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Updated: Jan 24, 2026

Assessing Intertidal Populations of the Invasive European Green Crab
Published on: September 16, 2020
Towards Non-Invasive Methods to Assess Population Structure and Biomass in Vulnerable Sea Pen Fields
Giovanni Chimienti1, Attilio Di Nisio2, Anna M L Lanzolla3
1Department of Biology and CoNISMa LRU, University of Bari Aldo Moro, 70125 Bari, Italy. giovanni.chimienti@uniba.it.
Abstract:
Colonies of the endangered red sea pen Pennatula rubra (Cnidaria: Pennatulacea) sampled by trawling in the northwestern Mediterranean Sea were analyzed. Biometric parameters, such as total length, peduncle length, number of polyp leaves, fresh weight, and dry weight, were measured and related to each other by means of regression analysis. Ad hoc models for future inferencing of colonies size and biomass through visual techniques were individuated in order to allow a non-invasive study of the population structure and dynamics of P. rubra.
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