Articles and Newsletters (Water Resources)

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Now showing 1 - 5 of 11
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    Agricultural BMPs in the Conesus Lake Watershed: Monitoring Impact
    (2006-01-01) Makarewicz, Joseph C.; The College at Brockport
    A goal of this project is to demonstrate the effectiveness of various agricultural management plans on steep-sloped highly erodable hydrologically sensitive farm lands to upstate farmers.
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    Water Quality of the Coastal Zone of Lake Ontario- LOCI revisited
    (2007-04-01) Makarewicz, Joseph C.; The College at Brockport
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    Economic Benefits of Restoring the Great Lakes
    (2009-08-25) Austin, John C.; Brookings Institute
    Conference presentation on Economic Benefits of Restoring the Great Lakes Coastal given at: Connections II, held at SUNY – Brockport on August 25, 2009 by John C. Austin, Non-Resident Senior Fellow, Brookings Institution Director, Great Lakes Economic Initiative.
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    Trophic Interactions: Changes in Phytoplankton Community Structure Coinciding with Alewife Introduction (Alosa pseudoharengus)
    (2000-12-01) Makarewicz, Joseph C.; The College at Brockport
    Conesus Lake is a eutrophic lake (MILLS 1975) and the most western of the Finger Lakes of New York State, USA. Abundance of a top level predator, the walleye (Stizostedion vitreum vitreum), decreased from a high of 12,000 individuals in 1966 to 9,614 individuals in 1975 to 1,850 individuals by 1985 in Conesus Lake (ABRAHAM 1989). Coincidental with the decline of the walleye in Conesus Lake was the proliferation of an obligate planktivore, Alosa pseudoharengus (ABRAHAM 1988). During the late 1970s (probably 1978 or 79), the alewife was accidentally introduced and became established in the lake. The pre-alewife zooplankton community was dominated by Daphnia pulex, Conochilus unicornis and Cyclops bicuspidatus. The overwhelming dominance of D. pulex in 1972 was impressive. It was the dominant cladoceran on each of the 50 sampling days throughout the year (CHAMBERLAIN 1975). Abundance reached as high as 36 individuals/L in the summer and 13 individuals/L in December. The pre-alewife phytoplankton community was dominated by larger (>70 ?m, greatest axial linear dimension) colonial, filamentous and unicelluar algae or net phytoplankton (MILLS 1975). With excellent historical phytoplankton and zooplankton data available, an opportunity existed to examine the impact of alewife introduction on plankton community structure in a large-lake ecosystem (13.7 km2) over a 16-year period.
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    The Occurrence of Cyanotoxins in the Nearshore and Coastal Embayments of Lake Ontario
    (2006-01-01) Makarewicz, Joseph C.; Boyer, Gregory L.; Guenther, William; Arnold, Mary; Lewis, Theodore W.; SUNY College of Environmental Science and Forestry; The College at Brockport
    Cyanotoxins are an emerging issue that Great Lakes’ scientists are conducting research on to determine occurrence, spatial and seasonal distribution, monitoring strategies and potential causes in Lake Ontario. Conditions necessary for blooms of Cyanobacteria exist along the shoreline of Lake Ontario. This is especially true in some embayments and rivers as levels of the nutrient phosphorus that stimulates the growth of Cyanobacteria is above New York State Department’s of Environmental Conservation guidelines. Monitoring in 2004 demonstrated that abundance of Cyanobacteria are indeed high in streams, embayments and the nearshore compared to offshore waters of southern Lake Ontario. Initial research suggests that microcystin production along the southern shoreline of Lake Ontario is minimal and well below WHO guidelines. However, production of the microcystin toxin often exceeds World Health Organization guidelines in inland lakes and may serve as a source to Lake Ontario. More information is required on the yearly variability of microcystin as wet and dry weather conditions appear to have affected the blooms of Cyanobacteria and the production of microcystin from year 2004 to year 2005 in both Lake Ontario and inland lakes. Vigilance by the general public utilizing the waters of Lake Ontario is still required. When visible blooms of algae are present at the surface, the general public and their animals should avoid contact with these waters.