Elevational differentiation accelerates trait evolution but not speciation rates in Amazonian birds

Luzuriaga-Aveiga, Vanessa E.; Weir, Jason T.

doi:10.1111/ele.13229

Cited by 19 publications

(9 citation statements)

References 70 publications

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“…However, the functional measures used in our study (e.g. foraging) are likely to determine species occurrences at smaller spatial scales and traits associated with species reproduction might be more important for ecological speciation (Luzuriaga‐Aveiga and Weir ).…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, the environment can be strongly associated with the distribution of plants (Tuomisto et al ) and vertebrates (Buckley and Jetz ). This occurs because each species occupies a specific niche along climatic and edaphic gradients (Zuquim et al ), and environmental gradients promote speciation (Schluter ) and differentiation of morphological traits (Luzuriaga‐Aveiga and Weir ).…”

Section: Introductionmentioning

confidence: 99%

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Climate and geographic distance are more influential than rivers on the beta diversity of passerine birds in Amazonia

et al. 2020

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Variation in the spatial structure of communities in terms of species composition (beta diversity) is affected by different ecological processes, such as environmental filtering and dispersal limitation. Large rivers are known as barriers for species dispersal (riverine hypothesis) in tropical regions. However, when organisms are not dispersal limited by geographic barriers, other factors, such as climatic conditions and geographic distance per se, may affect species distribution. In order to investigate the relative contribution of major rivers, climate and geographic distance on Passeriformes beta diversity, we divided Amazonia into 549 grid cells (1° of latitude and longitude) and obtained data of species occurrence, climate and geographic position for each cell. Beta diversity was measured using taxonomic, phylogenetic and functional metrics of composition. The influence of climatic variables, geographic distance and rivers on these metrics was tested using regression analyses. Passerine beta diversity is characterized mainly by the change in species taxonomic identity and in phylogenetic lineages across climatic gradients and over geographic distance. However, species with similar traits are found throughout the entire Amazonia. The size of rivers was proportional to their effect on species composition. However, climate and geographic distance are relatively more important than rivers for Amazonian taxonomic and phylogenetic species composition.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Climate and geographic distance are more influential than rivers on the beta diversity of passerine birds in Amazonia

et al. 2020

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“…Another way the Andes can promote diversification is by providing novel environments at different elevations, which in turn could promote local adaptation and divergence (Schluter, 2000). Previous studies on birds supported that environmental gradients along elevation belts have promoted trait evolution (P. R. Grant & Grant, 2011;Luzuriaga-Aveiga & Weir, 2019).…”

Section: Introductionmentioning

confidence: 95%

Landscape genetics and species delimitation in the Andean palm rocket frog,Rheobatesspp

Genty

Guarnizo

Ramírez

et al. 2020

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The complex topography of the species-rich northern Andes creates heterogeneous environmental landscapes that are hypothesized to have promoted population fragmentation and diversification by vicariance, gradients and/or the adaptation of species. Previous phylogenetic work on the Palm Rocket Frog (Anura: Aromobatidae: Rheobates spp.), endemic to mid-elevation forests of Colombia, suggested valleys were important in promoting divergence between lineages. In this study, we use a spatially, multi-locus population genetic approach of two mitochondrial and four nuclear genes from 25 samples representing the complete geographic range of the genus to delimit species and test for landscape effects on genetic divergence within Rheobates. We tested three landscape genetic models: isolation by distance, isolation by resistance, and isolation by environment. Bayesian species delimitation (BPP) and a Poisson Tree Process (PTP) model both recovered five highly divergent genetic lineages within Rheobates, rather than the three inferred in a previous study. We found that an isolation by environment provided the only variable significantly correlated with genetic distances for both mitochondrial and nuclear genes, suggesting that local adaptation may have a role driving the genetic divergence within this genus of frogs. Thus, genetic divergence in Rheobates may be driven by the local environments where these frogs live, even more so that by the environmental characteristics of the intervening regions among populations (i.e., geographic barriers).

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“…3). While a pervasive pattern of slowdowns in speciation has been described at various geographic and taxonomic scales, e.g., (41,43,76,77), Neotropical tetrapod diversity levels have only rarely been perceived as saturated (25,27,43,46). Furthermore, waxing-and-waning dynamics (Sc.…”

Section: )mentioning

confidence: 99%

“…McPeek 2008;Phillimore & Price 2008;Morlon et al 2010;Luzuriaga-Aveiga & Weir 2019), however, Neotropical tetrapod diversity levels have rarely been perceived as saturated(Harvey et al 2020;Phillimore & Price 2008;Santos et al 2009;Weir 2006). Further, waxing-and-waning dynamics (Sc.…”

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confidence: 99%

The Origins and Drivers of Neotropical Diversity

Meseguer

Michel

Fabre

et al. 2021

Preprint

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The origin of the outstanding Neotropical biodiversity is still debated. A comprehensive understanding is hindered by the lack of deep-time comparative data across wide phylogenetic and ecological contexts. Here we define and evaluate four evolutionary scenarios assuming different diversity trajectories and drivers of Neotropical diversification. Relying on 150 phylogenies (12,512 species) of seed plants and tetrapods, we found that diversity mostly expanded through time (70% of the clades), but scenarios of saturated (21%) and declining (9%) diversity also account for a substantial proportion of Neotropical diversity. These scenarios occur indistinctly across the major regions, habitats, and altitudes of the Neotropics, suggesting no geographic structure of Neotropical diversification. On the contrary, diversification dynamics differ across taxonomic groups: plant diversity mostly expanded through time (88%), while for a significant fraction of tetrapods (43%) diversity accumulated at a slower pace or declined toward the present. These opposite evolutionary patterns reflect different capacities for plants and tetrapods to cope with environmental change, especially in relation to climate cooling. Our results suggest that the assembly of Neotropical diversity is a long, clade-specific, and complex process resulting from a combination of gradual and pulse dynamics associated with environmental stability and instability over macroevolutionary scales.

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Elevational differentiation accelerates trait evolution but not speciation rates in Amazonian birds

Cited by 19 publications

References 70 publications

Climate and geographic distance are more influential than rivers on the beta diversity of passerine birds in Amazonia

Climate and geographic distance are more influential than rivers on the beta diversity of passerine birds in Amazonia

Landscape genetics and species delimitation in the Andean palm rocket frog,Rheobatesspp

The Origins and Drivers of Neotropical Diversity

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