Tropical tunas are known to associate with floating objects, forming large aggregations around them. Taking advantage of this behavior, fishers deploy artificial floating objects (known as Fish Aggregating Devices, or FADs) worldwide to facilitate their fishing activities. The lack of understanding of why tuna associate with these devices hinders the assessment of their ecological impacts. The “indicator-log” hypothesis posits...

Diel vertical migrations in the ocean play a key role in predator-prey dynamics and the functioning of the biological carbon pump. However, changes in ocean conditions including warming and deoxygenation threaten to significantly perturb vertical migration patterns over the twenty-first century. Specifically, vertical migrations over regions of critically low oxygen, known as oxygen minimum zones (OMZs), are likely to be most...

Monitoring the spatio-temporal variations of surface chlorophyll-a concentration (Chl, a proxy of phytoplankton biomass) greatly benefited from the availability of continuous and global ocean color satellite measurements from 1997 onward. These two decades of satellite observations are however still too short to provide a comprehensive description of Chl variations at decadal to multi-decadal timescales. This paper investigate...