Tag Archives: marine biology
Life At Sea: Reflections From Two And A Half Months On A Research Vessel
A tugboat maneuvering the RV Sonne into the harbor of Cape Town after four weeks of transit from Emden. Due to COVID-19, we were not allowed to leave the ship, not even for a jog in the harbor.
Germany’s largest research vessel – the RV Sonne – recently returned to harbor in the port town of Emden after 73 days, the longest-ever research cruise in the history of the ship. I was lucky enough to participate in the journey, which took us to through Cape Town, Walvis Bay and Las Palmas. As part of a team of 30 scientists, 22 women and 8 men, we set out to study one of the most productive ecosystems in the world: the Benguela Upwelling System off the coast of South Africa and Namibia.
Spending this long at sea is a truly special experience and here’s my personal account of what it’s like day-to-day on one of the largest research ships in the world.Read more
On The Trail Of Explosive Seaweed Blooms
You’ve probably heard of the Sargasso Sea – it is well-known for the floating seaweed called Sargassum that provides a habitat for baby sea turtles and many other sea critters. Floating in the Atlantic Ocean just off the east coast of North America, it’s also the region where the European and American eels mate, a process that scientists still don’t fully understand after centuries of research.
For the last 10 years, a phenomenon has occurred in the Atlantic where never-ending masses of Sargassum inundate beaches after uncharacteristically large blooms occurred. The Sargassum originates from the nutrient-poor waters of the North Equatorial Recirculation Region off the west coast of Africa and spreads throughout the Atlantic Ocean and adjacent ocean basins, affecting the Caribbean, states surrounding the Gulf of Mexico, South America and even Africa. Tom Theirlynck is a marine biologist, currently working on his PhD at the Royal Netherlands Institute for Sea Research (NIOZ) and University of Amsterdam (IBED-FAME), and he as part of the Amaral-Zettler (NIOZ/UvA) research group is studying the excessive Sargassum blooms in detail.Read more
Hydrothermal Vents And Where To Find Them
The “Candelabra” black smoker at a water depth of 3,300 meters in the Logatchev Hydrothermal Field on the Mid-Atlantic Ridge (Image Credit: MARUM − Zentrum für Marine Umweltwissenschaften, Universität Bremen, CC BY 4.0, Image Cropped)