Brazilian montane rainforest expansion induced by Heinrich Stadial 1 event

Author(s):Show less -

Pinaya, Jorge L. D. ^[1] ; Cruz, Francisco W. ^[2] ; Ceccantini, Gregorio C. T. ^[3] ; Correa, Pedro L. P. ^[1] ; Pitman, Nigel ^[4] ; Vemado, Felipe ^[5] ; Lopez, Maria del C. Armen S. ^[5] ; Pereira Filho, Augusto J. ^[5] ; Grohmann, Carlos H. ^[6] ; Chiessi, Cristiano M. ^[7] ; Strikis, Nicolas M. ^[8] ; Horak-Terra, Ingrid ^[9] ; Pinaya, Walter H. L. ^[10] ; de Medeiros, Vanda B. ^[2] ; Santos, Rudney de A. ^[2] ; Akabane, Thomas K. ^[2] ; Silva, Maicon A. ^[3] ; Cheddadi, Rachid ^[11] ; Bush, Mark ^[12] ; Henrot, Alexandra-Jane ^[13] ; Francois, Louis ^[13] ; Hambuckers, Alain ^[14] ; Boyer, Frederic ^[15] ; Carre, Matthieu ^[16] ; Coissac, Eric ^[15] ; Ficetola, Francesco ^[15] ; Huang, Kangyou ^[17] ; Lezine, Anne-Marie ^[16] ; Nourelbait, Majda ^[11] ; Rhoujjati, Ali ^[18] ; Taberlet, Pierre ^[15] ; Sarmiento, Fausto ^[19] ; Abel-Schaad, Daniel ^[20] ; Alba-Sanchez, Francisca ^[20] ; Zheng, Zhuo ^[17] ; De Oliveira, Paulo E. ^{[3, 2, 4]}

Affiliation:Show less -

^[1] Univ Sao Paulo, Politech Sch, Sao Paulo, SP - Brazil

^[2] Univ Sao Paulo, Inst Geosci, Sao Paulo, SP - Brazil

^[3] Univ Sao Paulo, Inst Biosci, Sao Paulo, SP - Brazil

^[4] Field Museum Nat Hist, Sci Act, Chicago, IL 60605 - USA

^[5] Univ Sao Paulo, Inst Astron & Geophys & Atmospher Sci, Sao Paulo, SP - Brazil

^[6] Univ Sao Paulo, Inst Energy & Environm, Sao Paulo, SP - Brazil

^[7] Univ Sao Paulo, Sch Arts Sci & Humanities, Sao Paulo, SP - Brazil

^[8] Fed Fluminense Univ, Niteroi, RJ - Brazil

^[9] Fed Univ Jequitinhonha & Mucuri Valleyst, Inst Agr Sci, Unai, MG - Brazil

^[10] Fed Univ ABC, Ctr Math Computat & Cognit, Santo Andre, SP - Brazil

^[11] Univ Montpellier, ISEM, CNRS, IRD, EPHE, Montpellier - France

^[12] Florida Inst Technol, Dept Biol Sci, Melbourne, FL 32901 - USA

^[13] Univ Liege, UR SPHERES, Unite Modelisat Climat & Cycles Biogeochim, Liege - Belgium

^[14] Univ Liege, UR SPHERES, Unite Biol Comportement, Liege - Belgium

^[15] Univ Grenoble Alpes, Lab Ecol Alpine, CNRS, Grenoble - France

^[16] Sorbonne Univ UPMC, LOCEAN Lab, CNRS, IRD, MNHN, Paris - France

^[17] Sun Yat Sen Univ, Sch Earth Sci & Geol Engn, Guangzhou, Guangdong - Peoples R China

^[18] Univ Cadi Ayyad, Lab Georessources, Unite Rech Associee CNRST URAC 42, Fac Sci & Tech, Marrakech - Morocco

^[19] Univ Georgia, Dept Geog, Neotrop Montol Collab, Athens, GA 30602 - USA

^[20] Univ Granada, Fac Ciencias, Dept Bot, Granada, Andalucia - Spain

• Document type: Journal article
• Source: SCIENTIFIC REPORTS; v. 9, NOV 29 2019.
• Web of Science Citations: 0

Abstract

The origin of modern disjunct plant distributions in the Brazilian Highlands with strong floristic affinities to distant montane rainforests of isolated mountaintops in the northeast and northern Amazonia and the Guyana Shield remains unknown. We tested the hypothesis that these unexplained biogeographical patterns reflect former ecosystem rearrangements sustained by widespread plant migrations possibly due to climatic patterns that are very dissimilar from present-day conditions. To address this issue, we mapped the presence of the montane arboreal taxa Araucaria, Podocarpus, Drimys, Hedyosmum, Ilex, Myrsine, Symplocos, and Weinmannia, and cool-adapted plants in the families Myrtaceae, Ericaceae, and Arecaceae (palms) in 29 palynological records during Heinrich Stadial 1 Event, encompassing a latitudinal range of 30 degrees S to 0 degrees S. In addition, Principal Component Analysis and Species Distribution Modelling were used to represent past and modern habitat suitability for Podocarpus and Araucaria. The data reveals two long-distance patterns of plant migration connecting south/southeast to northeastern Brazil and Amazonia with a third short route extending from one of them. Their paleofloristic compositions suggest a climatic scenario of abundant rainfall and relative lower continental surface temperatures, possibly intensified by the effects of polar air incursions forming cold fronts into the Brazilian Highlands. Although these taxa are sensitive to changes in temperature, the combined pollen and speleothems proxy data indicate that this montane rainforest expansion during Heinrich Stadial 1 Event was triggered mainly by a less seasonal rainfall regime from the subtropics to the equatorial region. (AU)

• FAPESP's process: 15/50683-2 - Vulnerability of populations under extreme scenarios
• Grantee: Paulo Eduardo de Oliveira
• Support Opportunities: Research Program on Global Climate Change - Thematic Grants
• FAPESP's process: 16/04982-0 - Enabling integrated research through monitoring of biodiversity and climate measurements
• Grantee: Pedro Luiz Pizzigatti Corrêa
• Support Opportunities: Research Grants - eScience and Data Science Program - Regular Program Grants
• FAPESP's process: 13/50297-0 - Dimensions US-BIOTA São Paulo: a multidisciplinary framework for biodiversity prediction in the Brazilian Atlantic forest hotspot
• Grantee: Cristina Yumi Miyaki
• Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
• FAPESP's process: 17/50085-3 - PIRE: climate research education in the Americas using tree-ring speleothem examples (PIRE-CREATE)
• Grantee: Francisco William da Cruz Junior
• Support Opportunities: Research Projects - Thematic Grants