A note on possible change in the mean calving interval for southern right whales off South Africa

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dc.contributor.authorBrandão, Anabela
dc.contributor.authorBest, Peter B
dc.contributor.authorButterworth, Doug S
dc.date.accessioned2016-04-20T12:47:28Z
dc.date.available2016-04-20T12:47:28Z
dc.date.issued2010
dc.date.updated2016-04-20T12:43:36Z
dc.description.abstractA simple approach has been applied to investigate whether resightings of female right whales with calves on annual aerial surveys off South Africa provide any evidence for a change in calving interval over the period from 1979 to 2006 for which data are now available. Updated data, including some corrections to the data from 1979 to 2003 that were considered in previous reports (Best et al., 2001, 2005), are shown in Table 1. The methodology applied is that of Cooke et al. (1993), and is set out in the Appendix. Two possible parameterisations of a change in calving interval probabilities are considered, as reflected in Equations (7) and (8) of that Appendix.en_ZA
dc.identifier.apacitationBrandão, A., Best, P. B., & Butterworth, D. S. (2010). A note on possible change in the mean calving interval for southern right whales off South Africa. <i>International Whaling Commission</i>, http://hdl.handle.net/11427/19016en_ZA
dc.identifier.chicagocitationBrandão, Anabela, Peter B Best, and Doug S Butterworth "A note on possible change in the mean calving interval for southern right whales off South Africa." <i>International Whaling Commission</i> (2010) http://hdl.handle.net/11427/19016en_ZA
dc.identifier.citationBrandão, A., Best, P. B., & Butterworth, D. S. (2010). A note on possible change in the mean calving interval for southern right whales off South Africa. International Whaling Commission document: SC A, 10, 1-6.en_ZA
dc.identifier.ris TY - Journal Article AU - Brandão, Anabela AU - Best, Peter B AU - Butterworth, Doug S AB - A simple approach has been applied to investigate whether resightings of female right whales with calves on annual aerial surveys off South Africa provide any evidence for a change in calving interval over the period from 1979 to 2006 for which data are now available. Updated data, including some corrections to the data from 1979 to 2003 that were considered in previous reports (Best et al., 2001, 2005), are shown in Table 1. The methodology applied is that of Cooke et al. (1993), and is set out in the Appendix. Two possible parameterisations of a change in calving interval probabilities are considered, as reflected in Equations (7) and (8) of that Appendix. DA - 2010 DB - OpenUCT DP - University of Cape Town J1 - International Whaling Commission LK - https://open.uct.ac.za PB - University of Cape Town PY - 2010 T1 - A note on possible change in the mean calving interval for southern right whales off South Africa TI - A note on possible change in the mean calving interval for southern right whales off South Africa UR - http://hdl.handle.net/11427/19016 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/19016
dc.identifier.vancouvercitationBrandão A, Best PB, Butterworth DS. A note on possible change in the mean calving interval for southern right whales off South Africa. International Whaling Commission. 2010; http://hdl.handle.net/11427/19016.en_ZA
dc.languageengen_ZA
dc.publisherInternational Whaling Commissionen_ZA
dc.publisher.departmentMarine Resource Assessment and Management Groupen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.sourceInternational Whaling Commissionen_ZA
dc.source.urihttps://iwc.int/document_1061
dc.subject.othercalving interval
dc.subject.otherSouth Africa
dc.subject.othersouthern right whales
dc.titleA note on possible change in the mean calving interval for southern right whales off South Africaen_ZA
dc.typeJournal Articleen_ZA
uct.type.filetypeText
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
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