dc.contributor.author |
Korbee, Nathalie |
|
dc.contributor.author |
Navarro, Nelso Patrício |
|
dc.contributor.author |
García-Sánchez, Marta |
|
dc.contributor.author |
Plá, Paula S. M. Celis |
|
dc.contributor.author |
Quintano, Endika |
|
dc.contributor.author |
Copertino, Margareth da Silva |
|
dc.contributor.author |
Pedersen, Are |
|
dc.contributor.author |
Costa, Rodrigo Mariath Varela da |
|
dc.contributor.author |
Mangaiyarkarasi, Nartarajan |
|
dc.contributor.author |
Perez-Ruzafa, Angel |
|
dc.contributor.author |
Figueroa, Felix Lopez |
|
dc.contributor.author |
Martínez, Brezo |
|
dc.date.accessioned |
2016-01-21T22:26:11Z |
|
dc.date.available |
2016-01-21T22:26:11Z |
|
dc.date.issued |
2014 |
|
dc.identifier.citation |
KORBEE, Nathalie et al. A novel in situ system to evaluate the effect of high CO2 on photosynthesis and biochemistry of seaweeds. Aquat Biology, v.22, p.245–259, 2014. Disponível em: < http://www.int-res.com/articles/ab2014/22/b022p245.pdf >. Acesso em 20 Jan 2016. |
pt_BR |
dc.identifier.issn |
ISSN 1864-7782 |
|
dc.identifier.uri |
http://repositorio.furg.br/handle/1/5839 |
|
dc.description.abstract |
Previous studies of the impact of increased CO2 on macroalgae have mainly been done
in laboratories or mesocosm systems, placing organisms under both artificial light and seawater
conditions. In this study, macroalgae were incubated in situ in UV-transparent cylinders under conditions
similar to the external environment. This system was tested in a short-term study (5.5 h incubation)
on the effect of 2 partial pressures of CO2 (pCO2): air (ambient CO2) and the pCO2 predicted
by the end of the 21st century (700 μatm, high CO2), on photosynthesis, photosynthetic pigments
and photoprotection in calcifying (Ellisolandia elongata and Padina pavonica) and non-calcifying
(Cystoseira tamariscifolia) macroalgae. The calcifying P. pavonica showed higher net photosynthesis
under high CO2 than under ambient CO2 conditions, whereas the opposite occurred in C. tamariscifolia.
Both brown algae (P. pavonica and C. tamariscifolia) showed activation of non-photochemical
quenching mechanisms under high CO2 conditions. However, in P. pavonica the phenol content
was reduced after CO2 enrichment. In contrast to phenols, in E. elongata other photoprotectors such
as zeaxanthin and palythine (mycosporine-like amino acid) tended to increase in the high CO2
treatment. The different responses of these species to elevated pCO2 may be due to anatomical and
physiological differences and could represent a shift in their relative dominance as key species in
the face of ocean acidification (OA). More in situ studies could be carried out to evaluate how
macroalgae will respond to increases in pCO2 in a future OA scenario. The in situ incubator system
proposed in this work may contribute towards increasing this knowledge. |
pt_BR |
dc.language.iso |
eng |
pt_BR |
dc.rights |
open access |
pt_BR |
dc.subject |
Macroalgae |
pt_BR |
dc.subject |
Non-photochemical quenching |
pt_BR |
dc.subject |
Ocean acidification |
pt_BR |
dc.subject |
Photoprotection |
pt_BR |
dc.subject |
Photosynthesis |
pt_BR |
dc.title |
A novel in situ system to evaluate the effect of high CO2 on photosynthesis and biochemistry of seaweeds |
pt_BR |
dc.type |
article |
pt_BR |
dc.identifier.doi |
10.3354/ab00594 |
pt_BR |