Environmental impact of kelp (Saccharina latissima) aquaculture

MARINE POLLUTION BULLETIN

卷:155

Article

Visch, Wouter^1,3  Kononets, Mikhail²  Hall, Per O. J.²  Nylund, Goran M.¹  Pavia, Henrik¹ 

[1] Univ Gothenburg, Dept Marine Sci, Tjarno Marine Lab, SE-45296 Stromstad, Sweden

[2] Univ Gothenburg, Dept Marine Sci, Box 461, SE-40530 Gothenburg, Sweden

[3] Univ Tasmania, Inst Marine & Antarctic Studies, 20 Castray Esplanade, Hobart, Tas 7004, Australia

关键词: Aquaculture;    Benthic oxygen uptake;    Environmental impact;    Kelp;    Seaweed;    Saccharina latissima;   

DOI  :  10.1016/j.marpolbul.2020.110962

来源: Elsevier

【 摘 要 】

The aim of the study was to assess the effect of seaweed cultivation on the coastal environment. We analysed a multitude of environmental parameters using an asymmetrical before after control impact (BACI) design, comparing the seaweed farm (impact) with multiple unaffected locations (controls). The seaweed farm had a significant positive effect on benthic infauna (p < 0.05) and was found to attract 17 mobile faunal and 7 other seaweed species, indicating that the farmed crop may provide habitat to mobile faunal species. A light attenuation of approximately 40% at 5 m depth was noted at the peak of the seaweed biomass just before harvest. No changes were observed in benthic oxygen flux, dissolved nutrient concentrations, and benthic mobile fauna between farm and control sites. These results show that seaweed aquaculture has limited environmental effects, especially compared to other forms of aquaculture such as fish and bivalve farming.

【 授权许可】

Free