Life on earth mounds: What controls biodiversity on natural islands in hyperseasonal tropical savannas?

Henrique Augusto Mews, Universidade Federal de Rondonópolis in Brazil, discusses his article: Unravelling the drivers of island species richness in tropical savannas Many landscapes contain “island-like” habitats: patches of suitable conditions surrounded by an inhospitable matrix. How species diversity is regulated in these systems remains surprisingly poorly understood. In tropical savannas, such as the Cerrado…

Testing the Island Rule in plants: A global study of leaf size evolution

Xoaquín Moreira, Misión Biológica de Galicia (CSIC, Spain), discusses his article: Global insular leaf size shifts follow the island rule, independently of insect herbivory and macroclimate This work came out of a collaboration between 17 institutions across five continents, all brought together by a shared interest in island biogeography. By combining data, expertise, and fieldwork…

Solving the loss of divarication debate on New Zealand’s outlying islands

Riccardo Ciarle, Victoria University of Wellington in Aotearoa New Zealand, discusses his article: Ancestral state reconstruction sheds new light on the loss of divarication hypothesis on New Zealand’s outlying islands The background If you step into the New Zealand bush, the first thing you’ll see will be towering podocarps, lofty tree ferns, and a wide…