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Senegal Stranding Network

Project Description

Senegal’s marine wildlife includes over 25 species of cetaceans, the African manatee, and four species of sea turtles, all of which are protected species under both international and Senegalese national laws. The recent discovery of a stranded Omura’s Whale near the northern border of Senegal in Mauritania, the first Atlantic record of this enigmatic species, shows that new species are still being documented in this region.

Beginning in 2015, we and several other concerned biologists began quarterly surveys of the north coast between Dakar and St. Louis, Senegal to document stranded sea turtles, cetaceans, and other wildlife. In 2016 we also began surveying Senegal’s central and southern coast.

All stranded marine mammals and sea turtles are documented and sampled for genetics and other biological studies. Carcasses are examined for signs of fisheries interactions or other human-caused mortality, and if found these cases are thoroughly documented with samples of fishery gear collected if available. We’re also developing a coastal network of fishermen, national parks and marine protected area staff, conservation professionals, and volunteers to report marine mammal and sea turtle sightings and strandings throughout the year, so that the mortality of protected species can be accurately documented, and samples can be collected more quickly and effectively once animals strand. Access to fresher carcasses also increases the likelihood that causes of death may be able to be determined. All stranding data is analyzed by species, locality, season, and cause of mortality to detect potential trends in stranding occurrence. Additionally, we lead education programs in local communities to raise awareness of the protected status and threats to marine mammals and sea turtles.

Periodic monitoring of beaches and coastlines is a relatively inexpensive and easy way to assess marine mammals and sea turtles compared to aerial surveys or monitoring by ships. By collecting stranding information throughout the year over multiple years, we will be able to estimate of trends in mortality by species, season, and cause (fisheries bycatch, offshore gas exploration, natural, etc.). It’s also a way to assess temporal trends of biodiversity of cetaceans and marine turtles, to detect any unusual mortality events (UMEs), and to estimate the impact of human activities in real time in Senegalese waters. With this information, we can work towards better regulation and strict control of the national legislation and international conventions to limit the mortality of cetaceans and sea turtles.

Project Partners

A special thank you to our Senegal Stranding Network project partners:

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Address

P.O. Box 366
Chilmark, MA 02535

BP 449 Ngaparou
33022 Mbour,
Senegal, West Africa

Email

info@africanaquaticconservation.org

Phone

United States: +1 508-388-9824
Senegal: +221 33 95 78 999