Global gradients in intraspecific variation in vegetative and floral traits are partially associated with climate and species richness

Kuppler, Jonas; Albert, Cécile H.; Ames, Gregory M.; Armbruster, W. Scott; Boenisch, Gerhard; Boucher, Florian C.; Campbell, Diane R.; Carneiro, Liedson Tavares; Chacón‐Madrigal, Eduardo; Enquist, Brian J.; Fonseca, Carlos Roberto; Gómez, José M.; Guisan, Antoine; Higuchi, Pedro; Karger, Dirk Nikolaus; Kattge, Jens; Kleyer, Michael; Kraft, Nathan J. B.; Larue-Kontić, Anne Amélie C.; Lázaro, Amparo; Lechleitner, Martin; Loughnan, Deirdre; Minden, Vanessa; Niinemets, Ülo; Overbeck, Gerhard E.; Parachnowitsch, Amy L.; Perfectti, Francisco; Pillar, Valério D.; Costa, David Schellenberger; Sletvold, Nina; Stang, Martina; Alves-dos-Santos, Isabel; Streit, Helena; Wright, Justin P.; Zych, Marcin; Junker, Robert R.

doi:10.1111/geb.13077

Cited by 67 publications

(54 citation statements)

References 119 publications

(170 reference statements)

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“…Moreover, the high seed traits variability among invasive Chilean Taraxacum officinale populations appeared to be highly correlated with variation in rainfall (Molina-Montenegro et al 2018) revealing the importance of environmental conditions and seasonality in determining seed traits variability. Recently, the study of global gradients for intraspecific trait variation with almost 3000 species revealed pronounced associations with climate (Kuppler et al 2020). Despite the idiosyncrasy of species-specific associations across gradients, in general, lower variation was observed in colder areas and higher in drier areas.…”

Section: Contributors To Seed Traits Variability: Geographic Distance Bioclimatic Conditions and Human Densitymentioning

confidence: 99%

“…However, the geographic variation of seed traits for a species, i.e., seed traits interpopulation variability, may come from different sources. Environmental heterogeneity, which includes climatic and habitat variability, is considered the main driver of intraspecific variability (Kuppler et al 2020) and may strongly contribute to interpopulation variability with the more similar populations under the more similar environmental conditions. It may be therefore assumed that geographic distance together with environmental distance (environmental dissimilarity) and habitat heterogeneity may determine interpopulation variability.…”

Section: Introductionmentioning

confidence: 99%

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Geographic patterns of seed trait variation in an invasive species: how much can close populations differ?

2021

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Seeds play a major role in plant species persistence and expansion, and therefore they are essential when modeling species dynamics. However, homogeneity in seed traits is generally assumed, underestimating intraspecific trait variability across the geographic space, which might bias species success models. The aim of this study was to evaluate the existence and consequences of interpopulation variability in seed traits of the invasive species Carpobrotus edulis at different geographical scales. We measured seed production, morphology, vigour and longevity of nine populations of C. edulis along the Catalan coast (NE Spain) from three differentiated zones with a human presence gradient. Geographic distances between populations were contrasted against individual and multivariate trait distances to explore trait variation along the territory, evaluating the role of bioclimatic variables and human density of the different zones. The analysis revealed high interpopulation variability that was not explained by geographic distance, as regardless of the little distance between some populations (< 0.5 km), significant differences were found in several seed traits. Seed production, germination, and persistence traits showed the strongest spatial variability up to 6000% of percent trait variability between populations, leading to differentiated C. edulis soil seed bank dynamics at small distances, which may demand differentiated strategies for a cost-effective species management. Seed trait variability was influenced by human density but also bioclimatic conditions, suggesting a potential impact of increased anthropogenic pressure and climate shifts. Geographic interpopulation trait variation should be included in ecological models and will be important for assessing species responses to environmental heterogeneity and change.

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Section: Contributors To Seed Traits Variability: Geographic Distance Bioclimatic Conditions and Human Densitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Geographic patterns of seed trait variation in an invasive species: how much can close populations differ?

2021

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“…In this study, we collected leaf size data of both in situ and common garden populations of R. soongarica in northwest China to investigate how environmental and genetic differences affect leaf size variations in this species. Theoretically, intraspecific trait variation is affected by trade‐offs between abiotic stress and biotic factors (such as species richness and trait associations) (Agrawal, 2020; Kuppler et al., 2020). Considering the sparse vegetation and limited resources in ACA, we hypothesized that leaf size variations of this constructive shrub were more impacted by abiotic stress gradients.…”

Section: Introductionmentioning

confidence: 99%

Leaf size variations in a dominant desert shrub, Reaumuria soongarica, adapted to heterogeneous environments

Fan

Yan

Chen

et al. 2020

Ecology and Evolution

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The climate in arid Central Asia (ACA) has changed rapidly in recent decades, but the ecological consequences of this are far from clear. To predict the impacts of climate change on ecosystem functioning, greater attention should be given to the relationships between leaf functional traits and environmental heterogeneity. As a dominant constructive shrub widely distributed in ACA, Reaumuria soongarica provided us with an ideal model to understand how leaf functional traits of desert ecosystems responded to the heterogeneous environments of ACA. Here, to determine the influences of genetic and ecological factors, we characterized species‐wide variations in leaf traits among 30 wild populations of R. soongarica and 16 populations grown in a common garden. We found that the leaf length, width, and leaf length to width ratio (L/W) of the northern lineage were significantly larger than those of other genetic lineages, and principal component analysis based on the in situ environmental factors distinguished the northern lineage from the other lineages studied. With increasing latitude, leaf length, width, and L/W in the wild populations increased significantly. Leaf length and L/W were negatively correlated with altitude, and first increased and then decreased with increasing mean annual temperature (MAT) and mean annual precipitation (MAP). Stepwise regression analyses further indicated that leaf length variation was mainly affected by latitude. However, leaf width was uncorrelated with altitude, MAT, or MAP. The common garden trial showed that leaf width variation among the eastern populations was caused by both local adaptation and phenotypic plasticity. Our findings suggest that R. soongarica preferentially changes leaf length to adjust leaf size to cope with environmental change. We also reveal phenotypic evidence for ecological speciation of R. soongarica. These results will help us better understand and predict the consequences of climate change for desert ecosystem functioning.

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“…1 black arrow). Specifically, the effects of temperature on plant quality (e.g., plant defense, palatability, tissue nutrients), growth rates, or phenology can vary considerably among taxa from different clades or functional groups (Herz et al 2017;Roybal & Butterfield 2019;Kuppler et al 2020;Hamann et al 2021;Sanczuk et al 2021;Sandel et al 2021) (but see Midolo et al 2019). Variation in how taxa within a community respond to changing temperature could result in thermal mismatch between the plant community and insect herbivores, and alter the role of phylogenetic or functional diversity in driving herbivory across temperature regimes.…”

Section: Introductionmentioning

confidence: 99%

Effects of abiotic environment on invertebrate herbivory depend on plant community context in a montane grassland

Halliday

Cappelli

Laine

2022

Preprint

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Invertebrate herbivores are important and diverse, and their abundance and impacts are expected to undergo unprecedented shifts under climate change. Yet, past studies of invertebrate herbivory have documented a wide variety of responses to changing temperature, making it challenging to predict the direction and magnitude of these shifts. One explanation for these idiosyncratic responses is that changing environmental conditions may drive concurrent changes in plant communities and herbivore traits. Thus, the impacts of changing temperature on herbivory might depend on how temperature combines and interacts with characteristics of plant communities and the herbivores that occupy them. Here, we test this hypothesis by surveying invertebrate herbivory in 220, 0.5 meter-diameter herbaceous plant communities along a 1101-meter elevational gradient. Our results suggest that increasing temperature can drive community-level herbivory via at least three overlapping mechanisms: increasing temperature directly reduced herbivory, indirectly affected herbivory by reducing phylogenetic diversity of the plant community, and indirectly affected herbivory by altering the effects of functional and phylogenetic diversity on herbivory. Consequently, increasing functional diversity of plant communities had a negative effect on herbivory, but only in colder environments while a positive effect of increasing phylogenetic diversity was observed in warmer environments. Moreover, accounting for differences among herbivore feeding guilds considerably improved model fit, because different herbivore feeding guilds varied in their response to temperature and plant community composition. Together, these results highlight the importance of considering both plant and herbivore community context in order to predict how climate change will alter invertebrate herbivory.

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Global gradients in intraspecific variation in vegetative and floral traits are partially associated with climate and species richness

Abstract: This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 67 publications

References 119 publications

Geographic patterns of seed trait variation in an invasive species: how much can close populations differ?

Geographic patterns of seed trait variation in an invasive species: how much can close populations differ?

Leaf size variations in a dominant desert shrub, Reaumuria soongarica, adapted to heterogeneous environments

Effects of abiotic environment on invertebrate herbivory depend on plant community context in a montane grassland

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