Herbivory effects of sea urchin species on a coral reef (Bora-Bora, French Polynesia)
Stéphanie Krimou
,
Emma Gairin
(1)
,
Laura Gautrand
,
Jérome Sowinski
,
Mila Trotier
,
Lana Minier
(2)
,
Hugo Bischoff
,
Vincent Sturny
(3)
,
Tehani Maueau
,
Viliame Waqalevu
(4)
,
Fabio Bulleri
(5)
,
Xavier Raick
,
Frédéric Bertucci
(6, 7, 8)
,
David Lecchini
(2, 4)
1
OIST -
Okinawa Institute of Science and Technology Graduate University
2 CRIOBE - Centre de recherches insulaires et observatoire de l'environnement
3 Polynésienne des Eaux
4 LabEX CORAIL - Laboratoire d'Excellence CORAIL
5 University of Pisa - Università di Pisa
6 BOREA - Biologie des Organismes et Ecosystèmes Aquatiques
7 Université des Antilles (Pôle Guadeloupe)
8 UMR MARBEC - MARine Biodiversity Exploitation and Conservation - MARBEC
2 CRIOBE - Centre de recherches insulaires et observatoire de l'environnement
3 Polynésienne des Eaux
4 LabEX CORAIL - Laboratoire d'Excellence CORAIL
5 University of Pisa - Università di Pisa
6 BOREA - Biologie des Organismes et Ecosystèmes Aquatiques
7 Université des Antilles (Pôle Guadeloupe)
8 UMR MARBEC - MARine Biodiversity Exploitation and Conservation - MARBEC
Stéphanie Krimou
- Fonction : Auteur
Laura Gautrand
- Fonction : Auteur
Jérome Sowinski
- Fonction : Auteur
Mila Trotier
- Fonction : Auteur
Hugo Bischoff
- Fonction : Auteur
Tehani Maueau
- Fonction : Auteur
Xavier Raick
- Fonction : Auteur
Frédéric Bertucci
- Fonction : Auteur
- PersonId : 1209245
- ORCID : 0000-0002-2425-9362
- IdRef : 161524885
David Lecchini
- Fonction : Auteur
- PersonId : 1194331
- ORCID : 0000-0002-6347-1112
- IdRef : 191538345
Résumé
Macroalgae are becoming dominant on coral reefs worldwide, replacing corals as key habitat formers. Incrementing consumption rates by herbivores, such as sea urchins, has been identified as a viable strategy for promoting coral recovery. By means of a 28-day experiment, we assessed the grazing effects of the sea urchins, Tripneustes gratilla and Diadema setosum, on the macroalgal assemblages of shallow reefs at Bora-Bora (French Polynesia). In particular, each urchin species was either absent or maintained, using cages (n = 10), at a density of 5 individuals/m2. T. gratilla exerted stronger negative effects than D. setosum on all the examined macroalgae (i.e., Turbinaria ornata, Padina boryana, Halimeda spp, Dictyota spp). In addition, the grazing effects by T. gratilla on macroalgae emerged shortly after the start of the experiment, more rapidly than those of D. setosum. Despite an apparent lower food preference for T. ornata in D.setosum, all macroalgae were consumed by both species and the composition of the macroalgal assemblages (i.e., the proportion of each species) did not change after 28 days. Overall, our study suggests that herbivorous sea urchins, when at relatively high densities, could contribute to sustaining coral-dominance on coral reefs by keeping macroalgae under control.
Format du dépôt | Fichier |
---|---|
Type de dépôt | Article dans une revue |
Titre |
en
Herbivory effects of sea urchin species on a coral reef (Bora-Bora, French Polynesia)
|
Résumé |
en
Macroalgae are becoming dominant on coral reefs worldwide, replacing corals as key habitat formers. Incrementing consumption rates by herbivores, such as sea urchins, has been identified as a viable strategy for promoting coral recovery. By means of a 28-day experiment, we assessed the grazing effects of the sea urchins, Tripneustes gratilla and Diadema setosum, on the macroalgal assemblages of shallow reefs at Bora-Bora (French Polynesia). In particular, each urchin species was either absent or maintained, using cages (n = 10), at a density of 5 individuals/m2. T. gratilla exerted stronger negative effects than D. setosum on all the examined macroalgae (i.e., Turbinaria ornata, Padina boryana, Halimeda spp, Dictyota spp). In addition, the grazing effects by T. gratilla on macroalgae emerged shortly after the start of the experiment, more rapidly than those of D. setosum. Despite an apparent lower food preference for T. ornata in D.setosum, all macroalgae were consumed by both species and the composition of the macroalgal assemblages (i.e., the proportion of each species) did not change after 28 days. Overall, our study suggests that herbivorous sea urchins, when at relatively high densities, could contribute to sustaining coral-dominance on coral reefs by keeping macroalgae under control.
|
Auteur(s) |
Stéphanie Krimou
, Emma Gairin
1
, Laura Gautrand
, Jérome Sowinski
, Mila Trotier
, Lana Minier
2
, Hugo Bischoff
, Vincent Sturny
3
, Tehani Maueau
, Viliame Waqalevu
4
, Fabio Bulleri
5
, Xavier Raick
, Frédéric Bertucci
6, 7, 8
, David Lecchini
2, 4
1
OIST -
Okinawa Institute of Science and Technology Graduate University
( 569902 )
- 1919-1 Tancha, Onna-son, Kunigami-gun
Okinawa, Japan 904-0495
- Japon
2
CRIOBE -
Centre de recherches insulaires et observatoire de l'environnement
( 107006 )
- BP 1013 Papetoiai 98729 PAPETOAI
- France
3
Polynésienne des Eaux
( 1063886 )
- Route de la Fautaua-Titioro Bain Loti, Papeete, Polynésie française
- Polynésie française
4
LabEX CORAIL -
Laboratoire d'Excellence CORAIL
( 209113 )
- 58 avenue Paul Alduy 66860 Perpignan CEDEX - Tél. : 04 30 19 23 32 - contact@labex-corail.fr
- France
5
University of Pisa - Università di Pisa
( 366408 )
- Lungarno Pacinotti 43 - 56126 Pisa
- Italie
6
BOREA -
Biologie des Organismes et Ecosystèmes Aquatiques
( 542153 )
- Muséum national d'Histoire naturelle - 7, rue Cuvier - CP 32 - 75231 Paris Cedex 05
- France
7
Université des Antilles (Pôle Guadeloupe)
( 466883 )
- Fouillole - BP 250 - 97157 Pointe à Pitre, Guadeloupe
- Guadeloupe
8
UMR MARBEC -
MARine Biodiversity Exploitation and Conservation - MARBEC
( 1100742 )
- Université de Montpellier
Bâtiment 24 - CC 093
Place Eugène Bataillon
34095 Montpellier cedex 5 France
- France
|
Langue du document |
Anglais
|
Nom de la revue |
|
Date de publication |
2023
|
Volume |
564
|
Page/Identifiant |
151900
|
Vulgarisation |
Non
|
Comité de lecture |
Oui
|
Audience |
Internationale
|
Commentaire |
WOS:000958865300001
|
Domaine(s) |
|
Projet(s) ANR |
|
Voir aussi |
|
Mots-clés |
en
Macroalgae, Bora-Bora, Grazing, Herbivorous
|
DOI | 10.1016/j.jembe.2023.151900 |
Fichier principal
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