Biodiversity component effects on macroalgal primary productivity

• Main Authors: Cusson, Mathieu, Lemieux, Julie
• Format: Dataset
• Language: English
• Published: PANGAEA
• Subjects: abundance effect; Algae assemblage; Balance; Benthic Chamber; Calculated; CHAM; Chamber volume; Cloud cover; complementary effect; evenness effect; Event label; Experiment; Field experiment; Gas analyzer; LI-COR Biosciences; LI-820; coupled with data logger; LI-1400; Gross primary production of carbon dioxide; per wet mass; identity effect; Incubation duration; maximum; minimum; Macroalgae; Macroalgae_St_Lawrence_2012; Macroalgae_St_Lawrence_2013; Macroalgal species collected; MESO; Mesocosm experiment; Net primary production of carbon dioxide; overyielding; PAR sensor LI-190 (Spherical Underwater Quantum Sensor) Li-COR Inc.; Photosynthetic photon; flux density; primary production respiration; Replicate; Respiration rate; carbon dioxide; richness effect; Sampled; St. Lawrence Estuary; Subarctic
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.967649

The objective of this study was to disentangle the effects of components of diversity and primary productivity within subarctic intertidal macroalgal communities. This study was done using common abundant macroalgal species occurring naturally together in the mid-low intertidal zone (48°37'42.5'' N, 68°11'55.7'' W) of the St. Lawrence Estuary, near the municipality of Sainte-Flavie (Quebec, Canada). We used two canopy species (genus Fucus sp.) and four of their associated subcanopy species to build realistic assemblages having six different levels of richness, two levels of evenness, and five levels of abundance. The productivity variables of respiration (R), net (NPP), and gross primary production (GPP) of these assemblages were measured in mesocosms (0.09 m²) during summer 2012 and 2013 as mmol CO₂ m⁻² h⁻¹ per gram wet weight of macroalgae.