Ítem


Exploring the effects of invasive algae on the persistence of gorgonian populations

The effects of invasive species on native fauna are understudied in marine ecosystems, even though the impact of introduced species must be taken into consideration for proper conservation and management. The main aim of this study was to investigate the effects of invasive algae on one of the highest diversity assemblages in the Mediterranean, the coralligenous. Two manipulative experiments were designed to study the effects of overgrowth of invasive species on juvenile colonies of the Mediterranean gorgonian Paramuricea clavata, an important structural species in coralligenous assemblages. The experiments were conducted in two French marine protected areas, Port-Cros National Park and Scandola Regional Park, which are separated by hundreds of km and are invaded by Caulerpa racemosa and Womersleyella setacea, respectively. Both invasive species had a strong and consistently negative effect on different components of fitness. This finding was demonstrated by lower survivorship, higher necrosis rates and lower biomass in P. clavata colonies exposed to invasive algal overgrowth compared to the controls. Because invasive species affected the viability of juvenile colonies of P. clavata, we conclude that the persistence of P. clavata populations affected by invasion can be jeopardized, especially in the case of populations already impacted by mass mortalities associated with climate warming

Springer Verlag

Autor: Cebrian Pujol, Emma
Linares, Cristina
Marschal, Christian
Garrabou, Joaquim
Data: 1 desembre 2012
Resum: The effects of invasive species on native fauna are understudied in marine ecosystems, even though the impact of introduced species must be taken into consideration for proper conservation and management. The main aim of this study was to investigate the effects of invasive algae on one of the highest diversity assemblages in the Mediterranean, the coralligenous. Two manipulative experiments were designed to study the effects of overgrowth of invasive species on juvenile colonies of the Mediterranean gorgonian Paramuricea clavata, an important structural species in coralligenous assemblages. The experiments were conducted in two French marine protected areas, Port-Cros National Park and Scandola Regional Park, which are separated by hundreds of km and are invaded by Caulerpa racemosa and Womersleyella setacea, respectively. Both invasive species had a strong and consistently negative effect on different components of fitness. This finding was demonstrated by lower survivorship, higher necrosis rates and lower biomass in P. clavata colonies exposed to invasive algal overgrowth compared to the controls. Because invasive species affected the viability of juvenile colonies of P. clavata, we conclude that the persistence of P. clavata populations affected by invasion can be jeopardized, especially in the case of populations already impacted by mass mortalities associated with climate warming
Format: application/pdf
Accés al document: http://hdl.handle.net/10256/10196
Llenguatge: eng
Editor: Springer Verlag
Col·lecció: info:eu-repo/semantics/altIdentifier/doi/10.1007/s10530-012-0261-6
info:eu-repo/semantics/altIdentifier/issn/1387-3547
info:eu-repo/semantics/altIdentifier/eissn/1573-1464
info:eu-repo/grantAgreement/EC/FP7/248252/EU/Effects of global warming and alien species invasions on high diverse communities of NW Mediterranean Sea./CORALCHANGE
Drets: Tots els drets reservats
Matèria: Escalfament global
Global warming
Invasions biològiques -- Mediterrània, Mar
Plantes invasores -- Mediterrània, Mar
Algues marines -- Mediterrània, Mar
Invasive plants -- Mediterranean Sea
Biological invasions -- Mediterranean Sea
Marine algae -- Mediterrània, Mar
Títol: Exploring the effects of invasive algae on the persistence of gorgonian populations
Tipus: info:eu-repo/semantics/article
Repositori: DUGiDocs

Matèries

Autors