The Marine Macroalgae Collection from Herbarium João de Carvalho e Vasconcellos (LISI)—140 Years of History
2024
Santos, João Canilho | Paes, Paula | Arsénio, Pedro | Figueira, Rui | Costa, José Carlos | Lopes, Margarida Dionísio | Cotrim, Helena | Espírito Santo, Dalila
Herbaria phycological collections have approximately one million 700 thousand specimens preserved in European herbaria, a significantly lower number when compared to vascular plants, due to factors such as greater sampling difficulty and fewer specialists. Several studies report that coastal systems have undergone dramatic ecological changes in the last 150 years, with macroalgae being a particularly affected group. Thus, macroalgal herbaria are essential sources for the study and conservation of this biodiversity, as well as a pillar that responds to several ecological questions. Despite having a large coastline, Portugal’s phycological collections are scarce, poorly developed, and practically inaccessible digitally. In 2021/2022, all the phycological specimens present at LISI were the focus of this exploratory project whose objective was to catalog them, taxonomically review the specimens and place them at the service of the scientific community through the incorporation of digitized vouchers into online databases. Three marine collections were constituted and studied, accounting for a total of 852 vouchers and more than 1800 specimens, being the Portuguese Marine Macroalgae Collection, the oldest digitized phycological collection available in Portugal. This project provides an opportunity for other educational institutions to embrace their long-neglected collections as well.
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