Seasonal changes in the photophysiology of Ulva batuffolosa in a coastal barrier reef

Type Article
Date 2022-06
Language English
Author(s) Jauffrais ThierryORCID1, Brisset Maele1, Lagourgue Laura2, Payri Claude E.2, Gobin Siloë2, Le Gendre RomainORCID1, Van Wynsberge Simon1
Affiliation(s) 1 : Ifremer, IRD, Univ Nouvelle-Calédonie, Univ La Réunion, CNRS, UMR 9220 ENTROPIE, BP 32078, 98800, Nouméa, New Caledonia
2 : IRD, Ifremer, Univ Nouvelle-Calédonie, Univ La Réunion, CNRS, UMR 9220 ENTROPIE, BP A5, 98848 Nouméa cedex, New Caledonia
Source Aquatic Botany (0304-3770) (Elsevier BV), 2022-06 , Vol. 179 , P. 103515 (9p.)
DOI 10.1016/j.aquabot.2022.103515
WOS© Times Cited 1
Keyword(s) Bloom, Coral reef, Chlorophyte, Pulse amplitude modulated fluorometer, Ulva batuffolosa, Rapid light curve, NPQ

To assess the photophysiological capacity of the recently described Ulva batuffolosa to form blooms in coral reefs, we monitored its biomass and photophysiological capacity with pulse amplitude modulated (PAM) fluorometry over a year period on a coastal barrier reef in New Caledonia, along with temperature and light. Effective and maximum quantum efficiencies of the photosystem II measured on this Ulva species indicated that the algae was in a “good health” all over the year with high quantum efficiencies under either light (Fq’/Fm’) or dark incubated conditions and (Fv/Fm). Photo-acclimation and -regulation status used by this Ulva sp. were driven by seasons (i.e., light and temperature) in the lagoon. Although photo-inhibition was an evidence during the warm period, U. batuffolosa was overall well adapted to tolerate the range of irradiance and temperature that characterized the lagoon over the year, which suggests that photosynthesis is not an impediment to green tides by this species.

Full Text
File Pages Size Access
Author's final draft 30 1 MB Open access
6 MB Access on demand
9 3 MB Access on demand
Top of the page