Population dynamics of Amazonian floodplain forest species support spatial variation on genetic diversity but not range expansions through time

Ribas, Camila C.; Shultz, Eduardo; Aleixo, Alexandre; Miyaki, Cristina Yumi

doi:10.1111/jbi.14478

Cited by 3 publications

(3 citation statements)

References 85 publications

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“…Moreover, this relationship between habitat affinity and demographic history stands independent of the phylogenetic relationships of the studied taxa (Figure S7). These results agree with evidence that, rather than localized, historical fluctuations in sedimentation dynamics affected the distribution of suitable habitat concomitantly and homogeneously across the whole basin (Sawakuchi et al., 2022; Thom et al., 2022).…”

Section: Discussionsupporting

confidence: 90%

“…For each sample, DNA was extracted using Qiagen DNeasy Blood and Tissue kit (Valencia, CA) following the manufacturer's protocol. DNA extracts were sent to Rapid Genomics (Gainesville, FL) where UCEs were sequenced using a probe set targeting 2321 UCEs, commonly used in avian studies (Barbosa et al, 2021;Luna et al, 2021Luna et al, , 2022Sawakuchi et al, 2022;Thom et al, 2020Thom et al, , 2022.…”

Section: Sampling and Genomic Data Acquisitionmentioning

confidence: 99%

“…Moreover, these fluctuations have likely affected the distribution of specific habitats in different ways, with a stronger impact on the more ephemeral and dynamic environments like river islands (Passos et al, 2020;Sawakuchi et al, 2022). Evidence from different studies seem to corroborate this hypothesis showing a more tumultuous evolutionary history in bird taxa associated with more dynamic floodplain environments (Barbosa et al, 2021;Choueri et al, 2017;Johnson et al, 2023;Luna et al, 2022;Sawakuchi et al, 2022;Thom et al, 2020Thom et al, , 2022. Nonetheless, a comprehensive classification of habitat specialization across the basin is still needed for a thorough understanding of the effect of distinct habitat associations in the responses of the endemic floodplain bird community to past landscape changes.…”

Section: Introductionmentioning

confidence: 96%

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Habitat specialization predicts demographic response and vulnerability of floodplain birds in Amazonia

Schultz,

Thom,

Zuquim

et al. 2023

Molecular Ecology

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The annual flooding cycle of Amazonian rivers sustains the largest floodplains on Earth, which harbour a unique bird community. Recent studies suggest that habitat specialization drove different patterns of population structure and gene flow in floodplain birds. However, the lack of a direct estimate of habitat affinity prevents a proper test of its effects on population histories. In this work, we used occurrence data, satellite images and genomic data (ultra‐conserved elements) from 24 bird species specialized on a variety of seasonally flooded environments to classify habitat affinities and test its influence on evolutionary histories of Amazonian floodplain birds. We demonstrate that birds with higher specialization in river islands and dynamic environments have gone through more recent demographic expansion and currently have less genetic diversity than floodplain generalist birds. Our results indicate that there is an intrinsic relationship between habitat affinity and environmental dynamics, influencing patterns of population structure, demographic history and genetic diversity. Within the floodplains, historical landscape changes have had more severe impacts on island specialists, making them more vulnerable to current and future anthropogenic changes, as those imposed by hydroelectric dams in the Amazon Basin.

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Section: Discussionsupporting

confidence: 90%

Section: Sampling and Genomic Data Acquisitionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

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Habitat specialization predicts demographic response and vulnerability of floodplain birds in Amazonia

Schultz,

Thom,

Zuquim

et al. 2023

Molecular Ecology

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The Role of Vicariance and Paleoclimatic Shifts in the Diversification of Uranoscodon superciliosus (Squamata, Tropiduridae) of the Amazonian Floodplains

Santos

Prudente²,

Rodrigues³

et al. 2022

Evol Biol

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Amazonian avian biogeography: Broadscale patterns, microevolutionary processes, and habitat-specific models revealed by multidisciplinary approaches

Capurucho,

Musher,

Lees

et al. 2023

Ornithology

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Our understanding of Amazonian biogeography is quickly increasing, catalyzed by the growing use of genomic datasets, improved knowledge of species distributions, and the accumulation of new data on the geological and climatic history of the region. The high number of species in Amazonia and their intricate patterns of geographic distribution triggered the development of many diversification hypotheses that shaped historical biogeography as a discipline. Here, we present a historical overview of avian biogeographic studies in Amazonia, their recent advances, outstanding questions, and future directions. We focus on how new approaches have led to novel understandings of the distribution patterns and diversification processes that underpin avian diversity. We show how genomic tools are being used to establish new hypotheses about the drivers of diversification and highlight the importance of recent studies of birds in previously overlooked environments, such as floodplains and open vegetation enclaves. We emphasize the importance of gene flow, species traits, and habitat affinities in studying diversification processes to fully acknowledge the complexity of Amazonian ecosystems and their history. We then discuss the current gaps in Amazonian taxonomic and biogeographic knowledge, with a focus on the issues that we believe hinder our understanding of the field. Amazonia has been facing increasing levels of forest loss due to agricultural expansion, infrastructure development, mining, climate change, and illegal activities catalyzed by weak governance. To halt biodiversity loss, it is crucial to increase our knowledge of the natural history and biogeography of Amazonian species. We suggest increasing incentives for research and training at institutions based in the region, as well as the establishment of partnerships with governments, local communities, NGOs, and international institutions to bring diverse communities together to address crucial questions.

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Population dynamics of Amazonian floodplain forest species support spatial variation on genetic diversity but not range expansions through time

Cited by 3 publications

References 85 publications

Habitat specialization predicts demographic response and vulnerability of floodplain birds in Amazonia

Habitat specialization predicts demographic response and vulnerability of floodplain birds in Amazonia

The Role of Vicariance and Paleoclimatic Shifts in the Diversification of Uranoscodon superciliosus (Squamata, Tropiduridae) of the Amazonian Floodplains

Amazonian avian biogeography: Broadscale patterns, microevolutionary processes, and habitat-specific models revealed by multidisciplinary approaches

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