Tree community structure reflects niche segregation of three parapatric squirrel monkey species (Saimiri spp.)

  title={Tree community structure reflects niche segregation of three parapatric squirrel monkey species (Saimiri spp.)},
  author={Fernanda Pozzan Paim and Kim Valenta and Colin A. Chapman and Adriano Pereira Paglia and Helder L. de Queiroz},
Integration between ecology and biogeography provides insights into how niche specialization affects the geographical distribution of species. [...] Key Method We sampled 6617 trees of 326 species in three habitats (high várzea, low várzea and chavascal) used by three Saimiri species, and estimated tree species richness in each of them. For each tree, we measured variables known to influence habitat use in primates, such as crown area and presence of lianas, epiphytes and hemi-epiphytes.Expand
Spatial patterns of medium and large size mammal assemblages in várzea and terra firme forests, Central Amazonia, Brazil
Habitats that remain dry for longer periods showed more mammalian occurrence, suggesting that dispersion via soil is important even for semi-arboreal species. Expand
Home sweet home? Adjustments in the ecology, behaviour and vocalisations of Amazonian squirrel monkeys inhabiting an Atlantic forest fragment
The results indicate that exotic squirrel monkeys have adjusted their activity pattern and diet in the Atlantic forest, resulting in behavioural variations consistent with the existing resources. Expand
Long‐term population monitoring of the threatened and endemic black‐headed squirrel monkey (Saimiri vanzolinii) shows the importance of protected areas for primate conservation in Amazonia
It is found that S. vanzolinii populations remained stable throughout the years, which indicates that the Mamirauá Sustainable Development Reserve has been playing an essential role on protecting this species. Expand
Parapatric pied and red-handed tamarin responses to congeneric and conspecific calls
It was found that the red-handed tamarin was more likely to emit more territorial calls when listening to pied tamarins than to its own species in sympatric areas, but found no differences in vocal responses from either species in relation to agonistic calls or duration of display in sympathetic areas. Expand


Biogeography of squirrel monkeys (genus Saimiri): South-central Amazon origin and rapid pan-Amazonian diversification of a lowland primate.
This evolutionary history is most consistent with a Young Amazon Flooded Forest Taxa model, suggesting Saimiri has always maintained a lowland wetlands niche and was able to greatly expand its range with the transition from a lacustrine to a riverine system in Amazonia. Expand
Diversity, Geographic Distribution and Conservation of Squirrel Monkeys, Saimiri (Primates, Cebidae), in the Floodplain Forests of Central Amazon
It is recommended that anthropogenic changes in the region be monitored, and conservation measures be taken to protect these primates, especially considering the endemism and very restricted range of Saimiri vanzolinii and its consequent vulnerability to extinction. Expand
Phylogeny and phylogeography of squirrel monkeys (genus Saimiri) based on cytochrome b genetic analysis
The phylogenetic and biogeographic history of Saimiri is reconsidered on the basis of mitochondrial (mtDNA) sequence data, focusing mostly on individuals originating from the Amazon Basin, and several new lineages are suggested, including S. collinsi and s. Expand
Forest structure and tree species composition of the understory of two central Amazonian varzea forests of contrasting flood heights
We investigated species composition, distribution, and forest structure of understory trees (≥1 m height, <10 cm diameter at breast height) in two late-successional varzea forests subject toExpand
Tree species composition and diversity gradients in white‐water forests across the Amazon Basin
Aim Attention has increasingly been focused on the floristic variation within forests of the Amazon Basin. Variations in species composition and diversity are poorly understood, especially inExpand
Mammal assemblage structure in Amazonian flooded and unflooded forests
A consistently impoverished fauna is found in várzea environments both in terms of primates and other non-volant mammals, and it is suggested that inundated forests should be set aside as a crucial complement to Amazonian reserves dominated by terra firme forests in future biodiversity conservation planning. Expand
River Boundaries and Species Range Size in Amazonian Primates
The role of rivers in delineating the ranges of Amazonian primate species is investigated and the extent to which differences in river size affect he chance that rivers will coincide withPrimate species' boundaries is investigated; and differences in the body size of primates influence the chance that they will occur on both sides of different rivers. Expand
Pleistocene diversification of living squirrel monkeys (Saimiri spp.) inferred from complete mitochondrial genome sequences.
It is inferred that crown lineages for extant squirrel monkeys diverged around 1.5 million years ago in the Pleistocene Epoch, with other major clades diverging between 0.9 and 1.1 MYA. Expand
Does Resource Availability Affect the Diet and Behavior of the Vulnerable Squirrel Monkey, Saimiri vanzolinii?
It is suggested that food selection changed between seasons, and S. vanzolinii focused more on fruit in the low-water period, when fruit was less available, than in the high-waterperiod, when Fruit was more available, which support the predictions of the ecological constraints model. Expand
Phytogeography, Species Diversity, Community Structure and Dynamics of Central Amazonian Floodplain Forests
The distribution of the different floodplain forest types is determined by adaptations of tree species to different levels and periods of flooding, and most habitats and species are strongly zoned along the flooding gradient. Expand