Marine finfish effluent bioremediation: Effects of stocking density and temperature on nitrogen removal capacity of Chondrus crispus and Palmaria palmata (Rhodophyta)

作者：Kim Jang K^*; Duston Jim; Corey Peter; Garbary David J

来源：Aquaculture, 2013, 414: 210-216.

DOI：10.1016/j.aquaculture.2013.08.008

• IMTA (integrated multi-trophic aquaculture)
• Nutrient bioremediation
• Chondrus crispus
• Palmaria palmata
• Atlantic halibut

Optimal stocking density of the marine red algae Chondrus crispus and Palmaria palmata was determined to maximize productivity and nitrogen removal in a land-based Atlantic halibut farm. Both species were cultured at 0.2, 2, 4, 6 and 10 kg m(-2) for four weeks at 140 +/- 10 mu mol photons m(-2) s(-1) of photosynthetically active radiation (PAR) and 16: 8 L: D photoperiod. For each species, two rearing temperatures were compared at different times of the year: 6 (Dec.) and 13 degrees C (June) for C. crispus, and 6 (Mar.) and 16 degrees C (July) for P. palmata. Growth rates of both species were inversely dependent on stocking density at all temperatures; however, the productivity (g fresh weight d(-1)) in Chondrus was significantly higher at 2 kg m(-2) than 0.2 kg m(-2) at both temperatures. By contrast, productivity of Palmaria was independent of stocking densities of 0.2 through 6.0 kg m(-2) at both temperatures. The net N removal in Chondrus was the highest at 2.0 kg m(-2) at both temperature conditions. Palmaria also showed the highest N removal at 2.0 kg m(-2) at 6 degrees C but at 4.0 kg m(-2) at 16 degrees C. Overall, C. crispus was the better performer year-round than P. palmata in terms of productivity and nutrient removal capacity.

• 出版日期2013-11-15