The geologic and climatic dynamism of the landscape can drive the pace of speciation and extinction of the organisms that occupy it. However, regional abiotic histories are often complex, making the study of how they have shaped the species diversity of mainland biotas challenging! Oceanic islands, however, offer extraordinary opportunities for unravelling the nature of diversity dynamics. Volcanic hotspot archipelagoes like the Hawaiian islands are sequentially formed, effectively providing multiple temporal snapshots of diversity. Furthermore, each island has a tractable and relatively predictable geologic trajectory, which allows us to characterize the role of landscape dynamism on species diversification. Here, using a novel geologically-informed diversification model of the relationship between species richness and changing island area, we infer how species richness of various endemic plant and animal clades have changed over their macroevolutionary history. The results suggest that landscape dynamism can drive the evolutionary dynamics of clades over large temporal scales, including long-term and ongoing evolutionary decline.
Lim Junying is a PhD candidate at UC Berkeley. His research lies at the intersection between macroevolutionary dynamics, niche evolution, community ecology and biogeography. He is especially interested in how large scale geologic and climatic dynamism has shaped the spatial and temporal variation in Earth’s biota up to the present day, and how ecological and evolutionary processes may play out in an era of global climate change.
Date & Time: 27 Feb (Tue) 3pm
Venue: NUS Block S2 Level 4 Seminar Room 1
The event is an informal discussion about research in NUS that might be useful for students thinking ahead toward internship, UROPS, FYP, or graduate studies.
Three graduate students, representing research labs in Environmental Biology & Biomedical Sciences will share their research experiences.
Join them on Mon 25 Sep 2017: 6.30pm – 7.30pm @ S2-04 Seminar Room 1 (Blk S2 Level 4)
Do indicate your interest so that we know how many students to expect – tinyurl.com/chalk2017.
If you have any other queries, feel free to email Jerome Kok (firstname.lastname@example.org).
DBS graduate students Jerome Kok, Dorothy Cheong & Kenny Chua present a chat about about research opportunities in NUS. This is a lovely opportunity for undergraduates to get some advice from your seniors and to ask some frank questions.
Thu 27 Oct 2016: 6.30pm – 7.30pm @ Seminar Room 1 (S2-0414)
Sign up at http://tinyurl.com/dbs-gradchat
Thu 10 Mar 2016: 7.00pm @ LKCNHM LL2
Barbara Ismay & Rudolf Meier on Diptera and > 1,000 dipteran species in Singapore’s mangroves
Please register (for dinner catering) at: tinyurl.com/lkcnhm-diptera10mar2016