Aerial Survey as a Tool to Estimate Abundance and Describe Distribution of a Carcharhinid Species, the Lemon Shark, Negaprion brevirostris
Joint Authors
Bond, M. E.
Perkins, R. G.
Kessel, S. T.
Gledhill, K. S.
Gruber, S. H.
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-10-09
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Earth Science , Water and Environment
Abstract EN
Aerial survey provides an important tool to assess the abundance of both terrestrial and marine vertebrates.
To date, limited work has tested the effectiveness of this technique to estimate the abundance of smaller shark species.
In Bimini, Bahamas, the lemon shark (Negaprion brevirostris) shows high site fidelity to a shallow sandy lagoon, providing an ideal test species to determine the effectiveness of localised aerial survey techniques for a Carcharhinid species in shallow subtropical waters.
Between September 2007 and September 2008, visual surveys were conducted from light aircraft following defined transects ranging in length between 8.8 and 4.4 km.
Count results were corrected for “availability”, “perception”, and “survey intensity” to provide unbiased abundance estimates.
The abundance of lemon sharks was greatest in the central area of the lagoon during high tide, with a change in abundance distribution to the east and western regions of the lagoon with low tide.
Mean abundance of sharks was estimated at 49 (±8.6) individuals, and monthly abundance was significantly positively correlated with mean water temperature.
The successful implementation of the aerial survey technique highlighted the potential of further employment for shark abundance assessments in shallow coastal marine environments.
American Psychological Association (APA)
Kessel, S. T.& Gruber, S. H.& Gledhill, K. S.& Bond, M. E.& Perkins, R. G.. 2013. Aerial Survey as a Tool to Estimate Abundance and Describe Distribution of a Carcharhinid Species, the Lemon Shark, Negaprion brevirostris. Journal of Marine Sciences،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-1007124
Modern Language Association (MLA)
Kessel, S. T.…[et al.]. Aerial Survey as a Tool to Estimate Abundance and Describe Distribution of a Carcharhinid Species, the Lemon Shark, Negaprion brevirostris. Journal of Marine Sciences No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-1007124
American Medical Association (AMA)
Kessel, S. T.& Gruber, S. H.& Gledhill, K. S.& Bond, M. E.& Perkins, R. G.. Aerial Survey as a Tool to Estimate Abundance and Describe Distribution of a Carcharhinid Species, the Lemon Shark, Negaprion brevirostris. Journal of Marine Sciences. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-1007124
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1007124