Population dynamics of the brown alga Himanthalia elongata under harvesting pressure

Doriane Stagnol 1, * Renaud Michel 1 Dominique Davoult 1
* Corresponding author
1 EFEB - Ecogéochimie et Fonctionnement des Ecosystèmes Benthiques
ADMM - Adaptation et diversité en milieu marin
Abstract : Through experimental harvesting, followed by a 12-month monitoring of demographic attributes, we tested the influence of harvesting on the population dynamics of Himanthalia elongata. We further explore the data to test the hypothesis that the canopy would exert a negative effect on the other developmental stages (intraspecific competition) throughout the recovery cycle of the population. This showed that the H. elongata canopy plays a marked seasonal role not by precluding the presence of other developmental stages but by delaying or preventing their growth and development. The removal of the canopy facilitates the transition from one developmental stage to another, eventually permitting a fast recovery of size structure in the population. This study allows us to integrate population dynamics and intraspecific relationships in our understanding of macroalgal recovery patterns.
Document type :
Journal articles
Complete list of metadatas

Cited literature [27 references]  Display  Hide  Download

https://hal.sorbonne-universite.fr/hal-01297341
Contributor : Gestionnaire Hal-Upmc <>
Submitted on : Monday, April 4, 2016 - 10:47:23 AM
Last modification on : Friday, May 24, 2019 - 4:59:36 PM
Long-term archiving on : Monday, November 14, 2016 - 2:47:28 PM

File

Stagnol_Population_dynamics.pd...
Files produced by the author(s)

Identifiers

Citation

Doriane Stagnol, Renaud Michel, Dominique Davoult. Population dynamics of the brown alga Himanthalia elongata under harvesting pressure. Estuarine, Coastal and Shelf Science, Elsevier, 2016, 174, pp.65-70. ⟨10.1016/j.ecss.2016.03.014⟩. ⟨hal-01297341⟩

Share

Metrics

Record views

425

Files downloads

158