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Limnological variables from 30 lakes situated along the proposed Mackenzie Gas Project pipeline route in the Canadian Northwest Territories were examined. Sampled lakes were shallow (Zmax = 1.5-30 m; mean depth = 6.6 m), generally nutrient poor (TP often ≤10 μg L-1), and alkaline (mean pH = 8.2). Floodplain lakes located within Arctic-tundra watersheds tended to have higher conductivity and major ions (Na, Cl, Ca, SO4) concentrations relative to non-flooded Arctic-tundra or forest-tundra lakes, reflecting differences in vegetation, elevation and most importantly, proximity to the Mackenzie River. The first two axes of a principal component analysis explained 56.1% of the variance in the environmental data. Variables most strongly associated with the first principal component axis were latitude, elevation, dissolved oxygen, temperature, conductivity and turbidity while the second principal component axis represented gradients of nutrients and Chlorophyll-a (Chl-a). Factors affecting Chl-a varied among the different ecological zones. This study provides reference data for future monitoring of potential effects of development and warming in the Arctic. OGBEBO, Fortune E., Marlene S. EVANS, Robert B. BRUA, and Jonathan J. KEATING. 2009. “Limnological Features and Models of Chlorophyll-a in 30 Lakes Located in the Lower Mackenzie River Basin, Northwest Territories (Canada)”. Journal of Limnology 68 (2):336-51. https://doi.org/10.4081/jlimnol.2009.336. More Citation Formats ACM ACS APA ABNT Chicago Harvard MLA Turabian Vancouver Download Citation Endnote/Zotero/Mendeley (RIS) BibTeX Downloads Download data is not yet available. Citations List of Cited By : Global Change in Multispecies Systems Part 1 Mariana Meerhoff, Franco Teixeira-de Mello, Carla Kruk, Cecilia Alonso, Iván González-Bergonzoni, Juan Pablo Pacheco, Gissell Lacerot, Matías Arim, Meryem Beklioğlu, Sandra Brucet, Guillermo Goyenola, Carlos Iglesias, Néstor Mazzeo, Sarian Kosten, Erik Jeppesen Advances in Ecological Research : 2012 Drivers of fish biodiversity in a rapidly changing permafrost landscape Alyssa Murdoch, Derek K. Gray, Jennifer Korosi, Jasmina M. Vucic, Rachel S. Cohen, Sapna Sharma Freshwater Biology : 2021 Latitudinal gradients and local control of aquatic insect richness in a large river system in northern Canada Ryan W. Scott, David R. Barton, Marlene S. Evans, Jonathan J. Keating Journal of the North American Benthological Society : 2011 Latitudinal and photic effects on diel foraging and predation risk in freshwater pelagic ecosystems Adam G. Hansen, David A. Beauchamp, DeHua Wang Journal of Animal Ecology : 2015 Themes by Openjournaltheme.com authors FOR AUTHORS SUBMIT YOUR PAPER Guide for Authors Benefits for Authors How to write a scientific paper How to write a Review article Article Processing Charge Registering new species in ZooBank reviewers FOR REVIEWERS Benefits for Reviewers How to review Thanks to Reviewers links LINKS CNR-IRSA - Water Research Institute Associazione Italiana di Oceanologia e Limnologia International Society of Limnology EFFS - European Federation for Freshwater Sciences International Society for Microbial Ecology flyer JOURNAL FLYER Phytoplankton-zooplankton coupling in a cascade of hypertrophic fishponds 21 September 2023 Marija Radojičić et al. Vol. 82 (2023) Seasonal variation in the relative strength of bottom-up vs top-down effects in pelagic cladoceran populations identified through contribution analysis of birth rate 7 September 2023 Anna A. Kasparson et al. 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Vol. 82 (2023) @j_limnology Most read last month Longitudinal recovery gradient of macroinvertebrates during different hydrological scenarios in a downstream river reach 107 A georeferenced dataset for occurrence records of the phylum Rotifera in Africa 90 The Freshwater Biodiversity Information System (FBIS) fish data: a georeferenced dataset of freshwater fishes occurring in South Africa 74 Most Cited Article Formation of large colonies: a defense mechanism of Microcystis aeruginosa under continuous grazing pressure by flagellate Ochromonas sp. Cited: 60 19 January 2012 Zhen Yang et al. A numerical index for evaluating phytoplankton response to changes in nutrient levels in deep mediterranean reservoirs Cited: 60 1 February 2009 Aldo MARCHETTO et al. Last Updated: 3 October 2023 Keywords The Journal of Limnology is an Open Access, academic peer-reviewed journal published by PAGEPress®, Pavia, Italy on behalf of the CNR-IRSA, Italy. All credits and honors to PKP for their OJS. Registered in print in Verbania, 7-10-1959, n. 58.

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