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Namibian Dolphin Project Powerpoint

J
Julie Coffey

The document summarizes the Namibian Dolphin Project internship in Walvis Bay, Namibia. It describes the project goals of studying Heaviside's dolphins, bottlenose dolphins, and humpback whales through acoustic monitoring, photo identification, biopsies, and analyzing threats like pollution and tourism impacts. Methods included using a research vessel, collecting signature whistles of bottlenose dolphins, identifying individuals by dorsal fins and body scarring, sampling DNA from biopsies, and tracking conservation threats like oil prospecting and fishery reduction in the productive Benguela ecosystem.

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Namibian Dolphin Project Intern Walvis Bay, Namibia July & August 2012 Julie Coffey
About the project http://namibiandolphinproject.com Dr. Simon Elwen Research fellow, University of Pretoria Dr. Tess Gridley Principal investigator for acoustics Nanuuq: 6m trusty research vessel
Benguela ecosystem Upwelling of nutrient- rich Antarctic waters One of the most productive marine environments in the world Walvis Bay, Namibia
Species Heavisides dolphins (Cephalorhynchus heavisidii) Bottlenose dolphins (Tursiops truncatus) Humpback whales (Megaptera novaeangliae)
Acoustics Study species: Bottlenose dolphins Searching for signature whistles Cross-referencing with field behavioral observations
Photo-ID For Heavisides dolphins, bottlenose dolphins, and any whales Use dorsal fins (both sides) for individual identification Body scarring Flukes for whales, paired with dorsal fin photos
Biopsies Crossbow for whales, javelin for dolphins Tested fats for heavy metals, sampled DNA to identify the individual and determine the sex
Tourism Impacts Feeding wildlife (seals, pelicans) Boat proximity and duration with cetaceans Boat hits
GPS tracking
Conservation Threats Oil prospecting Shipping and Industry Harbor pollution Fishery reduction
Birds and RAMSAR RAMSAR protected wetland Salt flats created for mining purposes Many birds migrate down from the Etosha pan
Credits Benguela current image: http://www.i- cool.org/?p=4873 RAMSAR image: http://www.nnf.org. na/CETN/ramsar.htm Whistle image: http://www.scielo.br/scielo.php? pid=S0001- 37652004000200030&script=sci_arttext

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Namibian Dolphin Project Powerpoint