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Optogenetic Manipulation of Neural Circuits During Monitoring Sleep/wakefulness States in Mice

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Published on: June 19, 2019

Localised anthropogenic wake generates a predictable foraging hotspot for top predators.

Lilian Lieber¹, W Alex M Nimmo-Smith², James J Waggitt³

¹1School of Natural and Built Environment, Queen's University Marine Laboratory, 12-13 The Strand, Portaferry, BT22 1PF Northern Ireland UK.

Communications Biology

|April 10, 2019

Summary

Offshore renewable energy structures create localized foraging hotspots for seabirds. These artificial wakes concentrate prey, benefiting marine predators and highlighting the ecological impacts of human infrastructure.

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Area of Science:

Marine ecology
Oceanography
Renewable energy impacts

Background:

Offshore renewable energy expansion necessitates understanding ecological consequences.
Man-made structures in strong currents create complex wakes, potentially increasing prey accessibility.

Purpose of the Study:

To investigate if artificial wakes from man-made structures create predictable foraging hotspots for marine predators.
To quantify the use of an anthropogenically-generated wake by surface foraging seabirds.

Main Methods:

Utilized drone transects and hydroacoustics to quantify seabird usage.
Compared seabird numbers in artificial wakes versus natural wake features.

Main Results:

The wake of a tidal energy structure created a localized and persistent foraging hotspot.
Seabird numbers in the artificial wake significantly exceeded those at natural wake features.
The wake's mixing action may function as a prey conveyer belt.

Conclusions:

Anthropogenic wakes can generate predictable foraging hotspots for top predators.
Understanding the physical mechanisms of hotspot formation is crucial for assessing ecological impacts of marine structures.