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Data from: Sea ice increases benthic community heterogeneity in a seagrass landscape
Borealis
Pascal, Ludovic; Bernatchez, Pascal; Chaillou, Gwénaëlle; Nozais, Christian; Lapointe Saint-Pierre, Mathilde; Archambault, Philippe — 2020-01-23 These data include macrofaunal (i.e. > 0.5 mm) densities and biomasses and environmental data from the monitoring of a seagrass meadow located at the Manicouagan peninsula, Quebec, Canada. Sampling occurred during the year 2018 (April, June, August and October). Sample were collected in vegetated areas (V) and in artificial (aTP) and natural (nTP) tidal pools.<br/> Data are organized in five tabular data files (.txt files; separator = tab, decimal = .)<br/> (1) Manicouagan_biomasses.txt includes biomasses (g blotted wet weight/m<sup>2</sup>) of sampled macrofaunal species<br/> (2) Manicouagan_densities.txt includes densities (individuals/m<sup>2</sup>) of sampled macrofaunal species<br/> (3) Manicouagan_porewater_profiles.txt include depth profile of nutrient (NH<sub>4</sub><sup>+</sup>, NO<sub>2</sub> + NO<sub>3</sub><sup>-</sup> and PO<sub>4</sub><sup>3-</sup>) concentrations (µM)<br/> (4) Manicouagan_Sediment_characteristics.txt includes median sediment grain size (D50; µm) sediment porosity (volume ration), particulate organic carbon content (OC; % Dry Weight), particulate total nitrogen content (TN; % DW), sediment chlorophyll a content (chla; µg/g), sediment phaeopigment content (µg/g), Total (Seagrass), above ground (AboGround) and below ground (BelGround) seagrass biomass (g/m<sup>2</sup>) and nutrients (NH<sub>4</sub><sup>+</sup>, NO<sub>2</sub> + NO<sub>3</sub><sup>-</sup> and PO<sub>4</sub><sup>3-</sup>) stock (µmol/m<sup>2</sup>) in the first 8 cm of the sediment column. (5) Manicouagan_Bacteria.txt include extractible bacteria count (Abundance in number of cells per mL of sediment) and fluorescence (green fluorescence, relative unit) in the sediment.
University of Victoria Dataverse Translation missing: fr.blacklight.search.logo
Data from: Benthos response to nutrient enrichment and functional consequences in coastal ecosystems
Borealis
Pascal, Ludovic; Chaillou, Gwénaëlle; Nozais, Christian; Cool, Joannie; Bernatchez, Pascal; Letourneux, Kevin; Archambault, Philippe — 2022-02-15 <h1>General description</h1> <p>This dataset include the data collected during two experiments carried out in May and August 2019 to investigate the mechanisms involved in the benthic response to nutrient enrichment in coastal ecosystems.</p> <p>Sample were collected in an intertidal mudflat in Isle-Verte Bay (48° 2’ 36.76” N; 69° 21’ 3.736” W, St. Lawrence estuary, QC, Canada) in vegetated areas (Veg) and ice made-tidal pools (UnV). They were then exposed, in a well-controlled laboratory experiment, to three intensities of nutrient enrichment (N0, N1 and N2) during 30 days.</p> <hr> <h1>Description of the dataset</h1> <p><em>Data are organized in five tabular data files (.txt files; separator = tab, decimal = ., missing data = NA)</em>. Please refer to related publication for experimental design and analytical methods</p> <h3>Sediment_characteristics.txt</h3> <p>This file includes median sediment grain size (D<sub>50</sub>; µm), sediment porosity (volume ratio), Sediment organic matter (SOM; %Loss on ignition), Chlorophyll <em>a</em> content (Chl <em>a</em>; µg g<sup>-1</sup>), phaeopigments (µg g<sup>-1</sup>), Seagrass leaf biomasse (g) and Seagrass leaf elongation (cm day<sup>-1</sup>)</p> <h3>Macrofauna_density.txt</h3> <p>This file includes densities (individuals m<sup>-2</sup>) of sampled macrofaunal species</p> <h3>Bioturbation.txt</h3> <p>This files includes bioturbation metrics such as maximum penetration depth of luminophores (MPD; cm), Biodiffusion coefficient (D<sub>b</sub>; cm<sup>2</sup> y<sup>-1</sup>) and porewater exchange rate (Q; mL m<sup>-2</sup> h<sup>-1</sup>)</p> <h3>Oxygen_dynamics.txt</h3> <p>This file includes diffusive oxygen uptake (J; mmol m<sup>-2</sup> d<sup>-1</sup>) and oxygen penetration depth (Z; µm)</p> <h3>Nutrient_profiles.txt</h3> <p>This file includes porewater nutrient (NH<sub>4</sub><sup>+</sup>, NO<sub>3</sub><sup>-</sup> and PO<sub>4</sub><sup>3-</sup>; µM) profiles within the sediment column (depth; cm)</p> <h3>Benthic_fluxes.txt</h3> <p>This file includes oxygen (TOU) and nutrients ((NH<sub>4</sub><sup>+</sup>, NO<sub>3</sub><sup>-</sup>) benthic fluxes (mmol m<sup>-2</sup> h<sup>-1</sup>)</p>

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(auteur : Bernatchez, Pascal)

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