• 2010 Status of the Lake Ontario Lower Trophic Levels

      Holeck, Kristen T.; Hotaling, Christopher; Swan, Jonathan W.; Rudstam, Lars G.; McCullough, Russ; Lemmon, Dave; Pearsall, Web; Lantry, Jana R.; Connerton, Mike; LaPan, Steve; et al. (2010-01-01)
      This report presents data on the status of lower trophic level components of the Lake Ontario ecosystem (zooplankton, phytoplankton, nutrients) in 2010 and compares the 2010 data with available time series. Lower trophic levels are indicators of ecosystem health [as identified by the Lake Ontario Pelagic Community Health Indicator Committee (EPA 1993) and presented in the biennial State of the Lake Ecosystem Conference (SOLEC) reports] and determine the lake’s ability to support the prey fish upon which both wild and stocked salmonids depend. Understanding the production potential of lower trophic levels is also integral to ecosystem-based management. Continued evaluation of lower trophic levels is particularly important for fisheries management, as the observed declines in alewife and Chinook salmon in Lake Huron in 2003 may have been partly the result of changes in lower trophic levels (Barbiero et al. 2009).
    • Irondequoit Bay Nutrient Levels and Trophic State

      Sansone, Andrew (2019-03-01)
      Long term trends show lower levels of phosphorus in the epilimnion for the past nine years. Determining the amount of phosphorus is important as high levels can result in excessive algae growth known as eutrophication. The successful effort to reduce the amount of wastewater entering the bay resulted in large phosphorus reductions. Watershed contributions from stormwater runoff as well as the loading from internal processes still have the potential to fuel eutrophication. In recent years the bay has met the long term goals for phosphorus concentration and has not experienced large algal blooms.
    • Nutrient and sediment loss from a Niagara County watershed : the east branch of Twelvemile Creek, May 1998 to May 2000

      Makarewicz, Joseph C.; Lewis, Theodore W.; The College at Brockport (2000-07-01)
      Discharge and nutrient loss from a Niagara County tributary, Twelvemile Creek, was intensely monitored for two consecutive years by automated gauging and sampling techniques. This report focuses on the two annual cycles monitored (19 May 1998 to 18 May 1999 [Year 1] and 19 May 1999 to 17 May 2000 [Year 2]). The sampling regime allows an accurate measurement of discharge, nutrient and soil loss from a watershed during hydrometeorological events and nonevent conditions. Discharge and concentrations of nitrate, total phosphorus, sodium, total suspended solids, and total kjeldahl nitrogen were measured and converted into the amount of material lost from the watershed or loading to Lake Ontario.
    • Nutrients and Suspended Solid Losses from Oneida Lake Tributaries, 2002-2003: Butternut, Big Bay, Chittenango, Canaseraga, Cowaselon, Fish, Limestone, Oneida, Scriba and Wood Creeks

      Makarewicz, Joseph C.; Lewis, Theodore W.; The College at Brockport (2003-06-01)
      In summary, the goal of this report is to provide: ? An interpretive summary of chemistry trends for each subwatershed sampled in the Oneida Lake watershed; ? A prioritization of the tributaries, based on nutrient and soil loss; and ? A comparison between nutrient and soil loss from Oneida Lake subwatersheds to other central New York watersheds with different land use practices.
    • The Muckland Demonstration Project : Agricultural Non-point Source Pollution Control

      Makarewicz, Joseph C.; Lewis, Theodore W.; The College at Brockport (2000-02-01)
      The many muck fields in agriculture that exist in Oswego County offer an opportunity to demonstrate the feasibility of using artificially constructed wetlands to reduce nutrient levels in water draining from these highly fertilized, productive agricultural systems. An artificial wetland was constructed adjacent to a large muckland farm raising onions and sorghum. Water draining from the muck fields was pumped into the constructed wetland and allowed to flow naturally out of the wetland after a retention period determined by the flow regime. The question being asked was can nutrients and sediments be effectively removed from muckland drainage water by an artificial wetland?