The historical bridge between the Amazon and the Atlantic Forest of Brazil: a study of molecular phylogeography with small mammals

  title={The historical bridge between the Amazon and the Atlantic Forest of Brazil: a study of molecular phylogeography with small mammals},
  author={Leonora Pires Costa},
  journal={Journal of Biogeography},
  • L. P. Costa
  • Published 1 January 2003
  • Environmental Science, Biology
  • Journal of Biogeography
Abstract Aim  To examine how the genetic diversity of selected taxa of forest‐dwelling small mammals is distributed between and within the major rain forest domains of Amazonia and Atlantic Forest and the intervening interior forests of Brazil, as inferred by the relationships between gene genealogies and geography. I also addressed the historical importance of the central Brazilian forests in connecting Amazon and Atlantic Forest populations of rodents and marsupials. 

The historical connections between the Amazon and the Atlantic Forest revisited

The results suggest that the SE—NW route is the most ancient connection route between the AmF and the AtF and probably was established since the Andean uplift and the formation of the South American monsoon system.

Anuran diversity indicates that Caatinga relictual Neotropical forests are more related to the Atlantic Forest than to the Amazon

The results indicate that the anurofauna of these northeastern forest relicts is most similar in composition to the areas of the Atlantic Forest included in this study, and most dissimilar to the Amazon Forest, which leads to affirm that events of biotic exchange were more frequent within theAtlantic Forest areas.

Phylogeography of the widespread spider Nephila clavipes (Araneae: Araneidae) in South America indicates geologically and climatically driven lineage diversification

Investigation of biotic diversification and geographical evolution in Amazonia and Atlantic Rain Forests with a phylogeographical study of Nephila clavipes, a rain forest dwelling spider.

Phylogeographic patterns of trans‐Amazonian vicariants and Amazonian biogeography: the Neotropical rattlesnake (Crotalus durissus complex) as an example

Test the hypothesis of a Pleistocene central Amazon corridor of dry forest or savanna that partitioned the Amazonian rain forest into western and eastern portions by investigating the phylogeography and historical demographic analysis of the Neotropical rattlesnake.

Phylogeography and genetic differentiation along the distributional range of the orchid Epidendrum fulgens: a Neotropical coastal species not restricted to glacial refugia

Bottlenecks were detected in populations from areas where population expansion events have been detected in other plant (and animal) species, suggesting that forest expansion after the Last Glacial Maximum played a role in the population fragmentation and decrease in genetic diversity in E. fulgens.

Seeing the forest through many trees: Multi‐taxon patterns of phylogenetic diversity in the Atlantic Forest hotspot

We combine phylogenetic and point locality data from selected lineages of the Atlantic Forest flora and fauna to compare spatial patterns of biodiversity sustained by the current configuration of

Recurrent connections between Amazon and Atlantic forests shaped diversity in Caatinga four‐eyed frogs

This work investigates how past biome dynamics may have caused diversification in the endemic four‐eyed frog genus Pleurodema and its historical stability is controversial.

Processos Evolutivos na Amazônia e na Mata Atlântica Evolutionary Processes in the Amazon and Atlantic Forest

The Amazon and the Atlantic Forest biomes are amongst ecosystems with high levels of biodiversity in the world, and are separated by a broad diagonal of more xeric habitats comprising the Chaco, the

Reduction of Genetic Diversity of the Harpy Eagle in Brazilian Tropical Forests

The results showed that the genetic diversity of Harpy Eagle decreased in the regions where deforestation is intense in the southern Amazon and Atlantic Forest.

Rain forest shifts through time and riverine barriers shaped the diversification of South American terrestrial pit vipers (Bothrops jararacussu species group)

To investigate (a) historical biogeographical connections and species interchange among rain forest habitats and (b) the role of riverine barriers on population divergence and speciation in the



Biogeography of South American Forest Mammals: Endemism and Diversity in the Atlantic Forest 1

We used parsimony analysis of endemicity (PAE) to investigate the distribution patterns of South American lowland forest mammals, focusing on centers of endemism and diversity. We utilized

Biogeography of South American Forest Mammals: Endemism and Diversity in the Atlantic Forest1

There is good congruence between the areas identified here and those proposed by other authors, reinforcing the value of PAE in this kind of analysis, but the hierarchical relationships among areas are not clear and sometimes discordant with other biogeographic analyses.


It is shown that, while there are few examples of taxa for which the Rio Juruá is apparently a barrier, most taxa either are largely undifferentiated throughout the basin or are sharply divided into reciprocally monophyletic mtDNA haplotype clades separable into upriver and downriver units.


  • J. CracraftR. Prum
  • Environmental Science
    Evolution; international journal of organic evolution
  • 1988
Two genera, Pionopsitta parrots and Selenidera toucans, corroborate a well known biogeographic disjunction in which taxa endemic to southern Central America and the Chocó region of northwestern South America are the sister‐group to a radiation within the Amazon basin.

Patterns of Species Distributions in the Dry Seasonal Forests of South America

Studies of the distributions of species of seasonal woodland habitats in South America by means of dot-mappung and phytosociological analyses indicate the presence of three nodal areas: the Caatingas nucleus of arid northeastern Brazil; the Misiones nucleus, which extends from Santa Cruz de la Sierra in Bolivia to Tucuman and the sierras of east Catamarca in northwestern Argentina.


Genealogical analyses and broader scale phylogeographic patterns of this species show that both clades have relationships to areas well outside the Rio Juruá basin, which suggests that the basin represents a relatively recent point of invasion between two more broadly distributed and differentiated geographic units of the species.

A study of the origin of central Brazilian forests by the analysis of plant species distribution patterns

The floristic nature of central Brazilian forests, as well as their links to other main forest formations of eastern tropical South America, is assessed by means of multivariate analyses of 106

Area‐relationships in the Neotropical lowlands: an hypothesis based on raw distributions of Passerine birds

In the future, it is suggested greater emphasis be placed on research to document patterns in the Neotropics, particularly phylogenetic patterns, than on speculation about what processes have been important for diversification.

River dynamics and the diversity of Amazon lowland forest

We suggest here that large-scale natural forest disturbance and primary succession in the lowland rainforests of the Peruvian Amazon is caused by lateral erosion and channel changes of meandering