In this introductory course we will investigate the features and dynamics of the World Ocean, which covers roughly 70% of the Earth’s surface. We will take advantage of our intense and continuing contact with the oceans and coastal regions during the voyage to build an understanding of the interdisciplinary nature of ocean processes. The disciplines involved include marine geology, marine chemistry, physical oceanography, and marine biology. Topics treated include seafloor spreading and marine sediments (geology), salinity and biogeochemical cycles (chemistry), currents, waves, and tides (physics), and primary and secondary production, biodiversity, and oceanic resources (biology). We will also touch on coastal development and management of fisheries, especially in relation to the countries and regions we will visit.
Field WorkCountry: Senegal
Day: 1 - Friday, 21 October
For this day-long field trip we will leave the ship in Dakar on October 21 for the 70 km bus trip south to the Réserve Naturelle D’intérêt Communautaire de la Somone. This estuarine reserve was established by local women concerned about overharvesting of mangrove trees for wood and fuel and depleted stocks of oysters growing on mangrove roots. We will walk through the mangrove forests in the estuary and learn about the different species of trees and their ecological services. This will include viewing animals like waterfowl that feed and nest in the forest and oysters attached to mangrove roots. We will also visit any aquaculture activities being undertaken in the lagoon. Returning to Dakar, we hope to visit the Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT) to speak with fishery managers and oceanographers about issues affecting fisheries of the region. Later in the afternoon we will visit the busy Soumbedioune Fish Market in Dakar in time to watch fishing canoes return to the beach with their catch. We will walk through the market to see the catch for sale and talk with fishers and saleswomen about changes in catch over time. Learning objectives:
- Explore mangrove forests in the Réserve Naturelle D’intérêt Communautaire de la Somone
- Learn about oyster culture activities in the lagoon
- Visit Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT) to speak with fishery managers and oceanographers Tentative
- Visit Soumbedioune Fish Market in Dakar to examine the day’s catch