Maria S. Merian Sets Course for Cape Verde to Study Deep-Sea Migration

An international research team led by GEOMAR Helmholtz Centre for Ocean Research Kiel has set sail from Ponta Delgada on the research vessel Maria S. Merian, heading for the Cape Verde Islands. The aim of the expedition is to investigate the ladder of vertical migration, a phenomenon that has been scarcely studied to date. The researchers are combining deep-sea camera footage with net catches and genetic traces from the water.

 

Details of the Expedition

 

A research team has set sail. It is an international team. A German institute leads it. The vessel is the Maria S. Merian. It heads for Cape Verde.

The expedition has a clear aim. It studies vertical migration. This is a ladder phenomenon. It is little understood. It runs through October and November.

 

The Migration Phenomenon

 

The phenomenon is well known near the surface. Many animals migrate daily. They rise at night. They descend by day. This avoids predators.

The deeper picture is unclear. Darkness reigns below 1,000 metres. Migration may continue there. A ladder may exist. Predator-prey links may drive it.

 

The Research Location

 

The team chose a specific region. It is the eastern Atlantic. Surface patterns are reliable there. This aids the study. It links deep movements.

The location offers other benefits. Existing data supports it. This aids context. It reveals peculiarities. It helps interpret new findings.

 

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The Camera Technology

 

The team uses specialist cameras. Nets alone are limited. They miss movement over time. They damage delicate animals. Cameras overcome this.

The cameras are advanced. One images tiny organisms. A liquid lens adjusts focus. Another captures larger animals. A third records bioluminescence.

 

The Scientific Approach

 

The team combines methods. Cameras provide footage. Nets provide catches. Genetic traces feature. Red light minimises disturbance.

The equipment withstands pressure. Special housings protect it. These were made in-house. They endure the depths. They enable deep observation.

 

Significance of the Research

 

The research informs conservation. The deep sea is little studied. Understanding is essential. It covers ecological processes. It supports sustainable use.

The research aids climate science. Migration may transport carbon. This feeds the biological pump. It supports long-term storage. The ocean acts as a sink.