00000nam 2200000za 4500 9.846178 CaOODSP 20221107153134 cr ||||||||||| 171026s2017 oncabd ob f000 0 eng d CaOODSP eng eng fre n-cn--- Fs70-5/2017-059E-PDF Otu, Megan Kristin. Freshwater cage aquaculture [electronic resource] : ecosystems impacts from dissolved and particulate waste phosphorus / Megan K. Otu, Dominique P. Bureau, Cheryl L. Podemski. Ottawa : Fisheries and Oceans Canada, Canadian Science Advisory Secretariat, 2017. v, 55 p. : charts (some col.), col. ill., maps (some col.) Canadian Science Advisory Secretariat (CSAS), research document, 1919-5044 ; 2017/059, Central and Arctic Region Cover title. “October 2017.” Includes bibliographical references. “Open net-pen finfish aquaculture operations in freshwaters release waste directly into aquatic environments. These wastes contain phosphorus (P) in the form of particulate P (e.g., faeces and uneaten feed) or dissolved P (e.g., soluble P released from feed, faeces, and metabolic excretions of the fish). Phosphorus is the nutrient most often limiting primary production (i.e., photosynthetic rates and biomass) in freshwater and, thus, anthropogenic additions of P raise concerns for potential impacts on lake productivity. Assessing and mitigating the adverse effects of P loading is critical to proper management of freshwater resources. This Canadian Science Advisory Secretariat (CSAS) review does not constitute a formal risk assessment of P inputs from cage aquaculture operations in Canadian freshwaters, but instead, synthesizes the current state of science with regards to two key components necessary to understanding the potential for effects of P waste from aquaculture: the estimated P loads per tonne of Rainbow Trout (Oncorhynchus mykiss Walbaum) produced and the lake response to such P loads"--Abstract, p. iv. Includes abstract in French. gccst Fish farming gccst Water pollution gccst Environmental impact gccst Lakes Bureau, D. (Dominique), 1970- Podemski, Cheryl L. Canada. Department of Fisheries and Oceans. Canadian Science Advisory Secretariat. Research document (Canadian Science Advisory Secretariat) 1919-5044 ; 2017/059, Central and Arctic Region (CaOODSP)9.507396 PDF 1.65 MB https://publications.gc.ca/collections/collection_2017/mpo-dfo/Fs70-5-2017-059-eng.pdf