Fig. 3From: Population structure, growth and production of Thoracophelia furcifera (Polychaeta: Opheliidae) on a sandy beach in Southern BrazilHistogram of fortnightly frequency distribution of size classes (Wd8S) and cohorts of the T. furcifera population at Barra da Lagoa Beach, southern Brazil, from May 2008 to April 2009. Grey bars represent the new cohort in the populationBack to article page