00000nam 2200000zi 4500 9.920647 CaOODSP 20231005074455 m o d f cr mn||||||||| 230307t20232023oncab ob f000 0 eng d 9780660479101 CaOODSP eng rda CaOODSP eng eng fre n-cn-on y1y1 Fs97-6/3532E-PDF Fitzpatrick, Mark A. J., author. Assessment of beneficial use impairment #13, degradation of phytoplankton and zooplankton populations, in the Canadian waters of the Detroit River area of concern / by Mark A.J. Fitzpatrick, Kelly L. Bowen, Heather A. Niblock, Morgan Piczak, Mohiuddin Munawar, Warren J.S. Currie. Burlington, ON : Great Lakes Laboratory for Fisheries and Aquatic Sciences, Ontario and Prairie Region, Fisheries and Oceans Canada, 2023. ©2023 1 online resource (viii, 60 pages) : illustrations (some colour), colour map. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian technical report of fisheries and aquatic sciences, 1488-5379 ; 3532 Includes bibliographical references (pages 25-31). "Phytoplankton, zooplankton and microbial communities of the Canadian waters of the Detroit River were sampled during May, July, September and November of 2019 in order to provide guidance to the Remedial Action Plan regarding the status of Beneficial Use Impairment 13: Degradation of Phytoplankton and Zooplankton Populations. Eight sites between Lake St Clair and Amherstburg were sampled capturing both upstream – downstream as well as nearshore – offshore gradients. Biomass of each of the components including: phytoplankton, autotrophic picoplankton, heterotrophic nanoflagellates, ciliates, rotifers and zooplankton, was generally low with zooplankton biomass attenuating significantly downstream. Phytoplankton biomass was observed to be significantly higher nearshore than offshore. Primary (phytoplankton) productivity was moderately high, given the low phytoplankton biomass, and demonstrates the river supports viable phytoplankton assemblages. In general, the observed differences in the planktonic communities occurring within the Area of Concern could be attributed directly to riverine ecology. Likewise, our assessment of the organic carbon pool showed that, despite the low overall amount (50 – 100 mg C m⁻³ on average), the food web was still predominantly autotrophic and not bound up in heterotrophic microbes. Our survey did not find any evidence of anthropogenic impairment of the phytoplankton, zooplankton and microbial loop populations of the Detroit River"--Abstract, page vii. Includes abstracts in English and French. Phytoplankton populations Detroit River (Mich. and Ont.) Zooplankton Detroit River (Mich. and Ont.) Microbial populations Detroit River (Mich. and Ont.) Ecological surveys Detroit River (Mich. and Ont.) Phytoplancton Populations Detroit, Rivière de (Mich. et Ont.) Zooplancton Detroit, Rivière de (Mich. et Ont.) Micro-organismes Populations Detroit, Rivière de (Mich. et Ont.) Inventaires écologiques Detroit, Rivière de (Mich. et Ont.) Canada. Department of Fisheries and Oceans, issuing body. Great Lakes Laboratory for Fisheries and Aquatic Sciences, issuing body. Canadian technical report of fisheries and aquatic sciences ; 3532. (CaOODSP)9.504449 PDF 1.84 MB https://publications.gc.ca/collections/collection_2023/mpo-dfo/Fs97-6-3532-eng.pdf