Seasonal patterns of functional alpha and beta redundancies of macroinvertebrates in a disturbed (sub)tropical river

Wang, Lu; Li, Jiaxu; Tan, Lin; Han, Bo‐Ping

doi:10.1016/j.ecolind.2022.109777

Cited by 8 publications

(2 citation statements)

References 96 publications

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“…However for this statement to be correct, both functional diversity and species diversity have to be high (e.g., Aguirre-Gutiérrez et al, 2022) and variation in functional redundancy have to result from variation in species diversity only (biodiversity-ecosystem functioning insurance hypothesis, Yachi & Loreau, 1999). For example, in highly-diverse ecosystems, fluctuations in species diversity during seasonal disturbances may not be accompanied by similar fluctuations in functional diversity if the decrease in abundance for certain species is compensated by the increase in abundance of functionally redundant species (e.g., Wang et al, 2023). In that case, the accumulation of functional redundancy during favorable season allow a stabilization of functional diversity during the least favorable seasons.…”

Section: Discussionmentioning

confidence: 99%

Functional and phylogenetic β diversities and their link with clustering/overdispersion and uniqueness/redundancy

Pavoine,

Ricotta

2023

Preprint

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In the recent decades, research on biodiversity in community ecology has been marked by the consideration of species' evolutionary histories and biological traits, including those said functional as they relate to the functions a species has in ecosystems. Among the different spatial levels at which FP diversity can be quantified, less attention has been given to the definition of the general concept of between-communities (β) FP diversity than to those of local, within-communities (α) and regional, merged-communities (γ) FP diversities. Here we develop a new way for partitioning FP β diversity into elementary components to underline how and why FP β diversity differs from species β diversity, the latter reflecting only differences in species' abundances between communities. As a reference example, we consider two distinct measures of FP β diversity: Rao's dissimilarity coefficient (Qβ) that expresses an average dissimilarity between communities, and its transformation into an equivalent number of communities (Dβ). Thanks to analytical partitioning and simulations, we show that Qβ and Dβ are connected differently with typical patterns of community structure. The search for the ecological and evolutionary processes that drive community assembly and the assessment of community resilience and stability have indeed revealed typical community structures: the local clustering of species with similar traits or shared evolutionary histories; and the local (α) or regional (γ) presence of functionally or phylogenetically redundant versus unique species. While Qβ and Dβ are both increasing functions of species β diversity and γ FP uniqueness, Qβ increases with FP clustering while Dβ increases with α FP redundancy. The selection of an index of β diversity for a given study depends on its objective, such as communication to conservation policy makers or theoretical study of the ecological and evolutionary processes of community assembly. To facilitate and secure this selection, we call, through our study, for the development of formal and precise definition(s) for FP β diversity in light of the concepts of clustering versus overdispersion, and redundancy versus uniqueness. In particular, we call for further research on when and why FP β diversity should increase with FP clustering.

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Section: Discussionmentioning

confidence: 99%

Functional and phylogenetic β diversities and their link with clustering/overdispersion and uniqueness/redundancy

Pavoine,

Ricotta

2023

Preprint

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“…Finally, we calculated functional redundancy (FR): FR = (D–Q)/D ( Ricotta et al, 2016 ). The methodology of calculating functional diversity and functional redundancy was described in detail in Wang et al (2023) . All diversity analyses were performed using R v4.2.0.…”

Section: Methodsmentioning

confidence: 99%

Winter dynamics of functional diversity and redundancy of riffle and pool macroinvertebrates after defoliation in a temperate forest stream

Wang

Xia²,

Li³

et al. 2023

Front. Microbiol.

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Headwater streams are highly heterogenous and characterized by a sequence of riffles and pools, which are identified as distinct habitats. That higher species richness and density in riffles than in pools is considered a general pattern for macroinvertebrates. As temperate winters can last long up to half a year, however, macroinvertebrate communities of riffles and pools may assemble differently under ices or snows. Particularly, defoliation concentrating in autumn can largely change habitats in both riffles and pools by litter patching. According to the absence or presence of litter patches, there exist four types of subhabitats, i.e., riffle stones, riffle litters, and pool sediments, pool litters, which are selectively colonized by macroinvertebrates. To study the spatial pattern and temporal dynamics of colonization, macroinvertebrates were surveyed in a warmer temperate forest headwater stream in Northeast China during four periods: autumn, pre-freezing, freezing, and thawing periods. Our study focused on functional trait composition, functional diversity and functional redundancy of macroinvertebrate communities. The colonization of macroinvertebrates was found to be significantly different in these subhabitats. Riffle stones supported higher taxonomic and functional diversities than pool sediments; litter patches supported higher total macroinvertebrate abundance and higher functional redundancy than riffle stones or pool sediments. The functional trait composition changed significantly with seasonal freeze-thaw in both riffle stones and pool sediments, but not in litter patches. Macroinvertebrate community in litter patches showed seasonal stability in taxonomic and functional diversities and functional redundancy. Thus, this study strongly highlights that litter patches play an important role structuring macroinvertebrate community over winter, supporting high abundance and maintaining functional stability.

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The seasonal patterns of aquatic insect composition and diversity in a disturbed (sub)tropical river revealed by linear and nonlinear approaches with occurrence and abundance data

Wang

et al. 2023

Hydrobiologia

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Seasonal patterns of functional alpha and beta redundancies of macroinvertebrates in a disturbed (sub)tropical river

Cited by 8 publications

References 96 publications

Functional and phylogenetic β diversities and their link with clustering/overdispersion and uniqueness/redundancy

Functional and phylogenetic β diversities and their link with clustering/overdispersion and uniqueness/redundancy

Winter dynamics of functional diversity and redundancy of riffle and pool macroinvertebrates after defoliation in a temperate forest stream

The seasonal patterns of aquatic insect composition and diversity in a disturbed (sub)tropical river revealed by linear and nonlinear approaches with occurrence and abundance data

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