messDiv

macroeco hearts macroevo

Brian would like folks to write 6 case studies

alpha/beta

Outline of paper:

• Intro
• Theory box to motivate hypotheses
• Case studies
  • Hawaii trees
  • Azores arthropds
  • Galapagos snails
  • Maybe Rosie’s spiders

In the larger group discussion we talked about controlling for spatial and environmental “volume” when calculating gamma

genomics of early speciation

• Importance of admixture versus standing genetic diversity to produce adaptive radiations
• Could use Angela’s nematode, excitingly those data include traits like pH tollerance
• Soliciting further datasets
• Could these emperical insights help ground the MESS model?

island vs. mainland

The group likes the idea of applying a BiSSE-like model being developed in Rampal’s lab. This model would consider how the states of being an island endemic, mainland endemic, or cosmopolitan influences speciation rate in a full likelihood approach.

Some comments came up:

• What about area effects—islands are small and that’s why their radiations are thought to be interesting
• Latitude also matters for diversification so should be included

There were two proposed solutions:

• One is to include these as additional covariates in the BiSSE-like model (e.g. speciatoin is dependent not only on island versus mainland, but also the area covered by the lineage and its mean latitude)
• The other idea is a more data-driven approach: take random spatially-explicit samples that control for area and latitude (island “coockie cutters”) and compare clade richness and age of the true islands to island coockie cutter samples from mainlands