Miller, Cale A; Gazeau, Frédéric; Lebrun, Anaïs; Gattuso, Jean-Pierre; Alliouane, Samir; Urrutti, Pierre; Schlegel, Robert; Comeau, Steeve (2024): Net community production of Arctic mixed kelp communities in response to warming, freshening, and attenuated light: a mesocosm study as per minute record [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.967056 (DOI registration in progress)
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Abstract:
Arctic marine ecosystems are experiencing rapid environmental changes with respect to warming, ice melt, and terrestrial run-off. The effects of these perturbations can act as multi-stressors where warming sea seawater, in combination with freshening from ice melt, and increased turbidity from terrestrial run-off affect benthic community structure and function. To examine the effects of warming, freshening, and turbidity on habitat forming macroalgae, we conducted a 2-month long ex situ experiment on mixed Arctic kelp communities in Ny-Ålesund, Svalbard from 03/07/2021 - 26/08/2021. Three experimental conditions (with 3x replicates) were tested against a dynamic real-time control where temperature was increased by + 3.3 and + 5.3 °C, salinity was reduced by ~ 4 and ~ 5, and irradiance was statically attenuated by ~ 25 and 40 % in 2 treatments. The third treatment was only warmed by + 5.3 °C from the control. In each 1 m³ mesocosm, oxygen (% O2), temperature, salinity, and photosynthetically active radiation (PAR) were continuously monitored. Mixed kelp communities comprised a biomass of ~ 4 kg fw (fresh weight) and ~ 500 g fw of small fauna. Weekly incubations were performed to calculate net community productivity (NCP) and used to estimate kelp benthic metabolism. We determined non-significant differences across treatments and provide NCP rates for mixed kelp communities in the Arctic.
Supplement to:
Miller, Cale A; Gazeau, Frédéric; Lebrun, Anaïs; Gattuso, Jean-Pierre; Alliouane, Samir; Urrutti, Pierre; Schlegel, Robert; Comeau, Steeve (in review): Productivity of Mixed Kelp Communities in an Arctic Fjord Exhibit Tolerance to a Future Climate. Preprint, https://doi.org/10.2139/ssrn.4563719
Further details:
Project(s):
Arctic Biodiversity & Livelihoods (FACE-IT)
Coverage:
Date/Time Start: 2021-06-30T22:01:00 * Date/Time End: 2021-08-29T13:01:00
Event(s):
Ny_Ålesund_Mesocosm_2021 * Date/Time Start: 2021-06-30T22:01:00 * Date/Time End: 2021-08-29T13:01:00 * Location: Ny-Ålesund, Spitsbergen * Method/Device: Mesocosm experiment (MESO)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Experiment | Exp | Miller, Cale A | |||
| 2 | Analysis date/time, experiment | Date/time analysis exp | Miller, Cale A | [UTC+0] | ||
| 3 | Treatment | Treat | Miller, Cale A | |||
| 4 | Replicates | Repl | # | Miller, Cale A | ||
| 5 | Incubation duration | Inc dur | weeks | Miller, Cale A | ||
| 6 | Oxygen | O2 | µmol/kg | Miller, Cale A | Oxygen Optical digital sensor, Aqualabo, PODOC | |
| 7 | Treatment: temperature | T:temp | °C | Miller, Cale A | Conductivity digital sensor, Aqualabo, PC4E | |
| 8 | Treatment: salinity | T:sal | Miller, Cale A | Conductivity digital sensor, Aqualabo, PC4E | ||
| 9 | Radiation, photosynthetically active per minute | PAR | mol photons/m2/min | Miller, Cale A | Photosynthetic Active Radiation Logger (PAR), Odyssey® |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
218787 data points
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