Pasture Land Cover Change in São Paulo State, Brazil

Oliveira, Julianne de Castro; Lamparelli, Rubens Augusto Camargo; Figueiredo, G. K. D. A.; Campbell, Eleanor E. B.; Soares, Johnny R.; Monteiro, Leonardo Amaral; Vianna, Murilo dos Santos; Jaiswal, Deepak; Bonamigo, A. F. C.; Sheehan, John; Lynd, Lee R.

doi:10.1109/lagirs48042.2020.9165662

Cited by 2 publications

(1 citation statement)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Only 3% of São Paulo original Cerrado cover remains (Nalon et al 2020). Most of the remaining Cerrado and Atlantic Forest vegetation is immersed in a human-dominated matrix composed of pasture and agriculture (i.e., monocultures), and surrounded by the highest density of paved roads in Brazil (Durigan et al 2007, CNT 2018, Oliveira et al 2020). Furthermore, P. concolor is the top-predator most killed by vehicle collision in this region (Abra et al 2021).…”

Section: Study Areamentioning

confidence: 99%

Female philopatry and unsuccessful male dispersal of a top predator in a human-modified landscape revealed by relatedness analysis

de Oliveira,

Saranholi,

Miotto

et al. 2023

Eur J Wildl Res

View full text Add to dashboard Cite

Habitat loss and fragmentation threaten population persistence because they affect the individuals' ability to disperse between remaining habitat patches and reduce areas of refuge for populations. In cougars (Puma concolor), males are predominantly dispersers while females tend to be philopatric. To examine cougar philopatry and dispersal ability in a human-dominated landscape in Brazil, we performed relatedness and spatial autocorrelation analyses based on genetic samples of cougars inhabiting forest fragments within a human-modi ed matrix, a continuous forest, and a pool of road-killed individuals. Our expectation was that females would be more related to each other and show a more positive autocorrelation than males in areas with less human disturbance because male dispersal would not be constrained. We found similarly high relatedness and a positive spatial autocorrelation at the shortest spatial scale (0-100 km) for both males and females from the forest fragments within a human-modi ed matrix. We also detected higher male:female ratio from roadkills, likely due to males' higher tendency to disperse. Our results con rm female philopatry in the forest fragments. However, high relatedness and positive autocorrelation also observed for males in these fragments suggest male kin clustering, which could be a result of unsuccessful dispersal. Cougar unsuccessful dispersal has already been reported in North America in response to human-altered landscapes, but here we present the rst evidence of this process in a South American cougar population. Further research is warranted to assess the speci c causes of male unsuccessful dispersal and how it can affect species persistence in human-dominated landscapes.

show abstract

Section: Study Areamentioning

confidence: 99%

Female philopatry and unsuccessful male dispersal of a top predator in a human-modified landscape revealed by relatedness analysis

de Oliveira,

Saranholi,

Miotto

et al. 2023

Eur J Wildl Res

View full text Add to dashboard Cite

show abstract

Female philopatry and unsuccessful male dispersal of a top predator in a human-modified landscape revealed by relatedness analysis

Oliveira

Saranholi

Miotto

et al. 2023

Preprint

View full text Add to dashboard Cite

Habitat loss and fragmentation threaten population persistence because they affect the individuals’ ability to disperse between remaining habitat patches and reduce areas of refuge for populations. In cougars (Puma concolor), males are predominantly dispersers while females tend to be philopatric. To examine cougar philopatry and dispersal ability in a human-dominated landscape in Brazil, we performed relatedness and spatial autocorrelation analyses based on genetic samples of cougars inhabiting forest fragments within a human-modified matrix, a continuous forest, and a pool of road-killed individuals. Our expectation was that females would be more related to each other and show a more positive autocorrelation than males in areas with less human disturbance because male dispersal would not be constrained. We found similarly high relatedness and a positive spatial autocorrelation at the shortest spatial scale (0-100 km) for both males and females from the forest fragments within a human-modified matrix. We also detected higher male:female ratio from roadkills, likely due to males’ higher tendency to disperse. Our results confirm female philopatry in the forest fragments. However, high relatedness and positive autocorrelation also observed for males in these fragments suggest male kin clustering, which could be a result of unsuccessful dispersal. Cougar unsuccessful dispersal has already been reported in North America in response to human-altered landscapes, but here we present the first evidence of this process in a South American cougar population. Further research is warranted to assess the specific causes of male unsuccessful dispersal and how it can affect species persistence in human-dominated landscapes.

show abstract

Pasture Land Cover Change in São Paulo State, Brazil

Cited by 2 publications

References 26 publications

Female philopatry and unsuccessful male dispersal of a top predator in a human-modified landscape revealed by relatedness analysis

Female philopatry and unsuccessful male dispersal of a top predator in a human-modified landscape revealed by relatedness analysis

Female philopatry and unsuccessful male dispersal of a top predator in a human-modified landscape revealed by relatedness analysis

Contact Info

Product

Resources

About