Effects of Heat Waves and Light Deprivation on Giant Kelp Juveniles (Macrocystis pyrifera, Laminariales, Phaeophyceae).
Macrocystis pyrifera
Juveniles
heat waves
photoacclimation
physiology
Journal
Journal of phycology
ISSN: 1529-8817
Titre abrégé: J Phycol
Pays: United States
ID NLM: 9882935
Informations de publication
Date de publication:
08 2020
08 2020
Historique:
received:
28
10
2019
accepted:
15
03
2020
pubmed:
14
4
2020
medline:
4
2
2021
entrez:
14
4
2020
Statut:
ppublish
Résumé
Due to climate change, the incidence of marine heat waves (MHWs) has increased, yet their effects on seaweeds are still not well understood. Adult sporophytes of Macrocystis pyrifera, the species forming the iconic giant kelp forests, can be negatively affected by thermal stress and associated environmental factors (e.g., nutrient depletion, light deprivation); however, little is known about the tolerance/vulnerability of juvenile sporophytes. Simultaneously to MHWs, juveniles can be subjected to light limitation for extended periods of time (days-weeks) due to factors causing turbidity, or even because of shading by understory canopy-forming seaweeds. This study evaluated the effects of a simulated MHW (24°C, 7 d) in combination (or not) with light deprivation, on the photosynthetic capacities, nutrient uptake, and tissue composition, as well as oxidative stress descriptors of M. pyrifera juvenile sporophytes (single blade stage, up to 20 cm length). Maximum quantum yield (F
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
880-894Informations de copyright
© 2020 Phycological Society of America.
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