The role of tectonics in the late Quaternary evolution of Brazil's Amazonian landscape

Rossetti, Dilce de Fátima

doi:10.1016/j.earscirev.2014.08.009

Cited by 58 publications

(42 citation statements)

References 90 publications

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“…However, recent phylogeographical studies of vertebrates, including birds (Ribas et al ., ; Fernandes et al ., ), frogs (Jungfer et al ., ; Simões et al ., ) and snakes (Nascimento, ), have revealed shallow genetic divergences between intraspecific lineages associated with the opposite banks of Brazilian Shield rivers. These results may indicate that the intrinsic ability of each lineage to cross a river and to establish populations on the other bank are more relevant than the age, hydromorphology or stability of rivers, or they may add to the evidence that Brazilian Shield rivers and the surrounding environments have gone through important historical changes in the recent past that may have affected species distributional patterns (Rossetti, ; C. C. Ribas et al ., in prep. ).…”

Section: Discussionmentioning

confidence: 99%

“…Historically, several drivers have been suggested to account for the mega‐diversity currently found in the Amazonian rain forest. At a regional scale, these drivers include Andean orogeny and drainage evolution (Hoorn et al ., ; Latrubesse et al ., ), neotectonism (Rossetti, ) and climate change (Haffer, ), while at a local scale they can include interactions between biotic and abiotic factors or intrinsic ecological constraints (Cornell & Lawton, ). The dynamic equilibrium between historical events and local ecological conditions led to the development and maintenance of the current Amazonian diversity patterns (Tuomisto & Ruokolainen, ).…”

Section: Introductionmentioning

confidence: 99%

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The combined influence of riverine barriers and flooding gradients on biogeographical patterns for amphibians and squamates in south‐eastern Amazonia

Moraes

Pavan²,

Barros

et al. 2016

Journal of Biogeography

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Aim Our aim was to investigate how the distance to water (flooding gradients) and riverine barriers (Tapajós and Jamanxim rivers) influence the distributional patterns of amphibian and squamate assemblages in the middle Tapajós River region, south‐eastern Amazonia. We also considered the planned hydroelectric dams on both rivers in reviewing the possible impacts of these factors on the amphibian and squamate assemblages. Location Middle Tapajós River system, south‐eastern Amazonia. Methods We conducted diurnal and nocturnal surveys combining pitfall traps and active searches along both banks of the Tapajós and Jamanxim rivers. We identified specimens using an integrative morphological, acoustic, ecological and molecular approach and evaluated the influence of riverine barriers and distance to water using uni‐ and multivariate ordinations, regressions and ANOVA. Results We found changes in species composition for both groups along the flooding gradient and differential riverine barrier effects. The rivers restricted the distribution of 33% of the amphibian species and 8% of the squamates. For amphibians, the main distributional barrier was the Tapajós River, while for squamates both rivers were of similar importance. The assemblages most affected by riverine barriers were non‐riparian amphibians and squamates, as well as riparian amphibians associated with small streams. The functional groups most affected were small, diurnal terrestrial amphibians and small–medium, diurnal partly tree‐dwelling squamates. Main conclusions The Tapajós River is a distributional boundary for lineages centred in western and eastern Amazonia. The fact that many taxa occur on both banks suggests that the Tapajós is a recent or semi‐permeable barrier, while the Jamanxim is an even more recent or weaker barrier. Anthropogenic activities that affect water level, flooding cycles and river flow may influence these natural patterns and cause changes to the equilibrium of the riverine barrier effect. Studies seeking to identify these influences should focus on the most affected functional groups.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The combined influence of riverine barriers and flooding gradients on biogeographical patterns for amphibians and squamates in south‐eastern Amazonia

Moraes

Pavan²,

Barros

et al. 2016

Journal of Biogeography

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“…The occurrence of WSV-endemic bird species in different parts of the Amazon suggests an historical explanation related to landscape dynamics through time. Size and degree of isolation of WSV patches has a marked influence in the bird distribution and these two landscape proprieties may have had a dynamic history along the Pleistocene (Latrubesse 2002, Anhuf et al 2006, Rossetti 2014. The expansion and contraction of interfluvial forests, open areas, and riparian vegetation may have contributed to the isolation or connectivity of populations of WSV birds along time, leading to current distribution patterns.…”

Section: Discussionmentioning

confidence: 99%

Bird Communities in Amazonian White‐Sand Vegetation Patches: Effects of Landscape Configuration and Biogeographic Context

Borges¹,

Cornelius

Moreira³

et al. 2016

Biotropica

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Vegetation growing on white‐sand soils is patchily distributed across the Amazon and is characterized by scrublands or open vegetation types (white‐sand campinas) and by forests (white‐sand forests) surrounded by contrasting habitat types. We studied birds in patches of white‐sand campinas in contrasting landscapes in four regions located in distinct biogeographic units delimited by major rivers. Our aim was to investigate the contribution of landscape configuration and biogeographic context to patterns of species diversity and distribution. Aracá and Viruá landscapes (on opposite sides of Rio Branco) are composed by large and continuous patches of white‐sand campinas, while Jaú, Novo Airão and Uatumã landscapes (on opposite sides of Rio Negro) are composed by small patches of white‐sand campinas isolated by continuous terra firme forests. Birds were sampled using mist‐nets and qualitative censuses, and were classified as white‐sand vegetation specialists or non‐specialists. Bird species diversity was significantly different among studied regions, and composition was significantly different for both, specialists and non‐specialists birds. Local variability in species diversity and composition was best explained by white‐sand campina area, patch proximity, and distance to major rivers. We conclude that landscape configuration and biogeographical context influence patterns of bird diversity, abundance, and composition in Amazonian white‐sand campinas.

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“…A wide variety of variables may affect the abundance of mammalian assemblages not subjected to human interference, including climate, tectonics, fluvial history, topography (Tuomisto et al, 1995(Tuomisto et al, , 2003Kristiansen et al, 2012;Pomara et al, 2012Pomara et al, , 2014Rossetti, 2014;Higgins et al, 2011Higgins et al, , 2015, rainfall (Janson et al, 1981;Terborgh, 1983), site temperature (Peters and Raelson, 1984), plant antipredator defences (Janzen, 1974;Montgomery and Sunquist, 1978), home range size (Milton and May, 1976), predators (Andrewartha, 1961), competition (Emmons, 1984), among many others.…”

Section: Introductionmentioning

confidence: 99%

Tree reproductive phenology determines the abundance of medium–sized and large mammalian assemblages in the Guyana shield of the Brazilian Amazonia

Pontes

Layme

Lucena

et al. 2020

Anim. Biodiv. Conserv.

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Tree reproductive phenology determines the abundance of medium-sized and large mammalian assemblages in the Guyana shield of the Brazilian Amazonia. Assemblages of medium and large-sized mammals were studied in the Guyana shield of the Brazilian Amazonia. Diurnal and nocturnal line-transect samplings were carried out via the line-transect method in five different forest types along a 10-km transect, along which we also recorded habitat variables, such as tree species diversity, reproductive phenology, and residual fruit productivity. Group density was separately calculated for all mammalian species in the five forest types.Stepwise multiple regression analyses were performed to determine which habitat variables best predicted the mammalian species densities in the sampled forests. The sole determinants of mammalian densities in the forest types studied were basal area of each forest type, total number of tree species in each forest type, and tree reproductive phenology. ResumenLa fenología reproductiva de los árboles determina la abundancia de las comunidades de mamíferos de talla media y grande en el escudo de Guyana de la Amazonia brasileña. Se estudiaron varias comunidades de mamíferos de talla mediana y grande en el escudo de Guyana de la Amazonia brasileña. Se realizaron muestreos en transectos lineares diurnos y nocturnos de 10 km de longitud en cinco tipos distintos de bosque, a lo largo de los que también se registraron variables del hábitat, como la diversidad de especies arbóreas, la fenología reproductiva y la productividad residual de frutos. La densidad del grupo de calculó por separado para todas las especies de mamíferos en los cinco tipos de bosque. Se llevaron a cabo análisis escalonados de regresión múltiple para determinar qué variables del hábitat permitían predecir mejor la densidad de las especies de mamíferos en los bosques muestreados. Los únicos factores determinantes de la densidad de mamíferos en los tipos de bosques estudiados fueron el área basimétrica de cada tipo de bosque, el número total de especies arbóreas en cada tipo de bosque y la fenología reproductiva de los árboles.

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The role of tectonics in the late Quaternary evolution of Brazil's Amazonian landscape

Cited by 58 publications

References 90 publications

The combined influence of riverine barriers and flooding gradients on biogeographical patterns for amphibians and squamates in south‐eastern Amazonia

The combined influence of riverine barriers and flooding gradients on biogeographical patterns for amphibians and squamates in south‐eastern Amazonia

Bird Communities in Amazonian White‐Sand Vegetation Patches: Effects of Landscape Configuration and Biogeographic Context

Tree reproductive phenology determines the abundance of medium–sized and large mammalian assemblages in the Guyana shield of the Brazilian Amazonia

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