Background The subfamily Stevardiinae is a diverse and widely distributed clade of freshwater
fishes from South and Central America, commonly known as “tetras” (Characidae). The …

Aim Patterns of genetic variation within freshwater fish populations may reflect the historical
impact of climate change on either sea‐level or environmental conditions. Past sea‐level …

It is widely recognized that physical landscapes can shape genetic variation within and
between populations. However, it is not well understood how riverscapes, with their complex …

With the genetic health of many plant and animal populations deteriorating due to climate
change outpacing adaptation, interventions, such as assisted gene flow (AGF), may provide …

The eastern coastal basins of Brazil are a series of small and isolated rivers that drain directly
into the Atlantic Ocean. During the Pleistocene, sea-level retreat caused by glaciations …

Aim Present Amazonian diversity patterns can result from many different mechanisms and,
consequently, the factors contributing to divergence across regions and/or taxa may differ. …

Assessments of spatial and temporal congruency across taxa from genetic data provide
insights into the extent to which similar processes structure communities. However, for coastal …

With 22 described species, Phalloceros is the most species-rich genus of Poeciliidae in
South America. Phalloceros diversity is characterized by high degrees of endemism and …

A headwater or river capture is a phenomenon commonly invoked to explain the absence of
reciprocal monophyly of genetic lineages among isolated hydrographic basins in freshwater …

Aim The effects of past climatic shifts remain enigmatic for the Amazon region, especially for
islands of savanna within the tropical forest known as “Amazonian savannas” ( AS ). These …