Neotropical Paleoecology Research Group

Neotropical Paleoecology Research Group

(NPRG)

Marco F. Raczka

PhD candidate

Email: mraczka2009@my.fit.edu

Marco F. Raczka

Marco Raczka at Lagoa Branca, Brazil.

Research interests:

I completed a Bachelor’s in Biological Science from Universidade Guarulhos, Brazil in 2006 and received a Master’s degree in Geoenvironmental Analysis in 2009. As part of my master’s degree research I visited the PaleoLab for three months (from January to April 2008). After graduating, I moved to Florida and started the doctoral program at Florida Institute of Technology in 2010.

My Ph.D. research looks at the causes and consequences of the Pleistocene megafaunal population collapse in the central Andes (Lake Huinaymarca and Lake Llaviucu) and Southeastern Brazil (Lake Olhos D’Água, Lake Mares, and Lake Branca). I am specifically interested in determining if the megafauna populations collapsed prior to, or was coincident with human arrival, and whether megafaunal density was related to the rise of novel plant communities and altered fire regimes. I use spores of Sporormiella, a dung fungus readily preserved in lake sediments, as a proxy for these animals. Sporormiella concentration has been proven to be an excellent proxy for detecting the presence of megaherbivores in past environments.

Publications:

Meyer, K. E. B; Cassino, R. F; Lorente, F. L; Raczka, Marco; Parizzi, M. G. Paleoclima e paleoambiente do cerrado durante o Quaternário com base em analyses palinológicas. In: Carvalho, I. S; Garcia, M.J; Lana, C. C; Strohschoen Jr., O. (Org.). Paleontologia: Cenários de Vida - Paleoclimas. 1ed.: Interciência, 2014, v. 5, p. 391-408.

Bush, M; Oliveira, P. E; Raczka, Marco ; Gosling, W. D; Mayle, F. E; McMichael, C. H; Urrego, D. H. Paleoclimates of Amazonia: An Ice-Age view. In: Carvalho, I. S; Garcia, M.J; Lana, C. C; Strohschoen Jr., O.. (Org.). Paleontologia: Cenários de Vida - Paleoclimas. 1ed.: Interciência, 2014, v. 5, p. 341-356.

Bush, M; McMichael, C. H; Raczka, Marco; Toledo, M. B; Power, M. J; Mayle, F. E; Oliveira, P. E. The Holocene of the Amazon. In: Carvalho, I. S; Garcia, M.J; Lana, C. C; Strohschoen Jr., O.. (Org.). Paleontologia: Cenários de Vida - Paleoclimas. 1ed.: Interciência, 2014, v. 5, p. 357-372.

Crystal H. McMichael; Mark B. Bush; Miles R. Silman; Dolores R. Piperno; Marco F. Raczka; Luiz C. Lobato; Monica Zimmerman; Stephen Hagen; Michael Palace. Historical fire and bamboo dynamics in western Amazonia. Journal of Biogeography, v. 40, p. 299-309, 2013.

Raczka, M. F; De Oliveira, P. E; Bush, M; McMichael, C. Two paleoecological histories spanning the period of human settlement in southeastern Brazil. Journal of Quaternary Science, v. 28, p. 144-151, 2013.

C.H. McMichael; D.R. Piperno; M.B. Bush; M.R. Silman; A.R. Zimmerman; M.F. Raczka; L.C. Lobato. Sparse pre-Columbian human habitation in Western Amazonia. Science, v. 336, p. 1429-1431, 2012.

Piasentin, A. M; Semensatto, D; Saad, A.R; Monteiro Junior, A. J; Raczka, M. F. Índice de Qualidade da Água (IQA) do Reservatório Tanque Grande, Guarulhos (SP): análise sazonal e efeitos do uso e ocupação do solo. Geociências, v. 28, p. 305-317, 2009.