Effects of anthropogenic noise as a source of acoustic stress in wild populations of Hippocampus guttulatus in the Ria Formosa, south Portugal

TitleEffects of anthropogenic noise as a source of acoustic stress in wild populations of Hippocampus guttulatus in the Ria Formosa, south Portugal
Publication TypeJournal Article
Year of PublicationSubmitted
AuthorsPalma, Jorge, Magalhães Marisa, Correia Miguel, and Andrade José Pedro
JournalAquatic Conservation: Marine and Freshwater Ecosystems
ISBN Number1052-7613
EndNote Rec Number12456
Abstract

Abstract This study evaluated the effects of underwater noise as a source of acoustic stress in the wild populations of Hippocampus guttulatus in the Ria Formosa, south Portugal. Two different scenarios of underwater noise were tested: transient motor boat sound (63.4–127.6 dB) and constant sound produced by the motor of the boat directly above the animals (up to 137.1 dB). Observations were obtained in the wild between 4 and 10 m depth throughout a 3 min period, using a video camera and a hydrophone set, and compared with a control sample. A significant increase (P