Contrasting patterns and drivers in taxonomic versus functional diversity, and community assembly of aquatic plants in subtropical lakes

2018 ◽  
Vol 27 (12) ◽  
pp. 3103-3118 ◽  
Author(s):  
Xueqin Liu ◽  
Hongzhu Wang
Keyword(s):  
Functional Diversity ◽  
Aquatic Plants ◽  
Community Assembly ◽  
Subtropical Lakes

scholarly journals Community assembly on extensive green roofs: Effects of dispersal‐, abiotic‐ and biotic filtering on the spontaneous species‐ and functional diversity

2019 ◽  
Vol 30 (6) ◽  
pp. 1078-1088 ◽  
Author(s):  
Jan Vanstockem ◽  
Amelie Bastiaens ◽  
Kenny Helsen ◽  
Ben Somers ◽  
Martin Hermy
Keyword(s):  
Functional Diversity ◽  
Community Assembly ◽  
Green Roofs ◽  
Extensive Green Roofs

scholarly journals Relationships between taxonomic and functional diversity: insights into assembly processes

2016 ◽  
Author(s):  
Doriane Stagnol ◽  
Lise Bacouillard ◽  
Dominique Davoult
Keyword(s):  
Functional Diversity ◽  
Community Assembly ◽  
Rocky Shore ◽  
Taxonomic Diversity ◽  
Distinct Species ◽  
Ecological Niches ◽  
Similar Species ◽  
Marine Habitats ◽  
Ecological Redundancy ◽  
And Function

Among the potential indicators of biodiversity, those based on the functional traits of species are interesting because they measure the aspects of diversity that potentially affect community assembly and function. However, trait-based approaches are still rarely considered and little is known about the degree to which taxonomic diversity (TD) and functional diversity (FD) are correlated. Yet, this relationship is thought to depend on the extent of ecological redundancy within the assemblage, i.e. the number of taxonomically distinct species that exhibit similar ecological functions. In this study, we characterized taxonomic and functional diversity within and between two marine habitats (rocky shore vs mudflats) under human-induced disturbances. Models were also used to test whether the relationship between TD and FD differed according to the indices used to characterize them. We found little effect of human disturbance on the shape of the TD-FD relationship, whereas communities of the mudflat appeared to be less redundant than those of rocky shore. This could be explained by the assembly rules of ecosystems: biotic filtering (competition and resource partitioning) reduces redundancy by selecting for functionally dissimilar species, whereas abiotic filtering increases redundancy by selecting for similar species sharing adaptations to a particular environment. The rocky shore environment is characterized by heterogeneity that allows the formation of distinct ecological niches that can be colonized by similar species: the abiotic filtering does not limit the redundancy permitted by habitat. Conversely, in the more homogeneous environment of mudflat, the biotic filter mitigates redundancy. Trait-mediated abiotic filtering appears to play an important role in community assembly in complex habitats, whereas the relative importance of competitive exclusion appears to be greater in homogeneous habitats.

Community assembly processes along a sub-Mediterranean elevation gradient: analyzing the interdependence of trait community weighted mean and functional diversity

Plant Ecology ◽  
2019 ◽  
Vol 220 (12) ◽  
pp. 1139-1151 ◽  
Author(s):  
Alessandro Bricca ◽  
Luisa Conti ◽  
Maria Federico Tardella ◽  
Andrea Catorci ◽  
Marco Iocchi ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Community Assembly ◽  
Elevation Gradient ◽  
Weighted Mean ◽  
Community Weighted Mean

Community assembly of Diptera following restoration of mined boreal bogs: taxonomic and functional diversity

2011 ◽  
Vol 16 (2) ◽  
pp. 165-176 ◽  
Author(s):  
Amélie Grégoire Taillefer ◽  
Terry A. Wheeler
Keyword(s):  
Functional Diversity ◽  
Community Assembly

scholarly journals Above- and Belowground Plant Functional Composition Show Similar Changes During Temperate Forest Swamp Succession

2021 ◽  
Vol 12 ◽  
Author(s):  
Yu-Kun Hu ◽  
Xu Pan ◽  
Xu-Yan Liu ◽  
Zhi-Xi Fu ◽  
Man-Yin Zhang
Keyword(s):  
Functional Diversity ◽  
Soil Ph ◽  
Community Assembly ◽  
Temperate Forest ◽  
Dry Matter ◽  
Fine Root ◽  
Root Traits ◽  
Matter Content ◽  
Dry Matter Content ◽  
Functional Composition

Plant functional composition, defined by both community-weighted mean (CWM) traits and functional diversity, can provide insights into plant ecological strategies and community assembly. However, our understanding of plant functional composition during succession is largely based on aboveground traits. Here we investigated community-level traits and functional diversity for six pairs of analogous leaf and fine root traits of understory plants in a temperate forest swamp during succession with a decrease in soil pH and nutrient availability. CWMs of traits related to resource acquisition (including specific leaf area, specific root length, leaf N, leaf P, root N, and root P) decreased with succession, whereas those related to resource conservation (leaf dry matter content, root dry matter content, leaf tissue density, leaf C, and root C) increased along the forest swamp successional gradient. Multi-trait functional dispersion (FDis) of both leaf and fine root traits tended to decrease along the successional gradient, but functional richness and evenness were highest at the middle successional stage. Moreover, FDis of individual plant traits except N showed the same pattern as multi-trait FDis. Soil pH and nutrient availability were the main drivers of successional changes in both CWM traits and FDis. The changes of community-level traits along succession indicated a shift from acquisitive to conservative strategy of understory plants during forest swamp succession. Similar trends in leaf and fine root functional diversity along succession may indicate above- and belowground functional diversity are coordinated during the processes of plant community assembly. These findings of linkages between above- and belowground plant functional composition have important implications for plant community dynamics and assembly rules.

scholarly journals Functional diversity is more sensitive to biotic filters than phylogenetic diversity during community assembly

Ecosphere ◽  
2018 ◽  
Vol 9 (3) ◽  
pp. e02164 ◽  
Author(s):  
Mohammed I. Khalil ◽  
David J. Gibson ◽  
Sara G. Baer ◽  
Jason E. Willand
Keyword(s):  
Functional Diversity ◽  
Community Assembly ◽  
Phylogenetic Diversity

scholarly journals Relationships between taxonomic and functional diversity: insights into assembly processes

2016 ◽  
Author(s):  
Doriane Stagnol ◽  
Lise Bacouillard ◽  
Dominique Davoult
Keyword(s):  
Functional Diversity ◽  
Community Assembly ◽  
Rocky Shore ◽  
Taxonomic Diversity ◽  
Distinct Species ◽  
Ecological Niches ◽  
Similar Species ◽  
Marine Habitats ◽  
Ecological Redundancy ◽  
And Function

Among the potential indicators of biodiversity, those based on the functional traits of species are interesting because they measure the aspects of diversity that potentially affect community assembly and function. However, trait-based approaches are still rarely considered and little is known about the degree to which taxonomic diversity (TD) and functional diversity (FD) are correlated. Yet, this relationship is thought to depend on the extent of ecological redundancy within the assemblage, i.e. the number of taxonomically distinct species that exhibit similar ecological functions. In this study, we characterized taxonomic and functional diversity within and between two marine habitats (rocky shore vs mudflats) under human-induced disturbances. Models were also used to test whether the relationship between TD and FD differed according to the indices used to characterize them. We found little effect of human disturbance on the shape of the TD-FD relationship, whereas communities of the mudflat appeared to be less redundant than those of rocky shore. This could be explained by the assembly rules of ecosystems: biotic filtering (competition and resource partitioning) reduces redundancy by selecting for functionally dissimilar species, whereas abiotic filtering increases redundancy by selecting for similar species sharing adaptations to a particular environment. The rocky shore environment is characterized by heterogeneity that allows the formation of distinct ecological niches that can be colonized by similar species: the abiotic filtering does not limit the redundancy permitted by habitat. Conversely, in the more homogeneous environment of mudflat, the biotic filter mitigates redundancy. Trait-mediated abiotic filtering appears to play an important role in community assembly in complex habitats, whereas the relative importance of competitive exclusion appears to be greater in homogeneous habitats.

scholarly journals Trait-based community assembly of epiphytic diatoms in saline astatic ponds: a test of the stress-dominance hypothesis

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Éva Ács ◽  
Angéla Földi ◽  
Csaba Ferenc Vad ◽  
Zsuzsa Trábert ◽  
Keve Tihamér Kiss ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Community Assembly ◽  
Environmental Gradients ◽  
N Uptake ◽  
Environmental Filtering ◽  
Limiting Similarity ◽  
Epiphytic Diatoms ◽  
Assembly Rule ◽  
Trait Convergence ◽  
Diatom Communities

Abstract The stress dominance hypothesis (SDH) postulates that strong environmental gradients drive trait convergence in communities over limiting similarity. Previous studies, conducted mostly with terrestrial plant communities, found controversial evidence for this prediction. We provide here the first test for SDH for epiphytic diatoms. We studied community assembly in diatom communities of astatic ponds. These water bodies serve as a good model system for testing SDH because they exhibit stress gradients of various environmental factors. Functional diversity of diatom communities was assessed based on four traits: (1) combined trait reflecting the trade-off between stress tolerance and competitive dominance, (2) cell size, (3) oxygen requirement and (4) N-uptake strategy. According to our results, salinity, pH and the width of the macrophyte belt appeared as significant predictors of the trait convergence/divergence patterns presumably acting through influencing the availability of carbon dioxide and turbidity. Lower trait diversity was found in turbid, more saline and more alkaline ponds and functional diversity was higher in transparent, less saline and less alkaline ponds. Overall, our results supported the stress dominance hypothesis. In habitats representing increased environmental stress, environmental filtering was the most important community assembly rule, while limiting similarity became dominant under more favourable conditions.

scholarly journals Intraspecific Trait Variation Dilutes Deterministic Processes in Community Assembly of Arid Shrubs across Multiple Scales

Diversity ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 447
Author(s):  
Jinshi Xu ◽  
Han Dang ◽  
Tingting Tian ◽  
Yongfu Chai ◽  
Jiaxin Quan ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Community Assembly ◽  
Species Coexistence ◽  
Multiple Scales ◽  
Spatial Scales ◽  
Extreme Environments ◽  
Functional Trait ◽  
Trait Variation ◽  
Intraspecific Trait Variation ◽  
Deterministic Processes

Trait-based approaches present a promising avenue for improving our understanding of species coexistence and community assembly, while intraspecific trait variation (ITV) across different spatial scales is important in trait-based community assembly mechanisms, especially in extreme environments. In this study, we focused on the functional diversity and community assembly patterns of a desert community across different spatial scales and investigated whether ITV plays a significant role in community assembly processes in arid habitats. A 50 m × 50 m plot with different small quadrats was established in a typical desert community at the transition zone between the Tengger Desert and Loess Plateau in China. A total of 14 traits were selected to assess the trait-based functional diversity and assembly processes in the community. We found that functional diversity showed different patterns when considering ITV and related to different types of traits (chemical traits or morphological traits) and some soil factors (pH and nitrate nitrogen). Plant communities in this study showed stochastic distribution patterns and similar functional diversity patterns based on functional trait approaches, regardless of spatial scales. Also, the effect of ITV on community assembly did not show more effect with increasing scales. These results indicated that ITV diluted deterministic processes in community assembly across scales in arid habitats.

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