Rainfall effects on Anomalocardia flexuosa densities on the northeastern Brazilian coast using distributed lag models

In this study, the effects of precipitation on Anomalocardia flexuosa densities were analyzed from perspective temporal delays between variables. The collections occurred bi-monthly April 2016 and February 2018 at Mangue Seco beach, Pernambuco, Brazil. Total according to category size (small, medium large), with autocorrelation cross-correlation functions, a retrospective analysis up 12 months. Distributed lag models used among maximum density was found in June 2017 (378 ind.m2) for medium-size individuals. Significant autocorrelations (total average size) precipitation. high given month followed by total individuals two also showed significant values medium-sized) precipitation, which explained more than 50% variability these groups. effect responsible increase A. months, mainly increasing shell lengths.