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Extinction-driven changes on mammalian communities in the Atlantic forest hotspots

Grant number: 19/00648-7
Support type:Scholarships abroad - Research Internship - Post-doctor
Effective date (Start): April 10, 2019
Effective date (End): March 30, 2020
Field of knowledge:Biological Sciences - Ecology - Applied Ecology
Principal Investigator:Mauro Galetti Rodrigues
Grantee:Fernando Henrique Martin Gonçalves
Supervisor abroad: Andrew Balmford
Home Institution: Instituto de Biociências (IB). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil
Local de pesquisa : University of Cambridge, England  
Associated to the scholarship:17/24252-0 - Anthropogenic predictors of biodiversity response tò forest fragmentation ín “The Atlantic Forest, BP.PD


The biodiversity crisis that threatens the planet can be considered the sixth major extinction event and understanding the relationship between changes in human pressures and the decline of mammalian species is necessary for identifying those species at highest risk, and for prioritizing the actions and policies required to combat their decline. The first aim of this proposal is to quantify the magnitude of mammals defaunation (including volant and non-volant species) when analyzed at the community level in the Atlantic forest of South America and to correlate with Global Terrestrial Human footprint (HFP). We hypothesize that levels of defaunation across the Atlantic Forest are elevated at regions with higher HFP and more defaunated regions overlap densely-settled coastal zones. The second aim of this proposal is to understand how human-made extinctions and human modification of distributions affects the frequency distributions of mammal body masses. We hypothesize that the predominant loss of large-bodied species increase the ecological downsizing effect and body size reduction at the community level. We will use contemporary distributions (Atlantic-series) versus estimated distributions in the absence of Anthropogenic impact (based in the climate niche) to identify which mammal communities are most defaunated and to correlate with HFP. We also will assess the ecological downsizing effect by quantifying extinction-driven changes in community-level mean and maximum body mass for all mammalian communities with recorded extinction events. This research will contribute for to understand the effects of human-made disturbances, on mammal persistence and abundance is one of the regions with the highest diversity and endemism of mammals in the world.

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
FRAGOSO, JOSE M. V.; GONCALVES, FERNANDO; OLIVEIRA, LUIZ F. B.; OVERMAN, HAN; LEVI, TAAL; SILVIUS, KIRSTEN M. Visual encounters on line transect surveys under-detect carnivore species: Implications for assessing distribution and conservation status. PLoS One, v. 14, n. 10 OCT 30 2019. Web of Science Citations: 0.

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