Comparing taxon- and trait-environment relationships in stream communities

Saito, Victor S.; Siqueira, Tadeu; Bini, Luis Maurício; Costa‐Pereira, Raul; Santos, Edineusa Pereira; Pavoine, Sandrine

doi:10.1016/j.ecolind.2020.106625

Cited by 8 publications

(6 citation statements)

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“…However, the lack of global trait–environment relationships in two ecoregions (i.e., SPL and WMT) highlights the potentially important influence of other factors, including biotic interactions, in determining trait distributions (Kremer et al, 2017). Non‐significant trait–environment relationships have been observed for a number of taxa in a variety of systems, including primates in Africa (Williams et al, 2021) and mayfly communities in Brazil (Saito et al, 2020), suggesting that the relative importance of abiotic and biotic community assembly mechanisms remain poorly understood in the context of functional ecology at large geographic scales (Bower & Winemiller, 2019b). Species sharing similar functional traits may be prone to the effects of limiting similarity—an evolutionary mechanism associated with niche divergence (Ingram & Shurin, 2009; Montaña et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…Traits‐based investigations often assume that multiple species sharing a similar set of functional traits will respond similarly to abiotic conditions across regions characterised by distinct physiographic, geological, and climatic conditions (see Forrestel et al, 2017; Le Provost et al, 2020). Although traits‐based approaches are increasingly promoted for their ability to achieve a more mechanistic and generalisable understanding of how and why organisms respond to specific environmental conditions, recent studies have provided evidence to suggest that trait‐assembly patterns can vary considerably across different bioclimatic regions (Burner et al, 2021; Saito et al, 2020; Srivastava et al, 2023). For example, Saito et al (2020) found that the degree of similarity in responses of mayfly species to environmental conditions was not associated with the degree of similarity among individual species' traits.…”

Section: Introductionmentioning

confidence: 99%

“…Although traits‐based approaches are increasingly promoted for their ability to achieve a more mechanistic and generalisable understanding of how and why organisms respond to specific environmental conditions, recent studies have provided evidence to suggest that trait‐assembly patterns can vary considerably across different bioclimatic regions (Burner et al, 2021; Saito et al, 2020; Srivastava et al, 2023). For example, Saito et al (2020) found that the degree of similarity in responses of mayfly species to environmental conditions was not associated with the degree of similarity among individual species' traits. In fact, species with distinct trait compositions have been shown to respond similarly to environmental disturbances, suggesting that different trait combinations can contribute to the structuring of biological assemblages under global change (Agrawal, 2020; Fontana et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Functional biogeography of fluvial fishes across the conterminous U.S.A.: Assessing the generalisability of trait–environment relationships over large regions

2023

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1. Compared to taxonomic approaches, traits-based approaches are often implemented to gain a more mechanistic understanding of how biotic communities respond to changing environmental conditions, including landscape stressors.Studies evaluating trait-environment relationships have increased in prevalence over the last 2 decades, but such analyses have rarely been conducted across continental extents in which component regions exhibit substantial spatial variation in stressors and natural environmental conditions. Consequently, the role of biogeographic context in analyses of trait-environment relationships remains under studied. Here, we evaluated the generalisability of trait-environment relationships across the conterminous U.S.A. to advance our understanding of the functional biogeography of fluvial fishes. We sought to: (1) identify trait-environment relationships that were consistent regardless of regional differences in natural environmental conditions; and (2) address whether the multivariate structure of trait-environment relationships was comparable across regions.2. We used RLQ and fourth-corner analyses to identify significant trait-environment relationships across nine large ecoregions comprising the conterminous U.S.A.These statistical approaches provided a framework to analyse co-variation among 16 functional traits (e.g., trophic ecology, habitat preference) and 17 environmental variables representing 597 stream fish species whose abundances had been recorded in 45,183 stream reaches between 1990 and 2019.3. Trait-environment relationships varied among ecoregions such that few traitenvironment relationships were consistent. Although some trait-environment relationships were significant in multiple ecoregions, the strength and multivariate structure of such relationships varied. These findings suggest that the functional traits most responsive to changing environmental conditions are determined by distinct biogeographic processes. 4. Our findings add to a growing consensus that functional traits-based approaches are context dependent. Understanding the complex relationships between| 791

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Functional biogeography of fluvial fishes across the conterminous U.S.A.: Assessing the generalisability of trait–environment relationships over large regions

2023

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“…Moreover Saito et al. (2020) showed that aquatic invertebrates with different life histories could respond similarly to the same environment constraints in neotropical streams. In this study, we selected traits that mainly respond to local habitats (see González‐Trujillo, 2016; Tomanova & Usseglio‐Polatera, 2007).…”

Section: Discussionmentioning

confidence: 99%

“…Bishop et al (2015), for instance, observed a similar discrepancy in ant communities of tropical mountains, and concluded that the suite of traits was probably unrelated to contemporary or historical factors shaping taxonomic beta diversity patterns. Moreover Saito et al (2020) showed that aquatic invertebrates with different life histories could respond similarly to the same environment constraints in neotropical streams. In this study, we selected traits that mainly respond to local habitats (see González-Trujillo, 2016;Tomanova & Usseglio-Polatera, 2007).…”

Section: The Non-congruence Of Functional Beta Diversitymentioning

confidence: 99%

Historical legacies and contemporary processes shape beta diversity in Neotropical montane streams

González‐Trujillo

Saito

Petsch

et al. 2020

Journal of Biogeography

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AimContemporary dispersal constraints and environmental conditions are broadly recognized as significant drivers of beta diversity patterns. However, beta diversity patterns may also reflect the legacy of past climatic and geological events. In this study, we investigated the relative importance of historical and contemporary factors as drivers of taxonomic, functional and phylogenetic beta diversity in Neotropical stream communities.LocationThe Colombian Orinoco basin.TaxonDiatoms and insects.MethodsWe estimated taxonomic, phylogenetic and functional beta diversity using Baselga's (BAS) and Podani's (POD) frameworks. Following both frameworks, we further partitioned every biodiversity facet into turnover and nestedness or richness difference components. Then, we used generalized linear models (GLM) to relate each biodiversity facet with environmental, spatial and historical factors.ResultsWe found that both historical and contemporary factors affected current patterns of beta diversity. Historical factors and water pH and temperature had the strongest effect on beta diversity patterns, particularly for taxonomic and phylogenetic facets. GLM models performed better for insects than for diatoms in all three facets. Within communities, our analysis also revealed a partial congruence between BAS‐ and POD‐based results.Main conclusionsDue to their past geological history and contemporary environmental gradients, tropical montane streams are natural laboratories for disentangling the joint effects of ecological and biogeographical factors on biodiversity patterns. Our study reveals that present‐day distribution patterns cannot be fully explained without accounting for the effects of past geological and climatic events on mountain landscapes. In the Neotropics, montane geology sets the stage for speciation and landscape formation, with which ecological (e.g., dispersal limitation) and environmental factors interact to generate spatial variation in species turnover.

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Contribution of rare genera of aquatic insects to functional diversity in streams with multiple land use in the Amazon

2022

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Comparing taxon- and trait-environment relationships in stream communities

Cited by 8 publications

References 58 publications

Functional biogeography of fluvial fishes across the conterminous U.S.A.: Assessing the generalisability of trait–environment relationships over large regions

Functional biogeography of fluvial fishes across the conterminous U.S.A.: Assessing the generalisability of trait–environment relationships over large regions

Historical legacies and contemporary processes shape beta diversity in Neotropical montane streams

Contribution of rare genera of aquatic insects to functional diversity in streams with multiple land use in the Amazon

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