00000nam 2200000zi 4500 9.873441 CaOODSP 20241203113649 m o d f cr bn||||||||| 190523s1989 oncd ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn--- En13-5/89-41E-PDF Mazumder, Asit, 1954- author. A comparison of lakes and lake enclosures with contrasting abundances of planktivorous fish / A. Mazumder [and four others]. Burlington, Ontario : Lakes Research Branch, National Water Research Institute, Canada Centre for Inland Waters, [1989]. 1 online resource (29, [4] pages) : charts. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; no. 89-41 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 18-22). "Traditionally, it was thought that nutrients, particularly phosphorus, was solely responsible for the quantity and quality of the phytoplankton species composition in lakes. In the present investigation, nutrients (nitrogen and phosphorus) and planktivorous fish just over 1 year old were added to enclosures in a 2x2 factorial design. In this way, nutrienteffects could be distinguished from “top down" effects of the fish. Results were compared to other lakes with known levels of planktivorous fish"--Executive summary. Includes summary in French. gccst Lakes gccst Water management gccst Aquatic ecosystems Canada. Environment Canada. National Water Research Institute (Canada). Lakes Research Branch. Canada Centre for Inland Waters. NWRI contribution ; no. 89-41. (CaOODSP)9.844121 PDF 3.44 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-89-41-eng.pdf