hypothesis is supported only in the Northern Hemisphere and highlights the importance of temperature in explaining the pattern of herbivory at the global scale. These possible hemispheric asymmetries in herbivory should not be overlooked in future studies.

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“…The power and utility of this technique has been amply demonstrated by numerous recent studies. Some recent examples include: Anstett et al 2014, Baltensperger and Huettmann 2015, Baltensperger et al 2015, Barrios-Garcia et al 2014, Hernández et al 2007, Huber 2015, Senterre et al 2004.…”

Section: Introductionmentioning

confidence: 99%

Salix transect of Europe: latitudinal patterns in willow diversity from Greece to arctic Norway

Cronk¹,

Ruzzier²,

Belyaeva³

et al. 2015

BDJ

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BackgroundWillows (Salix spp.) are ecosystem "foundation species" that are hosts to large numbers of associated insects. Determining their patterns of distribution across Europe is therefore of interest for understanding the spatial distribution of associated fauna. The aim of this study was to record species composition at multiple sites on a long latitudinal gradient (megatransect) across Europe as a baseline for the future detailed analysis of insect fauna at these sites. In this way we used willow stands as comparable mesocosms in which to study floristic and faunistic changes with latitude across Europe.New informationTo determine spatial patterning of an ecologically important group on a latitudinal gradient across Europe, we sampled willows at the stand level in 42 sites, approximately 100 km apart, from the Aegean (38.8°N) to the Arctic Ocean (70.6°N), but at a similar longitude (21.2 to 26.1°E). The sites were predominantly lowland (elevations 1 to 556 metres amsl, median = 95 m) and wet (associated with rivers, lakes, drainage ditches or wet meadows). The median number of willow taxa (species and hybrids) per stand was four, and varied from one to nine. There is a progressive increase in willow diversity from south to north with the median number of taxa per stand in southern Europe being three, and in northern Europe six. A total of 20 willow species were recorded, along with 12 hybrids. The most widespread willow in the transect was Salix alba L. (occurring in 20 sites out of 42) followed by S. triandra L. (15 sites), S. caprea L., S. phylicifolia L. (14 sites) and S. myrsinifolia Salisb., Salix ×fragilis L. (13 sites). Voucher specimens from this study are deposited in the herbaria of the Natural History Museum (BM) and the Royal Botanic Gardens Kew (K). These samples provide a "snapshot" of willow diversity along a latitudinal gradient and an indication of the geographically changing taxonomic diversity that is presented to willow-feeding herbivores across Europe. It is anticipated that further papers will examine the insect fauna collected from these sites as part of this study.

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Latitudinal gradients in herbivory onOenothera biennisvary according to herbivore guild and specialization

Cited by 67 publications

References 50 publications

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

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

Latitudinal variation in herbivory: hemispheric asymmetries and the role of climatic drivers

Salix transect of Europe: latitudinal patterns in willow diversity from Greece to arctic Norway

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