We used threshold models to estimate the change in "grade" of terrestriality and found it is 10-100x harder to move to beach/forest from intertidal/estuarine. Perhaps #crabs inform on the otherwise hidden processes of #terrestrialization in early arthropods 400+ mya!
4/4

We assembled new datasets describing the natural history, ecology, and physiology of #terrestrialization (exciting to include personal field observations - not easy when you usually study fossils). Left=marine, middle=direct path to land, right=path through freshwater. 2/4

Associating amphipods with water is generally true, but not always. Talitrid amphipods are one of the few groups to make the transition to land after the initial rush in the Silurian-Devonian. Not all of them, mind you. The so-called 'landhoppers' are an Indo-Pacific phenomenon. I think they warrant more study to understand terrestrialization.
#biogeography #terrestrialization
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We used threshold models to estimate the change in "grade" of terrestriality and found it is 10-100x harder to go from intertidal/estuarine to beach/riverbank/forest. Perhaps #crabs inform on the processes of #terrestrialization in early arthropods 400+ mya! 🌴🦀 4/5

We assembled new datasets describing the natural history of #terrestrialization (exciting for me because it included personal field observations - not easy when you usually study fossils). Left=marine, middle=direct path to land, right=path through freshwater. 2/5