Simulações do clima do holoceno médio na américa do sul com o modelo de circulação geral da atmosfera do CPTEC

Melo, Maria Luciene Dias de; Marengo, José A.

doi:10.1590/s0102-77862008000200007

Cited by 15 publications

(17 citation statements)

References 36 publications

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“…A, B). In the mid Holocene, the climate simulations indicate that northeastern Brazil was wetter, while central Brazil and southern and southeastern South America was much drier (de Melo and Marengo ). These findings are consistent with the climate models recovered for both Antilophia species (Fig.…”

Section: Resultsmentioning

confidence: 99%

Molecular data and distribution dynamics indicate a recent and incomplete separation of manakins species of the genus Antilophia (Aves: Pipridae) in response to Holocene climate change

Luna

Souza

Carneiro

et al. 2017

Journal of Avian Biology

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To determine a hypothetical scenario that accounts for the diversification of the two species of the genus Antilophia, we conducted multilocus molecular comparisons and species distribution modeling for the two taxa, which have distinct male plumage coloration patterns and allopatric geographic distributions, despite the high degree of genetic similarity indicated by recent studies. Three mitochondrial and three nuclear fragments were analyzed. The results indicate clear differences in the genetic diversity of the two species, but with ample sharing of haplotypes in all the markers analyzed, reflecting the absence of reciprocal monophyly, presumably due to the relatively recent and still incomplete separation of the two species. The paleoclimatic distribution models, together with the observed genetic profile indicate a recent process of divergence by geographic isolation in the ancestral populations of the two species. This scenario coincides with the recent climatic events of the South American dry diagonal, which involves the gallery forests of the Cerrado biome and the cloud forest enclaves of the seasonal tropical dry forest of the Caatinga between the late Pleistocene and the mid Holocene.

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Section: Resultsmentioning

confidence: 99%

Molecular data and distribution dynamics indicate a recent and incomplete separation of manakins species of the genus Antilophia (Aves: Pipridae) in response to Holocene climate change

Luna

Souza

Carneiro

et al. 2017

Journal of Avian Biology

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“…Further, palaeoclimate studies suggest that coastal Bahia was as wet in the mid‐Holocene (roughly 6 ka) as it is today (e.g. Melo & Marengo, ).…”

Section: Discussionmentioning

confidence: 99%

Environmental correlates of floristic regions and plant turnover in the Atlantic Forest hotspot

Saiter

Brown

Thomas

et al. 2016

Journal of Biogeography

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Aim Using a comprehensive floristic database (2616 species, 36,004 occurrence records from 128 unique localities), we model species turnover along the central region of the Atlantic Forest hotspot to (1) test whether local rivers, particularly the Rio Doce, are associated with marked biogeographical breaks, and (2) investigate how regional compositional changes correlate with geo-climatic variables.Location The central region of the Atlantic Forest in eastern Brazil (12°-22°S latitude). MethodsWe combine occurrence and geo-climatic data in a generalized dissimilarity model, obtaining a continuous prediction of species turnover across space and identifying 12 significant geo-climatic predictors of community composition. We use a two-step cluster analysis to classify the turnover map into major floristic regions based on the natural subgroups observed. We further divide each major floristic region into smaller sub-regions based on natural subgroups statistically identified by the two-step cluster analyses.Results High levels of turnover in species composition occurred around latitudes 18°-19°S, c. 50-100 km north of the Rio Doce, and concurred with shifts in availability of both humidity and energy. We identified three major floristic regions in the central region of the Atlantic Forest, which we called Bahia Interior Forests, Bahia Coastal Forests, and the Kren ak-Waitak a Forestseach of them divided into two to four subregions.Main conclusions Our results suggest that local climatic conditions, not riverine barriers, drive biogeographical shifts in this region -a finding that supports studies of current and historical determinants of the composition of the Atlantic Forest biota. Floristic composition at higher elevations (> 600 m) is clearly distinct from those in lower elevations, likely as a result of physiological constraints imposed by cooler climates in the former. Floristic regions here identified from observed communities substantially improve the maps currently employed for conservation planning in a shrinking hotspot.

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“…During the glacial period in the Pleistocene, the southern part of the Atlantic Forest became climatically unstable in comparison with its central part and served as refuge for several Neotropical species (Carnaval et al 2009). The region also underwent with a drop in rainfall during the Mid-Holocene, when its climate was drier than today (Melo and Marengo 2008). The current Araucaria forest underwent a significant retraction during the Last Glacial Maximum, and it is thought to have been rare in high altitude areas (Behling 1998).…”

Section: Hummingbirds and The Last Glacial Maximummentioning

confidence: 99%

Areas of endemism of hummingbirds (Aves: Apodiformes: Trochilidae) in the Andean and Neotropical regions

Ouvernay¹,

Ferreira²,

Morrone³

2018

Zoologia

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Using track analysis and cladistic biogeography, we identified areas of endemism of hummingbirds in the Andean and Neotropical regions. Our results point out that the current areas of endemism of hummingbirds occur in the Andes, Guiana Shield, the Lesser Antilles, western Central and North America and the Chiapas Highlands. The cladistic biogeographic analysis suggests a hummingbird distribution shaped mainly by dispersal events.

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Simulações do clima do holoceno médio na américa do sul com o modelo de circulação geral da atmosfera do CPTEC

Cited by 15 publications

References 36 publications

Molecular data and distribution dynamics indicate a recent and incomplete separation of manakins species of the genus Antilophia (Aves: Pipridae) in response to Holocene climate change

Molecular data and distribution dynamics indicate a recent and incomplete separation of manakins species of the genus Antilophia (Aves: Pipridae) in response to Holocene climate change

Environmental correlates of floristic regions and plant turnover in the Atlantic Forest hotspot

Areas of endemism of hummingbirds (Aves: Apodiformes: Trochilidae) in the Andean and Neotropical regions

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