Title :

Impact of the Phaeocystis globosa spring bloom on the intertidal benthic compartment in the eastern English Channel: a synthesis.

Author(s) :

Spilmont, Nicolas [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Denis, Lionel [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Artigas, Luis Felipe [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Caloin, Frédéric [Auteur]
Courcot, Lucie [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Créach, Anne [Auteur]
Génétique et évolution des populations végétales [GEPV]
Desroy, Nicolas [Auteur]
Gevaert, François [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Hacquebart, Pascal [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Hubas, Cédric [Auteur]
Adaptation et diversité en milieu marin [ADMM]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Janquin, Marie-Andrée [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Lemoine, Yves [Auteur]
Génétique et évolution des populations végétales [GEPV]
Luczak, Christophe [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Migné, Aline [Auteur]
Adaptation et diversité en milieu marin [ADMM]
Rauch, Mathieu [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Davoult, Dominique [Auteur]
Adaptation et diversité en milieu marin [ADMM]

Journal title :

Marine Pollution Bulletin

Pages :

55-63

Publisher :

Elsevier

Publication date :

2009

ISSN :

0025-326X

English keyword(s) :

Phaeocystis globosa
bloom
Ecosystem
intertidal
benthic communities
English Channel

HAL domain(s) :

Sciences du Vivant [q-bio]/Ecologie, Environnement/Interactions entre organismes
Sciences de l'environnement/Biodiversité et Ecologie

English abstract : [en]

From 1999 to 2005, studies carried out in the frame of regional and national French programs aimed to determine whether the Phaeocystis globosa bloom affected the intertidal benthic communities of the French coast of the ...
Show more >From 1999 to 2005, studies carried out in the frame of regional and national French programs aimed to determine whether the Phaeocystis globosa bloom affected the intertidal benthic communities of the French coast of the eastern English Channel in terms of composition and/or functioning. Study sites were chosen to cover most of the typical shore types encountered on this coast (a rocky shore, an exposed sandy beach and a small estuary). Both the presence of active Phaeocystis cells and their degradation product (foam) did have a significant impact on the studied shores. The primary production and growth rates of the kelp Saccharina latissima decreased during the bloom because of a shortage of light and nutrient for the macroalgae. On sandy sediments, the benthic metabolism (community respiration and community primary production), as well as the nitrification rate, were enhanced during foam deposits, in relation with the presence of bacteria and active pelagic cells within the decaying colonies. In estuarine sediments, the most impressive impact was the formation of a crust at the sediment surface due to drying foam. This led to anoxic conditions in the surface sediment and resulted in a high mortality among the benthic community. Some organisms also tended to migrate upward and were then directly accessible to the higher trophic level represented by birds. Phaeocystis then created a shortcut in the estuarine trophic network. Most of these modifications lasted shortly and all the systems considered came back to their regular properties and activities a few weeks after the end of the bloom, except for the most impacted estuarine area.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

• Laboratoire d'Océanologie et de Géosciences (LOG) - UMR 8187

Source :

Harvested from HAL