Pragyadeep Roy
pragyr.bsky.social
Pragyadeep Roy
@pragyr.bsky.social
Evolutionary Biologist | Hip Hop Artist
Currently PhD student
@CCMB_CSIR
Reposted by Pragyadeep Roy
In this talk I focus on work with my the wonderful @lhliow.bsky.social where we spent time re-reading Simpson's Mode and Tempo in Evolution, figuring out horotely, bradytely, and tachytely. The result of that work is here besjournals.onlinelibrary.wiley.com/doi/full/10....
Simpson's tachytely or bradytely? The importance of quantifying rate uncertainty
The spectacular variation in species forms and richness across space and time can be explored using sophisticated and powerful tools recently developed by evolutionary modellers. In this contribut...
besjournals.onlinelibrary.wiley.com
August 19, 2025 at 11:00 AM
5/5

In summary, the peninsular India plate experienced “idiosyncratic” biotic diversification. These insights into how past climate and habitat stability influenced biotic diversification can prove crucial especially under today's climatic crisis.
October 10, 2025 at 9:34 PM
4/5

And, the remaining 16 groups had quite dynamic diversification trajectories due to non-uniformities in speciation and extinction rates across time, influenced by global paleotemperature and mid-Miocene intensification of aridification and monsoons.
October 10, 2025 at 9:33 PM
Continued 3/5

Furthermore we inferred a prevalence of gradual accumulation of species diversity in the peninsular Indian landscape in 17 out of 33 groups, suggesting important role of habitat stability in tropical ecosystems.
October 10, 2025 at 9:32 PM
Continued 2/5

We found that there's immense disparity in diversification rates across these groups and more closely related species share similar diversification rates. Additionally the age of a group was found to strongly govern its diversification rate.
October 10, 2025 at 9:30 PM
Continued 1/5

In this paper we explored diversification dynamics (overall rate and temporal patterns) of 33 endemic groups of animal and plant species from peninsular India.
October 10, 2025 at 9:28 PM