Below are summaries that highlight some the team's current activities.
Jocelyn and I attended the Xerces Society Pollinator Conservation Short Course at Penn State. We met with a collaborator and learned the ins-and-outs for rapid assessments of pollinators and their habitats in preparation for a new project assessing the biodiversity and ecosystem services of agricultural landscapes around the greater Philadelphia region.
The team's first visit to the Academy of Natural Sciences here in Philadelphia was a success! We meet with several collaborators and began our work there estimating the functional traits of island lizards.
Wendy Jesse and the Dutch Antilles herp crew caught and documented the first known instance of the Saban anole (Anolis sabanus) colonizing St. Eustatius. The Saban anole has never been known to be accidentally introduced outside of Saba Island where it is endemic. There is plenty of shipping traffic between the two islands, and this anole may have hitchhiked on one of those ships. Read about it here.
Phylogeny of globally traded plants with rates of change in tonnage produced over the last 50 years. Produced for the Macroevolution of Ecosystem Services from Trees SESYNC working group.
Quanta magazine wrote a nice indepth profile of my work on Island Biogeography of the Anthropocene here
Phylogenetic diversity of the global food trade. Maps are based on the plant species produced in each country and reported to the FAO. Produced for the Macroevolution of Ecosystem Services from Trees SESYNC working group.
Estimates of future amphibian and reptile extinctions across the Caribbean. Redder islands are expected to lose more native species. Darker shading within islands indicates highly impacted landcover - Wendy Jesse
Output of a stochastic model simulation of species ranges. Species can exhibit phylogenetic signal in their range centers and their range sizes. A) An example with phylogenetic attraction (closely related species have similar range centers and sizes). B) An example where closely related species have similar range centers and sizes, but also repulse each other from coexisting at the exact same site. C) The balanced phylogeny used in the simulations with species 2D-range probabilities plotted on the tips. Code to produce the simulation is part of the soon to be released pez R package and has been used in a collaboration to unify phylogenetic diversity metrics in an iDiv workshop.
Apparent competition from a dam (i.e., zooplankton outflows fed on by fish) causes phylogenetic structure in macroinvertebrate communities. a) Phylogenetic alpha diversity (phylogenetic species variability) of macroinvertebrates sampled along the Laja River and at three dam-tailwater communities in other rivers is compared to expectations of phylodiversity from five community assembly models. b-d) Principal coordinates ordinations of distance matrices of phylogenetic community dissimilarity values measure macroinvertebrate phylogenetic beta diversity. Dotted lines encompass tailwater sites and dashed lines encompass riverine sites. b) Ordination of phylogenetic beta diversity, PCD = PCDc × PCDp, in relation to the fish diet selectivity simulations. c) Ordination of PCDc, the proportion of shared species between community pairs. d) Ordination of PCDp, community similarity based on the phylogenetic relatedness of unshared species.