Daniel Jouannet

Regional movements of satellite‐tagged whale sharks Rhincodon typus in the Gulf of Aden

Samantha Andrzejaczek, Michel Vély, Daniel Jouannet, David Rowat et autres

) movement patterns in the Western Indian Ocean, we deployed eight pop-up satellite tags at an aggregation site in the Arta Bay region of the Gulf of Tadjoura, Djibouti in the winter months of 2012, 2016, and 2017. Tags revealed movements ranging …

us, fr, Seychelles (code pays fourni par la source)

Predicting seasonal movements and distribution of the sperm whale using machine learning algorithms

Philippine Chambault, Sabrina Fossette, Mads Peter Heide‐Jørgensen, Daniel Jouannet et autres

Implementation of effective conservation planning relies on a robust understanding of the spatiotemporal distribution of the target species. In the marine realm, this is even more challenging for species rarely seen at the sea surface due to their extreme diving behavior like …

gl (code pays fourni par la source)

Using machine learning models to predict the distribution of a cryptic marine species: the sperm whale

Philippine Chambault, Sabrina Fossette, Mads Peter Heide J rgensen, Daniel Jouannet et autres

Implementation of effective conservation planning relies on a robust understanding of the spatio-temporal distribution of the target species. In the marine realm, this is even more challenging for cryptic species with extreme diving behaviour like the sperm whales. Our study aims at …

gl (code pays fourni par la source)

Djibouti – a kindergarten for whale sharks?

David Rowat, Savinien T. Leblond, Bruno Pardigon, Michel Vély et autres

Background An aggregation of juvenile whale sharks were first reported off Arta, Djibouti, in 2003 and formally investigated in 2006. Standardised monitoring started in 2009 to establish the demographics of this aggregation and how it relates to the broader Red Sea and …

Seychelles, us (code pays fourni par la source)

Long-term membership of whale sharks (Rhincodon typus) in coastal aggregations in Seychelles and Djibouti

David Rowat, Katie Brooks, Abi March, Ciara McCarten et autres

In coastal waters of several locations globally, whale sharks (Rhincodon typus) form seasonal aggregations, most of which largely comprise juvenile males of 4–8 m length. Evaluation of the period that individuals stay within these size- and age-specific groupings will clarify our understanding …

ie, Seychelles, gb, fr, Djibouti (code pays fourni par la source)

Seeing Spots: Photo-identification as a Regional Tool for Whale Shark Identification

Katie Brooks, David Rowat, Simon J. Pierce, Daniel Jouannet et autres

The identification of individual animals over temporal and spatial scales can provide robust estimates of population size and distribution. While marker tagging can provide an option to achieve this, it can be problematic both in terms of tag loss and the associated …