Mason Archival Repository Service

Population Size and Viability of Bottlenose Dolphins (Tursiops truncatus) off the Coast of the Parque Nacional de Este, Dominican Republic

Show simple item record

dc.contributor.advisor Parsons, E. Chris M.
dc.contributor.author Roland, Adele
dc.creator Roland, Adele
dc.date 2013-11-12
dc.date.accessioned 2014-03-15T15:42:21Z
dc.date.available 2014-03-15T15:42:21Z
dc.date.issued 2014-03-15
dc.identifier.uri http://hdl.handle.net/1920/8673
dc.description.abstract The population of bottlenose dolphins (Tursiops truncatus) living off the Southeast coast of the Dominican Republic was analyzed to determine demographic parameters and to better understand the status of the population. Sighting data from the Fundacion Dominicana de Estudios Marinos was used for photo-identification analysis. The sighting histories produced were entered into Pollock's robust model for mark-recapture analysis. From this analysis the abundance of the population was estimated as 102 (95% CI 66-178) dolphins in 2010 with an average annual survival of 0.952 from 2007-2010. Population viability analysis was performed using these data and reproductive parameters from the literature on bottlenose dolphins. Due to uncertainties in the models two scenarios were produced. One scenario represented the best estimates possible and shows the population to be growing. A second scenario, which used only slightly different parameters, shows the population to be in decline. In either scenario the removal of dolphins from the population has long term effects, the magnitude of which are dependent on the sex and age category of the animals removed. Removing female dolphins has longer term impact the removing male dolphins. en_US
dc.language.iso en en_US
dc.subject Bottlenose dolphin en_US
dc.subject photo-ID en_US
dc.subject mark-recapture en_US
dc.subject population en_US
dc.subject population viability en_US
dc.title Population Size and Viability of Bottlenose Dolphins (Tursiops truncatus) off the Coast of the Parque Nacional de Este, Dominican Republic en_US
dc.type Thesis en
thesis.degree.name Master of Science in Environmental Science and Policy en_US
thesis.degree.level Master's en
thesis.degree.discipline Environmental Science and Policy en
thesis.degree.grantor George Mason University en


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search MARS


Browse

My Account

Statistics