[MARMAM] NEW PAPER: Bayesian spatial modeling of cetacean sightings during a seismic acquisition survey

Ursula Pena ursulapena at gmail.com
Thu May 26 15:06:14 PDT 2016


Dear MARMAM members,

We are pleased to announce that the following paper has been published on
Marine Pollution Bulletin:


Raul Vilela , Ursula Pena  , Ruth Esteban  , Robin Koemans:  Bayesian
spatial modeling of cetacean sightings during a seismic acquisition survey



ABSTRACT: 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


A PDF copy of the work can be downloaded from:
*http://www.sciencedirect.com/science/article/pii/S0025326X16302971
<http://www.sciencedirect.com/science/article/pii/S0025326X16302971>*



Please do not hesitate to contact me for any question regarding our work.


Best Regards

Ursula Pena
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