{"id":14446,"date":"2021-01-28T15:00:11","date_gmt":"2021-01-28T15:00:11","guid":{"rendered":"https:\/\/conexoesamazonicas.org\/?post_type=artigos&p=14446"},"modified":"2025-06-16T02:43:53","modified_gmt":"2025-06-16T02:43:53","slug":"mamiferos-potenciais-para-investigar-conexoes-historicas-entre-a-amazonia-e-a-mata-atlantica2","status":"publish","type":"post","link":"https:\/\/conexoesamazonicas.org\/en\/mamiferos-potenciais-para-investigar-conexoes-historicas-entre-a-amazonia-e-a-mata-atlantica2\/","title":{"rendered":"Potential mammals to investigate historical connections between Amazonian and Atlantic forests"},"content":{"rendered":"
\n\t\t\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t

Potential mammals to investigate historical connections between Amazonian and Atlantic forests<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t
<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t
<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

28th January 2021 | Duration of reading: 8 min<\/p>

By Arielli Fabr\u00edcio Machado <\/i><\/p>

\u00a0\u00a0 \u00a0 \u00a0 \u00a0 Amazonian and Atlantic forests are currently separated by a wide area of dry and seasonally dry environments known as the dry diagonal<\/a>. However, inside the dry diagonal there is a mosaic of forests (for example mountain forests and riparian forests). These forests are considered fragments of historical bridges that once connected the Amazonian and Atlantic forests.<\/p>

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Muitos dados f\u00f3sseis e clim\u00e1ticos, at\u00e9 dados de distribui\u00e7\u00e3o e gen\u00e9tica das esp\u00e9cies, revelam que essas florestas foram conectadas no passado por pelo menos tr\u00eas rotas de conex\u00e3o. Um dos primeiros a descrever essas rotas foi Francis Por, em 1992, no livro Sooretama<\/em> (a word that means \u201crefuge for forest animals\u201d in Tupi-Guarani).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t
<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t
<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Tropical humid forests in South America in green highlighting Amazonia and the Atlantic Forest and their past connections through 1) the Northeastern route, 2) the Central route and 3) the Southwestern route. Modified from Machado et al. 2020<\/a><\/span>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t
<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Currently, according to a review published by Ledo & Colli (2017)<\/a>, we know that at least 50 animal species reveal these connections. However, the current data availability, including geographic distribution data and genetic data for several species from different taxonomic groups, would certainly allow us to reevaluate the past use of these connections based on a much larger set of species.<\/p>

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Assessing the connections between Amazonia and the Atlantic Forest will give us insights about the past changes in forest cover and the processes behind the current complexity of these forests. Such insights can be useful in forecasts about future changes in forest cover and may thus provide an important tool for forest biodiversity conservation and maintenance.<\/p>

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 To assist future studies on historical connections between Amazonian and Atlantic forests, we conducted a study that compiled data on potential mammal species for investigating the historical connections between Amazonia and the Atlantic Forest and which may serve as a basis for future studies. We compiled geographic distribution data from the International Union for Conservation of Nature (IUCN<\/a>) Red List of Threatened Species database, which provides various data for species worldwide. We also compiled all the genetic data that was available for these species in the Genbank<\/span><\/a>database, one of the largest public databases of genetic sequences<\/a><\/span>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Mam\u00edferos que revelam conex\u00f5es entre a Amaz\u00f4nia e a Mata Atl\u00e2ntica, incluindo esp\u00e9cies amea\u00e7adas de extin\u00e7\u00e3o. A) Pecari tajacu<\/em>, catetu; B) Bradypus variegatus<\/em>, sloth; C) Alouatta caraya<\/em>, black-and-gold howler monkey; D) Panthera onca<\/em>, jaguar; E) Leopardus tigrinus<\/em>, oncilla; F) Tapirus terrestres<\/em>, tapir; G) Tamandua tetradactyla<\/em>, tamandu\u00e1-mirim. Cr\u00e9dito das imagens: A) Gabriel P. Ib\u00e1\u00f1ez<\/a>,<\/span> B) Atlas of Living Australia<\/a><\/span>, C) Juan C. Munoz<\/a>, D) Erica W.<\/a>, E) Escola Educa\u00e7\u00e3o<\/a>, F) Charles J. Sharp<\/a>, G) Sinara Conessa<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Our study revealed over one hundred mammal species with high availability of genetic data (about 176 thousand sequences). This highlights their potential for phylogeographic<\/a> studies to investigate the past connections between Amazonia and the Atlantic Forest. In our publication we provide a full list of the compiled data and an access link to the database containing the filtered genetic information for each species. Hence, we hope to facilitate and promote future studies on these connections based on mammal species.<\/p>

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0Among the different mammalian groups, armadillos and bats showed the greatest availability of data as they are of public health interest. However, also the other mammalian groups showed a high availability of genetic data and consequently a high potential for further studies focusing on the past connections between Amazonia and the Atlantic Forest. This result reveals the extreme importance of making scientific data available for the development of new studies that go beyond the focus areas of the projects that generated the data.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t
<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Availability of genetic data for groups of mammals in the Amazon and the Atlantic Forest. Reprinted from Machado et al. 2020<\/a><\/span>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t
<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Neste estudo, tamb\u00e9m avaliamos os padr\u00f5es de distribui\u00e7\u00e3o das esp\u00e9cies testando as rotas de conex\u00f5es sugeridas por estudos anteriores. Encontramos um padr\u00e3o diferente do proposto anteriormente (detalharemos esses resultados em uma pr\u00f3xima divulga\u00e7\u00e3o cient\u00edfica aqui no site do Conex\u00f5es Amaz\u00f4nicas). Os resultados desse estudo mostram o potencial dos mam\u00edferos para investigar as conex\u00f5es entre a Amaz\u00f4nia e a Mata Atl\u00e2ntica e traz novos conhecimentos sobre essas conex\u00f5es.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t
<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t
<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t
<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 We emphasize that just like mammals, several other groups of animal and plant species have the potential to bring new information about the historic connections and past changes in forest cover through already available data. Crucially, our study can thus serve as a basis for studies that aim to understand both past and future environmental change and their influence on biodiversity.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t
<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

\u00a0<\/strong>Science is done collaboratively<\/strong><\/p>

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 This research was part of Arielli F. Machado\u2019s Ph.D. thesis in Ecology at UFRGS. The work was completed under the guidance of Professor Leandro Duarte<\/a>, and was done in collaboration with Dr. Maria Jo\u00e3o R. Pereira<\/a> from UFRGS Cleuton L. Miranda<\/a> from the PPG in Zoology at Museu Paraense Em\u00edlio Goeldi at Universidade Federal do Par\u00e1 (UFPA), Dr Camila D. Ritter<\/a> from the University of Duisburg-Essen inGermany and PhD candidate Yennie K. Bredin at the Norwegian University of Life Sciences inNorway. This research had the financial support of the Brazilian government through CNPq.<\/a><\/p>

Want to know more? Access the links below!\u00a0<\/strong><\/p>

Laborat\u00f3rio de Evolu\u00e7\u00e3o Sistem\u00e1tica e Ecologia de Aves e Mam\u00edferos – BiMa-Lab (Link<\/span><\/a>)<\/p>

Batalha-Filho, H., Fjelds\u00e5, J., Fabre, P. H., Miyaki, C. Y. (2013). Connections between the Atlantic and the Amazonian forest avifaunas represent distinct historical events.\u00a0Journal of Ornithology, 154(1): 41-50. (Link<\/a><\/span>)<\/p>

Costa, L. P. (2003). The historical bridge between the Amazonia and the Atlantic Forest of Brazil: a study of molecular phylogeography with small mammals. Journal of Biogeography, 30: 71-86. (Link<\/a><\/span>)<\/p>

Ledo, R. M. D. &, Colli, G. R. (2017). The historical connections between the Amazonia and the Atlantic Forest revisited.\u00a0Journal of Biogeography, 44(11): 2551-2563. (Link<\/a><\/span>)<\/p>

Machado, A. F., Ritter, C. D., Miranda, C. L., Pereira, M. R., Duarte, L. (2020). Potential mammalian species for investigating the past connections between Amazonia and the Atlantic Forest. (Link<\/a><\/span>)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Arielli Fabr\u00edcio Machado is a biologist from the Federal University of Santa Maria (UFSM) and holds a master's degree in Ecology from the National Institute for Research in the Amazon (INPA) and a PhD in Ecology from the Federal University of Rio Grande do Sul (UFRGS). More information on\u00a0Lattes<\/a>,\u00a0ResearchGate<\/a>\u00a0and\u00a0Google Scholar<\/a>.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t

Leia tamb\u00e9m<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t<\/i>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t Voltar<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t