Jul 17, 2021
Canyon of Caprera
Our multiple research activities in the Caprera Canyon, in collaboration with high level international institutions to increase knowledge on cetacean species and ensure the protection of this biodiversity hotspot.

Since 2019 One Ocean Foundation is committed to support research activities in the Caprera Canyon, considered the area with the largest submarine canyon system in the northeast of Sardinia, in the central Tyrrhenian Sea.

The Canyon is characterized by a large density of pelagic fauna; the site hosts 7 of the 8 species of cetaceans usually present in the western Mediterranean, some of which are considered particularly rare.

The main goal of this project is to develop scientific evidence in order to protect the Caprera Canyon area, currently recognized as an Area of ​​Interest (AoI),  promoting it to Important Area for Marine Mammals (IMMA).

To pursue this aim, One Ocean Foundation has chosen to support and coordinate itself with important research bodies and universities, to collect scientific evidence on critical information on ecology and cetacean distribution: the CMRE centre of La Spezia, Insubria University, the CNR and SEAME Sardinia association.

The main goal of this project is to develop scientific evidence in order to protect the Caprera Canyon area, currently recognized as an Area of ​​Interest (AoI), promoting it to Important Area for Marine Mammals (IMMA).
Fin whale, Balaenoptera Physalus, photographed in the Canyon of Caprera

These underwater canyons are considered important hotspots for several species of cetaceans, thanks to underwater currents that favor the transport of nutrients and of numerous preys which are the base of the food chain.

Cetaceans are recognized by the EU Marine Strategy Framework Directive as essential components of ecosystems and highly linked to their health, as, being large predators, they can greatly influence the structure of marine ecosystems. However, there are many problems caused by human activities that have a great impact on cetaceans and, to mitigate the consequences, accurate knowledge of the distribution and abundance of these animals is required.

Research Activities

As of today, the project consists of three main research activities: Acoustic monitoring, Environmental DNA Analysis and Visual survey.

1. Acoustic Monitoring

Cetaceans use sound, which propagates better than light in water, to navigate, communicate and to echo locate and hunt preys underwater. One Ocean Foundation, in collaboration with the CMRE center in LA Spezia, will position 3 sound recording devices in strategic points of the Caprera Canyon area, to monitor the presence and distribution of deep-diving mammals (ex: beaked whales). Results of these research will allow to better understand the use of the habitat by cetaceans as well as to conceive solutions to mitigate the impact of anthropogenic noise on cetaceans.

Satellite view of the position of the recorders

2. Environmental DNA analysis

One Ocean Foundation collaborates with the University of Insubria to develop genetic detection of cetaceans. This technique is based on the collection of sea water samples and analysis of environmental DNA, intended to describe the temporal distribution of the biodiversity of cetaceans in the Caprera Canyon area. This is a non-invasive monitoring tool, as the physical presence of the organism is not necessary.

Satellite view of the position of the recorders

3. Visual survey

One Ocean Foundation supports SEA-ME Sardinia Onlus, non-profit organization whose mission is to protect cetaceans in the Mediterranean Sea and that implements visual monitoring activities to gather scientific data on the presence, abundance, distribution and movements of cetacean in the area of the Caprera Canyon. These investigations are carried out through sightings on linear transects, photo identification studies and counts of animals that pass in specific geographical points, completely non-invasive observational methods which employ observers specialized in marine mammals.

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