The Hewatt Transect

From October 1931 through June 1933, Hopkins Marine Station (HMS) graduate student Willis G. Hewatt collected observational data along a strip of intertidal rocks 108 yards long and one yard wide. His research included an inventory of invertebrates living along the transect line, environmental conditions, breeding seasonality, and species succession. In 1993, two undergraduate students at HMS, Sarah Gilman and Rafe Sagarin, resampled the transect line to see if there were changes in species distributions. Sagarin continued the surveys as a graduate student and beyond, until he was killed in an accident in 2015. Surveys are now continued annually with the participation of students and staff at the marine station. This collection pulls together materials related to research along what is now known as the Hewatt-Sagarin Transect.

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