ANSC 4100 Lecture Notes - Lecture 16: Offshore Aquaculture, Jellyfish, Sea Louse
11 Apr 2018
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Lecture #16 aquaculture: aquaculture is as diverse as its species distribution. 8 common challenges for global producers: site location, animal housing/system design, animal recording, access to good genetics, fish health, nutrition and feed use optimization, product quality and differentiation, regulatory compliance and social license. Asia 89% of global production majority in ponds: site location, biological requirements, environmental and social risks, access to markets socioeconomics of area infrastructure regulatory environment, near-shore (coastal), 0-500 m, off- coast, 500m-3km, offshore, >3km. Consumer appeal decreases as you move away from the shore: 1-5 year leases in canada how to plan long-term? threats from: Historical profiles and seasonal changes: dissolved oxygen, water chemistry ph, ammonia, environmental and social impact. Water provides oxygen, thermal energy and nutrients also retains metabolic wastes (co2, nh4) Currents and water exchange: mixing of water bodies and their nutrients. Determines algal/planktonic activity: maintains dissolved oxygen removes metabolic wastes influenced by: topography/bathymetry, water temperature, cage configuration, seasonal mixing.
