00000nam 2200000zi 4500 9.917608 CaOODSP 20230118152419 m o d f cr mn||||||||| 221123t20222022nscab ob f000 0 eng d 9780660463797 CaOODSP eng rda CaOODSP eng eng fre n-cn-ns ln----- Fs97-6/3513E-PDF Vercaemer, B. (Bénédikte), 1966- author. Distribution and condition of eelgrass (Zostera marina) in the historical goldmining region of Goldboro, Nova Scotia / by Bénédikte Vercaemer, John M. O’Brien, Javier Guijarro-Sabaniel and Melisa C. Wong. Dartmouth, Nova Scotia : Bedford Institute of Oceanography, Fisheries and Oceans Canada, 2022. ©2022 1 online resource (v, 67 pages) : illustrations (chiefly colour), colour maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian technical report of fisheries and aquatic sciences, 1488-5379 ; 3513 The PDF copy has been replaced (2023-01-18) with an amended version as requested by the publisher. Includes bibliographical references (pages 39-43). "Nearshore marine construction activities often involve projects conducted directly in or adjacent to eelgrass beds and can have detrimental effects on eelgrass health, through physical destruction of beds, smothering of plants by sediment, and light reduction from turbidity. A liquefied natural gas (LNG) marine terminal is proposed to be constructed near Goldboro in Isaacs Harbour on the Eastern shore of Nova Scotia in an area where sediments are contaminated with heavy metals from historical goldmining operations. We conducted a pre-impact assessment of the eelgrass beds in Isaacs Harbour and in adjacent contaminated and non-contaminated harbours. We used underwater video to precisely map the eelgrass bed in the direct construction footprint in Isaacs Harbour and to identify eelgrass presence or absence in the nearby region. The overall condition of eelgrass plants in the surveyed area fell within the range of healthy plant characteristics (morphometrics and carbohydrates reserves) seen elsewhere along the Atlantic coast. However, a few stations displayed high arsenic and mercury contamination in sediments, which translated in some cases to high contamination in eelgrass rhizomes and leaves. There would be significant risk of impact on benthic habitat and contamination of marine biota from resuspension of sediments during a construction and operation of a ship terminal in Isaacs Harbour. This pre-impact assessment will allow DFO to assess the LNG terminal construction proposal and develop appropriate mitigation and monitoring procedures. Collected data will also be used for habitat-forming species distribution modeling to inform marine spatial and conservation planning"--Abstract, page iv. Includes abstracts in English and French. Zostera marina Nova Scotia Geographical distribution. Vegetation surveys Nova Scotia. Liquefied natural gas shipping terminals Environmental aspects Nova Scotia. Zostère marine Nouvelle-Écosse Distribution géographique. Inventaires de la végétation Nouvelle-Écosse. Terminaux de gaz naturel liquéfié Aspect de l'environnement Nouvelle-Écosse. Canada. Department of Fisheries and Oceans, issuing body. Bedford Institute of Oceanography, issuing body. Canadian technical report of fisheries and aquatic sciences ; 3513. (CaOODSP)9.504449 PDF 4.37 MB https://publications.gc.ca/collections/collection_2023/mpo-dfo/Fs97-6-3513-eng.pdf