Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要:
A visual monitoring of marine mammals was carried out during a seismic acquisition survey performed in waters south of Portugal with the aim of assessing the likelihood of encountering Mysticeti species in this region as well as to determine the impact of the seismic activity upon encounter. Sightings and effort data were assembled with a range of environmental variables at different lags, and a Bayesian site-occupancy modeling approach was used to develop prediction maps and evaluate how species-specific habitat conditions evolved throughout the presence or not of seismic activity. No statistical evidence of a decrease in the sighting rates of Mysticeti by comparison to source activity was found. Indeed, it was found how Mysticeti distribution during the survey period was driven solely by environmental variables. Although further research is needed, possible explanations may include anthropogenic noise habituation and zone of seismic activity coincident with a naturally low density area. � 2016 Elsevier Ltd
Wildlife Conservation Society Africa program, Battery IV, seated CIMA, Libreville, Gabon; CIRCE (Conservation Information and Research on Cetaceans), C/Cabeza de Manzaneda 3, Pelayo-Algeciras, C�diz, Spain; Repsol Exploracion, M�ndez �lvaro, 44, Madrid, Spain
Recommended Citation:
Vilela R.,Pena U.,Esteban R.,et al. Bayesian spatial modeling of cetacean sightings during a seismic acquisition survey[J]. Marine Pollution Bulletin,2016-01-01,109(1)