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Freshwater- Master Homepage

Updated: November 09, 2012        Credits and our history        Select media articles        Professional Ethics Note: The numerous clickable web links are visible by change in colour

(Lakes/ponds)           (Marine)           (Public   Art)           (Culture)           (Our emphasis:-   Stage III and IV protocols) Knowledge_Videos upgraded as needed (the videos are select examples of over 330, mostly half-hour, educational videos that we produced over the years, and the knowledge is wholly relevant.) Our Submission, 2012 to the HRM's RP+5 initiative (in html format), and Submission, 2011 to the SEMO, HRM (in PDF format). Neither is all-encompassing, primarily due to the professional capabilities of municipal and provincial agencies in the wide spectrum of direct and indirect impacts on our invaluable freshwater resources.

Subsidiary contents (extensive listing is in the menu bar at the top of this page) 5 Minutes to Midnight (Climate Change) Narrative on water quality of freshwaters: Chemical vs Biological monitoring Lake Management Challenges based on paleoecological analyses Typology of (northern) lakes based on metabolic balance and ecosystem stoichiometry: "All lakes are humic, i.e., dystrophic ("misfed"), but some are more humic than others" Formal definition of trophic status: OECD Probability Distribution Diagrams Leading references in lake management and water quality Predictive modelling and current issues of lakes and rivers Watersheds jump menu Biological classification Miscellaneous: Fascinating Brook Trout Don't say you don't have enough time The Shubenacadie song (i.e., the Stonemason's song) "So they call this fortress Lakefront"

Pie chart on greenhouse-gas emissions in 2000 (in PDF), by source (cf. STERN REVIEW: The Economics of Climate Change). The Nobel Peace Prize for 2007 is awarded jointly to the UN’s Intergovernmental Panel on Climate Change (IPCC) and to former US Vice President, Albert Arnold (Al) Gore Jr. "The role of the IPCC is not to carry out or design research but rather to assess the massive body of peer-reviewed, published literature relevant to climate change. Some 2,500 reviewers, 800 contributing authors and 450 lead authors from more than 130 countries contributed to the Fourth Assessment, a five-year effort". What's next for the IPCC (cf. Nature Reports Climate Change, a publishing of Nature which is the world's foremost weekly scientific journal and is the flagship journal for Nature Publishing Group.)   5 Minutes to Midnight ---- Bulletin of the Atomic Scientists: "As in past deliberations, we have examined other human-made threats to civilization. We have concluded that the dangers posed by climate change are nearly as dire as those posed by nuclear weapons. The effects may be less dramatic in the short term than the destruction that could be wrought by nuclear explosions, but over the next three to four decades climate change could cause drastic harm to the habitats upon which human societies depend for survival....... This deteriorating state of global affairs leads the Board of Directors of the Bulletin of the Atomic Scientists--in consultation with a Board of Sponsors that includes 18 Nobel laureates--to move the minute hand of the “Doomsday Clock” from seven to five minutes to midnight"; January 17, 2007.

Narrative on water quality and lake management Overview on water quality; and Chemical vs Biological monitoring; and our sampling protocols. Lake Management Challenges based on paleoecological analyses (with salutations to Prof. Dr. John Smol FRCS, a recipient of several national/international awards among which is the NSERC Gerhard Herzberg Gold Medal in 2004. It is Canada's top scientist or engineer medal). "The power of the past: using sediments to track the effects of multiple stressors on lake ecosystems", an inclusive overview paper of year-2010.   Algal blooms in lakes linked to new environmental stressor- lakewater calcium decline through food web interactions.   Multiple stressors Community goals -and- watch a half-hour YouTube video titled, "Environmental Impact on Water Courses", to understand stormwater pollution in typical urban/suburban settings. Advanced treatment systems, in perpetuity, may be needed that are capable of removing most stormwater pollutants including those less than 10/20 microns! Formal definition of trophic status; Dr. Richard Vollenweider's dictum (OECD stalwart) on trophic states. Shallow lakes: Over-reliance on simple chemistry at a deep station of even a small lake may not tell the whole story. Indicator thresholds for anthropogenic stressors of freshwater lakes in NS.

Shalom Murti Mandaville Post-Grad Dip., Professional Lake Manage. (limneschebucto.ns.ca) with varied assistance from leading scientist-partners (present/past) and other professionals, mostly published/peer reviewed . Overview on our founding and Update: We were founded on the express encouragement of the Hon. John Leefe and senior staff of the Nova Scotia Environment Department in 1989; The inaugural invitation sent to a host of provincial and municipal bodies. Our extensive scientific research, to various degrees, is conducted as volunteers. The Challenge of Change, Our Province, Our Future, Our Choice, March 1991.

Think Globally, Act Locally!

Formal definition of trophic status (cf. Wetzel, 2001) "Trophy of a lake refers to the rate at which organic matter is supplied by or to the lake per unit time." Trophy, then, is an expression of the combined effects of organic matter to the lake! As developed originally and as largely used today, the trophic concept (e.g., TP, Cha, SD, and TN) refers to the pelagic-zone-planktonic portion of the lake ecosystem (cf. Tables 4.1 and 4.2, CCME & EC, 2004). The littoral flora and its often dominating supply of autochthonous organic matter to the system, was, and usually still is, ignored. Cautionary overview on predictive modelling

Vollenweider's dictum re the OECD Probability Distribution Diagrams: Notwithstanding the trophic state classifications based on pelagic parameters, listen to a 4-minute mp3 sound file of Dr. Richard Vollenweider promoting the use of the OECD probability distribution diagrams in order to establish trophic states with a high confidence level! Dr. Richard Vollenweider is a recipient of the top medal in limnology, the Naumann-Thienemann Medal, among several other awards!

Predictive modelling and current issues of lakes and rivers Cautionary overview on predictive modelling   Lake Carrying Capacities The HRM Regional Plan has several statements on its intent to protect lakes; see our submissions, and especially our submissions on Drafts #2 and #3 of the plan Lakes/rivers of present concern, under stress, or of imminent development pressures, and other lakes Around one thousand (1,000) lakes/ponds modelled and studied, to various degrees. Work is ongoing on another one thousand (1,000) lakes/ponds and reservoirs elsewhere and abroad

Jump menu listing the watersheds/headwaters (this is not a comprehensive listing of all the 2,000 lakes/ponds modelled/being modelled though): Watersheds/headwaters predominantly within HRM: Blind Bay (15 lakes & ponds) Chezzetcook Inlet (33 lakes & ponds) Clam Bay (6 lakes) Cole Harbour (4 lakes) Cow Bay River (8 lakes) Dartmouth Miscellaneous (5 lakes) East River (St Margarets) (10 lakes) Eastern Shore miscellaneous Halibut Bay (7 ponds) Hubbards Cove (21 lakes & ponds) Jeddore Harbour (17 lakes & ponds) Ketch Harbour (11 lakes & ponds) Lawrencetown Lake (62 lakes & ponds) Little Salmon River Moose Cove (6 lakes & ponds) Mushaboom (4 lakes) Musquodoboit Harbour (144 lakes & ponds) Newcombe Brook (19 lakes & ponds) Nine Mile River, HRM (32 lakes & ponds) Northeast River (23 lakes & ponds) Papermill Lake (22 lakes & Ponds) Pennant River (46 lakes & ponds) Petpeswick Inlet (24 lakes & ponds) Porters Lake (39 lakes & ponds) Powers Pond (17 lakes & ponds) Prospect River (11 lakes) Recreational- fishing Recreational- swimming Sackville River (17 lakes & ponds) Salmon River Lake (57 lakes & ponds) Sheet Harbour (7 lakes) Sheet Harbour- Northwest Arm (74 lakes & ponds) Ship Harbour River (67 lakes, ponds) Shubenacadie River (61 lakes & ponds) St. Margarets Miscellaneous (25 lakes & ponds) Sullivan's Pond (4 lakes & ponds) Terence Bay River (25 lakes & ponds) Western Region miscellaneous Williams Lake (2 lakes) Woodens River (16 lakes)

And God said, "Let the water teem with living creatures, and let birds fly above the earth across the expanse of the sky." .................. Genesis 1:20

Leading references in lake management and water quality A listing of select references!

Mackie, G.L. 2004. Applied Aquatic Ecosystem Concepts. Second Ed. Kendall/Hunt Publishing Company. 784 pp. ISBN 0-7575-0883-9.  <-- (excellent undergrad/grad reference in limnology; also includes reference tables for the more advanced professional) Wetzel, R.G. 2001. Limnology. Lake and River Ecosystems. Third Ed. Academic Press, San Diego. xvi, 1006 pp. ISBN 0-12-744760-1.  <-- (advanced reference) Wetzel, R.G., and Likens, G.E. 2000. Limnological Analyses. 3rd Ed. Springer, New York. xv, 429 pp. Smol, J.P. 2008. Pollution of Lakes and Rivers: A Paleoenvironmental Perspective. 2nd ed. Blackwell Publishing, Oxford. x,383 pp. ISBN-13: 978-1-4051-5913-5.  <-- (advanced reference) CCME-Canadian Environmental Quality Guidelines Summary Table (it also has links to introductory text, factsheet, and/or protocols for specific information and implementation guidance pertaining to each environmental quality guideline). Developing Biocriteria as a Water Quality Assessment Tool: Canadian Council of Ministers of the Environment   Management of Phosphorus: Canadian Council of Ministers of the Environment (CCME), and Environment Canada Holdren, C., Jones, W., and Taggart, J. 2001. Managing Lakes and Reservoirs. N. Am. Lake Manage. Soc. and Terrene Inst., in coop. with Off. Water Assess. Watershed Prot. Div. U.S. Environ. Prot. Agency, Madison, WI. xiv, 382 pp. Wedepohl, R.E., D.R. Knauer, G.B. Wolbert, H. Olem, P.J. Garrison, and K. Kepford. 1990. Monitoring Lake and Reservoir Restoration. EPA 440/4-90-007. Prep. by N. Am. Lake Manage. Soc. for U.S.E.P.A. 142 pp.

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