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Subcellular to shoot-scale photoacclimation of intertidal temperate seagrass Zostera marina to light attenuation (2022)

Léger-Daigle, Romy ; Noisette, Fanny ; Bélanger, Simon ; [et al.]

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Publication Date: 2024-05-07

Description: The dataset compiles pigment content, absorptance data, photosynthetic parameters and primary production data as proxies for summertime photoacclimation of the temperate intertidal eelgrass Zostera marina after a 25-day exposure to a natural light intensity gradient (6, 36, 74, 133, 355, 503 and 860 µmol photons/m²/s) under laboratory conditions at the Pointe-au-Père research station, East Rimouski, Quebec, Canada. The data bundle contains: 1) photosynthetic and total absorptance data at the end of the experiment, which respectively represent the fraction of incident visible light absorbed by the photosynthetic tissues corrected and not corrected for non-photosynthetic absorption; 2) pigment content at the end of the experiment, which includes chlorophyll a and b and total carotenoids contents; 3) photosynthetic parameters obtained by Rapid Light Curves (RLC) on days 5 and 25, including photosynthetic apparatus efficiency (alpha), capacity (ETRmax) and saturation (Ek); 4) whole shoot primary production at the end of the experiment, which was calculated from oxygen fluxes under light and dark conditions, and normalized by leaf surface.

Keywords: Acclimation; East_Rimouski; Eelgrass; Hand picking; Laboratory experiment; light intensity; PAM fluorometry; photophysiology; Quebec, Canada; subarctic; Zostera marina

Type: Dataset

Format: application/zip, 4 datasets

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Primary production of intertidal temperate seagrass Zostera marina from Rimouski, QC, Canada, under a light intensity gradient (2022)

Léger-Daigle, Romy ; Noisette, Fanny ; Bélanger, Simon ; [et al.]

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Publication Date: 2024-05-07

Description: 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 25 days of light exposure, primary production of whole eelgrass shoots was assessed by respirometry. Net primary production (NPP), gross primary production (GPP) and dark respiration were calculated from oxygen fluxes of incubated shoots, under their respective light treatment and in total darkness, and standardized to leaf surface.

Keywords: Acclimation; Calculated; Chamber number; DATE/TIME; East_Rimouski; Eelgrass; Experiment day; Fiber optic oxygen meter, Fibox 4, Presens, Germany; Gross photosynthesis rate, oxygen; Hand picking; Laboratory experiment; Leaf area; light intensity; Measured using software ImageJ; Net photosynthesis rate, oxygen; Oxygen production rate; PAM fluorometry; photophysiology; Quebec, Canada; Replicate; Respiration rate, oxygen; Species; Specimen identification; subarctic; Temperature, water; Treatment: light intensity; Type of study; Uniform resource locator/link to reference; Zostera marina

Type: Dataset

Format: text/tab-separated-values, 672 data points

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Remote sensing reflectance aggregated within +/-6 nm of SeaWiFS, MODIS-AQUA, VIIRS, OLCI and MERIS bands (2019)

Valente, André ; Sathyendranath, Shubha ; Brotas, Vanda ; [et al.]

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Publication Date: 2024-05-28

Keywords: Comment; DATE/TIME; DEPTH, water; Identification; LATITUDE; LONGITUDE; Remote sensing reflectance at given wavelength; Wavelength

Type: Dataset

Format: text/tab-separated-values, 2997906 data points

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Remote sensing reflectance aggregated within +/-2 nm of SeaWiFS, MODIS-AQUA, VIIRS, OLCI and MERIS bands (2019)

Valente, André ; Sathyendranath, Shubha ; Brotas, Vanda ; [et al.]

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Publication Date: 2024-05-28

Keywords: Comment; DATE/TIME; DEPTH, water; Identification; LATITUDE; LONGITUDE; Remote sensing reflectance at given wavelength; Wavelength

Type: Dataset

Format: text/tab-separated-values, 2137110 data points

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