Skip to main content
Journal cover image

Habitat preferences of two deep-diving cetacean species in the northern Ligurian Sea

Publication ,  Journal Article
Tepsich, P; Rosso, M; Halpin, PN; Moulins, A
Published in: Marine Ecology Progress Series
August 4, 2014

We used generalized additive models (GAMs) as exploratory habitat models for describing the distribution of 2 deep-diving species, Cuvier's beaked whale Ziphius cavirostris Cuvier, 1823 and sperm whale Physeter catodon Linnaeus, 1758, in the Pelagos Sanctuary (northwestern Mediterranean). We analyzed data collected from research surveys and whale-watching activities during summer months from 2004 to 2007. The dataset encompassed 147 Cuvier's beaked whale sightings and 52 sperm whale sightings. We defined and applied a post hoc workflow to the data, to minimize false absence bias arising from the unique ecology of the species and the lack of a dedicated sampling design. We calculated a novel topographic predictor, distance from the canyon axis, as a covariate for use in the habitat model. Given the complex topography of the area, the analysis was performed on a high-resolution spatial grid (1 km). Our methods allowed effective use of the non-dedicated sampling dataset for building habitat models of elusive and cryptic species (Cuvier's beaked whale final model sensitivity = 0.88 and specificity = 0.84; sperm whale final model sensitivity = 0.65 and specificity = 0.77). The GAM results confirmed the preference for submarine canyons for both species and also highlighted the importance of the deeper portion of the Ligurian basin, especially for Cuvier's beaked whale. Habitat overlap nevertheless is resolved by a well-defined spatial partitioning of the area, with sperm whale occupying the western part and Cuvier's beaked whale the central and eastern parts. © Inter-Research 2014.

Duke Scholars

Published In

Marine Ecology Progress Series

DOI

ISSN

0171-8630

Publication Date

August 4, 2014

Volume

508

Start / End Page

247 / 260

Related Subject Headings

  • Marine Biology & Hydrobiology
  • 4102 Ecological applications
  • 3109 Zoology
  • 3103 Ecology
  • 0608 Zoology
  • 0602 Ecology
  • 0405 Oceanography
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Tepsich, P., Rosso, M., Halpin, P. N., & Moulins, A. (2014). Habitat preferences of two deep-diving cetacean species in the northern Ligurian Sea. Marine Ecology Progress Series, 508, 247–260. https://doi.org/10.3354/meps10851
Tepsich, P., M. Rosso, P. N. Halpin, and A. Moulins. “Habitat preferences of two deep-diving cetacean species in the northern Ligurian Sea.” Marine Ecology Progress Series 508 (August 4, 2014): 247–60. https://doi.org/10.3354/meps10851.
Tepsich P, Rosso M, Halpin PN, Moulins A. Habitat preferences of two deep-diving cetacean species in the northern Ligurian Sea. Marine Ecology Progress Series. 2014 Aug 4;508:247–60.
Tepsich, P., et al. “Habitat preferences of two deep-diving cetacean species in the northern Ligurian Sea.” Marine Ecology Progress Series, vol. 508, Aug. 2014, pp. 247–60. Scopus, doi:10.3354/meps10851.
Tepsich P, Rosso M, Halpin PN, Moulins A. Habitat preferences of two deep-diving cetacean species in the northern Ligurian Sea. Marine Ecology Progress Series. 2014 Aug 4;508:247–260.
Journal cover image

Published In

Marine Ecology Progress Series

DOI

ISSN

0171-8630

Publication Date

August 4, 2014

Volume

508

Start / End Page

247 / 260

Related Subject Headings

  • Marine Biology & Hydrobiology
  • 4102 Ecological applications
  • 3109 Zoology
  • 3103 Ecology
  • 0608 Zoology
  • 0602 Ecology
  • 0405 Oceanography