BIOHERM - Hyperspectral biodiversity and ecological status of Sabellaria Reefs

Can we identify honeycomb worms reefs, their abundance and condition using a hyperspectral camera?

 

Reef formations are not limited to corals alone, but include a wider variety of species capable of building what should be called biogenic structures. This is the case of honeycomb, marine worms of the Sabellariidae (Sabellaria alveolata).

 

The BIOHERM project aims to evaluate the potential of Hyperspectral Imaging (a continuous measurement of the amount of light reflected by objects throughout the light spectrum) to:

 

o    Discriminate Sabellaria bioconstructions from the substrate (rock, sediment) on which they develop based on their specific spectral properties ;

 

o   provide a functional index of bioconstructions (abundance, dynamics of nearby primary production) using hyperspectral signals unmixing;

 

o   use the hyperspectral signal as a potential component in assessing  the ecological status of these bioconstructions at a large scale.

 

Ultimately, this multi-scale study will also assess how results obtained from hyperspectral imaging at different scales (in situ, by drone and airborne), could be transposed to the specifications of satellite hyperspectral sensor.

Federating skills in physical measurements, signal processing and benthic ecology (Ifremer, Onera, IMT Atlantique and GipsaLab), BIOHERM offers a multidisciplinary and multi-scale integrated approach to answer both scientific and management questions.

Scientific contact:
Touria Bajjouk
Collaborations:

À la une

This plant makes it possible to see underwater

Published on 13 september

Eelgrass and the Marha project both feature in a Youtube video by nature blogger Marie Wild

The great tide Bay

Published on 7 july

The honeycomb worms and the LEBCO team in Alexandra Barbot's great documentary on the wildlife of the Mont-Saint-Michel Bay, on Ushuaia TV.

Champeaux's honeycomb worms investigated by hyperspectral imaging

Published on 18 may

Drone acquisition campaign for the BIOHERM project