Cimon, Stéphanie; Deslauriers, Annie; Cusson, Mathieu (2021): Relative eelgrass leaf elongation and microalgal epiphyte load on eelgrass leaf measured through a multi-factorial in situ experiment of 10 weeks in a eelgrass bed in St. Lawrence Estuary (Baie-Saint-Ludger, Canada) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.931114
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Abstract:
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 eelgrass relative leaf elongation (RLE) and of microalgal epiphyte load on leaves. REL was evaluated once, as a proxy for growth, using five shoots per plot that were each marked with a reference hole at the top of the sheath using a pushpin marked at the end of Period T1 (two weeks after reducing eelgrass density and at the same time than adding nutrients sediment enrichment and shades). After 19 days, we collected the shoots and brought them back to the lab where leaf elongation was measured as the displacement of the mark relative to the reference mark on the oldest nongrowing leaf (Olesen & Sand-Jensen 1994). Total leaf elongation was then divided by sheath length and the number of days of elongation. We estimated the epiphyte (microalgae) load on eelgrass by scraping the leaves of one randomly selected shoot; we then filtered the water containing the epiphytes on GF/F filters that were then kept wrapped in aluminum foil at -80 °C until analysis. Epiphyte load was assessed using chlorophyll extraction with 90% acetone, following Parsons et al. (1984). Calculated chlorophyll weight was then divided by shoot dry weight.
Related to:
Cimon, Stéphanie; Deslauriers, Annie; Cusson, Mathieu (2021): 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) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.930967
Cimon, Stéphanie; Deslauriers, Annie; Cusson, Mathieu (2021): 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) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.931116
Cimon, Stéphanie; Deslauriers, Annie; Cusson, Mathieu (2021): Biomass (dry weight) of epiphytic microalgae measured through a multi-factorial in situ experiment of 10 weeks in a eelgrass bed in St. Lawrence Estuary (Baie-Saint-Ludger, Canada) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.931118
Cimon, Stéphanie; Deslauriers, Annie; Cusson, Mathieu (2021): Eelgrass biomass (dry weight) distribution measured through a multi-factorial in situ experiment of 10 weeks in a eelgrass bed in St. Lawrence Estuary (Baie-Saint-Ludger, Canada) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.931120
Cimon, Stéphanie; Deslauriers, Annie; Cusson, Mathieu (2021): Eelgrass biomass (dry weight) measured through a multi-factorial in situ experiment of 10 weeks in a eelgrass bed in St. Lawrence Estuary (Baie-Saint-Ludger, Canada) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.931117
Cimon, Stéphanie; Deslauriers, Annie; Cusson, Mathieu (2021): 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) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.931119
Cimon, Stéphanie; Deslauriers, Annie; Cusson, Mathieu (2021): Macro-species taxonomy measured through a multi-factorial in situ experiment of 10 weeks in a eelgrass bed in St. Lawrence Estuary (Baie-Saint-Ludger, Canada) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.931113
Cimon, Stéphanie; Deslauriers, Annie; Cusson, Mathieu (2021): Multiple stressors and disturbance effects on eelgrass and epifaunal macroinvertebrate assemblage structure. Marine Ecology Progress Series, 657, 93-108, https://doi.org/10.3354/meps13546
Cimon, Stéphanie; Deslauriers, Annie; Cusson, Mathieu (2021): Soluble sugar and starch content in eelgrass leaves and root-rhizomes measured through a multi-factorial in situ experiment of 10 weeks in a eelgrass bed in St. Lawrence Estuary (Baie-Saint-Ludger, Canada) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.931121
Further details:
Olesen, Birgit; Sand-Jensen, K (1994): Patch dynamics of eelgrass Zostera marina. Marine Ecology Progress Series, 106, 147-156, https://doi.org/10.3354/meps106147
Coverage:
Latitude: 49.133300 * Longitude: -67.233300
Date/Time Start: 2015-08-05T00:00:00 * Date/Time End: 2015-08-06T00:00:00
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Cimon, Stéphanie | Geocode | ||
| 2 | Sample code/label | Sample label | Cimon, Stéphanie | |||
| 3 | Density | Density | Cimon, Stéphanie | Ambient eelgrass shoot density (Ambient, D-) or 80% reduced eelgrass shoot density (Reduced, D+) | ||
| 4 | Nutrient | Nutrient | Cimon, Stéphanie | No nutrient addition (Natural, N-) or nutrient enrichment (Enriched, N+, N:P:K = 15:3:3, 75 g N m−2) | ||
| 5 | Shading | Shade | Cimon, Stéphanie | Natural light (No, S-) or light reduced by ~68% with fiberglass screens between period T1 and period T2 (Yes, S+) | ||
| 6 | Treatment | Treat | Cimon, Stéphanie | D: Density, N: Nutrient, S: Shading | ||
| 7 | Period | Period | Cimon, Stéphanie | |||
| 8 | Plot | Plot | Cimon, Stéphanie | |||
| 9 | Leaf growth rate, relative | Leaf growth rate rel | 1/day | Cimon, Stéphanie | Total elongation of leaves using a push-pin hole divided by sheath lenght and number of days of elongation | |
| 10 | Chlorophyll a | Chl a | µg/g | Cimon, Stéphanie | Chlorophyll a analysis (Parsons et al., 1984, Pergamon Press, Oxford) | per g shoot biomass |
| 11 | Chlorophyll b | Chl b | µg/g | Cimon, Stéphanie | Chlorophyll a analysis (Parsons et al., 1984, Pergamon Press, Oxford) | per g shoot biomass |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
400 data points