Photosynthetic efficiency and capacity of intertidal temperate seagrass Zostera marina from Rimouski, QC, Canada, under a light intensity gradient

Eelgrass shoots (Zostera marina) from Rimouski, QC, were exposed in July 2020 to a natural gradient of light intensity, ranging from 6 to 860 µmol photons/m²/s, to assess the species' capacity to respond to light attenuation. After 5 and 25 days of light exposure, photosynthetic responses were...

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Bibliographic Details
Main Authors: Léger-Daigle, Romy, Noisette, Fanny, Bélanger, Simon, Cusson, Mathieu, Nozais, Christian
Format: Dataset
Language:English
Published: PANGAEA 2022
Subjects:
Acclimation
Chamber number
DATE/TIME
East_Rimouski
Eelgrass
Experiment day
Hand picking
Laboratory experiment
light intensity
Light saturation
Maximal electron transport rate
PAM fluorometry
photophysiology
Photosynthetic quantum efficiency
Quebec
Canada
Rapid light curve (RLC)
PAM fluorometry (Diving-PAM II
Heinz WalzGmbH
Germany)
Replicate
Species
Specimen identification
subarctic
Temperature
water
Treatment: light intensity
Type of study
Uniform resource locator/link to reference
Zostera marina
Subarctic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.943538
https://doi.org/10.1594/PANGAEA.943538
Description
Summary:Eelgrass shoots (Zostera marina) from Rimouski, QC, were exposed in July 2020 to a natural gradient of light intensity, ranging from 6 to 860 µmol photons/m²/s, to assess the species' capacity to respond to light attenuation. After 5 and 25 days of light exposure, photosynthetic responses were examined using PAM (Pulse Amplitude Modulated) fluorometry. Rapid Light Curves (RLC) were carried out on the second leaf of each shoot and were used for extraction of photosynthetic parameters, such as the photosynthetic efficiency (alpha), the photosynthetic capacity (ETRmax), and the onset of light saturation of the photosynthetic apparatus (Ek).

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