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  • Absorption factor, photosynthetic; Absorption factor, total; Acclimation; Calculated; Chamber number; DATE/TIME; East_Rimouski; Eelgrass; Experiment day; Hand picking; Laboratory experiment; light intensity; PAM fluorometry; photophysiology; Quebec, Canada; Replicate; Species; Specimen identification; subarctic; Temperature, water; Treatment: light intensity; Type of study; Uniform resource locator/link to reference; Zostera marina  (1)
  • Abundance; Calculated from three 20-cm diameter hoops; DATE/TIME; Density; Density, shoots; Eelgrass; intertidal; invertebrates; MULT; Multiple investigations; multiple stress; Nutrient; Period; Plot; Quebec, Canada; Sample code/label; Shading; StLawrence_Estuary; stress interaction; Treatment  (1)
  • Abundance; Counting 〉8.0 mm fraction; Counting 0.5-0.7 mm fraction; Counting 0.7-1.0 mm fraction; Counting 1.0-1.4 mm fraction; Counting 1.4-2.0 mm fraction; Counting 2.0-2.8 mm fraction; Counting 2.8-4.0 mm fraction; Counting 4.0-5.6 mm fraction; Counting 5.6-8.0 mm fraction; Density; Eelgrass; Epifaunal species abundance; intertidal; invertebrates; MULT; Multiple investigations; multiple stress; Nutrient; Period; Plot; Quebec, Canada; Shading; Species; StLawrence_Estuary; stress interaction; Treatment  (1)
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  • 1
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    Unknown
    Abundances of intertidal macro-species measured through a multi-factorial in situ experiment of 10 weeks in a eelgrass bed in St. Lawrence Estuary (Baie-Saint-Ludger, Canada) (2021)
    PANGAEA
    Details
    Publication Date: 2024-05-07
    Description: We evaluated single and interactive effects of density reduction of Zostera marina L., a habitat-forming species, shading, and sediment nutrient enrichment on the response of intertidal epibenthic macro-species abundances. Abundances were measured two weeks after reducing eelgrass density (Period T1), then nutrients were added to the sediments and shades were added above the bed. Abundances were measured three weeks later (Period T2), then shades were taken down. Final abundances were measured five weeks later (Period T3). Epibenthos was collected using mesh bags (mesh size of 500 µm, diameter about 18 cm), each individual collected was identified then sifted through a series of sieves as a proxy for biomass (ash free dry weight; AFDW).
    Keywords: Abundance; Counting 〉8.0 mm fraction; Counting 0.5-0.7 mm fraction; Counting 0.7-1.0 mm fraction; Counting 1.0-1.4 mm fraction; Counting 1.4-2.0 mm fraction; Counting 2.0-2.8 mm fraction; Counting 2.8-4.0 mm fraction; Counting 4.0-5.6 mm fraction; Counting 5.6-8.0 mm fraction; Density; Eelgrass; Epifaunal species abundance; intertidal; invertebrates; MULT; Multiple investigations; multiple stress; Nutrient; Period; Plot; Quebec, Canada; Shading; Species; StLawrence_Estuary; stress interaction; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 10640 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
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    Unknown
    Light absorption of intertidal temperate seagrass Zostera marina from Rimouski, QC, Canada, under a light intensity gradient (2022)
    PANGAEA
    Details
    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, the fraction of incident visible light absorbed by the leaves (absorptance) was quantified with a Lambda850 (PerkinElmer, USA) spectrophotometer with integrating sphere. Light absorption by the photosynthetic components of the leaves (photosynthetic absorptance) was distinguished from the total absorptance by correcting for the non-photosynthetic absorptance at 750 nm (Cummings and Zimmerman, 2003).
    Keywords: Absorption factor, photosynthetic; Absorption factor, total; Acclimation; Calculated; Chamber number; DATE/TIME; East_Rimouski; Eelgrass; Experiment day; Hand picking; Laboratory experiment; light intensity; PAM fluorometry; photophysiology; Quebec, Canada; Replicate; 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, 913 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 3
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    Unknown
    Eelgrass shoot density measured through a multi-factorial in situ experiment of 10 weeks in a eelgrass bed in St. Lawrence Estuary (Baie-Saint-Ludger, Canada) (2021)
    PANGAEA
    Details
    Publication Date: 2024-05-07
    Description: We evaluated single and interactive effects of shading and sediment nutrient enrichment on the response of Zostera marina L. shoot density. Shoot density was evaluated using counts from three hoops of 20-cm diameter. Shoot density was measured before starting the experiment (T0), five weeks after the start of the experiment (T2) and at the end of the experiment after ten weeks (T3).
    Keywords: Abundance; Calculated from three 20-cm diameter hoops; DATE/TIME; Density; Density, shoots; Eelgrass; intertidal; invertebrates; MULT; Multiple investigations; multiple stress; Nutrient; Period; Plot; Quebec, Canada; Sample code/label; Shading; StLawrence_Estuary; stress interaction; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 960 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
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