Spectrally derived values of community leaf dry matter content link shifts in grassland composition with change in biomass production

Polley, H. Wayne; Yang, Chenghai; Wilsey, Brian J.; Fay, Philip A.

doi:10.1002/rse2.145

Cited by 18 publications

(25 citation statements)

References 36 publications

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“…For each year, we summed calculated ANPP values of the two patches per community and two communities per metacommunity to derive ANPP for the community and metacommunity, respectively. Community LDMC per patch was estimated using a regression model developed from LDMC measurements on 52 single species stands (Polley et al 2020).…”

Section: Field Measurementsmentioning

confidence: 99%

“…The LDMC per patch was estimated from a PLSR model developed previously (Polley et al 2020). The PLSR model explained 73% of the variance in LDMC (%) in the calibration data.…”

Section: Derivation Of Ldmc α D and Dissimilarity From Remote Measmentioning

confidence: 99%

“…Techniques also are being developed to estimate community attributes that may explain local and spatial variation in ecosystem stability. Remote measurements of vegetation have, for example, been used to estimate communityweighted values of plant traits linked to ecosystem function (Chadwick and Asner 2016, Ali et al 2017, Polley et al 2020) and components of species diversity (Dalmayne et al 2013, Möckel et al 2016, Polley et al 2019b.…”

Section: Introductionmentioning

confidence: 99%

“…Community LDMC is a functional attribute (trait) that mechanistically links variation in plant species abundances and ecosystem functioning (Duru et al 2013). Species dissimilarity between communities, α D , and the abundance-weighted LDMC of grassland were derived from hyperspectral measurements of canopy reflectance (Polley et al 2019b(Polley et al , 2020. Precipitation variability is the primary driver of interannual variability in ANPP in the grassland studied (Polley et al 2020).…”

Section: Introductionmentioning

confidence: 99%

“…For example, ANPP stability of communities of perennial species depended on both diversity and a community attribute (weighted SLA; Polley and Wilsey 2018). Diversity and community attributes, in turn, can depend on soil properties (Polley et al 2019b(Polley et al , 2020.…”

Section: Introductionmentioning

confidence: 99%

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Temporal stability of grassland metacommunities is regulated more by community functional traits than species diversity

et al. 2020

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Temporal stability in aboveground net primary productivity (ANPP) is influenced by several attributes of plant communities. Identifying the primary regulators of stability and their roles across spatial scales is of both practical and theoretical importance. We assessed effects of species diversity (local or alpha diversity and species dissimilarity between local communities) together with spatial differences in two community functional attributes (mean aboveground biomass and community leaf dry matter content, LDMC) on temporal stability in spring ANPP of restored grassland. Biomass, community LDMC, and species dissimilarity were derived from remote measurements of canopy reflectance of grassland on two soil types. Results demonstrated that productivity at the larger spatial scale of the metacommunity (communities connected by dispersal) was stabilized more by spatial differences in community functional traits than by diversity or community differences in diversity. Spatial differences in community biomass and LDMC stabilized metacommunity productivity by increasing differences in the productivity responses of spatially distinct communities to interannual variation in precipitation, but de‐stabilized ANPP on one soil type by reducing the temporal stability of local communities. Our results demonstrate the utility of remote sensing for quantifying community attributes useful to assess or predict temporal stability of grassland ANPP. We conclude that temporal stability in productivity depended largely on community differences in functional attributes that couple plant growth to changes in resource availability.

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Section: Field Measurementsmentioning

confidence: 99%

“…The LDMC per patch was estimated from a PLSR model developed previously (Polley et al 2020). The PLSR model explained 73% of the variance in LDMC (%) in the calibration data.…”

Section: Derivation Of Ldmc α D and Dissimilarity From Remote Measmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Temporal stability of grassland metacommunities is regulated more by community functional traits than species diversity

et al. 2020

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Clinal variation in quantitative traits but not in evolutionary potential along elevational and latitudinal gradients in the widespread Anthyllis vulneraria

Daco,

Colling,

Matthies

2024

American J of Botany

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PremiseStrong elevational and latitudinal gradients allow the study of genetic differentiation in response to similar environmental changes. However, it is uncertain whether the environmental changes along the two types of gradients result in similar genetically based changes in quantitative traits. Peripheral arctic and alpine populations are thought to have less evolutionary potential than more central populations do.MethodsWe studied quantitative traits of the widespread Anthyllis vulneraria in a common garden. Plants originated from 20 populations along a 2000‐m elevational gradient from the lowlands to the elevational limit of the species in the Alps, and from 20 populations along a 2400‐km latitudinal gradient from the center of the distribution of the species in Central Europe to its northern distributional margin.ResultsMost traits showed similar clinal variations with elevation and latitude of origin, and the magnitude of all measured traits in relation to mean annual temperature was similar. Higher QST values than FST values in several traits indicated diversifying selection, but for others QST was smaller than FST. Genetic diversity of quantitative traits and neutral molecular markers was not correlated. Plasticity in response to favorable conditions declined with elevation and less strongly with latitude of origin, but the evolvability of traits did not.ConclusionsThe clinal variation suggests adaptive differentiation of quantitative traits along the two gradients. The evolutionary potential of peripheral populations is not necessarily reduced, but lower plasticity may threaten their survival under rapidly changing climatic conditions.

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Community leaf dry matter content predicts plant production in simple and diverse grassland

2022

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Plant growth correlates with values of collinear (covarying) traits from the leaf economics spectrum. Environmental variation and differences in community composition may alter contributions of these traits to plant production and thereby limit the consistency of trait-based growth predictions among years and plant communities. We tested effects of interannual variation in precipitation and differences in grassland community composition (planted monoculture of switchgrass, Panicum virgatum, and mixture of perennial herbaceous species) on the utility of two traits from the leaf economics spectrum (leaf dry matter content [LDMC] and plant [N]) to predict aboveground net primary production (ANP) during spring of 6 years. Spatial and temporal variation in spring production correlated with community-scale (species abundance-weighted) values of both traits, but community LDMC explained 66% of the variance in production and accounted for ≥89% of the variance explained by the two traits combined. The ANP response to trait variation and the variance in ANP explained by trait values differed with precipitation and between communities. Greater precipitation increased the production response to trait variation by increasing slopes of ANP-trait regression relationships and increased the variance in ANP explained by trait values. Communities differed in response to precipitation variation and in the role of annual variation in the [N]-LDMC relationship in explaining variance in ANP. Results indicate that mean trends in grassland production can be predicted using community-scale values of LDMC. Traitbased predictions of grassland production could be improved, however, by accommodating precipitation and community effects on production-trait relationships.

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Spectrally derived values of community leaf dry matter content link shifts in grassland composition with change in biomass production

Cited by 18 publications

References 36 publications

Temporal stability of grassland metacommunities is regulated more by community functional traits than species diversity

Temporal stability of grassland metacommunities is regulated more by community functional traits than species diversity

Clinal variation in quantitative traits but not in evolutionary potential along elevational and latitudinal gradients in the widespread Anthyllis vulneraria

Community leaf dry matter content predicts plant production in simple and diverse grassland

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